How to Decide the Location of Earth pit for Compressor in Oil Depo? and How to measure the resistance of earth pit Pls explain me with the help of Circuit Diagram?

0 Answers   Triune,

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Explain principle of Soft-starter & how its working???

12 Answers   MAHINDRA,

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What is rotating magnetic field?Discuss elaborately.

0 Answers  

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How much current flow in no load condition of a motor?

8 Answers  

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Genreally distribution transformers are having Star/delta connections to provide phase and neutral to the consumers. Is the neutral of the star conncted secondary grounded in these transformers?

1 Answers  

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One of our gas turbine generator unit "1st stage rotor ground fault" alarm was occured several times. we tried to measure some voltage vulue ground fault protection relay (UNS3020a made by ABB and we measured the value of: Ground: 0.9VDC 5V: 5.8VDC 24V: 23VDC u+: 300 – 350mVAC Rf1: 17.5mVAC Rf2: 17.6mVAC The unit still running and the alarm was reset. As of 6pm yesterday and unitl now no alarm happened again. I our protection relay was defective?

1 Answers  

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please send me the L&T Emb. sys. placement papers and entire details of pattren

0 Answers   HMM, L&T,

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what is the purpose of CT,PT

8 Answers  

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IF avr is voltage regulator of genset means why we are giving genset CT sense to AVR ?

3 Answers   ABB,

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Why only 1ph,2ph,3ph supplies are universally used?? Why not 4ph or 5ph??

4 Answers  

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How to decide DO set rating of Transformer?

0 Answers  

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when we supply in primary side of transformer then the supply goes in secondary side?how it works?

4 Answers  

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