what is meant by unity power factor?unity means one why dont call 2,3,4......?

6 Answers  

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(1)For 3 No 1500 KVA transformer require on one single bus bar or need to be section through bus coupler means upto 3MVA.(2) 22KV Net work system as ring, How maney I/C required or 0ne I/C and one O/G.(3) What should be rating of VCB for 22 KV line.(4)Electrical/mechanical inter lock, why we need.

0 Answers  

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What is the % number of various buses in a typical power system?

2 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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what is wave traps and why it is been used in switchyards?

1 Answers   NHPC,

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why ht motors are connected in star?

1 Answers  

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The unit of current is the:(a) Volt(b) Coulomb(c) Joule(d) Ampere

2 Answers  

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tell me the operation of ELCB. How it detects a fault?

4 Answers  

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What is PIR (pre inserting resistance) in 400kv EHV SF6 BREAKER? Why it use?

1 Answers   Adani,

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why magnetising curve not start with zero voltage?

0 Answers   TATA,

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How instantanious short circuit current is calculated? its formula?

1 Answers  

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what is the pressure in side transformer under normal condition?

1 Answers  

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