6
Electrical Protection
Electrical Protection
• The EV Charger must be permanently connected to the electrical Earth of the
installation.
• Certied Circuit Breakers should be installed upstream and shall comply with stan-
dard with IEC 60898-1. The rated voltage and current of the Circuit Breakers shall be
240V 40A for the 7kW model and 400V/20A for the 11kW model.
• A certied Residual Current Device (RCD) should be installed upstream. RCDs shall
comply with one of the following standards: IEC 61008-1 or IEC 61009-1. The RCD
can be a type A 30mA RCCB or RCBO, also can be Type B RCD, in accordance with local
regulations. The rated voltage and current of the RCD shall be 240V 40A for the 7kW
model and 400V/20A for the 11kW model.
• Both an MCB and RCD (i.e. RCCB, RCBO, etc.) needs to be installed. Note: the RCD
needs to be the rst device upstream from the EV charger and mounted in close prox-
imity to the charger.
• The combination of the EV Charger and the RCD (i.e. RCCB, RCBO, etc.) installed up-
stream can meet the requirements of OVCIII.
• The installer must select the RCD, Circuit Breaker, earthing conguration (ground
earth connection is required) and any devices by following the current local
regulations. Local installation guideline should also be followed to ensure the unit is
installed in accordance to any local restrictions. All these protection devices shall be
chosen with appropriated technical specication, such as:
Working voltage ≥ charging station working voltage,
Working current ≥ charging station working current,
Ingress Protection (IP) ≥ IP54 or installed inside IP54 protection box
for outdoor use.
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