NPM800 & NPM800R / NPM800RE – Motor Protection

Products family : Motor Protection

Sector : Industry

NPM800 & NPM800R / NPM800RE protect MV and high power LV motors. These numerical and multi-function relays analyze the currents absorbed by the motor during the starting, reacceleration and normal operation phases.

NPM800R (R2 case) and NPM800RE (R3 case) are dedicated to the refurbishment of 7000 series (R2 and R3 cases) of CEE.
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
5 – Thermal start authorization
37 – Undercurrent or underpower device
46 – Reversal, loss of phase or unbalance phase
48 – Too long start
49 – Thermal overload
50 – Instantaneous overcurrent
50BF – Breaker failure with overcurrent
51LR – Locked rotor
51N – Earth fault overcurrent
66 – Limitation of number of starts
74TC – Trip circuit supervision of the breaker
86 – Latching of the output contacts