what is the difference between inverter and ups & what is the earth resistance for ups , if its high why so

3 Answers  

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What is the purpose of stand by earth fault protection for transformer ?

0 Answers  

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why vector group is ued

2 Answers  

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During Testing of Maintenance Free Earthing, How deep should be the Spikes of Earth Test Meter should be inserted in the soil(one spike is 15 Meter & Other spike is 30 Mtrs away from the Main Earth Electrode. Because, recently, we observed that when spike is inserted 3-4 Inch in the earth- results are better, If spike is inserted 1 feet deep than results are increasing.

0 Answers  

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HOW TO IDENTIFY THE RELAYS WHICH APPLICATION IN WHICH RELAY USING

3 Answers  

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why we are using earth pit in sub stations.?

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What is the actual meaning between the energy conservation and energy saving ?

3 Answers  

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what is acceptance test in electrical engineering.

0 Answers   ABB,

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Why we get neutral from EB department, if not what will happen if we use earth instead of neutral? what is the result at the time of monsoon or rain with thunder and lighting ?

1 Answers  

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wt wil happen if a 120kv line is grounded

4 Answers  

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what is the generation action and motoring action?

3 Answers  

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what is battery impedance testing and how we perform this test with four wires.

1 Answers   Etimaad, MRF,

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