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					Technical specification for tender              b6338362-5ae8-488a-af1c-b52b6016c067.doc




                        CM3000 Specifications
                        In short




Last update :27-03-11
Technical specification for tender                                                                                                                     b6338362-5ae8-488a-af1c-b52b6016c067.doc




Table of contents:

2.1      GEN ERAL PROVIS IONS .................................................................................................................................................................... 3

2.2      MEAS URED VALUES .......................................................................................................................................................................... 3

2.3      DEMAND ................................................................................................................................................................................................... 4

2.4      SAMPLING ............................................................................................................................................................................................... 4

2.5      HARMONIC RES OLUTION............................................................................................................................................................... 5

2.6      CURRENT INPUTS ................................................................................................................................................................................ 5

2.7      VOLTAGE INPUTS ............................................................................................................................................................................... 5

2.8      ACCURACY ............................................................................................................................................................................................. 5

2.9      WAVEFORM CAPTURE ..................................................................................................................................................................... 5

2.10     DISTURB ANCE DET ECTION (SAG AND SW ELL DETECTION) CM-3350 ................................................................... 6

2.11     INPUT/ OUTPUT ..................................................................................................................................................................................... 6

2.12     OUTPUT RELAY CONTROL ............................................................................................................................................................ 6

2.13     LOGGING ................................................................................................................................................................................................. 6

2.14     ALARMING.............................................................................................................................................................................................. 7

2.15     OUTPUT RELAY CONTROL ............................................................................................................................................................ 7

2.16     FEATUR E ADDITION .......................................................................................................................................................................... 7

2.17     CONTROL POWER............................................................................................................................................................................... 8

2.18     COMMUNICATIONS............................................................................................................................................................................ 8

2.19     DISPLAY ................................................................................................................................................................................................... 8




Last update :27-03-11
Technical specification for tender                                                     b6338362-5ae8-488a-af1c-b52b6016c067.doc




2.1       General Provisions
-     Electronic circuit monitors shall provide true rms metered values. Information provided by each circuit monitor
      shall include frequency, temperature, current, demand current, voltage, real power, reactive power, apparent
      power, demand power, predicted demand power, power factor, accumulated energy, accumulated reactive energy,
      total harmonic distortion (THD) of each current and voltage, and K-factor of each current.
-     All setup parameters required by the Circuit Monitors shall be stored in nonvolatile memory and retained in the
      event of a control power interruption. Any battery or other device used to provide nonvolatile memory shall be
      serviceable from the front of the circuit monitor and servicing shall not require removing the circuit monitor from
      the gear in which it is mounted.
-     The Circuit Monitor may be applied in three-phase, three- or four-wire systems. A fourth CT input shall be
      available to measure neutral or ground current. If the fourth CT is not used, then a residual current shall be
      calculated by vectorial addition of the phase currents. In four-wire connections the Circuit Monitor shall utilize
      the circuit neutral common reference and not earth ground, to provide metering accuracy.
-     The Circuit Monitor shall be capable of being applied without modification at nominal frequencies of 50, 60, or
      400 Hz.

2.2       Measured values
-     The following metered values shall be measured by the Circuit Monitor. In addition, the circuit monitor shall
      record and save in nonvolatile memory the minimum and maximum values of all listed values since last reset. The
      circuit monitor shall also record and save in nonvolatile memory the interval minimum, maximum, and average of
      any of the values pre-defined over a user specified interval.
      - Real-Time Readings
          - Current (Per-Phase, N, G, 3-Phase Avg, Apparent rms, % Unbalanced )
          - Voltage (L–L Per-Phase, L-L 3-Phase Avg, L–N Per-Phase, 3-Phase Avg, Neutral to Ground, %
               unbalanced)
          - Real Power (Per-Phase, 3-Phase Total)
          - Reactive Power (Per-Phase, 3-Phase Total)
          - Apparent Power (Per-Phase, 3-Phase Total)
          - Power Factor (True)(Per-Phase, 3-Phase Total)
          - Power Factor (Displacement)(Per-Phase, 3-Phase Total)
          - Frequency
          - Temperature (Internal Ambient)
          - THD (Current and Voltage)
          - K-Factor (Per-Phase)
      - Energy Readings
          - Accumulated Energy (Real kWh, Reactive kVarh, Apparent KVAh) (Signed/Absolute)
          - Incremental Energy (Real kWh, Reactive kVarh, Apparent KVAh) (Signed/Absolute)
          - Conditional Energy (Real kWh, Reactive kVarh, Apparent KVAh) (Signed/Absolute)
          - Reactive Energy by Quadrant
      - Demand Readings
          - Demand Current (Per-Phase present, 3-Phase Avg, Neutral)
               - i) Last complete interval
               - ii) Peak
          - Demand Voltage (L-N, L-L, Per-Phase, 3-Phase avg.)
      - Last complete interval
               - ii) Minimum
               - iii) Peak
      - Average Power Factor (True), (3-Phase total)
      - Last complete interval
               - ii) Coincident with kW peak
               - iii) Coincident with kVAR peak
               - iv) Coincident with kVA peak
      - Demand Real Power (3-Phase Total)

