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Application
The relay type NA70 can be typically used in radial MV and LV networks as feeder or power transformer protection when automatic reclosing is required.

Protective functions
49 - Thermal image
50/51 - Phase overcurrent
50N/51N - Residual overcurrent
59N - Residual overvoltage
67N - Directional ground fault
79 - Automatic recloser
bf - Circuit breaker failure

 

 

 

 
   

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