LIST OF ELECTRICAL STANDARD SPECIFICATIONS by KQ1JZnU

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									                          LIST OF ELECTRICAL STANDARD SPECIFICATIONS


                        01    Codes for electrical equipment
                        02    Preparation of electrical documents
                        03    Incoming substations
                        04    Departmental substations
                        05    Medium voltage switchboards
                        06    Power transformers
                        07    Power control centres, motor control centres
                        08    Large motors
                        09    Small motors
                        10    Starters
                        11    Variable speed drives
                        12    Erection, cabling, earthing connections, lightning protection
                        13    Production and distribution of auxiliary voltages
                        14    Electrical cabinets and marshalling cabinets
                        15    Instrumentation
                        16    Process Control System : equipment and configuration
                        17    Process Control System: application software and integration
                        18    Lighting and power outlets
                        19    Electrical devices for mechanical equipment
                        20    Earthing grid
                        21    Process Control System : basic functional objects
                        22    Visible Cut-off Switches
                        23    Incoming transformers


Key codes: Low voltage, Power, Motor Control Centre, MCC, Cabinet

  F
  E
  D
  C
  B


  A    21/10/05      General revision                      I. MOCANU       M. MAHAUX
  0    07/10/02      Document edition                      I. MOCANU       M. MAHAUX
                                                                                              Approved
 Rev   Date          Scope of revision                        Issued        Approved CTI
                                                                                               CTEC
LAFARGE CENTRE TECHNIQUE INTER-UNITES                     LAFARGE CENTRE TECHNIQUE EUROPE CENTRALE
L’Isle d’Abeau – Parc de Chesnes – B.P. 70                Gumpendorfer Strasse 19-21,
F-38291 ST QUENTIN-FALLAVIER Cedex                        A-1060 WIEN, Postfach 264
Phone : + 33 474 82 16 16 / Fax + 33 474 94 30 07         Phone : + 43 1 811 42 0 / + 43 1 811 42 44 09
ASIA TECHNICAL CENTRE
Level 3,Wisma Lafarge N°2 Jalan Kilang
46050 PETALING JAYA – SELANGOR DARUL EHSAN
MY-MALAYSIA
Phone : + 603 77874800 / Fax : + 603 77874890

Reproduction & usage strictly forbidden without Lafarge                ELECTRICAL STANDARD
                                  th
explicite agreement (Law March 11 , 1957)                                 SPECIFICATION

                             POWER CONTROL CENTRES,                       Document         Page    Rev.
                             MOTOR CONTROL CENTRES                       STD002.U07        1/31     A
                                                                      CONTENT



1.      GENERAL REQUIREMENTS                                                                                                                            4
     1.1. APPLICABILITY                                                                                                                             4
     1.2. APPLICABLE STANDARDS                                                                                                                      4
     1.3. LOCAL CONDITIONS                                                                                                                          4
     1.4. GLOSSARY                                                                                                                                  4
     1.5. SIGNS USED                                                                                                                                4
     1.6. ENCLOSURE AND DEGREE OF PROTECTION                                                                                                        5
     1.7. RATED VOLTAGES                                                                                                                            5
       1.7.1. Main voltage......................................................................................................................... 5
       1.7.2. Auxiliary voltages ................................................................................................................. 5
     1.8.  RATED INSULATING VOLTAGE                                                                                                                 5
     1.9. RATED CURRENTS                                                                                                                            5
     1.10. SHORT CIRCUIT WITHSTAND STRENGTH                                                                                                         6
2.      SWITCHBOARD CONSTRUCTION                                                                                                                        6
     2.1.   COMMON REQUIREMENTS                                                                                                                          6
       2.1.1. General arrangement .......................................................................................................... 6
       2.1.2. Switchboard structure .......................................................................................................... 6
       2.1.3. Incoming circuit(s)................................................................................................................ 7
       2.1.4. Busbars ................................................................................................................................ 7
       2.1.5. Control and measuring circuits ............................................................................................ 7
       2.1.6. Remote Input/Output modules ............................................................................................ 8
       2.1.7. Wiring ................................................................................................................................... 8
       2.1.8. Labels................................................................................................................................... 9
     2.2.   DRAW-OUT / FIXED TYPES                                                                                                                       9
       2.2.1. Draw-out type ...................................................................................................................... 9
       2.2.2. Fixed type .......................................................................................................................... 10
3.      POWER SWITCHGEAR                                                                                                                              11
     3.1.     INCOMERS AND BUS-TIE BREAKERS                                                                                                           11
     3.2.     OUTGOING CIRCUITS                                                                                                                       11
4.      CONTROL SWITCHGEAR AND MEASURING DEVICES                                                                                                      12
     4.1.     CONTROL CIRCUITS                                                                                                                        12
     4.2.     PROTECTIONS                                                                                                                             13
     4.3.     MEASURING DEVICES                                                                                                                       14
5.      PCC/MCC SUPPLYING VSDS                                                                                                                        14

6.      POWER FACTOR CORRECTION UNITS                                                                                                                 15




                                      POWER CONTROL CENTRES,                                           Document                    Page           Rev.
                                      MOTOR CONTROL CENTRES                                           STD.002.U07                  2/31            A
7.     DOCUMENTS                                                             16
     7.1.   DOCUMENTS TO BE SUPPLIED BY THE OWNER                            16
     7.2.   DOCUMENTS TO BE PREPARED BY THE SUPPLIER                         16
     7.3.   DOCUMENTS TO BE SUBMITTED WITH THE OFFER                         17
8.     FACTORY TESTS                                                         17

9.     GUARANTEE                                                             18

10. DATA SHEETS                                                              18

11. SWITCHGEAR SELECTION TABLES                                              21
     11.1. SWITCHGEAR SELECTION FOR 400 V MOTORS USING LINE STARTERS         21
     11.2. SWITCHGEAR SELECTION FOR 500 V MOTORS USING LINE STARTERS         22
12. DIAGRAMS                                                                 23




                       POWER CONTROL CENTRES,           Document     Page   Rev.
                       MOTOR CONTROL CENTRES           STD.002.U07   3/31    A
    1. GENERAL REQUIREMENTS

    1.1. APPLICABILITY

    This specification is applicable to Power Control Centres (Low Voltage Distribution Boards) as
    well as to Motor Control Centres operating in 3-phase AC under a voltage not exceeding 1000 V.

    1.2. APPLICABLE STANDARDS

    The panels shall comply with the requirements of IEC and ISO standards. In particular, they shall
    be prefabricated, type-tested assemblies according to IEC 60439-1 standard.

    1.3. LOCAL CONDITIONS

    Local conditions are given in the Site Specification. Equipment subject to this specification will be
    installed in electrical rooms protected from the dust. The ambient air temperature will not exceed
    + 40°C nor be less than - 5°C and its average over a period of 24 h will not exceed + 35°C.

   If required by climatic conditions, anti-condensation heaters shall be installed.

    1.4. GLOSSARY

    ACC                        Auxiliary Control Centre

    MCB                        Miniature circuit breaker

    MCC                        Motor Control Centre

    PCC                        Power Control Centre

    PCS                        Process Control System

    UPS                        Uninterruptible Power Supply

    VCS                        Visible Cut-Off Switch

    VSD                        Variable Speed Drive

    1.5. SIGNS USED

    A  sign in the margin will mark up in the text of this specification each clause to be mandatorily
    specified by the Site Specification.




