what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero

0 Answers   Jindal,

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what are the affects of loose connection in electrical circuit.

14 Answers   HP,

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Write down the name of 2 lady Bir Pratin of Bangladesh

0 Answers  

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If I want to buy a new Xformer for my plant what are the main parameter will I need to check?

0 Answers  

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An 11kv system consisting of an underground cable to a sub station about 300 meters away was shut down for about 10 hrs. On energising, it tripped off on earth fault about 10---20 mins later 6 times but since than it is not tripping.its already 3 weeks now. The SPAJ was found to be fine. what could be the cause.No test had been done to determine the cause of the trippings till now because of demand.

2 Answers  

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what happens when a power transformer neutral earthing broken???

11 Answers   MacLellan,

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What is the different between feeder & bus?

3 Answers   IOCL,

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the parts of transformers ?

1 Answers   Bhel, Facility management,

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What is dc current source? Differentiate between ideal and non ideal current sources?

0 Answers  

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1.What is the difference between isolators and circuitbreakers? 2.What is bus-bar?

1 Answers  

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how many types of ct retio

3 Answers  

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Do inductive loads have distorted current waveforms ?

0 Answers  

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