NPG800 & NPG800R – Generator Protection

Products family : Generator Protection

Sector : Generation, Industry

NPG800 & NPG800R protect generators connected to three phase network and driven by any type of prime mover: steam, hydraulic or gas turbine and also diesel or gas engine.
The various functions and connection possibilities are suitable for hundreds kVA to tens MVA generators.

NPG800R (R3 case) is dedicated to the refurbishment of CEE series 7000 relays.
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
21 – Distance relay
24 – Overfluxing
27 – Undervoltage
32P – Maximum of active power
32Q – Maximum of reactive power
32RP – Reverse active power
37P – Loss of load (pump unpriming) / Underpower
37Q – Underpower reactive relay
40 – Field failure
46 – Reversal, loss of phase or unbalance phase
49 – Thermal overload
50 – Instantaneous overcurrent
50V – Instantaneous overcurrent with voltage control
51 – Overcurrent
51V – Maximum overcurrent with voltage control
59 – Overvoltage
59N – Maximum of zero sequence voltage
64 – Sensitive earth fault
74TC – Trip circuit supervision of the breaker
81 – Over and/or under frequency
86 – Latching of the output contacts
BF – Breaker failure