Neutral earthing resistor (NER)
IEC 60617 (single-line diagram symbols)
Drawn as
A rectangle (resistor) between a transformer or generator neutral point and an earth symbol.
Meaning
Limits earth-fault current on an MV system. Becomes neutral-earthing-resistor.
Variants
- ANSI resistors are drawn as a zig-zag
Tags
NER · R