NG20

Generator protection

Several functions, required for synchronous generators and not self-started synchronous motors are included.


FUNCTIONS


STANDARD PROTECTIVE & CONTROL ELEMENTS

  • Under Voltage - 27
  • Directional active underpower - 37P
  • Loss of Field - 40
  • Negative sequence overcurrent Motor/Generator - 46MG
  • Thermal Image Motor/Generator - 49MG
  • Phase overcurrent side H and side L - 50/51
  • Maximum Residual Overcurrent - 50N/51N(1)
  • Minimum Power Factor - 55
  • Overvoltage - 59
  • Residual Overvoltage - 59N
  • Overfrequency - 81O
  • Underfrequency - 81U
  • Breaker Failure - BF
  • CT Supervision - 74CT
  • VT Supervision - 74VT
  • Trip Circuit Supervision - 74TCS
  • Voltage-controlled / restraint overcurrent - 51V
  • Locked Rotor - 51LR(48)/14
  • Sequence of event Recorder (SER)
  • Sequence of Fault Recorder (SFR)

SW PACK OPTIONAL CONFIGURATION

  • Digital Fault Recorder (DFR)
HW PACK OPTIONAL CONFIGURATION
  • Thermal with Pt100 Probes - 26

COMMUNICATION FUNCTIONS

  • Modbus TCP-IP
  • One USB Type B local port for communication with ThyVisor setup software
  • Modbus protocol RTU RS485 / IEC 870-5-103 / DNP3

DOWNLOADS

Flyer NG20
NG20 Coding
NG20 Manual

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