Answer / arun.r

IDd IS DIFF B/W TWO CURRENT
Ires IS MAX CURRENT OF THE TWO CURRENT

how is differential relay working in transformer.comparison with generator defferntial relay

1 Answers  

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1.what is surge 2.what is lightning 3.what is switching 4.difference between surge,lightning,switching used in power system 4.definition of surgearrestor,lightningarrestor 5.adv and disadv of surgearrestor,lightningarrestor 6.uses and purpose of surgearrestorand lightning arrestor 7.block dia of surge arrestor 8.blockdiagram of lightning arrestor 9.operation and working of surge arrestor and lightning arrestor 10.basic formula of surgearrestor and lightning arrestor 11.basic diagram of surge arrestor and lightning arrestor

1 Answers   Crompton Greaves, Framo, L&T,

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although ckt breakers have taken the place of old fuse. But instead of it , these older ones are still used in the industries and homes ? why .... what are their advantages and disadvantages ? which one is leading and winning the race and competition ?

0 Answers  

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why we use low kv lightining arrester in line for example 9 kv using in 11kv

1 Answers  

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what is the abbreviation & meaning of UI charges

1 Answers   MNC,

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What is auto transformer?

28 Answers   ABC, Transformers and Electricals, US Consulate,

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What do you mean by transformation ratio of instrument transformer?

0 Answers  

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what is the principle of operation of tungstun bulb ??

2 Answers   IOCL,

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sir can you operated Transformer on frequency from that for which is design?

1 Answers   Kirloskar,

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For a certain load i need 100kw load ,In that case what rating mccb should i use?

5 Answers  

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i have a 4 Mva transformer 34.5 kv / 480-277 v and i used 2 parallel 3200 amp bus duct for the secondary feeder using 3 ply of bus bar ( 3/8" x 5" ) as a common where the flexible link terminated and 6300 amps breaker for the main, the lower bus duct reaches 70 degrees and the upper bus duct reaches 55 degrees when i used thermal scanner. why the temperature is not balance when the load reaches 3600 amps.

0 Answers   SCM,

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what is meant by generator differencial protection?

1 Answers  

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