how can i use REF and diffrencial relay both in 1 CT core for transformer protection?

0 Answers  

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circuit breaker is ...............connected with circuit

2 Answers   Rancho,

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What is different between hypo test and megger test

2 Answers   ABB,

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An 11kv system consisting of an underground cable to a sub station about 300 meters away was shut down for about 10 hrs. On energising, it tripped off on earth fault about 10---20 mins later 6 times but since than it is not tripping.its already 3 weeks now. The SPAJ was found to be fine. what could be the cause.No test had been done to determine the cause of the trippings till now because of demand.

2 Answers  

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what is the earth to neutral voltage(maximum and minimum) according to ieee standards

4 Answers  

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What is diversity factor and how to calculate it

2 Answers   Al Faraa, Amul, Pentagon, Sobha Developers,

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why ELCB can't work if N input of ELCB do not connect to ground?

5 Answers  

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What is the difference between a Vacuum Circuit Breaker and a Load Break Switch?

7 Answers  

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Why it need to form a capcitor when it not been in use from three or two year. Plz describe it technically.

0 Answers  

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how is control wiring coding is done in a CRP panel ?

0 Answers   Genus, Havells, Hindustan Power Projects,

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what is POTT and PUTT explain?

0 Answers  

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what is transformor oil gread

0 Answers   Idea,

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