Last update :27-03-11     - 3-
Technical specification for tender                                                     b6338362-5ae8-488a-af1c-b52b6016c067.doc




      -   Last complete interval
             - ii) Predicted
             - iii) Peak
             - iv) Coincident kVA Demand
             - v) Coincident kVAR Demand
      -   Demand Reactive Power (3-Phase Total)
      -   Last complete interval
             - ii) Predicted
             - iii) Peak
             - iv) Coincident kVA demand
             - v) Coincident kW demand
      -   Demand Apparent Power (3-Phase Total)
      -   Last complete interval
             - ii) Predicted
             - iii) Peak
             - iv) Coincident kVA demand
             - v) Coincident kW demand
      -   Power Analysis Values
          - THD – Voltage, Current (3-Phase, Per-Phase, Neutral)
          - thd - Voltage, Current (3-Phase, Per-Phase, Neutral)
          - Total Demand Distortion
          - K-Factor (Per-Phase)
          - Crest Factor (Per-Phase)
          - Displacement Power Factor (Per-Phase, 3-Phase)
          - Fundamental Voltage, Magnitude and Angle (Per-Phase)
          - Fundamental Currents, Magnitude and Angle (Per-Phase)
          - Fundamental Real Power (Per-Phase, 3-Phase)
          - Fundamental Reactive Power (Per-Phase)
          - Harmonic Power ((Per-Phase, 3-Phase)
          - Phase Rotation
          - Unbalance (Current and Voltage)
          - Harmonic Magnitudes & Angles (Per-Phase)
          - Distortion Power
          - Distortion Power Factor

2.3       Demand
-     All power demand calculations shall use any one of the following calculation methods, selectable by the user.
-     Thermal demand using a sliding window updated every 15 seconds. The window length shall be set by the user
      from 5-60 minutes in five minute increments.
-     Block interval, with optional sub-intervals. The window length shall be set by the user from 5-60 minutes in 5
      minute intervals. The user shall be able to set the sub-interval length from 5-30 minutes in 5 minute intervals.
-     External Pulse Synchronization, utilizing a synch pulse provided externally. An optional status input shall be used
      to sense the pulse.
-     Sliding block interval with continuous sliding 15 second subintervals.
-     The default demand calculation method shall be a 15 minute sliding window thermal demand.
-     Each Circuit Monitor shall be capable of receiving a broadcast message over the communications network that can
      be used to synchronize demand calculations by several Circuit Monitors. This message need not be addressed
      specifically to any one Circuit Monitor.

2.4       Sampling
-     The current and voltage signals shall be digitally sampled at a rate high enough to provide true rms accuracy to the
      63rd harmonic (fundamental of 60 Hz).
-     The circuit monitor shall provide continuous sampling at a minimum of up to128 samples/cycle, simultaneously
      on all voltage and current channels in the meter.


Last update :27-03-11     - 4-
Technical specification for tender                                                      b6338362-5ae8-488a-af1c-b52b6016c067.doc




2.5       Harmonic resolution
-     Advanced harmonic information shall be available via the Circuit Monitor. This shall include the calculation of
      the harmonic magnitudes and angles for each phase voltage and current through the 63rd harmonic.
-     Harmonic information shall be available for all three phases, current and voltage, plus the neutral current. To
      ensure maximum accuracy for analysis, the current and voltage information for all phases shall be obtained
      simultaneously from the same cycle.
-     The harmonic magnitude shall be reported as a percentage of the fundamental or as a percentage of the rms values,
      as selected by the user.

2.6       Current inputs
-     The circuit monitors shall accept current inputs from standard instrument current transformers with 5 amp
      secondary output and shall have a metering range of 0-10 amps with the following withstand currents: 15 amp
      continuous, 50 amp 10 sec per hour, 500 amp 1 sec per hour.
-     Current transformer primaries through 32 kA shall be supported.

