Answer Posted / satya narayan dutta

no power specification is limited for double earthing.Doube
earthing is required all medium and high voltage
installation.

why do you add the load short circuit impedance when considering short circuit amperage. It seems that you should only consider supply. If you need to consider loads and you don't know what loads are to be added , what would be a good sub-transient reactance rating for the loads?

1746

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In EHV transmission line a neutral grounding reactor is often placed at neutral point of shunt reactors. What is the recommended protection for this neutral grounding reactor? Should I use a fast closing switch to bypass neutral grounding reactor when this protection operates?

3179

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Leakage current,un balance current which relay using for high voltage transmission?

2103

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What is icu and ics in Acb and how many time icu or ics passes from breaker?

1492

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hello! sir i did three year of diploma in electrical (2007- 2010) and now i m a student of electrical engineering. sir can i apply for germany visa for study and part tome work over there?

1796

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Define gain margin?

1123

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What does the term “voltage regulation” means?

1030

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how can we select the appropriate VCB ?

2228

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why US countries maintains 110v and 60HZ

2124

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Is there any problem about which the drive (inverter) doesn't show/display the alarm and/or fault but instead of this , it doesn't work ? I want to know that could there be any kind of problem in the drive when the drive doesn't display the alarm and/or fault ?

1905

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how choose conductor&depending upon load

1829

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role of europe union in UK safety legistlation (electrical safety)

1714

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How will change the frequency in distribution side?

1739

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How to Prepare preventive maintenance shedule of machine tool.

1955

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hello if any one have papers vof hpcl or sail, plz send me

1873

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