KC-P30 Charging Station
Calibrating the device
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© KEBA
6.2.2
Functional tests, including accuracy checks
The following testing devices and test software are required for testing:
1. Electrical test load that simulates an electric vehicle with at least two dif-
ferent current levels, which can be used to draw energy from the charging
device.
2. A cable adapter that simulates an electric vehicle that is plugged into the
dispensing point of the charging device.
3. A normal performance measuring device that is connected between the
adapter mentioned in Point 2 and the test load mentioned in Point 1. The
normal performance measuring device must be metrologically traceable, in
the terms of § 47 MessEG.
4. Means of identification in order to be able to initiate a charging process at
the charging device.
For testing, at least two complete charging processes must be performed
with the charging station. In doing so, different means of identification (e.g.
RFID card and remote start) must be used.
To check the function and accuracy, proceed as follows:
1) Connect the cable adapter that simulates the electric vehicle to the
charging station.
2) Connect the normal performance measuring device between the cable
adapter and test load that simulate the electric vehicle.
3) Initiate the charging process using the means of identification selected
first (e.g. RFID card).
4) Watch the energy output over the display. The transmitted energy shown
on the display increases with current flow.
5) End the charging process by unplugging the plug.
6) Repeat the steps above with the second means of identification (e.g. re-
mote start).
It is assumed that the accuracy of the measurement of the energy output by
the charging station is primarily determined by the electricity meter, in com-
pliance with calibration law, and the corresponding declaration of conformity
of the charging station manufacturer. It is therefore sufficient to measure the
accuracy at a singular operating point and perform a no-load test for each
charging station.
The measurement deviation of the charging station is determined using what
is known as the continuous activation method, by comparing the work mea-
sured within the same time period for the charging station on the one hand,
and for the normal performance measuring device on the other. The length
of time must be allotted so that the smallest digit of the kWh value that is dis-
played remotely, in compliance with calibration law, changes value at least
100 times between the start and end of the measurement and at least 500
Wh of energy are transmitted.
The remote display, in compliance with calibration law, must be checked as
follows: