Operating instruction and technical description
EV tester type 1 and type 2 - 2.0
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Walther-Werke Ferdinand Walther GmbH
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4 Operation
4.1 Handling
For simulation purposes, a connection between one of the two charging sockets of the EV simulator (type 1
or type 2) and the charging infrastructure has to be established - either by inserting the firmly connected
charging cable or by using a separate mode 3 charging cable (without simulation of cable cross section or by
means of the provided measuring line for cable cross section simulation).
Photos: Connection possibilities EV tester/simulator type 1, type 2, Schuko socket for load connection and measuring line.
Attention:
Only one of the two charging sockets may be used shortly for measure purposes without permanent load at a
time. A simultaneous insertion of two cables is not permissible and may result in malfunctions and even
cause a short-circuit. Toggling between the two charging sockets is made by the changeover switch in the
middle of the operator panel.
The plug should only be withdrawn when the electric vehicle is switched off (EV status: B, C and D Aus/OFF).
The tester has no integrated interlock.
4.2 Switching on the EV simulator
The EV simulator is switched on by inserting the charging plug into the charging socket respectively by
applying the supply voltage of the charging device. There is no separate switch available. For safety reasons,
the plug has to be withdrawn after termination of the test procedure.
4.3 Measuring of built-in resistances inside type 2 plug
Acc. to IEC 61851-1, there is a resistor available inside the type 2 plug which shows the ampacity of the
charging cable. This resistor can be checked by means of the built-in measuring device.
Coding resistance inside charging plug and charging coupler (type 2)
Power [A]
Resistance [Ohm] (rated value) Cross section [mm²]
13
1500
1,5
20
680
2,5
32
220
6
63
100
16
Table : Ampacity with corresponding coding resistance and cable cross section
