NPW800 & NPW800R – Power and Voltage Relay

Products family : Power Protection

Sector : Industry

NPW800 & NPW800R perform the measurement of the apparent (S), active (P) and reactive (Q) power of 3 or 4 wire electrical networks. The monitoring of the energy flow direction is completed by the management of power factor, tangent φ and by the supervision of network voltage and frequency.

NPW800R (R3 case) is dedicated to the refurbishment of CEE WTG 7000 relays (R3 case).
Two mountings are available, Flush Rear Connection (EDPAR) or Projecting Rear Connection (SDPAR).

As well as the usual protection functions, NP800 relays provide monitoring, measurement and recording of the electrical quantities of the network.

Setting, reading, measurement and recording are all available locally or remotely.

ANSI codes
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