definition of transformer

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Three set (each phase contain 2 cable of 400 mmsq CU XLPE AWA) of single core cables are connected to 11 KV motor of 14 MW & the switch gear supplay is taken from 11kv feeder & this supplay taken from 275 KV substation. Problem is one pair cable(L3- 2 cable ) getting very hot & gland melted and damaged in switch gear side. the other two cable haven't any more hot(ambient temp only & L3 haveing 95- 100 Degree C. The same problem happened in 275 KV substation switch gear side also where the supply taken for 11 kv switch gear. But here L2 phese cable had problem. Why it is happening like this?. The cable having temperature different at different location from gland side inthe case of 11KV feeder of 275 kv substation. why ?

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wht is the difference between volatge and wattage ? how can it be converted ? (like 15w = 6v ) like tht... ? actually what tht means ?

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how ct burden,magnetising current,ratio and knee point voltage are related & derived

0 Answers   Dalkia, SCT,

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how we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you

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What is circuit breaker failure protection?

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how is find out kwh step by step

0 Answers   Voith,

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what is meant by Is limiter?what is the use of current limiters in electrical ditribution network?

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Draw the single line diagram of the power station?

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what is the importance of creepage distance in disc insulators

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why occ characteristics of generator is also called as magnatization characteristics

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plz tell me about for how many rating (for 500kva)how much current taken?

13 Answers  

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