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Charging Plugs and Sockets
and EV Charging Stations

    Electric Mobility is the Future

    The future belongs to mobility with electric
    vehicles. There is a political will to ad-
    vance our electric mobility - especially in
    congested urban areas - in order to pro-
    tect our fossil fuel reserves and to keep
    our air clean. In Germany alone, experts
    anticipate at least 1 million electric vehi-
    cles by 2020. A pre-requisite for the power
    supply of these electric vehicles was for
    complete standardisation regarding the
    charging plug and socket as well as a           The Principle
    Europe-wide agreement on the infrastruc-
    ture of EV charging stations; furthermore       In Germany's European draft standard
    the development of a corresponding com-         (which was compiled with significant
    munication between electric vehicle and         support from WALTHER) 7-pole charging
    charging station and of billing systems for     plugs and sockets have been defined
    consumed power. To a great extent               which transmit the charging power
    WALTHER was influentially involved in this      required for the shortest charging times
    preparatory work and was a valuable             to the vehicle and which contain the
    participant due to its expertise in plugs       communication for a convenient and
    and sockets, power distributors for outside     safe charging process.
    areas, control, communication and billing
    systems.                                        Besides the main power contacts (L1, L2,
                                                    L3, N and PE) there are two additional
    The task for the next few months and            control contacts (CP and PP) for data
    years will be for our electrical industry to    transmission and cable recognition. All
    establish a dense network of EV charging        current and future functionalities which
    stations in Germany and Europe. This will       car manufacturers and power suppliers
    allow for trouble free recharging of electric   may include have been considered.
    vehicles and will ensure the power sup-
    pliers' payment for their electricity sup-      The vehicle can either be charged on the
    plies.                                          AC network (single phase with 230 Volt)
                                                    or on the three-phase network (3 phases
    Through intensive research and with great       with 400 Volt). This allows the transmis-
    effort and considerable financial means,        sion of charging powers of 3 kW up to
    both automotive and battery manufactu-          43 kW.
    rers will make electric vehicles ready for
    the market. Simultaneously an infrastruc-
    ture of EV charging stations has to be
    established. Only then will there be elec-
    tric vehicles. Without an adequate network
    of (re-)charging stations electric vehicles           PP   CP

Charging Cable and
Charging Plug and Socket

electrical connection between the vehicle
socket and the charging socket inside
the charging facility (pillar or wall
enclosure/wall box). This connection
is established by means of a special
charging cable. Depending on the type
of vehicle and the installed charging
technology the charging cable is
configured differently. According to
current international standards, the
European draft standard provides for
identical plugs on both sides of the
charging cable. This ensures easy
handling for the driver.

    EV Charging Stations

    As we know from our many years of
    experience with energy distribution
    systems and billing systems, there are
    many different system solutions for
    charging stations (large leisure facilities,
    marinas etc.). They mainly differ in their
    mechanical and electrical construction
    (centralized, de-centralized etc.) and in
    the method of energy metering and billing.

    Three proven versions with
    Different Payment Methods

    Coins or Tokens

    The charging power is paid with coins
    or tokens. Either the consumed energy is
    measured by means of built-in meters or
    the charging socket is activated for a
    prepaid period of time, independent of
    the amount of energy. This solution is
    particularly suitable for public areas as no   Part no. 821 47 001   Part no. 821 48 001
    infrastructure other than the standard         Coin operated         Prepaid card operated
                                                   charging station      charging station
    supply line is required. Charging stations
    for 4 EVs are available from stock - one
    version to start with right away.

    Prepaid cards

    The charging power is paid with credit
    card sized prepaid cards. The consumed
    energy is measured by means of built-in
    meters and the amount used is charged
    from the prepaid card at the end of the
    charging process. Great importance was
    attached to the ease of handling and
    therefore customer acceptance.
    This solution is particularly suitable for
    public areas (towns and municipalities,
    shopping centres etc.) since no infrastruc-
    ture (e.g. data lines or networking) is
    required except the supply line. Charging
    stations for 2 EVs are available from
    stock - more versions to start with
    right away.

                                                                         Part no. 833 49 001
                                                                         Billing system with all
                                                                         options included

Billing Systems

Billing systems are mainly used with
medium-sized and large decentralised
applications, both in public and non-public
areas. The consumed energy in kWh is
measured by means of electronic meters
(single or 3-phase) inside the charging
stations, where the consumption data is
saved and then transmitted to the control

In realised systems both wired systems
(data lines, bus systems like EIB/KNX         Software for administration of charging stations
etc.) and wireless data transmission
systems (RF transmission, GSM, WLAN
etc.) have successfully been implemented
as transmission media between charging
station and control centre. Thereby the
switching operations (switching on and off)
are also activated out from the control

Software for the administration of up
to 600 charging stations (expandable)
converts the consumption values in
money as specified by the operator and
transmits them directly for billing.

