Answer / ranjith

It detects the faults of winding in neutral grounding side

Answer / k.prakashchandra

REF is restricted earth fault relay, for internal earth fault of Tr . SBEF is standby earth fault relay or backup for both internal and outside earth faults . The CTs of both are connected to neutral of Tr. Discriminative setting is required

Answer / suresh

Ref is restricted earth fault, The relay was acted  for winding to winding shorted with ground.

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0 Answers  

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what is load cell? whrere its used ? how to measured?

2 Answers   Essar,

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What is signal flow graph?

0 Answers  

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WHAT MEANT BY SEVICE FOCTOR?

2 Answers  

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Explain principle of Soft-starter & how its working???

12 Answers   MAHINDRA,

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Which device is used for the source of emission of electrons in a crt?

0 Answers  

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Dear sir, iam completed iti ncvt electrician 2000-2002 & diploma electrical eng completed 2008-2010 distance education in rvd university, still i got B licences only but my working company want C licences, how to i get c licencese pls reply me iam in critical situation thank you karthick 9841637803

0 Answers  

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what is the constructional difference in generator if we want to genearate 6.6kv instead of 440v?

1 Answers   Anglo Eastern,

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How much Fault current can be contributed by a motor?

4 Answers  

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What kinds of decision are made about CT from it's Knee point(voltage & current)?

2 Answers  

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what will happen if frequency is below 50 hz?

0 Answers   Student,

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How to know about the rating(voltage and other) of induction motor if its name plate is missing at the manufacturing site.

0 Answers   ABB,

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