Neutral Earth

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Highly proven, our electronic relays are compact and cost effective. Used mainly in challenging environments, for example where intrinsic safety is required, they offer numerous standard features in either microprocessor or hardware based configurations.
Historically Mines department approvals have been obtained in Australia and South Africa.

NLM3
Neutral Earth Monitor

The M-Tronix / Bramco Neutral Link Monitor relay (nlm3) is an NER
integrity protection device designed to continuously monitor the current limitation system on the secondary star point to earth connection of a supply transformer.

NLM5
Neutral Earth Monitor

The M-Tronix / Bramco Neutral Link Monitor relay (NLM5) is a touch screen dual processor NER integrity protection device designed to continuously monitor the current limitation system on the secondary star point to earth connection of a supply transformer.

NLM5 Typical Wiring

NLM5 Typical Wiring

The m-Tronix Bramco Neutral Earth Monitor relay (nlm5) is a NER integrity protection device designed to continuously monitor the current limitation system on the secondary star point to earth connection of a supply transformer.

The nlm5 monitors the NER (Neutral earthing resistor), Resistance integrity, excess star point voltage rises, neutral earth leakage current, with the ability to adjust trip times for protection coordination.