how to calculate micom relay earth falt time and current sertting

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What are the methods/types of distance protection schemes used in transmission system?

2 Answers  

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i want to make an elec generater with only 12v car battery car alternater and 12 volt motor ..... will the battery charge and give power at same time with out over charging the battery?

1 Answers  

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what is the difference between control transformer and Potential transformer (PT)?

1 Answers  

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there are cam operated switches - why we call cam operated , What is cam ?

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if we convert Ampers into kva,which one formula use by us,pls tell me?

10 Answers   ABB,

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i have dry type transformers can you help me that how many tests i can do to know the performence of transformer and also please tell me about the BDV test and Insulation resistance test in oil cooled transformers

4 Answers   Hyundai,

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salam&hi, i need to know about how can i calculate an enough current for the new building before i submit it to the suppliers

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what is meant by 3rd hormonics ?

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Our Slip Ring Induction Motor Frequently tripped By Earth Fault While Starting time and in Normal Operation Time also Kindly Let me Know the Reason. Application Ball Mill - Cement Mill

1 Answers  

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why in India it is maintained for exactly 50HZ frequency, why it is not that 49Hz,why it is so?

2 Answers  

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campared to ac, in dc corona loss is

4 Answers   DRDO,

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