how do you select the ct/pt rating in substation

1 Answers   Apollo, Shreem Electric Ltd, Tata Motors,

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why we do occ & scc test in transformer ?how we can do it ?

2 Answers  

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The initial current is very large at the time of starting for almost all DC motors. SO WE USE STARTER FOR A SAFE STARTING but at our homes we don’t see any starters in our coolers, motors.WHY DON’T WE NEED STARTERS FOR THESE APPLIANCES?

1 Answers  

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what is the diffrantial relay???????why we use it on the MDB

5 Answers  

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How we can calculate the Amps for the cable Ex:- For 1sqmm wire how many amps we can draw (calculation)

0 Answers   TATA,

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what is function of pump in DG?

6 Answers   HP,

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what r the tests on the 3 phase transformers can any one explain how to test using megger on transformers thx

2 Answers  

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415v 14kw so can u tell me how i can measure the cable size.then size of the earth also

1 Answers  

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what is the setting of locked rotor in HT motor ? (answer expecting in percentage)

0 Answers  

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what rectifiers is and what are the types of rectifiers?

0 Answers  

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in catridge heeter  watts =110, 260 v ,  i checked in multimeeter meeter shows 50 ohms but oms law r=v square /w  260*260=67600, and 67600/110=614.5 ohms  how to caluclate exact ohms in heetre s 

2 Answers  

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why we r used APFC Panel in industrial area.when P.F. low then wat will be the effect in our system?

10 Answers   ABB, Georgio Rocks, Piramal Healthcare, Zenith Engineering Corporation,

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