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NPW800 / NPW800R - Digital power protection

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NPW800 / NPW800R - Digital power protection

Power Protection

NPW800 and NPW800R provide the measurement of apparent (S), active (P) and reactive (Q) powers of 3- or 4-wire electricity networks. The monitoring of the direction of energy flow is supplemented by management of the power factor, the tangent? and by the supervision of the network voltage and frequency. These measurements and monitoring make it possible to develop the protection functions associated with these values. 

These functions associated with an R type modular unit, thus allow the NPW800R to be used for quick replacement, by equivalence of function, of the CEE relays of the 7000 series (mechanical interchangeability).

Product family: 
Cable Arrival / Departure
ANSI code : 
ΣP-ΣQ - Maximum of integrated power activates and revives
27 - Undervoltage
32P - Maximum of active power
32Q - Maximum of reactive power
37P - Loss of load (pump unpriming) / Underpower
37Q - Underpower reactive relay
55 - Management of the network power factor
59 - Overvoltage
59N - Maximum of zero sequence voltage
74TC - Trip circuit supervision of the breaker
81 - Over and/or under frequency
86 - Latching of the output contacts
BF - Breaker failure
Q/P - Management of the network tangent φ

NPW800R

NP800 - NP800R RANGE


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