                          POWER CONTROL CENTRES,                       Document           Page     Rev.
                          MOTOR CONTROL CENTRES                       STD.002.U07         4/31      A
    1.6. ENCLOSURE AND DEGREE OF PROTECTION

    Switchboards enclosures shall ensure in normal service (doors closed) a protection degree IP31
    according to IEC 60529, IP20 with door open or drawer in test or drawn-out position.

    1.7. RATED VOLTAGES


    1.7.1. Main voltage
    This voltage is mentioned in the Site Specification, as well as the condition of the neutral point.
    The default value for a new plant with a frequency of 50 Hz is 400 V, three-phase.
    Unless otherwise mentioned, the neutral will be solidly earthed and not distributed.

    1.7.2. Auxiliary voltages
    These voltages are mentioned in the Site Specification. The default values for a new plant are :
       230 V AC Normal for contactor coils and anti-condensation heaters.
       230 V AC UPS for electronic modules and contactor coils when protection against feeder
        voltage dips is required.
       24 V DC for auxiliary relays and signalling lamps.

    All these auxiliary voltages will be supplied by the ACC (out of this supply), as developed in
    Specification STD.002.U13.

A   1.8. RATED INSULATING VOLTAGE

    The insulation voltage for the busbars and power switchgear as well as for any circuit of the
    switchboard shall not be less than:
       Busbars:                           1 000 V
       Power switchgear:                    690 V
       Power circuits:                       750V
       Control switchgear and circuits:     500 V

    1.9. RATED CURRENTS

       The rating of the incoming circuit(s) shall be in accordance with the feeding transformer,
        and at least equal to the total load of the users supplied, if the power of the feeding
        transformer is not known.
       The rating of the main busbar(s) shall not be less than this one of the incoming circuit(s).
        Same rating shall be considered for the full length of each main busbar (no reduced cross
        section at ends).




                          POWER CONTROL CENTRES,                     Document           Page     Rev.
                          MOTOR CONTROL CENTRES                     STD.002.U07         5/31      A
       Unless otherwise specified, every switchboard shall be designed for a continuous service.

    1.10. SHORT CIRCUIT WITHSTAND STRENGTH

       The rated short-time withstand current of the switchboard shall at least be equal to the short-
        circuit current mentioned in the particular specification and shall in no case be less than
        50 kA rms during 1 s.
       This shall also apply to the incoming circuit breaker, to bus-tie breakers and to outgoing
        circuit breakers (please refer to section 3).


    2. SWITCHBOARD CONSTRUCTION

    2.1. COMMON REQUIREMENTS


A   2.1.1. General arrangement

       The switchboard shall be defined with access to switchgear and to cables from the front
        only. The switchboard shall be designed so that its sections (columns) can be installed either
        in one line or back to back (busbars shall be independent and segregated).
       The main busbar shall be positioned on top or on the back of the switchboard and cables
        shall enter from the bottom. If an incoming bus duct is used, this could enter from the top.
       The switchboard shall be designed to be installed directly above the cable channel or on
        technical floor without the addition of any part not supplied by the Supplier.
       The switchboard shall be designed for easy extension at least at one end.
       All the switchboard components: busbars, outgoing feeders and its dimensions shall be
        standardized as much as possible.
       A minimum of 10% empty spare space shall be provided.

    2.1.2. Switchboard structure

       The switchboard shall be of modular and prefabricated type, assembled and equipped in
        the factory. No section shall be higher than 2200 mm and access to each piece of equipment
        and device shall be easy, especially for resetting thermal overload protection relays or for
        manoeuvring MCBs protecting auxiliary circuits.




                         POWER CONTROL CENTRES,                      Document           Page     Rev.
                         MOTOR CONTROL CENTRES                      STD.002.U07         6/31      A
       Anticorrosion protection of the metal structure (internal and external sides) shall be
        ensured as follows:
           Continuous hot dip galvanised sheet metal shall be used for non visible internal metal
            parts.
           Visible metal parts shall be prepared by phosphatisation-cleaning treatment and painted
            with either epoxy-polyester powder (minimum thickness 50 m) or acrylo-urethane
            lacquer (minimum thickness 20 m). The finish shall be semi-gloss; the colour will be the
            Manufacturer’s standard shade unless otherwise specified.
       Ample passage shall be designed for the cables arriving from below, and supporting clamps
        shall be available for fixing power and control cables. Cable channel width shall not be less
        than 300 mm.
        Dust ingress and fire transmission will be stopped by closing these cable passages, after
        cables installation, with fire resisting materials (operation performed by the cabling
        contractor).
       Each switchboard section shall be equipped with a vertical copper earth collector connected
A       to an horizontal copper earth collecting bar. This shall terminate to an earthing tail,
        accessible when the board is alive and suitable for connecting a copper earthing cable. The
        cross section of this earth collector shall be such that it will withstand the switchboard’s short-
        circuit current during 1 s, with a minimum cross section of 200 mm².
       Switchboards shall be form 2 with doors open. At the minimum, Plexiglass (perspex)
A       screens will be provided in order to avoid contacts with live conductors (busbars and power
        connections).
       Each access door shall be locked by a single handle without key nor need of using any tool
        as these switchboards will be installed in locked electrical rooms.

    2.1.3. Incoming circuit(s)

   The incoming section(s) shall be designed for connection to incoming feeder(s) either by
    busbar provided with flexible connection or by cables.

A   2.1.4. Busbars

       Main busbars (horizontal) and vertical busbars shall be of electrolytic copper type Cu ETP
        according to ISO 1337 standard.
       Busbars which do not require maintenance shall be provided.
       Metal sheets near high current busbars (1 600 A or more) shall be of aluminium or of other
        non magnetic material.
       All bolted connections shall be checked by using a torque wrench.

    2.1.5. Control and measuring circuits
    Every control equipment shall be accessible from the front of the switchboard. Every signalling
    switchgear and every indicator shall be visible from the front of the switchboard.




                         POWER CONTROL CENTRES,                         Document           Page      Rev.
                         MOTOR CONTROL CENTRES                         STD.002.U07         7/31       A
    2.1.6. Remote Input/Output modules

       Unless otherwise mentioned in the Site Specification, digital remote Input/Output modules
        and their associated communication modules shall be installed by the Supplier on top of
        each switchboard section, in a compartment separate by a metal sheet from the portion
        devoted to switchgear’s installation. Unless otherwise provided in the Site Specification,
        these I/O modules are not a part of this supply.
       Every device of these modules shall be accessible directly from the front of the switchboard,
        without having to remove any part.
       Indication LEDs of I/O modules and of communication modules shall be perfectly visible to
        a person standing in front of the switchboard, with its doors closed.

    2.1.7. Wiring

       The switchboard wiring shall be performed in accordance with the Lafarge standard
        schematic diagrams included in section 12 of this document.
A      Terminal strips shall allow easy maintenance access to each wire terminal. They shall be
        segregated between:
           Power circuits
           AC control circuits
           DC control circuits.
       Terminals:
           Power terminals : screw type up to 16 mm² core section, with a cable lug for larger
            cables ;
           Control terminals : shall be of insulation displacement type (needing no special tool for
            completing the connection) or of spring type.
           Connectors with plug and sockets (several stages if necessary) shall be provided for
            control terminals of plug-in modules.
       Auxiliary voltages distribution to the different circuits will preferably be by adequate
        prefabricated busbars. These busbars shall be adequately insulated to prevent any
        accidental contact.
       Control wires shall be flexible, 500 V PVC insulated with a minimum core section of 1 mm².
A       Each wire shall be labelled or marked up at each end with the number of the terminal it is
        connected to, according to manufacturer’s standard procedures. Wires shall be installed in
        trunkings of adequate sections.




