watt meter have 4 terminals what there name??? and what theses 4 terminals indicates ?? and why 2 terminals are short circuited??

1 Answers  

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This is reqd for a 1MW Solar power plant..We have 2DC outputs from the solar panels Connected to 2INVERTOR panels.. Output from invertor is 3ph,280v,500kva,50hz.These are connected to individual ACB.This has to be stepped up to 11KV ,1250KVA SYSTEM.Now can I use (1) one more ACBTO GIVE A COMBINED OUTPUT OF 1000KVA,280V & STEP UP THE OUTPUT BY USING a single two winding 3 ph transformer 11kv/1250kva. or (2)use the two outputs and connect to one three winding transformer of above rating..Pls suggestwith details.

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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

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Can we get the shock if Power system is unearth means delta type take an rated voltage as 6.6 KV?

9 Answers   Reliance,

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Re: can you give main difference between ELCB 2pole And RCCB 2pole? And how this devices operated?

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What are the difference between off-load tap changer and on-load tap changer in transformer?

2 Answers   HCL,

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Why can not you store AC power in battery like DC power?

1 Answers   NTPC,

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Why generating voltage is limited up to 22kV?

4 Answers  

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what is the difference between ac ground and dc ground.. In my project iam using both ac and dc supply.. can both the grounds or the return paths be connected??

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what is volt drop formula?stm

1 Answers  

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In view of Electrical Engg. What is the use of SCR(Silicon control rectifier)

2 Answers  

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why the neutral point in connnection oscillates?

0 Answers   Avalon,

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