NV021

Grid interconnection protection

The relay type NV021 can be typically used in LV distribution systems, on transformers or for electrical machines.
It can be used for system decoupling, load shedding and loss of main (islanding) protection.
The relay complies with CEI 0-21 requirements.

FUNCTIONS


STANDARD PROTECTIVE & CONTROL ELEMENTS

  • Under Voltage - 27
  • Positive Sequence Undervoltage - 27V1
  • Overvoltage - 59
  • Residual Overvoltage - 59N
  • Over frequency - 81O
  • Under frequency - 81U
  • Frequency rate Change - 81R
  • Breaker Failure - BF
  • Trip Circuit Supervision - 74TCS
  • Negative sequence overvoltage - 59V2

SW PACK OPTIONAL CONFIGURATION

  • Thermal with Pt100 Probes - 26

COMMUNICATION FUNCTIONS

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

DOWNLOADS

NV021 Coding
Flyer NV021
PRO-N NV021 IEC 61850 Certificate
NV021 Manual

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