NPID800 / NPIDR800 & NPID800R – Phase and Earth Directional and Overcurrent Relay

Products family : Feeder Protection, Current Protection

Sector : Industry, Railway

NPID800 / NPIDR800 & NPID800R provide phase and earth fault overcurrent relays, with or without directional criteria, providing the detection of all type of short-circuits of medium and high voltage electrical networks. These numerical and multi-function relays supervise in particular phase to phase or phase to earth faults, negative sequence currents, thermal state of the protected device, and the good operation of the circuit breaker and its trip circuit.

NPID800R (R3 case) is dedicated to the refurbishment of 700 and 7000 series (R2 or 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
46 – Reversal, loss of phase or unbalance phase
46BC – Broken conductor detection
49 – Thermal overload
50 – Instantaneous overcurrent
50BF – Breaker failure with overcurrent
50N – Instantaneous earth fault overcurrent
50NBF – Breaker failure with earth fault overcurrent
51 – Overcurrent
51N – Earth fault overcurrent
67 – Phase directional overcurrent
67N – Earth directional overcurrent
74TC – Trip circuit supervision of the breaker
79 – Recloser
86 – Latching of the output contacts
Logical selectivity