NPW800

Wattmetric protection

Performs the measurement of the apparent (S), active (P) and reactive (Q) power of 3 or 4 wire electrical networks.

Monitoring of the direction of energy flow is complemented by the management of the power factor, the tangent φ, and the supervision of the network voltage and frequency.

#Power, #Protection, #Relay

Wattmetric 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	Active power — Active power (P) monitoring Apparent power — Apparent power (S) monitoring Currents — Phase currents (IL1, IL2, IL3) Frequency — Frequency monitoring Power factor — Power factor monitoring – cos(φ) Reactive power — Reactive power (Q) monitoring Voltages — Phase voltages
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
Current inputs	3
Voltage outputs	3
Disturbance records	4
Digital inputs	8
Digital outputs	7
Watchdog output	1
Indication LEDs	5
Number of optional modules	1