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Application
The relay type NA40 can be typically used in
MV and LV networks:
- on ring and parallel feeders in solidly
grounded, ungrounded, Petersen coil and/or
resistance grounded systems,
- on the LV side of parallel connected
transformers,
- on parallel connected generators on the same
busbar .
Protective
functions
59N - Residual overvoltage
67 - Directional overcurrent
67N - Directional ground fault
BF - Circuit breaker failure |
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