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NVA100X-T

NVA100X-T
The comprehensive solution for differential protection of Generator-Motor an two or three windings Transformer

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The NVA100X-T protective relay is suitable for differential protection of motors, generators, short lines and two or three windings power transformers.
The adjustment of amplitude and phase current differential protection can be achieved through internal compensation (sw) or through the use of external adapters.

NVA100X-T - ProN-ext ()

Specifications


Key:   standard standard optional optional alternative alternative


Applications

  • Generator
  • Motor
  • Transformer

Protection functions

  • Overflux (V/Hz) (24)
  • Pt100 thermometric probes (26)
  • Unipolar undervoltage (27.1)
  • Phase undercurrent (37)
  • Negative sequence overcurrent (46)
  • Thermal image for Motor / Generator (49MG)
  • Phase overcurrent (50/51)
  • Measured residual overcurrent (50N(1)/51N(1))
  • Measured residual overcurrent (50N(2)/51N(2))
  • Unipolar overvoltage (59.1)
  • Residual overvoltage (59N)
  • Low impedance restricted ground fault (64REF)
  • Underfrequency & overfrequency (81U 81O)
  • Biased differential for transformer (87T)
  • 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)
  • Logic selectivity
  • Multiple setting profiles
  • Second harmonic restraint
  • Self-test
  • Trip circuit supervision (74TCS)

Hardware

  • 100 V standard voltage inputs
  • 16 binary inputs + 8 output relays + 16 LEDs
  • 32 binary inputs + 16 output relays + 16 LEDs
  • Auxiliary power supply 110-230 Vac/dc
  • Auxiliary power supply 24-110 Vac/dc
  • Flush, projecting or rack mounting
  • Front Ethernet port for local interface
  • Nominal current 1/5 A selectable by DIP-switch
  • One TX (RJ45) port and one FX (Fibra ottica) port + RS485
  • One TX (RJ45) port + one FX (optical port) port + RS485
  • RS485 port
  • Standard CT amperometric inputs 1/5 A
  • Two FX (optical fiber) port + RS485
  • Two TX (RJ45) port + RS485

Communication

  • IEC 61850 Protocol
  • Modbus RTU RS232 protocol
  • Modbus RTU RS485
  • Modbus RTU RS485 / IEC 870-5-103
  • Modbus RTU RS485 / IEC 870-5-103 / DNP3 protocol
  • Modbus TCP/IP Protocol