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NPUH800R - Digital Protection of homopolar voltage

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NPUH800R - Digital Protection of homopolar voltage

Voltage/Frequency Protection

NPUH800R ensures the monitoring of the homopolar voltage of 3-phase networks with an isolated or highly resistive neutral. This multifunction relay monitors phase and earth faults, and also the proper functioning of the circuit breaker and its triggering circuit.

These functions associated with an R type modular unit, thus allow the NPUH800R to be used for quick replacement, by equivalence of function, of the relays in the relay CEE of the series 700 and 7000 (mechanical interchangeability.

Product family: 
Renovation of 700 & 7000 Series Relays
ANSI code : 
59N - Maximum of zero sequence voltage
74TC - Trip circuit supervision of the breaker
86 - Latching of the output contacts


NP800 - NP800R RANGE


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