                         POWER CONTROL CENTRES,                     Document          Page     Rev.
                         MOTOR CONTROL CENTRES                     STD.002.U07        8/31      A
    2.1.8. Labels

       Following labels shall be provided and installed :
           Switchboard main label installed at the upper left front part of the switchboard and
            indicating the tag (Lafarge code) and the description of the switchboard.
           Switchboard indicating plate installed just under the main label and indicating :
            manufacturer, year, rated voltage, rated insulating voltage, incoming and main bus bar
            rated currents, short circuit withstand current.
           Section (column) number label installed on the upper middle front part of each section or
            of its door.
           Module (plug-in type) or drawer (draw-out type) tag label to be secured to the fixed part
            facing to corresponding module or drawer, indicating the tag (Lafarge code) and the
            description of the circuit.
       Labels shall be engraved in black - cored white dilophane and fixed by screws or rivets (glue
        not accepted). Letters’ height shall be at least :
           15 mm for the switchboard main label
           6 mm for the incoming, bus-tie and outgoing circuits labels
           4 mm for the auxiliary circuits.

    2.2. DRAW-OUT / FIXED TYPES

   The Owner will specify whether the switchboard shall be of draw-out or plug-in type.

    2.2.1. Draw-out type

       The switchboard shall be form 3b (at least).
       Each outgoing circuit shall be at least Service Index 333:
A
           Operation: control circuits can be tested with the power circuit off
           Maintenance: after switching it off, any outgoing circuit module can be removed and
            inserted without switching off the switchboard
           Evolution: new outgoing circuits can be installed without switching off the switchboard.
       Each drawer shall have 4 positions:
           Connected (power and control on)
           Test (power of, control on)
           Disconnected (power and control off)
           Removed.
       It shall be possible to lock out each drawer in « disconnected » position by up to 3 padlocks.




                         POWER CONTROL CENTRES,                       Document          Page     Rev.
                         MOTOR CONTROL CENTRES                       STD.002.U07        9/31      A
       Power circuits shall be automatically disconnected in « disconnected » positions, as well on
        upstream side than on downstream side.
       Control circuits shall be disconnected in « removed » position either automatically or
        manually by disconnecting a plug where pass all the control circuits through. Such
        disconnection/reconnection operation shall not need the use of any tool.
       A contact from the drawer shall inform the PCS (and the operator) that this circuit is
        unavailable when the drawer is in “disconnected” or “removed” position.
       A defeater (mechanical interlocking system) shall be installed on each fixed part and on
        each drawer to prevent from introducing a drawer of an inappropriate type or rating.
       Signalling lamps and instruments (current and active power indicators) shall be installed in
        front of drawers.

    2.2.2. Fixed type

       The switchboard shall be of modular type form 2b (at least), except sections housing
        incomers and bus-tie breakers which shall be form 3b.
       Each outgoing circuit shall be mounted and wired on an individual metal sheet plate, also
        modular and standardized. It shall be possible to install or remove such modules fully
A
        equipped without dismantling the adjacent modules or other cubicle parts or accessories.
       Each outgoing circuit shall be at least Service Index IS 322, which means :
           Operation : control circuits can be tested with the power circuit switched off.
           Maintenance : after switching it off any outgoing circuit module can be removed without
            switching off the switchboard.
           Evolution : new outgoing circuits can be installed, if spare spaces exist, without switching
            off the switchboard.
       This plate shall support power connectors to be plugged in the busbar. It shall also support a
        connector for connecting all the control circuits of the module. No connection with another
        outgoing circuit or with switchboard common circuits shall be performed without passing
        through these plugs and connectors.
       Each modular plate shall also support signalling lamps and instruments (current and
        active power indicators). Alternatively, these items can be installed and wired to the front
        door. If signalling lamps and instruments are mounted on the plates, each switchboard
        section supporting outgoing circuits shall be equipped with a safety glass door with a rubber
        seal.




                         POWER CONTROL CENTRES,                       Document           Page     Rev.
                         MOTOR CONTROL CENTRES                       STD.002.U07         10/31     A
    3. POWER SWITCHGEAR

    3.1. INCOMERS AND BUS-TIE BREAKERS

       The incomers and bus-tie breakers shall have their protection devices co-ordinated with
        the outgoing circuit breakers to guarantee a good selectivity. On feeders already protected
        on upstream side (for instance by a circuit breaker connected to the secondary winding of the
        feeding transformer) power switches (or circuit breakers without protection relays) shall be
        installed to avoid unnecessary selectivity steps.
       Each circuit breaker or power switch shall be of draw-out type. It shall be equipped with a
        system for locking out with 3 padlocks.
       Each circuit breaker or power switch shall also have a closing auxiliary contact (normally
        open) for initiating an alarm when in open position.

      Emergency busbar (when applicable) shall be supplied in normal condition from the main
        busbar; in case of power failure from the emergency generator. Changeover shall be by
A       2 circuit breakers or contactors mechanically interlocked to avoid paralleling these 2 sources.
       If neutral is isolated, an insulation check meter shall be installed on incoming circuit, with
        an alarm contact open on low insulation resistance.
       An emergency shut-down push button (red mushroom to be turned for unlatching) shall be
        installed on the incoming section (column) of the switchboard and wired to switchboard’s
        terminals.

    3.2. OUTGOING CIRCUITS

       Each outgoing circuit shall be protected by a circuit breaker from short circuits and
        instantaneous overcurrents; fuses are not accepted. This circuit breaker shall be capable to
        withstand the full short circuit current. Its protection system shall be co-ordinated with cables
        core section and cables length according to IEC rules (short-circuit condition, overload
        condition, voltage drop, installation conditions, protections against indirect contacts, ...).
       Its handle shall provide for locking it out with up to 3 padlocks.
       Each outgoing circuit to a motor shall be protected by a thermal overload protection. Such
        protection can be provided by a separate overload relay tripping the contactor coil. It can also
        be integrated in the above mentioned circuit breaker. If separate from the circuit breaker, it
        shall also be co-ordinated according to IEC rules (overload condition).
       For protecting motors driving large inertia equipment with long start-up time such as fans with
        a power of 11 kW or more, heavy duty starters or electronic soft starters shall be used.
       Each motor shall be operated by a contactor (or two contactors for two directions motors
        and two speeds motors).




                         POWER CONTROL CENTRES,                       Document           Page      Rev.
                         MOTOR CONTROL CENTRES                       STD.002.U07         11/31      A
        Each contactor shall be dimensioned for an AC-3 service according to IEC 60947-4 with
        following derating: the contactor rated current shall be at least equal to :
           150% of user’s rated current for motors up to 55 kW
           130% of user’s rated current for larger motors.
       Switchgear items of each outgoing circuit shall have a type 2 co-ordination according to
        IEC standard, resulting in the absence of contacts’ welding and of damage on protection
        system after any electrical failure.
       The Supplier shall also check the compliance of equipment supplied with starting conditions
        (magnetisation current, long starting time, …)
       Outgoing circuits shall be standardised in order to reduce quantities of spare parts to be
        kept in the warehouse.
       Protection functions (magnetic and thermal overload) and operating function can be grouped
        in a combined equipment provided that the operated motor power does not exceed 22 kW.

