NPU800

Voltage protection

Monitors phase voltage and/or frequency in electrical networks.

Our NPU800 detects faults between phases or between phase and earth, as well as direct, reverse, and residual voltages (depending on wiring). It also ensures proper functioning of the circuit breaker and its tripping circuit.

#Protection, #Relay, #Voltmetric

Voltage multifonction protection

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	Frequency — Frequency monitoring Voltages — Phase voltages 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
Voltage outputs	3
Digital inputs	4
Digital outputs	3
Watchdog output	1
Indication LEDs	5
Number of optional modules	1