2.7       Voltage inputs
-     The circuit monitor shall allow connection to circuits up to 600 volts AC without the use of potential transformers.
      The circuit monitor shall also accept voltage inputs from standard instrument potential transformers with 100,110,
      115, 120 volt secondary output. The circuit monitor shall support PT primaries through 1.200 kV.
-     The nominal full scale input of the circuit monitor shall be 347 Volts AC L-N, 600 Volts AC L-L. The monitor
      shall accept a metering over-range of 50%. The input impedance shall be greater then 2 Mohm.

2.8       Accuracy
-     The circuit monitor shall comply with ANSI C12.20 and IEC60687 0.5 class for revenue meters and shall provide
      wire seal attachment ability to protect revenue settings.
-     The Circuit Monitor shall be accurate to 0.04% of reading for power and energy. Voltage and current shall be
      accurate to 0.05% of reading plus 0.05% of full scale. Power factor metering shall be accurate to +.002 for |pf|>.5.
      Frequency metering shall be accurate +.01 Hz at 45-67 Hz.
-     These accuracies shall be maintained for both light and full loads and no annual recalibration by users shall be
      required to maintain these accuracy’s.

2.9       Waveform capture
-     Steady State Waveform Capture
      - The circuit monitor shall provide steady state waveform captures of the voltage and current waveforms.
      - The monitor shall record at 128 samples per cycle simultaneously on all current and voltage channels.
      - The circuit monitor shall provide two types of waveform capture manual initiation and over/under condition.
      - Either type of waveform capture shall be initiated either from a personal computer workstation (PCW) using
          the appropriate Power Monitoring and Control Systems software, or by the circuit monitor as a user defined
          response to an alarm or input condition. The circuit monitor shall also employ an external trigger to initiate
          the waveform capture. The capture sequence shall be initiated within 1 millisecond after the trigger is sensed.
          Pre-event cycles included in the waveform capture shall be user definable from 2 - 10 cycles.
      - The Circuit Monitor shall capture, and store in internal non-volatile memory, 128 digitally sampled data points
          for each cycle of each phase voltage and current for up to 30 cycles per capture. When sampling at 64 times
          per cycle, the circuit monitor shall store up to 50/60 cycles of data per capture. The number of waveform
          captures stored onboard the circuit monitor shall be dependent on the amount of memory available.
      - The Circuit Monitor shall transmit the waveform samples over the network to the personal computer
          workstation for display, archival, and analysis.
      - Harmonic analysis performed on the captured waveforms shall resolve harmonics through the 63rd .
      - The data used for the four cycle waveform capture display shall also be used to derive metered quantities in
          order to provide meaningful additional data.
      - All waveforms must reflect actual circuit performance. Waveforms synthesized or composed over time shall
          not be acceptable.
      - Steady State;. Manual initiation 128 samples/cycle, 63 rd harmonic

Last update :27-03-11      - 5-
Technical specification for tender                                                        b6338362-5ae8-488a-af1c-b52b6016c067.doc




          Disturbance (CM3350 only) Manual or alarm initiation 128 samples/cycle for 12 to 64 cycles. Adjustable
          number of pre-alarm cycles
     -    Disturbance Detection (CM3350 only)
          - Continuously monitors for sags, swells, and other short-term variations
          - 128 samples/cycle
          - Responds in less than ½ cycle
          - On detection: Alarm, log, save waveform

2.10      Disturbance Detection (Sag and Swell detection) CM-3350
-    The circuit monitor shall include the following Sag and Swell detection capabilities:
     - The Circuit Monitor shall continuously monitor for disturbances in the current and voltage. There shall be
        zero blind time; each cycle shall be individually monitored.
     - Disturbance events less than one cycle in length shall be detected.
     - The circuit monitor shall be able to set a threshold and delay which shall be used by to determine if an event
        has occurred. The threshold shall be user defined as either a fixed setpoint or relative setpoint. When using the
        relative setpoint, the Circuit Monitor will set the nominal current or voltage equal to its present average value.
        The Circuit Monitor will automatically adjust the nominal current and voltage values to avoid nuisance alarms
        caused by gradual daily variations of currents and voltages.
     - Upon detecting a disturbance, the Circuit Monitor shall be capable of :
        - Logging a waveform of the event, 12, 24, 36, 48, or 60 cycles in length, of a ll phase currents and voltages.
        - Operating any output relay on an optional I/O module.
        - Recording the disturbance into an event log with a date and time stamp to the millisecond.
        - Causing an operator alarm on the display and at the PC workstation if supplied with power management
             software.