      Considering all the switchboards included in the Supply, following spare outgoing circuits
        shall be supplied (fully equipped) :
           2 units for each rating of 1 direction motor feeder up to 15 kW
           1 unit for each rating of:
            - 1 direction motor feeder above 15 kW ;
            - 2 directions motor feeder ;
            - circuit breaker outgoing feeder.
        The approval of the Owner shall be required on the choice of the switchboards where these
        spare circuits will be installed.


    4. CONTROL SWITCHGEAR AND MEASURING DEVICES

    4.1. CONTROL CIRCUITS

       On each incoming, bus-tie or outgoing circuit shall be installed two Miniature Circuit
        Breakers :
           1 MCB for protecting AC control circuits ;
           1 MCB for protecting DC control circuits.
       In case of a double busbar with a bus-tie, the three incoming/bus-tie circuit breakers/switches
        shall have their trip coils interlocked to prevent any paralleling of sources.

A      The KA relay that controls the contactor kW shall be of safety relay type (IEC).




                         POWER CONTROL CENTRES,                      Document              Page    Rev.
                         MOTOR CONTROL CENTRES                      STD.002.U07            12/31    A
       A no-volt relay shall be installed in the incomer compartment; this relay equipped with a timer
A       (0 to 1 sec) shall cut off the contactor’s auxiliary voltage 230 VAC (recommended setting 0.5
        sec). The contact of this relay shall be connected in the series with the emergency shut-down
        contacts.
       In case of an emergency busbar an automatic switchover system shall be supplied to
        change the sources in case of power failure and when the power is back. Auxiliary contacts
        of the switchboard system shall be wired to switchboard’s terminals in order to inform the
        PCS.
A      Each outgoing circuit shall be equipped with signalling lamps indicating :
           Green:
            - running direction 1 / speed 1
            - running direction 2 / speed 2 (if applicable)
           Yellow: Circuit available (drawer in operation position, power switch and/or circuit
            breaker closed, thermal overload protection in normal position, auxiliary voltages MCBs
            closed)
           Red: Trip (circuit breaker and thermal relay).
        These lamps shall use Light Emitting Diodes (bulbs with a filament are not accepted). Lamp
        colours are shown on Lafarge standard schematic diagrams (please refer to section 12).


      Unless otherwise mentioned in the Site Specification, each control circuit (and each alarm
        circuit) shall be connected to Remote Digital Input/Output modules to be installed on top of
        each switchboard section (column) in a closed compartment isolated by a metal sheet from
        the rest of the section. These modules will communicate with the PCS. Unless otherwise
        mentioned, the supply of these RI/O modules and their associated devices (power supply,
        connectors, ...) is not included in this scope of work. This in order to minimise site cabling
        and be able to perform a maximum of tests at the workshop.
        Alternatively, for incoming circuits, the metering units mentioned in section 4.2 can be used
        for the transmission of their control signals to the plant control system.
    
       When required by the Site Specification, the switchboard shall be intelligent. Each incoming
        and each outgoing circuit shall be controlled by a fieldbus connected to the PCS. It shall be
        possible to modify the parameters of these circuits through this fieldbus.
       Each outgoing circuit shall be wired up in accordance with the Lafarge standard schematic
        diagrams under section 12. Inter allia, terminals shall be supplied for connecting local START
        and STOP commands from the VCS supplied by others.

    4.2. PROTECTIONS

    Following alarms shall be made available to the PCS :
       Incoming/bus-tie breaker is in off position (please refer to section 3.1);
       MCB protecting AC control circuits is in off position (please refer to section 4.1);




                         POWER CONTROL CENTRES,                        Document            Page    Rev.
                         MOTOR CONTROL CENTRES                        STD.002.U07          13/31    A
       MCB protecting DC control circuits is in off position (please refer to section 4.1);
       Insulation resistance too low if an insulation checkmeter is installed at the incoming feeder
        (please refer to section 3.1).

    The emergency shut-down push-button installed on incoming section (please refer to section 3.1)
    will trip the MV circuit breaker feeding the transformer supplying this switchboard (cabling to be
    performed by the cabling contractor).

    4.3. MEASURING DEVICES

       Every current transformer shall have a secondary winding rated for 1 A, and shall withstand
        the maximum possible short circuit current.
       An electrical parameters’ metering unit shall be installed on each incoming circuit. This
        shall measure at least following parameters : 3U, 3V, 3I, P, Q, S, f and PF and display these
        parameters (according to operator selection).
        This unit shall also meter active and reactive energies and provide a pulse output for active
        energy.
        This metering unit shall also monitor the presence of the three phases and send an alarm
        through the fieldbus (see below) in the absence of one or several phases, or in case of
        failure of this device.
        It shall include communication with the PCS by a fieldbus PROFIBUS DP. On this fieldbus
        shall be made available all above measurements and alarms.
       Every outgoing circuit supplying a motor with a power of 30 kW or more or a material
        handling equipment (screw conveyor, bucket elevator, chain conveyor, belt conveyor, …) of
        any power shall be equipped with a current transducer converting the full motor current
        range in a 4-20 mA DC signal connected to the plant control system through outgoing
        terminals and to a current indicator installed on the drawer front/plate or adjacent to it.
       The current transducer and the current indicator shall be replaced by an active power
A       transducer and an active power indicator for bucket elevators and for cooler drag chains.


    5. PCC/MCC SUPPLYING VSDS
       These LV boards shall be provided with two motorised incoming circuit breakers supplying
        two separate 3-phase busbars (please refer to the diagram indicated in section 12). Their
        simultaneously switching-on and switching-off shall be ensured by a dedicated control circuit.
       Each 3-phase incoming feeder shall be provided with following protections :
           A surge protection on each phase
           An insulation check meter
       The outgoing circuits supplying VSDs shall be equipped with fast fuses.
       The loads of each bus bar shall be balanced as far as possible. A single line diagram of the
        switchboard shall be submitted to the Owner’s approval.




                         POWER CONTROL CENTRES,                        Document            Page    Rev.
                         MOTOR CONTROL CENTRES                        STD.002.U07          14/31    A
    6. POWER FACTOR CORRECTION UNITS
       Unless otherwise specified, a power factor correction unit shall be supplied with each set of
        PCC/MCC. The reactive power of this unit shall be calculated so to increase the power factor
        of the switchboard from natural value (typically 0.7) up to 0.92 unless more stringent
A
        requirements from the Site Specification.
       Following table indicates the minimum rated power required for power factor correction units
        according to the transformer rated power supplying this set of PCC / MCC:

                  Feeding transformer rated                 Power factor correction
                            power                          unit rated power required
                            (kVA)                                    (kVAR)
                              630                                         275
                             1000                                         425
                             1250                                         520
                             1600                                         675
                             2000                                         850
                             2500                                         1050


       This power factor correction unit shall be of automatic type, connecting or disconnecting the
        capacitor banks by steps according to power factor fluctuations. Steps shall not exceed
        50 kVAR each. All the capacitor banks shall be identical.
       It shall be housed in a separate cabinet to be installed either at the end of the PCC or MCC
        or behind their incoming section. This cabinet’s look shall match as much as possible with
A
        the PCC or MCC.
       It shall be connected to corresponding PCC or MCC by an outgoing circuit breaker of
        appropriate rating.
       It shall be designed in order to be remotely turned on and off.
       The protection against harmonic currents will be considered taking into account the ratio k
        between the power of harmonics generated and the power of the transformer feeding the
        PCC/MCC :
           k < = 15% : no harmonic protection required
           k > 15% and < = 25% : reinforced type is required
           k > 25% and < = 50% : anti-harmonic inductances are required
           k > 50% : anti-harmonic filters are required
        The type of protection against harmonic currents shall be submitted to the Owner’s approval.




