NVA100X-B … The comprehensive solution for Feeders and Transformer

The relay type NVA100X-B can be typically used in radial or meshed MV and LV networks as feeder or power transformer protection:
  • On radial, ring and parallel feeders of any length in solidly grounded, ungrounded, Petersen coil and/or resistance grounded systems.
  • On parallel connected generators and transformer on the same Busbar.
  • In HV, MV and LV electrical machines and network, load shedding and separation of active users from the grid.
NVA100X-B - ProN-ext ()

Specifications

Key:   standard standard optional optional alternative alternative

Applications

  • Feeder
  • Transformer

Protection functions

  • Pt100 thermometric probes (26)
  • Phase undercurrent (37)
  • Negative sequence overcurrent for Line / Transformer (46LT)
  • Thermal image for Line / Transformer (49LT)
  • Phase overcurrent (50/51)
  • Measured residual overcurrent (50N(1)/51N(1))
  • Calculated residual overcurrent (50N(Calc)/51N(Calc))
  • Residual overcurrent (50N/51N)
  • Phase directional overcurrent (67)
  • Ground directional overcurrent (67N)
  • Automatic reclosing (79)
  • High impedance restricted earth fault (87NHIZ)
  • Breaker failure (BF)
  • Phase interruption under low-load condition (I2/I1)

Monitoring and control functions

  • CB diagnostic
  • Cold Load Pickup (CLP)
  • CTs monitoring (74CT)
  • Digital Fault recording (DFR)
  • Fault and event logging (SER & SFR)
  • Fault Locator (FL)
  • Logic selectivity
  • Multiple setting profiles
  • Programmable Logic Controller
  • Second harmonic restraint
  • Self-test
  • Trip circuit supervision (74TCS)
  • VTs monitoring (74VT)

Hardware

  • 100 V standard voltage inputs
  • 16 binary inputs + 16 output relays + 16 LEDs + IRIG-B
  • 16 binary inputs + 16 output relays + 24 LEDs + 8 Pt100
  • 16 binary inputs + 8 output relays + 16 LEDs
  • 19/2-inch “4U” rack mounting
  • 32 binary inputs + 16 output relays + 16 LEDs
  • 400 V standard voltage inputs
  • Auxiliary power supply 110-230 Vac/dc
  • Auxiliary power supply 24-48 Vac/dc
  • Flush mounting
  • Front Ethernet port for local interface
  • Nominal current 1/5 A selectable by DIP-switch
  • One TX (RJ45) port + one FX (optical port) port + RS485
  • Standard CT amperometric inputs 1/5 A
  • Two FX (optical fiber) port + RS485
  • Two TX (RJ45) port + RS485

Communication

  • IEC 61850 Protocol
  • Modbus RTU RS485
  • Modbus RTU RS485 / IEC 870-5-103
  • Modbus RTU RS485 / IEC 870-5-103 / DNP3 protocol
  • Modbus TCP/IP Protocol
  • Modbus TCP/IP protocol for local interface
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