Solutions   for   Protecting   andManaging   the   Electrical   Network

NP   BC915

Bay control 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 NPBC915 bay control IED may be applied for various types of control applications. The NPBC915 comes with full current, voltage, power and energy measurement capability and may be equipped with additional I/O depending on application needs. Easy to use and powerful logic programming expands further the application range to more demanding control needs. Optional cards (I/O, communication...) can be inserted depending on application requirements. Large freely programmable HMI display provides quick visualization of the object, alarm and event status.
The NPBC915 communicates using various protocols including IEC 61850 substation communication standard.


  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
  Protection Functions
  • Breaker failure protection [50BF/52BF]
  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)
  • Fault locator [21FL]
  • Current and voltage harmonics (up to 31st)
  • Current THD
  • Frequency (f)
  • Power (P, Q, S, pf)
  • Energy (E+, E-, Eq+, Eq-)
  • Disturbance recorder (3.2 kHz)
  • Current transformer supervision (CTS)
  • Fuse failure (VTS)
  • Trip circuit supervision [74TC]
  • Controllable objects: 5
  • Synchrocheck [25]
  • Autorecloser [79]
  • 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 BC915 Leaflet EN A941 H
NP BC915 User Manual EN A971 B
NP BC915 Connection/Definition Diagram EN S42483 H
Optional Boards Connection/Definition Diagram EN S42506 D