                         POWER CONTROL CENTRES,                      Document          Page    Rev.
                         MOTOR CONTROL CENTRES                      STD.002.U07        15/31    A
       The protection fuses shall be provided with a trigger , with trip local signalisation and one
A       NC contact for remote alarm.
       Each unit shall be equipped with discharge resistors for operator’s safety.
    Note:   For new department electrical distribution, at least, reinforced type is required.


    7. DOCUMENTS

    7.1. DOCUMENTS TO BE SUPPLIED BY THE OWNER

       Site Specification which details site conditions, voltages, …
       Particular Specification : this document, complemented with a single line diagram if
        required, shall specify, when not mentioned in the Site Specification :
           draw-out or plug-in type
           sections arrangement back-to-back or in one row
           incoming (stand-by) rated currents
           short circuit current to be considered for each board
           emergency busbar rated current (if applicable)
           power factor correction unit rated power required or power factor to be achieved with all
            the users in operation.
       Consumers’ List specifying for each user :
           rated power
           rated current
           rated voltage
           type of circuit (with/without contactor, one way/two ways, normal/heavy start)
           accessories (current/active power transducer and indicator)
           power cable core section (the Supplier to mention when it needs this document).

    7.2. DOCUMENTS TO BE PREPARED BY THE SUPPLIER

    Following documents shall be prepared in English (unless otherwise stated in the Site
    Specification) in accordance with the requirements of specification STD.002.U02.
       Single Line Diagram giving references of upstream equipment : feeders’ tag numbers,
        upstream single line diagrams, ...
       Selectivity Study demonstrating that protections are effective and co-ordinated.
       Lay-Out of each switchboard with dimensions and position of each circuit.




                          POWER CONTROL CENTRES,                      Document            Page    Rev.
                          MOTOR CONTROL CENTRES                      STD.002.U07          16/31    A
       Lay-Out of each module (Typical)
       Civil Works Guide Drawing for each switchboard.
       Typical Detailed Schematic Diagrams for each circuit type (including auxiliary circuits).
        These diagrams shall also mention the number of every terminal.
       Interlocking Diagrams if applicable.
       Equipment list of Switchgear installed with technical details.
       Application software of each programmable equipment.
       Interface tables of exchange (addresses clearly indicated) of each programmable
        equipment.
       Manufacturing Time Schedule.
       Installation and Maintenance leaflets.
       Recommended Spare Parts Lists :
           for commissioning
           for 2 years operation.

    7.3. DOCUMENTS TO BE SUBMITTED WITH THE OFFER
A
    Following documents shall be submitted in English with bid:
       Detailed specification of the proposed equipment
       Technical characteristics of each switchboard
       Front face and dimensions of each switchboard
       Type tests certificates according IEC 60439-1 for:
           Icc – 50 kA 1s
           Ingress protection certificate.


    8. FACTORY TESTS

    The Supplier shall notify the Owner not less than 14 days prior to the testing period, in order that
    the Owner may, should he think it necessary, delegate a representative to witness these tests.

    Following tests shall be performed on each switchboard, according to IEC 60439-1 standard,
A   completely assembled except main busbars’ connections between sections which are to be
    separately packed for despatch and a detailed test procedure be submitted to the Owner prior
    starting the tests.
       Measuring insulation resistances (power and control circuits)
       Dielectric tests (power and control circuits)




                         POWER CONTROL CENTRES,                       Document           Page     Rev.
                         MOTOR CONTROL CENTRES                       STD.002.U07         17/31     A
   Operation tests
   Check of interlockings and safety devices
   Check of drawers interchangeability (if applicable)
   Check of dimensions and accessories.
The Supplier shall also supply copies of type test reports proving the short circuit withstand of the
switchboard.
All these factory tests/type tests will be performed at the Supplier's expenses.
A detailed test report shall be prepared by the Supplier and handed over to the Owner’s
representative or mailed to the Owner if it has not witnessed the tests.


9. GUARANTEE

Minimum required guarantee is 24 months after commissioning, with a maximum of 30 months
after the switchboards are ready for factory tests.


10. DATA SHEETS




                      POWER CONTROL CENTRES,                       Document          Page      Rev.
                      MOTOR CONTROL CENTRES                       STD.002.U07        18/31      A
    CUSTOMER:                                                   SUPPLIER :
    PROJECT:
    DATA SHEET                                                  PROJECT No:
    POWER CONTROL CENTRE, MOTOR                                 OFFER:
    CONTROL CENTRE
    EQUIPMENT:                                                  DATE :
       Type
   1  Draw-out/Plug-in
    2  Protection degree                                IP
    3  Segregation                                     Form
    4  Service index                                    IS
       Manufacturer
    5  Cabinets
    6  Switchgear
       Service conditions
   7  Rated voltage                                    V
   8  Insulation voltage                               V
   9  Short-time withstand current                     kA
       Incoming circuit
    10 Rated current of main circuit breaker            A
    11 Short circuit current of main circuit breaker    kA
   12 Feeder by busbar/cables
    13 Measurement device
    14 Insulation checkmeter (if applicable)
       Busbars
    15 Main busbars (horizontal) rated current           A
    16 Material / cross section
    17 Secondary busbars (vertical) rated current        A
    18 Material / cross section
    19 Maintenance required
       Control
   20 Remote I/O modules / intelligent switchboard
       Accessories
   21 Anti-condensation heaters required              Yes/No
    22 Others                                          Yes/No
       Dimensions
    23 Switchboard height                               mm
    24 Switchboard depth                                mm
    25 Switchboard length                               mm
    26 Cable channel width                              mm
       Painting
    27 Preparation
    28 Finish
    29 Deviations from this specification




                         POWER CONTROL CENTRES,                  Document     Page    Rev.
                         MOTOR CONTROL CENTRES                  STD.002.U07   19/31    A
    CUSTOMER:                                                      SUPPLIER :
    PROJECT:
    DATA SHEET                                                     PROJECT No:
    LV POWER FACTOR CORRECTION UNIT                                OFFER:
    EQUIPMENT:                                                     DATE :
    1   Type
    2   Manufacturer
   3   Rated voltage                                     V
   4
    5
        Insulation voltage
        Total capacity
                                                          V
                                                         kVAr
    6   Capacity of each step                            kVAr
        Power factor regulation                           V
    7   Regulation load relays in each unit             Yes/No
    8   Remote turn on and off                          Yes/No
        Protection against harmonic currents
    9   Reinforced protection                           Yes/No
    10 Anti-harmonic inductance                         Yes/No
    11 Anti-harmonic filters                            Yes/No
        Dimensions
    12 Cabinet height                                     mm
    13 Cabinet depth                                      mm
    14 Cabinet length                                     mm
        Painting
    15 Preparation
    16 Finish
    17 Deviations from this specification




      Notes:
      1. Values to be mentioned in boxes marked with  sign are to be given by the Owner or by the
                                                                                                        Formatted: Indent: Left: 0.3", Hanging:
                                                                                                        0.2", Numbered + Level: 1 + Numbering Style:
         main Contractor.                                                                               1, 2, 3, … + Start at: 1 + Alignment: Left +
      2. The Supplier is requested to fill in a data sheet for each type of equipment proposed and to   Aligned at: 0.54" + Tab after: 0.79" + Indent
                                                                                                        at: 0.79", Tab stops: Not at 0.79"
         return it with its proposal.