2.11      Input/Output
The circuit monitor shall support multiple input/output options including digital inputs, mechanical relay outputs, and
solid state KYZ pulse outputs.
The circuit monitor shall be capable of operating a solid state KYZ output relay to provide output pulses for a user
definable increment of reported energy. Minimum relay life shall be in excess of one billion operations. The standard
KYZ output shall operate up to 240 volt AC, 300 volt DC, 96mA max, and provide 3750 volt rms isolation.
The circuit monitor shall have provision for adding optional input and output capability in the form of option cards
that are field installable. The option card shall provide a minimum of four digital inputs, three output relays, and one
solid-state output.
The digital inputs shall have four operating modes: “normal” mode for simple on/off digital inputs; “demand interval
synch pulse” to accept a demand synch pulse from a utility demand meter; “time sync” input from a GPS receive r to
synchronize the internal clock of the circuit monitor; and “conditional energy control” input to control conditional
energy.

2.12      Output Relay Control
-    Relay outputs shall operate either by user command sent over the communication link, or set to operate in
     response to user defined alarm event.
-    Output relays shall close in either a momentary or latched mode as defined by the user.
-    Each output relay used in a momentary contact mode shall have an independent timer that can be set by the user.
-    It shall be possible for individual relay outputs to be controlled by multiple alarms in a wired “OR” configuration.

2.13      Logging
-    The circuit monitor shall provide for onboard data logging. Each circuit monitor shall be able to log data, alarms
     and events, and waveforms. The monitors shall offer 8MB of on-board nonvolatile memory. Logged information
     to be stored in each Circuit Monitor include the following:
-    Up to 14 separate data logs configurable by the user. Each log entry shall be date and time stamped to the
     millisecond. Each log entry shall hold data of up to 96 parameters each. It shall be possible to set up each log to
     take data at a different user defined schedule interval. In addition, it shall be possible for a user to define an event


Last update :27-03-11     - 6-
Technical specification for tender                                                     b6338362-5ae8-488a-af1c-b52b6016c067.doc




     or new min/max condition that will trigger log file entries. Data logs can be configured by users to be Fill & Hold
     or Circular (FIFO).
-    A Min/Max log file. This log file shall include the time, date, and value for the minimum and maximum of each
     of the real-time metered values. The circuit monitor should also log min/max/average of selected parameters on a
     selected interval from a user selected interval length from 1-1440 seconds.
-    An alarm and event log. This log shall contain time, date, event information, and coincident informat ion for each
     user defined alarm or event. This log shall have a capacity of up to 1,000 events and date/time stamp to the
     millisecond. Also the circuit monitor shall record selected parameters at 100 millisecond intervals during events
     and alarms.
-    Waveform logs. This log shall store captured waveforms, 4, 12, 24, 36, 48, and 60 cycle as defined by the user.
     Waveform log entries shall be scheduled at a user defined interval, externally triggered, or forced in response to a
     user defined event. Waveform logs shall be either Fill & Hold or Circular (FIFO) as defined by the user.
-    The circuit monitor shall have a default values for all logs loaded at the factory and begin on device power up.

2.14      Alarming
-    Alarm events shall be user definable.
-    The following classes of events shall be available as alarm events:
     - Over/under current
     - Over/under voltage
     - Current imbalance
     - Phase loss, current
     - Phase loss, voltage
     - Voltage imbalance
     - Over kVA
     - Over kW or kVAR into/out of load
     - Over/under frequency
     - Under power factor, true or displacement
     - Over THD
     - Over K-factor
     - Over demand, current or power
     - Reverse power
     - Phase reversal
     - Status Input change
     - End of incremental energy interval
     - End of demand interval
     - Over/under analog inputs
     - Current sag/swell
     - Voltage sag/swell
-    For each over/under metered value alarm, the user shall be able to define a pick-up, drop-out, and delay.
-    There shall be four alarm severity levels in order make it easier for the user to respond to the most important
     events first.
-    Indication of an alarm condition shall be given on the front panel.
-    The circuit monitor alarms response time shall meet the following: Standard, 1 sec.; High speed, 100 msec.,
     Disturbance, less than ½ cycle:
-    The circuit monitor shall provide Boolean alarms in the form of combine up to four other alarms with NAND,
     NOT, OR, and XOR

2.15      Output Relay Control
-    Relay outputs shall operate either by user command sent over the communication link, or set to operate in
     response to user defined alarm event.
-    Output relays shall close in either a momentary or latched mode as defined by the user.
-    Each output relay used in a momentary contact mode shall have an independent timer that can be set by the user.
-    It shall be possible for individual relay outputs to be controlled by multiple alarms in a wired “OR” configuration.