A wired data transmission or infrastructure
is often economically impossible or does      Site plan (example) for selecting the desired charging station
not make sense in widespread estates
or very large facilities. In this case the
functions can be realised by means of
GSM via server portal and/or mobile

                                              Status and administration of 4 electric vehicles

                                              Overview and consumption values of an area with 80 charging

    Billing Systems

     he different charging stations are
    configured via the server portal. The
    consumption data of the built-in energy
    meters is used for consumption-based
    billing. The charging socket is then
    activated and is displayed on the
    charging station.

    Communication between charging
    stations, server portal, energy supply
    companies and mobile phone is effected
    wirelessly via GSM by SMS. Switching      System settings with central functions ("all ON", "all OFF",
    status and consumption data can be        "Reset") and price unit for billing
    transmitted to the mobile phone
    respectively and be activated if

                                              Display of status and consumption data information for
                             Utility          2 EVs on the server portal

                                              Server portal for control and administration of charging stations

Charging cables

The European draft standard allows char-
ging currents of 16, 32 or 63 A. Matching
charging cables are available depending
on vehicle, weight, handling etc.

In the communication between charging
station and vehicle (mode 2 and mode 3)
the current range of the charging cable
(electrical coding inside the plug) is for
safety reasons automatically checked
prior to the charging process.

                                                                      Part no. 7 711 AB
                                                                      Charging cable, mode 2,
                                                                      16 A

Charging cable with in-cable control
box (Mode 2)

For charging in domestic areas a charging
cable with a so called "In-Cable Control
Box" is required. This box has to replace
an RCD in case of "unknown" electrical
installation and to provide the required
safety features and communication to the
vehicle. In many cases this charging cable
is supplied with the vehicle.                                 Part no. 7 711
                                                              Charging cable, mode 3,
Charging cable with full                                      16 A
communication (Mode 3)

These charging cables have identical
plugs on both sides. They are used with
all new generation vehicles and allow
charging with 16 to 63 A. Depending on
the vehicle size the charging cable may
have different cable cross sections.

                                                                                        Part no. 7 210 SL
                                                                                        Charging plug 16 A,

                                               no. 7 410 SL
                                              rging socket
                                             A, screwless

    Wallbox or E-BoxX is the designation for
    wall-mounted EV supply units. These are
    used in garages, carports, wall areas etc.

    In the corresponding standards, versions
    for mode 1 to mode 3 have been defined.
    RCD, MCB and charging socket (mode 1)
    are available as safety features. Additional
    data transmission and safety functions
    with mode 2 and mode 3.
                                                     Part no. 6E59 00 01                 Part no. 6E59 00 02
                                                     Schuko socket, RCD/MCB, 16 A        Schuko socket, RCD 16 A, MCB 16 A
    The choice of the wallbox depends
    on the existing or future electric vehicle.

    The existing or future electric vehicle
    determines the choice of the wallbox
    which then has to be installed by a
    professional electrical company. Only
    an electrical supply is required. The
    safety features are all integrated in
    the WALTHER wallbox. Generally also
    the wallboxes differentiate between
    single-phase and/or three-phase charging
    in the power range of 3 kW to 40 kW.

    WALTHER produces wallboxes with
    Schuko sockets or 3, 5 and 7-pole CEE
    sockets according to the new standard.
    On request available with integrated
    meter to view the consumption.

    All E-BoxX devices are available from
    stock or can be supplied within a few          Part no. 6E59 00 03                   Part no. 6E59 00 04
                                                   Schuko socket, RCD/MCB, 16 A, meter   Schuko socket, RCD 16 A, MCB 16 A, meter
    working days.

    Canopies, pole mounting etc.
    (see our range of free standing units).

    Schuko sockets: DIN 49 440,                    Part no. 6E59 10 01                   Part no. 6E59 10 02
    available in compliance with French,           CEE socket 3 x 16 A, RCD/MCB, 16 A    CEE socket 3 x 16 A, RCD 16 A, MCB 16 A
    Belgian, Danish, British, Swiss and other
    national standards on request.

