Answer / waseem aslam

Control circuit wiring of substation refers to wiring of protection relays of transformer with the circuit breaker and wiring of over-current/earth-fault protection relay in the CB, including manual tripping operation.

Answer / k.prakashchandra

The control circuit is for opening and closing on command.

why transformer rating is always in KVA

7 Answers   GNG, NTPC,

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what is the principle of vvvf drive motor

3 Answers  

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What should be the value of earth resistance for an instrumentation/electronic circuit? As per which IS/IEC Code?

3 Answers   IOCL,

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which VFD is better ( LT or HT)

0 Answers  

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Why capacitor is blow when I am starting motor ?

1 Answers  

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How convergengr of nr method is not dependent on selection of slack bus and how gauss siedel method depends?

0 Answers  

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How short circuit MVA(Fault MVA) in a power system calculated for calculating number of earth plates ?

0 Answers   NA,

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IF we have 500kva transformer & know the current on HT & LT side, how can we consider for its breaker?

5 Answers  

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What we mean by vintage of an engine+Generator?

0 Answers  

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WHY AIR COMPRESOR IS STARTED UNLOADED

3 Answers  

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Shall we get electrical shock if we touch the positive terminal of a 230 volt dc supply?

22 Answers   Essar,

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please tell me formula of 3 phase induction motor under condition{1]when we 3 phase motor starts without load in star or delta connection?thanks

1 Answers  

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