I HAVE A INCOMING 100A MCCB TPN 25KA, CABLE LENGHT OF 80M 70MM CABLE SIZE FROM MAIN SUBBOARD TO NEW DB.BASE ON THE FAULT LEVEL SETTING OF 45KA.I WOULD LIKE TO FIND OUT 25KA ENOUGH KA. APPRECIATE IF SOMEBODY CAN ASSIST ME WITH FORMULA FOR THIS. FRM: JEFF

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In a voltage-controlled current source A A current booster is never used B The load is always floated C A stiff current source drives the load D The load current equals Isc

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i need 24v dc from 230v ac supply how we can getit ? what are the devices &its rating requied for that ? plzz i need answer urgently .thank u

3 Answers  

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What is the % number of various buses in a typical power system?

2 Answers  

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what is the contact resistance of sf6 circuit breaker??

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why the earth is taken minimum in supplying? wather it the proportional factor to getting work any equipment or a power plant?

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If I want to use capacitor banks at HT (11 KV) side for maintaining power factor then which type of capacitor should I use? Plz give me the specification?? (I am using 1250 Kva transformer (11 KV/433V)).

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What are the specifications for conducting earth leakage test as per IEC standard?

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WHAT IS THE DIFFERENCE BETWEEN A DC MACHINE OUTPUT AND RECTIFIER OUTPUT...

3 Answers   Cesco, NTPC, RRB,

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what is transformer?

4 Answers   Mphasis,

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Why sip ring used in ac motor also why its not used in dc motor?

2 Answers   RRB,

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what are factors to be consider in electrical installation like load factor,diversity factor .....

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