NG20

Generator protection relays

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

FUNCTIONS


STANDARD PROTECTIVE & CONTROL ELEMENTS

  • Phase overcurrent side H and side L - 50/51
  • Over frequency - 81O
  • Residual Overvoltage - 59N
  • Under frequency - 81U
  • VT Supervision - 74VT
  • Voltage restraint overcurrent - 51V
  • Overvoltage - 59
  • Under Voltage - 27
  • Breaker Failure - BF
  • CT Supervision - 74CT
  • Directional active overpower - 32P
  • Directional active underpower - 37P
  • Loss of Field - 40(M/G)
  • Low impedance restricted earth fault - 64REF
  • Maximum Residual Overcurrent - 50N/51N
  • Minimum Power Factor - 55
  • Negative sequence overcurrent Motor/Generator - 46M, 46G
  • Thermal Image Motor/Generator - 49MG
  • Trip Circuit Supervision - 74TCS

SW PACK OPTIONAL CONFIGURATION

  • Thermal with Pt100 Probes - 26

COMMUNICATION FUNCTIONS

  • One USB Type B local port for communication with ThyVisor setup software

DOWNLOADS

Flyer NG20
NG20 Coding
NG20 Manual

RELATED PRODUCTS

XMR-D

XMR-D is a part of XMORE platform, the complete range of IEDs for Medium Voltage application including feeder, motor, generator, transformer and capacitor bank; it is the multifunction and comprehensive Motor and Generator protection relay, including Differential element. Thanks to Hardware and Software modularity XMR-D is flexible and scalable in term of application and performance.


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XMR-P


XMR-P is a part of XMORE platform, the complete range of IEDs for Medium Voltage application including feeder, motor, generator, transformer and capacitor bank; it is the multifunction and comprehensive Feeder, Transformer, Motor and Generator protection which includes an accurate and complete measurement, including Energy and Power.

Thanks to Hardware and Software modularity XMR-P is flexible and scalable in term of application and performance as:

  • Feeder Protection (Standard SW configuration)
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The relay is compliant with CEI-016 requirements

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