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Application
The relay type NA60 can be typically used in radial or
meshed MV and LV networks as feeder or power
transformer protection:
- on radial, ring and parallel feeders of any length
in solidly grounded, ungrounded, Petersen coil and/or
resistance grounded systems,
- on parallel connected generators on the same busbar.
More over undervoltage and overvoltage functions are
provided as protections or voltage controls.
Protective
functions
27 - Undervoltage
49 - Thermal image
50/51 - Phase overcurrent
50N/51N - Residual overcurrent
59 - Overvoltage
59N - Residual overvoltage
67 - Directional overcurrent
67N - Directional ground fault
BF - Circuit breaker failure |
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