Answer Posted / dhara. s

Marshelling box is generally erected at switch yard near the trafo & RTCC is erected at control room. MB is to marshell control cables from control & relay panel also from RTCC to OLTC & other supervision & cooling control system connected to transformer tank. RTCC panel is to operate tap & to supervise transformer heating & cooling conditions.

Why does the Solid state Rectifiers for 3-ph brake motors sometimes have 2 & sometimes 3 output terminals?

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What is the diffrence (Technical & Construction ) between CBCT & Normal CT?

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How to calculate the input cable rating for 10kva ups (3phase input and single phase output and also 3phase output, battery rating 65Ah)provide the formula also.thnx

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what is invertor supply and raw powersupply

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What is principle of Floroscent tube 36watt.

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Why is the frequency not changed during transformation of electrical energy in a transformer?

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in basic 2 phase will short means tripping the power but spot welding 2 phase shorting but not tripping it will welded why.....(Q)

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state types of reflectors in illumination engg. ???????

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i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value

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