                         POWER CONTROL CENTRES,                     Document          Page      Rev.
                         MOTOR CONTROL CENTRES                     STD.002.U07        20/31      A
11. SWITCHGEAR SELECTION TABLES

11.1. SWITCHGEAR SELECTION FOR 400 V MOTORS USING LINE STARTERS


             Current
    P (kW)
               (A)
                        Contactor           Thermal           C-breaker *        CT Ratio
     0.25      0.8           25         0.63     to    1
     0.37      1.1           25        1.00    to     1.6
     0.55      1.6           25        1.00    to     1.6
     0.75       2            25        1.60    to     2.5
     1.1       2.5           25        1.60    to     2.5
     1.5       3.3           25        2.50    to     4.0
     2.2       4.6           25        4.00    to     6.0
      3        6.0           25        4.00    to     6.0
      4        8.4           25        7.00     to    10
     5.5       11            25        10.0     to    13
     7.5       15            25        13.0     to    18
      11       20            40        18.0     to    25
      15       28            40        23.0     to    32
     18.5      34            63        30.0     to    40
      22       40            63        38.0     to    50
      25       47            80         0.63     to    1                            50/1
      30       55            80                  "                                  60/1
      37       66           115                  "                                 100/1
      55      100           185                  "                                 125/1
      75      128           185                  "                                 150/1
      90      156           265                  "                                 200/1
     110      205           265                  "                                 250/1
     132      224           400                  "                                 250/1
     160      280           400                  "                                 300/1
     200      349           400                  “                                 400/1
     250      434           630                  “                                 630/1

Up to 63 A, circuit breakers are equipped with thermal overload and magnetic protection circuits
rated for standard motors.

*    to be filled by MCC Supplier for type 2 co-ordination (please refer to section 7.2). The
     number of circuit breaker sizes will be limited to reduce spare part stock.




                    POWER CONTROL CENTRES,                     Document          Page       Rev.
                    MOTOR CONTROL CENTRES                     STD.002.U07        21/31       A
11.2. SWITCHGEAR SELECTION FOR 500 V MOTORS USING LINE STARTERS


                   Current
       P (kW)
                     (A)
                               contactor        Thermal        C-breaker *     CT ratio
        0,25         0,8           25          0,63 to 1
        0,37         1,1           25         1,00 to 1,6
        0,55         1,6           25         1,00 to 1,6
        0,75          2            25         1,60 to 2,5
         1,1         2,5           25         1,60 to 2,5
         1,5         3,3           25          2,50 to 4
         2,2         4,6           25          4,00 to 6
          3           6            25          4,00 to 6
          4          8,4           25          7,00 to 10
         5,5         11            25         10,00 to 13
         7,5         15            25         13,00 to 18
         11          20            40         18,00 to 25
         15          28            40         23,00 to 32
        18,5         34            63         30,00 to 40
         22          40            63         38,00 to 50
         25          47            80          0,63 to 1                         50/1
         30          55            80               "                            60/1
         37          66           115               "                            80/1
         45          80           185               "                           100/1
         55         100           185               "                           125/1
         75         128           185               "                           150/1
         90         156           265               "                           200/1
        132         224           400               "                           250/1
        160         280           400               "                           300/1

Up to 63 A, circuit breakers are equipped with thermal overload and magnetic protection circuits
rated for standard motors.
*   to be filled by MCC Supplier for type 2 co-ordination (please refer to section 7.2). The
    number of circuit breaker sizes will be limited to reduce spare part stock.




                    POWER CONTROL CENTRES,                     Document          Page      Rev.
                    MOTOR CONTROL CENTRES                     STD.002.U07        22/31      A
12. DIAGRAMS
   MCC single line diagrams in 2 versions :
       Either the emergency generator feeds the essential users through the normal busbar of
        the MCC and the load shedding of the other users is controlled by the PCS.
       Or the MCC is equipped with an emergency busbar for feeding the essential users from
        the emergency generator, the other users being connected to the normal busbar not fed
        from the emergency generator.
   Lafarge standard schematic diagrams of 5 types :
       K1 : motor one direction
       K2 : motor two directions
       KM : actuator 2 positions
       VS : variable speed drive (VSD installed inside the MCC)
       Q : circuit breaker supplying a package such as a crane panel, …

    For each schematic diagram following facilities shall be specified by following suffixes:
       E : emergency shut-down (pull-rope, push-button)
       I : current measurement
       J : power measurement
       S : speed monitor
       H : heavy start.

    Examples :
       Belt conveyor : K1 EIS
       Fan, Pmot > 30 kW, direct start : K1 IH
       Kiln motor : VS I




                     POWER CONTROL CENTRES,                       Document           Page       Rev.
                     MOTOR CONTROL CENTRES                       STD.002.U07         23/31       A
                                                                                                                                       MOTOR CONTROL CENTRE
                                                                                                                               Typical single line diagram without LV emergency supply


                                                                                                                                        Main Horizontal Busbars
                                                                     MEASURING

                                                                     MODULE (KY)




                                                             I                       I                   I                 I                        I                                    I                      I        I              I




                                                                      PE




                                                                                                        MOTOR STARTER MODULES                   PACKAGE                       FEEDING ESSENTIAL




MOTOR CONTROL CENTRES
POWER CONTROL CENTRES,
                                                                                                                                                                                 CONSUMERS                                   By- Pass

                                                                                                                                                                                                                      400V

                                                                 3

                                                                                                     CAPACITOR BANK                                                                          Auxiliary




                                           INCOMING FEEDER
                                                                                                     STEP REGULATION ACCORDING TO PF & LOAD                                                  Transformer
                                                                                                                                                                                             (TF)
                         TN-S NETWORK
                                                                                                                                                                                                                    230Vac
                         NEUTRAL CONDUCTOR                                                                                                                                                             230Vac
                                                                                                                                                                                                                             UPS (UP)
                         NOT DISTRIBUTED




 Document
STD.002.U07
                                                                                   DISTRIBUTION TRANSFORMER (TF)
                                                                                   MEDIUM/LOW VOLTAGE




Page
24/31
 A
Rev.
                                                                                                                                       MOTOR CONTROL CENTRE
                                                                                                                              Typical single line diagram with LV emergency supply

                                                                                              Main Horizontal Busbars                                                                      Emergency Horizontal Busbars
                                                                     MEASURING
                                                                     MODULE (KY)




                                                             I                       I              I               I              I                                                          I                 I        I              I




                                                                      PE                                                                                             PE                V




                                                                                                     MOTOR STARTER MODULES              PACKAGE                                    FEEDING ESSENTIAL




MOTOR CONTROL CENTRES
POWER CONTROL CENTRES,
                                                                                                                                                                                      CONSUMERS                              By- Pass

                                                                                                                                                                                                                      400V

                                                                 3                                                                                                                 3

                                                                                                        CAPACITOR BANK                                                                      Auxiliary




                                           INCOMING FEEDER
                                                                                                        STEP REGULATION ACCORDING TO PF & LOAD
                                                                                                                                                                                            Transformer
                         TN-S NETWORK
                                                                                                                                                                                            (TF)
                                                                                                                                                                                                       230Vac       230Vac
                         NEUTRAL CONDUCTOR                                                                                                                                                                                   UPS (UP)
                         NOT DISTRIBUTED




 Document
STD.002.U07
                                                                                   DISTRIBUTION TRANSFORMER (TF)
                                                                                   MEDIUM/LOW VOLTAGE                                                                          G            EMERGENCY GENERATOR




Page
25/31
                                                                                                                                                                           3




