Neutral Earthing Resistors (NERs)

Mostly are used on MV & LV distribution systems to limit the current flow between neutral and earth point of transformer or generator in the event of a phase to earth fault on the system.The NER limits the fault current to a value that should not cause any further damage to switchgear, generators or transformers beyond what has already been caused by the fault itself. IP ratings range IP00 (without enclosure) and up to IP56 (with enclosure). Enclosure materials include pre-galvanised,HDG mild steel and stainless steel grades 304/316L.

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