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NVA100X-D

NVA100X-D
The comprehensive solution for differential protection of Generator-Motor-Transformer

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The relay can be typically used in radial or meshed MV and LV networks as differential protection of power generator/motor or transformer.
The phase and amplitude adaptation of the current for differential protection can be achieved can be done either either by internal compensation or through external adapters.

NVA100X-D - ProN-ext ()

Specifications


Key:   standard standard optional optional alternative alternative


Applications

  • Generator
  • Motor
  • Transformer

Protection functions

  • Underimpedance (21)
  • Pt100 thermometric probes (26)
  • Undervoltage (27)
  • Positive seq. undervoltage (27V1)
  • Directional active overpower (32P)
  • Phase undercurrent (37)
  • Directional active underpower (37P)
  • Loss of field (40)
  • Negative sequence overcurrent for Generator (46G)
  • Negative sequence overcurrent for Motor (46M)
  • Phase reversal (47)
  • Thermal image for Motor / Generator (49MG)
  • Phase overcurrent (50/51)
  • Measured residual overcurrent (50N(1)/51N(1))
  • Measured residual overcurrent (50N(2)/51N(2))
  • Calculated residual overcurrent (50N(Calc)/51N(Calc))
  • Locked rotor (51LR(48)/14)
  • Voltage-controlled overcurrent (51V)
  • Minimum power factor (55)
  • Overvoltage (59)
  • Residual overvoltage (59N)
  • Negative seq. overvoltage (59V2)
  • Low impedance restricted ground fault (64REF)
  • Ground directional overcurrent (67N)
  • Underfrequency & overfrequency (81U 81O)
  • Differential protection for generators and motors (87G/87M)
  • High impedance restricted earth fault (87NHIZ)
  • Biased differential for transformer (87T)
  • Breaker failure (BF)

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
  • Programmable Logic Controller
  • Second harmonic restraint
  • Self-test
  • Trip circuit supervision (74TCS)
  • VTs monitoring (74VT)

Hardware

  • 100 V standard voltage inputs
  • 16 binary inputs + 8 output relays + 16 LEDs
  • 19-inch "4U" rack mounting
  • 400 V standard voltage inputs
  • Auxiliary power supply 110-230 Vac/dc
  • Auxiliary power supply 24-110 Vac/dc
  • Flush mounting
  • 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