Answer / pradhyumn

relays are devices that detects the fault and initiates the
operation of the circuit breaker to isolate the defective
elment from the rest of the system.(V.K. Mehta)

Answer / syed

it need relay otherwise it will not work at all

Answer / avd

It depends on circuit breaker. If sensing eliment is
installed inside the CB or outside the CB. Like MCCB with
maganetic trip latch will operate. Same way MCB will also
operate as it has short ckt and O/L sensing eliment. But
large circuit breakers have relays outside.

Answer / deepak yadav

yes, relay is used in circuit breaker for automatic opration. without relay it is oprated manually

what is difference between elr and R eartl realy.

0 Answers  

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1 no. 22 kV feeder is taken from state electricity board. 350 MVA is the S.C. MVA. now i am feeding this feeder to HT Panel having 2 outgoings which further supply to 2 Transformers. Can you please suggest me the type & rating of cables are 3 of these cables same? or they are different? please help...............

2 Answers   TCE,

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how we can check that any motor is faulty may be single phase or three phase?

2 Answers   MAHINDRA,

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how much current in live 11 Kv distribution Line?

1 Answers   ABB,

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Why the transformer rating is denoted in VA rating why not in KW

7 Answers  

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is 60hz freq better than 50 hz?&why?

1 Answers  

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Can we use shunt trip coil instead of trip coil with protection relay for protection?

0 Answers  

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what is real time system type definition

1 Answers  

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When PRV operated at power transformer ,can anybody tell me particular pressure for 50mva transformer plzzz.

1 Answers   BWSSB,

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what is 11kv cable

1 Answers   bscpl,

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sir vizag steel ka junior trainee ka paper kitne number ka ayega

0 Answers   Vizag Steel,

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Difference between divercity and power factor

1 Answers  

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