what is difference between 2 pole structure and 4 pole structure in transformer yard

0 Answers   Hospira,

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Dear sir, I have completed DECE in the year 1995. I have work experience in HT and LT LINE more than five years. Now i am doing BE in EEE from rajasthan university. After completion of BE,can i apply "C" Licence sir? Please reply.

0 Answers   Balavigna,

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Just a silly question but just to make my curious mind bac to normal - Why was not 67 and 67N relays built into a single relay as i have noticed that the R,Y,B CT wiring end up into the 67 relay while the common of the R,Y,B CT wiring end up into the 67N relay. Then it was better if a single relay was manufactured just like the distance relay (21). Another question i would like to ask is - how do we know where the 67 and 67 N relay has to be placed.why is it not placed at the transformer bay? In the substaion that i am working -i have noticed that it is placed between a breaker and a common double bus bar and this line bay is connected to another substation at a remote place which is furthur connected to a load. B U S______CT for 67 & 67N ______Breaker _____ remot s/s. B A R

1 Answers  

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what is pmg and its use

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what is formula for calculate thermal overload in new numiricalrelay( not in bimetal relay)?

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How much sq,mm cable need for 800 amps load

2 Answers  

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what is AVP?

2 Answers  

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What is Grounding? any difference b\w earthing? if yes plz explan??

3 Answers   ABB,

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what's prime importance of protection in electrical system.if protection system don't work properly what can happen in electrical system?

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what is the reactive power what is the use of it in system

0 Answers   L&T,

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Star & delta kis principale pa hai.

3 Answers   ME,

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in domestic service connection,what is service main?

1 Answers  

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