NPIHD800

Directional residual overcurrent protection

Provides earth fault overcurrent protection for medium and high voltage electrical networks.

Our NPIH800 monitors phase to earth short-circuits and the good operating of the circuit breaker and its trip circuits

Zero-sequence directionnal overcurrent

Measurement and monitoring

Recording / event log

Disturbance recording

Local HMI

Communication interfaces	Double RS485 - Redundancy RJ45 Ethernet 10 Mbits/s RS485
Communication protocols	Modbus RTU Modbus TCP/IP
Mesures and operations	Currents — Phase currents (IL1, IL2, IL3) Voltages — Phase voltages Zero-sequence current — Zero-sequence current, high sensitive input Zero-sequence voltage — zero-sequence voltage
Power supply	19 to 70 Vdc 85 to 255 Vdc/Vac (50/60 Hz)
Type of option cards	1x 10 Mb Ethernet card 1x 2 wires RS385 serial card 2x RS 485 redundant mode card 4x DI - 4x DO card
Sensitive current inputs	1
Voltage outputs	4
Disturbance records	3
Digital inputs	4
Digital outputs	3
Watchdog output	1
Indication LEDs	5
Number of optional modules	2