NPF915

Feeder protection

NP900 Series - Advanced protection

Designed to protect and monitor three-phase electrical networks against all types of short-circuits, between phases and between phase and earth. Optional cards (I/O, communication…) are available for more comprehensive monitoring and control applications.

The NPF915 communicates using various protocols, including the IEC 61850 substation communication standard.

#Feeder, #Protection, #Relay

Double busbar control

Directional and voltage protection

Cable end differential protection

Low-impedance REF protection

Harmonics protection and control

5-shot scheme controlled autorecloser

Energy and Power measurement accuracy better than Class 0.5 S

Communication interfaces	Double Ethernet RJ45 - 100Mbits/s HSR/PRP Double LC fibre Ethernet 100Mbits/s HSR/PRP Double RJ45 Ethernet 100Mbits/s Double ST fibre Ethernet 100Mbits/s RS232 RS485 Serial Optical fibre PP/PG/GP/GG
Communication protocols	DNP 3.0 DNP 3.0 over TCP/IP HSR / PRP IEC 60870-5-101 IEC 60870-5-103 IEC 60870-5-104 IEC 61850 ed1 IEC 61850-8-1 Goose IEC 61850-8-1 MMS Modbus I/O Modbus RTU Modbus TCP/IP SPA - Serial communication
Mesures and operations	Active energy — Active energy index (Ea+, Ea-) Active power — Active power (P) monitoring Apparent power — Apparent power (S) monitoring Busbar voltage — Busbar voltage monitoring Currents — Phase currents (IL1, IL2, IL3) Frequency — Frequency monitoring Harmonics — Up to rank 31 Perturbography — 400 Hz to 3,2 kHz (8 to 64 samples per period) Power factor — Power factor monitoring – cos(φ) Reactive energy — Reactive energy index (Eq+, Eq-) Reactive power — Reactive power (Q) monitoring Voltages — Phase voltages Zero-sequence current — Zero-sequence current, high sensitive input Zero-sequence voltage — zero-sequence voltage
Power supply	19 to 70 Vdc 80 to 265 Vac (50/60 Hz)
Type of option cards	2 x RJ45 100Mb Ethernet & IRIG-B card 2 x RJ45 100MB Ethernet (HSR, PRP) 2 x ST type 100Mb Ethernet & IRIG-B card 4 x outputs 0..24 mA - 1 x input 0..4000 mA card 5x digital output card 8 x RTD input card 8x digital input card Optical fibre LC type 100MB for HSR, PRP RS 232 - Serial fibre Plastic-Plastic type RS 232 Serial fibre - Glass-Glass card RS 232 Serial fibre - Glass-Plastic card RS 232 Serial fibre - Plastic-Glass card
Current inputs	3
Sensitive current inputs	2
Voltage outputs	3
Disturbance records	100
Event logs	10000
Digital inputs	3
Digital outputs	5
Watchdog output	1
Indication LEDs	20
Number of optional modules	3