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Intelligence-Embedded Devices... more than Protection Relays

 

 

 

 

 

 

 

 

 

 

 

Application
The differential current relay type NT30 is intended for the protection of three-winding power transformers.
No matching CTs are required.

Protective functions
87T - Dual slope percentage biased differential with second and fifth harmonic restraint
BF - Circuit breaker failure
 
   

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