Answer / alok das

To grounding the neutral of a transformer becease this time
neutral is works as earthing. And the earthing safety they
transformer by any kinds of electrical falts. over load
current & lighting.

Answer / bhavesh patel

grounding of neutral is because of whenever there is fault in equipment, the excessive current flow through in it and it will ground through neutral wire

Answer / simon peter

In distribution transformer the secondary side is always in star connection i,.e a neutal piont is drawn. Neutal wire & the core of x-mer is connected to earthing bcs if there is enormous load variation the overall load will b on phase wires hense x-mer might blow off due to increase in the value of hysteresis & eddy losses........

length of 4 core cable 95mm from substation LV VFD panel to Motor at field approximately 150 meter. Motor stop and power has been isolated from LV MCC ( Substation )to disconnect Motor for services. After Motor completed service propose to reinstall and reconnect Motor Cable, found earth cable sparkling during touching at metal / motor body. Inspect by clamp meter found earth cable have current flow AC 1-2amps and all earth cable at MCC LV also have current flow as same value. why it is happen?

2 Answers  

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What are the various methods for effecive earthing in a factory in a rocky terrain, where soil resistivity is extraordinarily high? The usual method of 3 m deep earth pits is not serving the purpose.

4 Answers  

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In Which vector group power transformers are mostly manufactured?

1 Answers   MRF,

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What is relation bet kvar & microfarad

2 Answers  

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if you are in a software company,then why do you want to come in a core company like sail, ntpc(where lots of trouble like tension but you have a good life in a it company) ?

0 Answers   Sail,

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what is the use of Reactive power in power system?

3 Answers  

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HOW CIRCUIT BREAKER RATING CALCULATED?WHAT ARE THE PARAMETERS CONSIDERED?

5 Answers  

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what is difference between di electric and insulator?

2 Answers   Greenko,

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in ONAN type transformer winding temperature is lower than oil temperature at evening time but morning winding temp is higher than oil temp what is the reason?

2 Answers   Areva,

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Which is remain unchanged in transformer action?

6 Answers   NTPC,

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What are the different modes of plc processor?

1 Answers  

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in my observation NCT is used at Karnataka power transmission. why we are not used in andhra pradesh

1 Answers  

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