 A
Rev.
                                                                                                     MOTOR CONTROL CENTRE
                                                                                              MCC 316MC13-VSD Kiln Downstream (example)
                                                                                                                                                                  Note: fast fuses for VSD protection

                                                                                   Busbar 1                                                            400V

                                                                                                    Busbar 2

                         IM-Insulation Monitoring


                             3      3
                           IM     IM
                                                                                Fast fuses




                                             3   3
                            Surge arrester




MOTOR CONTROL CENTRES
POWER CONTROL CENTRES,
                                                     1000A   1000A




                                        MV/LV
                                        transformer                  M      M          M        M      M          M   M      M          M   M      M          M         M                M               M           M




 Document
STD.002.U07
                                                                           3*30kW                     3*30kW               3*30kW                3*30kW                75kW                             132kW
                                                                         318HE01MT10                318HE01MT13           318HE01MT16           318HE01MT19        316AB13MT10         75kW       317FA05MT10      110kW
                                                                         318HE01MT11                318HE01MT14           318HE01MT17           318HE01MT20                        317FA03MT10                  317FA07MT10
                                                                         318HE01MT12                318HE01MT15           318HE01MT18           318HE01MT21




Page
26/31
 A
Rev.
                                400 V                                   230V ac        +24V dc                                                            MOTOR CONTROL CENTRE
                                                                                                                    0V                 Typical schematic diagram - Motor 1 direction - K1 type

                                                                       -Q11           -Q12
                                                                                                                                                                                                             Drawer or Plate              I/O Compartment
                                                                                                                                                                                                                                                                              Digital output
                                  -Q1                    Precut-off                                                Yellow             Green             Red
                                                                                                                                                               -KA1

                                                    To Q1 Trip                                                                                                                                                                        12


                                                                                                                                                                                                                                      10                      C1       Start Command




                                                                                                       Available
                                                                                                                                              Failure


                                                                                                                            Running
                                 -KM1
                                                                                                                                                                                                                                                                               Digital input
                                                                                                                                                                                                                                      1
                                                                                                                                                                                                                                                              AV       Availability
                                      -F1                                                                                                                                                                                             7
                                                                                                                                                                                                                                                             B1        Feedback
                                                                                                                                                                                                                                      4
                                                                                                                                                                                                                                                             L1        Local Start
                                                                                                                                                                                                                                      3
                                                                                                                                                                                                                                                             LS        Local Stop
                                                                                                                                                        -Q1                                                                           2
                                                                        -KA1                     -KB               -KM1                 -F1                                                                                                                  HS        Emergency Shut-Down
                                                                                                                                                        Trip
                                                              -KB            -KM1



                                                         H Heavy start (if any)


                                                         I   Current measure or
                                                     /                                                                                                                                                                                      Motor Operating Mode :
                                                         J   Power measure
                                                                                                                                                                                                                                            Choice of Sequential/ Local mode is made by operator
                                                                                             1                                                                             3            4        2                                          on the Operator Station


                                                                                                                                                                                                     Field




MOTOR CONTROL CENTRES
POWER CONTROL CENTRES,
                                                                                             1                                                                             3            4

                                                             Visible Cut-off Switch
                                                                                                                                                                               L1

                                                                                                                                                                                                                                      Marshalling Board
                                                                                                                                                                      LS


                                                                                                                                                                               Pre-Cut off
                                                                                                                                                                                                                                                                               Digital input




 Document
                         3 Padlocks
                                                                                                                                                                                                                    S Speed monitor




STD.002.U07
                                                                                                                                                                                             2

                                                                                             7                                                                                 8                                                                              XS       Speed switch
                         Cable- Loop                                                                                                                              HS               E Emergency Shut-Down                                                      XXnn     Other machine sensors
                                                                                                                                                                                    pull rope                             24V dc
                                                M                                                                                                                                   (if applicable)
                                                                                                                                                                                                                                                                             Analogue input
                                            3




Page
27/31
                                                                                                                                                                                                                                                              YI       Motor Current or Power




 A
Rev.
                                400 V                                   230V ac        +24V dc                                                          MOTOR CONTROL CENTRE
                                                                                                               0V               Typical schematic diagram - Motor 2 directions - K2 type
                                                                                                                                                                                                   Drawer or Plate              I/O Compartment
                                                                       -Q11           -Q12
                                                                                                                                                                                                                                                                    Digital output
                                      -Q1                Precut-off                                           Yellow         Green              Green              Red
                                                                                                                                                                         -KA2    -KA1                                       12

                                                                                                                                                                                                                            10                      C1       Start Command Direction 1
                                                    To Q1 Trip
                                                                                                                                                                                                                            13

                                                                                                                                                                                                                            11                      C2       Start Command Direction 2




                                                                                                  Available
                                                                                                                                                         Failure




                                                                                                                       Running
                                                                                                                       Direction 1
                                                                                                                                          Running
                                                                                                                                          Direction 2
                           -KM1             -KM2
                                                                                                                                                                                                                                                                     Digital input
                                                                                                                                                                                                                            1
                                                                                                                                                                                                                                                    AV       Availability
                                      -F1                                                                                                                                                                                   7
                                                                                                                                                                                                                                                    B1       Feedback Direction 1
                                                                                                                                                                                                                            8
                                                                                                                                                                                                                                                    B2       Feedback Direction 2
                                                               -KM2     -KM1
                                                                                                                                                            -Q1
                                                                                                 -KB           -KM1              -KM2                   -F1 Trip
                                                               -KA1     -KA2
                                                                                                                                                                                                                            3
                                                         -KB       -KM1      -KM2                                                                                                                                                                  LS        Local Stop
                                                                                                                                                                                                                            4
                                                                                                                                                                                                                                                   L1        Local Start Direction 1
                                                                                                                                                                                                                            5
                                                                                                                                                                                                                                                   L2        Local Start Direction 2
                                                         H Heavy start (if any)                                                                                                                                             2
                                                                                                                                                                                                                                                   HS        Emergency Shut-Down
                                                         I   Current measure or
                                                     /                                                                                                                                                                            Motor Operating Mode :
                                                         J   Power measure
                                                                                                                                                                                                                                  Choice of Sequential/ Local mode is made by operator
                                                                                             1                                4                   5                                  10   11         3      2                     on the Operator Station


                                                                                                                                                                     Field




MOTOR CONTROL CENTRES
POWER CONTROL CENTRES,
                                                                                             1                                4                  5                              10        11

                                                             Visible Cut-off Switch
                                                                                                                L1                   L2
                                                                                                                                                                                               3


                                                                                                                 LS
                                                                                                                                                                                                                            Marshalling Board
                                                                                                                                  Pre-Cut off




 Document
                         3 Padlocks                                                                                                                                                            2




STD.002.U07
                                                                                             7                                       8                                                                                                                               Digital input
                         Cable- Loop                                                                          HS                         E Emergency Shut-Down
                                                                                                                                                                                                          S Speed monitor
                                                                                                                                           pull rope
                                                                                                                                           (if applicable)                                                                                          XS       Speed switch
                                                M
                                                                                                                                                                                                                                                    XXnn     Other machine sensors
                                            3                                                                                                                                                                   24V dc




Page
28/31
                                                                                                                                                                                                                                                                   Analogue input
                                                                                                                                                                                                                                                    YI       Motor Current or Power




