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Residual current relays with harmonic protection

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article image Detects very small leakage.

NHP provides increased safety to the user with a Terasaki core balance residual current device enabling detection of very small earth leakage currents.

A high level of protection can now be offered whilst ensuring the principal of operation remains simple and reliable.

NHP's range of Terasaki Din-Safe-R relays is now available against the effects of harmonics resulting in nuisance tripping.

The new Terasaki RD earth leakage relays not only provide additional filtering for harmonics, but are also configured for two wires from the input transformer, an improvement on the four-wire systems therefore reducing additional cost in wiring and termination time.

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