Part no. 6E59 10 03                                             Part no. 6E59 10 04
CEE socket 3 x 16 A, RCD/MCB 16 A, meter                        CEE socket 3 x 16 A, RCD/MCB 16 A, meter

Part no. 6E59 10 06                                             Part no. 6E59 10 07
Schuko socket, CEE socket 3 x 16 A, RCD/MCB 16 A, meter         Schuko socket, CEE socket 3 x 16 A, 2 x RCD/MCB, 16 A

                                                                Part no. 6E59 10 09
                                                                Schuko socket, CEE socket 3 x 16 A, RCD 16 A, MCB 16 A
Part no. 6E59 10 08
Schuko socket, CEE socket 3 x 16 A, RCD 16 A, MCB 16 A, meter

     Part no. 6E92 01 01                 Part no. 6E92 01 02                       Part no. 6E92 01 03
     CEE socket 5 x 16 A, RCD/MCB 16 A   CEE socket 5 x 16 A, RCD 16 A, MCB 16 A   CEE socket 5 x 16 A, RCD/MCB 16 A, meter

     Part no. 6E92 11 01                 Part no. 6E92 11 02                       Part no. 6E92 11 03
     CEE socket 5 x 32 A, RCD/MCB 32 A   CEE socket 5 x 32 A, RCD 32 A, MCB 32 A   CEE socket 5 x 32 A, RCD/MCB 32 A, meter

     Part no. 6E82 77 01                 Part no. 6E82 77 02                       Part no. 6E82 77 04
     RCD 32 A, MCB 16 A, MCB 32 A,       RCD 32 A, MCB 16 A, MCB 32 A,             RCD 63 A, MCB 16 A, MCB 63 A,
     contactor, PWM                      meter, contactor, PWM                     meter, contactor, PWM

More solutions for charging
at home

If space is an issue in garages, the mini
combination 114 is the solution. The
elegantly designed WALTHER wall socket
combines a 5-pole 400 V CEE socket
(16 A) which can be used for charging
purposes with a normal Schuko socket.

Supplementary to the E-BoxX, WALTHER                            Part no. 114

offers CEE wall sockets for EV charging
which are equipped with a switch and a
mechanical interlock for the plug. These
features significantly increase the safety
for private users.

With the help of the switch the user can
for example make sure his charging
connection is visibly switched off before
inserting or withdrawing the charging plug.
The interlock ensures that the charging
process can not be interrupted by a
wantonly or inadvertently withdrawn
charging plug.

The AT110 306 is a 3-pole 230 V wall
socket for single-phase charging with
16 A. The 5-pole 400 V versions AT110
and AT130 are for three-phase charging
with 16 A respectively 32 A.

                                                                Part no. AT 110306

                                              Part no. AT 110

  Planning aids for charging stations   X   Variants, options                 X                                            X

  Place of installation                     Interior area                         Outside area
  Pavement                                  Multi-storey car park                 Shopping centre
  Carport                                   Company car park
  Environmental conditions                  Guarded                               Unguarded
  Fleet charging station                    Temperature range                     Roofed
  Protection                                Door                                  Door with lock
  Flap                                      Flap with lock                        Sockets freely accessible
  Locking system
  Construction and material                 Standing version                      Wall mounted version
  Stainless steel, lacquered                PVC                                   Bollard form (round)
  Pillar form (square)
  Billing                                   kWh                                   Charging time
  kWh and/or charging time                  no metering
  Number of EVs to be charged               1                                     2
  Type of vehicle                           Smart                                 Mini
  Other:                                    Other:                                Other:
  Charging plugs and sockets                Schuko (16 A), country-specific       CEE 16 A 3-pole (blue)
  CEE 16 A 5-pole                           CEE 32 A 5-pole                       CEEplus
  CEPro                                     EV 7-pole to 63 A,
                                            future standard
  Required charging current per EV          16 A, 230 V, single-phase             16 A, 400 V, three-phase
  32 A, 230 V, single-phase                 32 A, 400 V, three-phase              63 A, 230 V, single-phase
  63 A, 400 V, three-phase
  Existing power input for
  charging station
  16 A, 230 V, single-phase                 16 A, 400 V, three-phase              32 A, 230 V, single-phase
  32 A, 400 V, three-phase                  63 A, 230 V, single-phase             63 A, 400 V, three-phase
  Residual current device (RCD) available   Specification:

  Payment methods                           Tokens (e.g. 1 €)
  Coins (e.g. 1 €)                          Smart card                            RFID, transponder, chip
  Mobile phone                              Control centre with PC                Server portal
  for free                                  Flat fee
  Operating functions                       Display                               Keys
  none                                      Access card/chip
  Communication                             LAN                                   WLAN
  PLC                                       GSM                                   Bus system
  Energy supplier                           Specification:
                                                                                                                                  WW 10 286/X-09/1/S

  Project                                   Exploration                           Planning
  Realisation until                         Number of charging stations

Present state (update):

                                                                                      Walther-Werke • Ferdinand Walther GmbH
                                                                                      Ramsener Straße 6 • 67304 Eisenberg/Pfalz
                                                                                      Telefon + (49) 6351 / 475-0
                                                                                      Fax + (49) 6351 / 475-227

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