Answer / guru

The Differential relay works on the principle of difference
of current in primary and secondary circuits of a busbar or
transformer etc.,

Generally the PS Class cores of the CT is used in operating
the differential relay

Answer / reza

bus bar diffrantial simoling matlab

1. name the relay for protecting transformer 2. Current Transformer 3. potential Transformer

1 Answers  

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why dc is not given to transformer

4 Answers  

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why it is so called as xlpe(cross linked poly ethyline) cable?

0 Answers  

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how does a liquid starter reduce the starting currents?

0 Answers  

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What are the rating wise protections required for Generators from 600KVA to 2000KVA

3 Answers  

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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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In separetly excited m/c,we excite the field by a dc source,what not with ac source?

2 Answers  

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what is cascade speed control device?and how this device control the speed of motors?

0 Answers   ABB,

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What will happen 50 HZ motor when you will give 60 HZ?

7 Answers   Bhushan Power Steel,

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A 4-Pole D.C. Generator has a speed of 1500r.p.m. Then what will be the frequency of D.C. Generator ?

9 Answers   IBM,

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Why consumers are charged based on Kwh basis why not on Kvah basis.

4 Answers   Unitech,

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different types of electrical cable?

1 Answers   Green Power,

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