 A
Rev.
                                400 V                                 230V ac       +24V dc                                                         MOTOR CONTROL CENTRE
                                                                                                           0V           Typical schematic diagram - Actuator 2 positions - KM type
                                                                                                                                                                                                                            Drawer or Plate          I/O Compartment
                                                                                                                                                                                                                                                                                         Digital output
                                  -Q1                    Precut-off                                       Yellow         Green              Green              Red
                                                                                                                                                                      -KA2    -KA1                                                               12

                                                                                                                                                                                                                                                 10                      C1       Start Command Direction 1
                                                    To Q1 Trip                                                                                                                                                                                                                                 (open)
                                                                                                                                                                                                                                                 13

                                                                                                                                                                                                                                                 11                      C2       Start Command Direction 2
                                                                                                                                                                                                                                                                                               (close)




                                                                                              Available
                                                                                                                                                     Failure




                                                                                                                   Direction 1
                                                                                                                                      Direction 2



                                                                                                                   Running
                                                                                                                                      Running
                          -KM1              -KM2
                                                                                                                                                                                                                                                                                          Digital input
                                                                                                                                                                                                                                                 1
                                                                                                                                                                                                                                                                         AV       Availability
                                                                                                                                                                                                                                                 7
                                      -F1                                                                                                                                                                                                                               B1        Feedback Direction 1
                                                                                                                                                                                                                                                 8
                                                                                                                                                                                                                                                                        B2        Feedback Direction 2
                                                                                                                                                                                                                                                 14
                                                                                                                                                                                                                                                                        XZ10      Position 1 switch (open)
                                                               -KM2   -KM1                                                                                                                                                                       15
                                                                                                                                                               - Q1                                                                                                     XZ20      Position 2 switch (close)
                                                                                            -KB           -KM1             -KM2                -F1             Trip                                                                              9
                                                               -KA1   -KA2                                                                                                                                                                                              XX10      Torque switch (if any)
                                                                                                                                                                                                                                                 3
                                                         -KB      -KM1   -KM2                                                                                                                                                                                           LS        Local Stop
                                                                                                                                                                                                                                                 4
                                                                                                                                                                                                                                                                        L1        Local Start Direction 1 (open)
                                                                                                                                                                                                                                                 5
                                                                                                                                                                                                                                                                        L2        Local Start Direction 2 (close)


                                                                                                                                                                                                                                                       Motor Operating Mode :
                                                                                                                                                                                                                                                       Choice of Sequential/ Local mode is made by operator
                                                                                        1                                 4                   5                                   10   11       9                             3                        on the Operator Station


                                                                                                                                                                 Field
                                                                                                                                                                                                          Actuator




MOTOR CONTROL CENTRES
POWER CONTROL CENTRES,
                                                                                                                                                                                                    XZ10        XZ20
                                                                                                                                                                                                    Position1   Position2
                                                                                        1                                 4                  5                               10        11                                                        Marshalling Board
                                                                                                                                                                                            9
                                                           Visible Cut-off Switch
                                                                                                            L1                   L2                                                                 Torque
                                                                                                                                                                                            3       switch
                                                                                                                                                                                                                                                                                          Digital input
                                                                                                                                                                                                                                                                         XXnn     Other machine sensors
                                                                                                             LS
                                                                                                                                                                                                                                        24V dc
                                                                                                                              Pre-Cut off                                                                                                                                                 Analog input




 Document
                         3 Padlocks




STD.002.U07
                                                                                                                                                                                                                                                                         YZ10 Position Feedback
                                                                                        7                                        8
                         Cable- Loop
                                                                                                                                                                                                                                                                                       Analogue output

                                                M                                                                                                                                                                                                                        ZC       Position set point




Page
29/31
                                            3




 A
Rev.
                                400 V                                     230V ac         230V UPS        +24V dc                                                               MOTOR CONTROL CENTRE
                                                                                                                                    0V                   Typical schematic diagram - Motor speed variation - VS type
                                                                                                                                                                                                                                    Drawer or Plate         I/O Compartment
                                                                    -Q11             -Q13              -Q12
                                                                                                                                                                                                                                                                                                Digital output
                                      -Q1                    Precut-off                                                             Yellow             Green             Red
                                                                                                                                                                                -KA1                 Note: fast fuses for VSD protection

                                                       To Q1 Trip                                                                                                                                                                                       12


                                                                                                                                                                                                                                                        10                      C1       Start Command
                                 -KM1




                                                                                                                        Available
                                                                                                                                                               Failure


                                                                                                                                             Running
                                                                                                                                                                                                                                                                                                 Digital input
                                                                                                                                                                                                                                                        1
                                                                                                                                                                                                                                                                                AV       Availability
                                       -F1                                                                                                                                                                                                              7
                                                                                                                                                                                                                                                                               B1        Feedback
                                                                                                                                                                                                                                                        4
                                                                                                                                                                                                                                                                               L1        Local Start
                                                                                                                                                                                                                                                        3
                                                                                                                                                                                                                                                                               LS        Local Stop
                                                                                                                                                                                                                                                        16
                                                -KA1                                                                                                                     - Q1                                                                                                  LU        Local Speed-up
                                                                    -KA1                                          -KB                -KM1                -F1                                                                                            6
                                                                                                                                                                         Trip                                                                                                  LD        Local Speed-down
                                                                -KB       -KM1                                                                                                                                                                          2
                                                                                                                                                                                                                                                                               HS        Emergency Shut-Down


                                                       -C1



                                                                                                                                                                                                                                                              Motor Operating Mode :
                                                                                                                                                                                                                                                              Choice of Sequential/ Local mode is made by operator
                                                                                                                                                                                                                                                              on the Operator Station


                                                                                                              1                                                                        3            4       16         6       2




MOTOR CONTROL CENTRES
POWER CONTROL CENTRES,
                                                                                                                                                                                                                                   Field
                                                                          Fieldbus to PCS controller

                                                                                                              1                                                                        3            4      16          6

                                                               Visible Cut-off Switch
                                                                                                                                                                                           L1       LU      LD                                          Marshalling Board


                                                                                                                                                                                 LS
                                                                                                                                                                                                                                                                                                 Analog input




 Document
                                                                                                                                                                                           Pre-Cut off




STD.002.U07
                                                                                                                                                                                                                                                                                YI       Motor Current or Power
                         3 Padlocks
                                                                                                                                                                                                                           2
                                                                                                                                                                                                                                                                                YS       Speed feedback

                                                                                                              7                                                                            8                                               To VSD
                                                                                                                                                                                                                                           inside MCC
                         Cable- Loop                                                                                                                                            HS             E Emergency Shut-Down                                                                          Analogue output
                                                                                                                                                                                                pull rope




Page
30/31
                                                                                                                                                                                                (if applicable)                                                                SC        Speed set-point
                                                M
                                            3




 A
Rev.
                                 400 Vac                                                                   MOTOR CONTROL CENTRE
                                                                                                 Typical schematic diagram - Package circuit breaker - Q type
                                                                                                                                                           Drawer or Plate   I/O Compartment
                                                                                                                                                                                                          Digital input

                                                                                                                                                                             24V dc

                                      Q1


                                                                                                                                                                                           AV    Availability




                                                                          /   I   Current measure or
                                                                              J Power measure




                                                                                                                            Field




MOTOR CONTROL CENTRES
POWER CONTROL CENTRES,
                                                                                                                                                                             Marshalling Board

                                                 Visible Cut-off Switch




 Document
STD.002.U07
                                                                                                                                                                                                        Analogue input
                         3 Padlocks
                                                                                                                                                                                           YI    Current or Power




Page
31/31
                                       PACKAGE




 A
Rev.

								
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