what is the difference between earthed and unearthed cable?

24 Answers   Cords Cable, Essar, Torrent Power,

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why we use post insulators in no ofstacks at substation for supporting equipment ? why we not use single post insulator

3 Answers  

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what is the difference between relay and a contactor.

5 Answers   Siemens,

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why we use lamination or layer by layer cor used?

4 Answers  

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what is the maximum genarating in india?

17 Answers  

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Is it possible to get earth resistance value"zero" Ohm practically??? If yes,which type of earthing???

9 Answers   TATA,

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Difference between Profibus DP/PA?what does it stand for and how is it use in process?

1 Answers  

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Recently we had experienced following problem All RCCB breakers (connected to the load as well as spares) connected to various UPS systems at various floors at a high rise building tripped during a power break down and upon starting up of generator.This Generator is recently inducted into the installation. Can any one explain the reason behind this tripping. Regards Viswanathan

1 Answers  

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what is the relation between Sq mm of wire and its current carrying capacity?

5 Answers   Finolex,

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If a rotary UPS is in line through grid power; What would be the impact on Power Factor if the load through rotary ups is 25% , 50% , 75% & 100%. Will the power factor reduce with less load?

0 Answers  

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What are the conditions to be satisfied before connecting two DC generators in parallel?

9 Answers   Bhel, Godrej,

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What is Phase margin?

0 Answers  

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