Protection Device; Preparing For Energization - WEG WEMOB-STATION-CCS-30kW Series Installation And Operation Manual

3.3.3 Protection Device

ATTENTION!
The WEMOB-STATION must be connected to an exclusive four-pole protection circuit breaker
for the charging station power circuit with residual current protection 30 mA sensitivity (AC) type
A.
Determine the rated operating current of the circuit breaker upstream from the WEMOB-STATION charging
station according to the data provided by the manufacturer, the maximum input current of the station, the
short circuit levels of the installation and the station, the gauge and length of the power cables.
Also take into account the derating of the circuit-breaker rated current as a function of the ambient
temperature in which the circuit-breaker is installed (in the distribution panel or circuit-breaker board), in
addition to the selectivity of the protections.

3.3.4 Preparing for Energization

Before energizing the WEMOB-STATION, check that:

All the power, grounding and control connections are correct and secure;

The resistance between the ground (PE) of the station and the ground (PE) of the low voltage
switchgear complies with local regulations;

All tools, materials used in the installation or foreign objects that are not part of the product have
been removed from inside the WEMOB-STATION;

With the aid of a voltmeter (AC), check the line and phase voltage values. Voltages between
terminals R, S and T of Q1 circuit breaker must be within the station permissible operating range
(line voltage 380 - 415 V AC ± 10 %). Also check that the voltages between phases (RST) and
neutral (N) are within the station permissible operating range, phase voltage 220 - 240 V AC ± 10
%).
PE R S T
POWER INPUT
Figure 14: Power input
Installing and Connecting
N
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