Solutions   for   Protecting   andManaging   the   Electrical   Network

NP   P915

Power Monitoring IED with IEC 61850 protocol

The optimal management of electrical power systems is based in particular on the reliability, availability and communication skills of protection, measurement and automation devices.
The NPP915 is a power monitoring IED for any demanding metering and power monitoring applications. The NPP915 offers a unique combination of high accuracy power and energy measurement of class 0.2S with dynamic measurement range up to 250A secondary current. Freely configurable data logging, programmable logic and disturbance recorder features allows for variety of power quality monitoring applications.
The NPP915 communicates using various protocols including IEC 61850 substation communication standard.

  • Accuracy class 0.2 according to IEC 62053-22
  • Frequency independent measurement - patented frequency tracking algorithm guarantees measurement accuracy at 6-75Hz
  • Power quality analysis, harmonics, THD and disturbance recording
  • Powerful disturbance recorder with up to 64 samples per cycle sampling rate
  • Dynamic measuring range up to 250A secondary – effective disturbance recording when coupled to protection CT
  • Programmable logic functions
  • Extensive data logging capability


  Hardware (standard)
  • Large graphic display with customizable mimic
  • Push buttons for local control of the up to 5 objects
  • 16 freely configurable leds
  • 5 current inputs
  • 4 voltage inputs
  • 5+1 output units (standard)
  • 3 digital inputs (standard)
  • 1 Front Ethernet port, 1 rear Ethernet port, 1 rear RS485 port
  Disturbance and Event recording
  • Up to 100 recordings @ 64 samples/cycle (3.2 kHz)
  • Recording lenght configurable from 0.1 to 1800 seconds
  • Pre trigger configurable from 5 to 95%
  • Non-volatile event records: 15000
  Measurement and Supervision
  • Phase and residual currents (IL1, IL2, IL3, I01, I02)
  • Voltage measurements (UL1-UL3, U12-U31, U0, SS)
  • Current and voltage harmonics (up to 31st)
  • Current THD
  • Frequency (f)
  • Power (P, Q, S, pf)
  • Energy (E+, E-, Eq+, Eq-)
  • 8 setting groups
  Communication protocols standard
  • IEC 61850
  • IEC 60870-5-103/101/104
  • Modbus/RTU, Modbus TCP/IP
  • DNP 3.0, DNP 3.0 over TCP/IP
  • SPA
  Options (3 slots)
  • Digital inputs optional: +8 per card
  • Digital outputs optional: +5 per card (2 cards max.)
  • Arc protection (12 sensors +2xHSO +BI)
  • 2 x mA input + 6-8 x RTD input (2 cards max.)
  • Double LC Ethernet 100Mb
  • RS232 + serial fibre PP/PG/GP/GG (option)


  Device Doc. Type Language Ref. Ind.
NP P915 Leaflet EN A929 I
NP P915 User Manual EN A972 B
NP P915 Connection/Definition Diagram EN S42477 F
Optional Boards Connection/Definition Diagram EN S42506 D