we have 3*1 MW generator one NGR is common for all it will be selected during paralle our problem is two generator ca be paralled but when slecting third one we need to close NGR selection on third one other wise voltage not matching why?

1 Answers  

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whata is battery charger ?how many cells connected for 110v?

1 Answers   Essar,

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what is mean by hormonics & surge? and it's effects?

1 Answers   TCS,

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Why control of DC motor is simpler?

0 Answers   BARC,

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How can two 3 phase transformers of same KVA and Voltage be connected in parallel?

0 Answers   Bernhard Schulte Shipmanagement,

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what happened if power factor is "1"

9 Answers   Reliance,

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Does RCCB do the job of MCB? Lets take 16A RCCB. it trips when residual current exceeds 30mA. does it trip in an over current situation, i.e when current exceeds 16A ??

2 Answers  

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which relay is used on long transmission lines

10 Answers   ABB, Bhel, Student, Tata Steel Limited,

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what is 3rd Harmonics? how it is generated in alternator

2 Answers   Aditya Birla,

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I have a 1000 kVA Transformer(11kV/0.415kV) and a APFC panel of 400 kVAR(LT).Now if i want to remove the LT APFC panel and install a HT(11kV) APFC panel on the HT side is the HT APFC panel will work same as the LT APFC panel(improve the power factor),if yes what will be rating of the HT APFC panel?what is the formula to calculate HT APFC panel rating???

2 Answers  

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how can i use REF and diffrencial relay both in 1 CT core for transformer protection?

0 Answers  

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How to checked frequency drive output voltages?

0 Answers  

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