What is the difference between shortcircuit current, rated current of cable & MCB with example? What will be the size of cable required for 5.5 KW motor (Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.

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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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HOW TO CALCULATE THE REGULATION OF 100 AND 25 KVA TRANSFORMER

0 Answers   AITM,

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why do we prefer VCB over OCB? what are the advantages of Vaccum Ckt. Breaker over Oil Ckt. Breaker?

2 Answers  

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What is the difference between PLC and Embeded system

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why the electrolyte level in lead acid battery is maintained 2.5 cms above electrodes?

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how can i determine the KVA/MVA rating of transformer precisely?? is there any standard test?????

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How will change the frequency in distribution side?

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What is type of transformers?

3 Answers  

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what is the per unit cost of generation of electricity at thermal,hydro,desael,solar,gas power plant

1 Answers  

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why C.T secondary are rated 5A generally?

13 Answers   ABC, Bhel,

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what is the RMU and RMU system in sub-station(11kv,66kv.....)

2 Answers   Alstom, Torrent Power,

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