2.16      Feature addition
Last update :27-03-11    - 7-
Technical specification for tender                                                     b6338362-5ae8-488a-af1c-b52b6016c067.doc




-    The circuit monitor platform shall allow for upgrades to new features by firmware download. Downloads shall be
     accomplished via RS-485, or optional Ethernet ports. Downloads shall apply to an individual meter or to groups
     of meters over network communications.
-    Firmware upgrade
-    It shall be possible to field upgrade the firmware in the Circuit Monitor to enhance functionality. These firmware
     upgrades shall be done through either the front or rear communication connection. No Circuit Monit or
     disassembly or changing of integrated circuit chips shall be required. It shall not be necessary to de-energize the
     circuit or the equipment to upgrade the firmware.

2.17      Control power
-    The Circuit Monitor shall operate properly over a wide range of control power including 90-305 VAC or 100-300
     VDC. Connections to 18-60 VDC shall also be available.
-    Ride through capability shall be available for backup control power for up to 8 seconds.

2.18      Communications
-    The Circuit Monitor shall communicate via RS-485, and Ethernet simultaneously.
-    The Circuit Monitor shall provide Modbus communications using Modbus TCP via an Ethernet network at
     10/100Mbaud using UTP or Fiber connections. The Circuit Monitor shall provide the capability to communicate
     to 31 additional Modbus devices existing on RS-485 daisy chains and report data back to the PMCS application
     software or across the Ethernet network to other software applications.
-    The Circuit Monitor shall be equipped with a front panel communications port as standard equipment. The port
     shall be completely accessible during normal operation and shall not require exposure of the operator to life -
     threatening voltage when in use. The operator shall be able to quickly connect a small Personal Computer (PC) to
     this port without use of tools or splices. This front panel port shall have all of the communication functionality of
     the standard hard-wired rear port. When a connection is made to the front port, the Circuit Monitor shall disregard
     communication from the rear port until the front port is disconnected.

2.19      Display
-    The Circuit Monitor display shall allow the user to select one of three languages to view on the screen: English,
     French, or Spanish. The Circuit Monitor display shall also allow the user to select a date/time format a nd the
     ability to create additional screens for user-specified views and/or custom quantities without overwriting existing
     standard screens.
-    The Circuit Monitor display shall provide local access to the following metered quantities as well as the minimum
     and maximum value of each instantaneous quantity since last reset of min/max:
     - Current, per phase rms, 3-phase average and neutral (if applicable)
     - Voltage, phase-to-phase, phase-to-neutral, and 3-phase average (phase-to-phase and phase-to-neutral)
     - Real power, per phase and 3-phase total
     - Reactive power, per phase and 3-phase total
     - Apparent power, per phase and 3-phase total
     - Power factor, 3-phase total and per phase
     - Frequency
     - Demand current, per phase and three phase average
     - Demand real power, three phase total
     - Demand apparent power, three phase total
     - Accumulated Energy, (MWh and MVARh)
     - THD, current and voltage, per phase
     - K-factor, current, per phase
     - Reset of the following electrical parameters shall also be allowed from the Circuit Monitor display:
          - Peak demand current
          - Peak demand power (kW) and peak demand apparent power (kVA)
          - Energy (MWh) and reactive energy (MVARh)
     - Setup for system requirements shall be allowed from the Circuit Monitor display. Setup provisions shall
          include:
          - CT rating
          - PT rating
Last update :27-03-11     - 8-
Technical specification for tender                                                     b6338362-5ae8-488a-af1c-b52b6016c067.doc




          - System type [three-phase, 3-wire] [three-phase, 4-wire]
          - Demand interval (5-60 min.)
          - Watt-hours per pulse
     -    For ease in operator viewing, two displays are offered for local viewing of Circuit Monitor data. The liquid
          crystal display (LCD) shall include backlighting. The enhanced vacuum fluorescent display (VFD) shall be
          automatically activated by a proximity sensor as the operator approaches.




Last update :27-03-11     - 9-

				
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