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Are RCDs required on the AC input to Mode 4 EV chargers?

Bh

Hi all,

from personal experience, EV charging manufacturers often state that the power modules contained within their Mode 4 EV charger provide a "galvanically isolated DC supply" but, when asked, doesn't involve using safety isolating transformers that conform to BS EN 61558-2-4. As per regulation 722.531.3.101 of BS 7671, does this mean that a 30mA RCD is required on the AC input to the Mode 4 EV charger?

Thanks in advance,

Bh.

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  • 0

    Sorry to tail onto an old thread, but one of the example isolated mode 4 charger systems has PFC on the front end (IEC 61851-23). As this is all prior to isolation I guess Type B would be required in this case?

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    Sorry to tail onto an old thread, but one of the example isolated mode 4 charger systems has PFC on the front end (IEC 61851-23). As this is all prior to isolation I guess Type B would be required in this case?

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