Answer / rk

it completly depend on weight of the transformer to be
nstalled like 25,100,63KVA transformer can be installed on
any metal structure due to mtheir lower wt.

Answer / vishok

It may be for the reason of safety.

Is 3C x 2.5 Sqmm Cable can withstand 40Amp Starting current? If Yes then specify your ans.

2 Answers   NTPC,

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In our domestic single phase line if you don't have a ground connection (earthing)how will you separately use earth in a specific power supply board.

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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in delta connection, why motor rotate in high speed compared to star connection?

2 Answers  

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why we measure ouput of transformers in kva.

1 Answers  

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What does bode plots shows?

0 Answers  

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How to select a contactor? How many types of contactors are available

0 Answers   TCS,

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WHTA IS LIMT OF LEAKGE CURRENT OF 11 KV 1 CORE 1000SQ.MM. XLPE CABLE.LOAD ON CABLE IS AROUND 600AMP .LENGTH 500 MTRS.

0 Answers   L&T,

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does the Trivector Meter of three phase automatically takes care of the low power factor and gives the reading accordigly or it does not take care of the Power factor while giving the readings please explain

0 Answers  

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how to know the diffrential relay setting of 06mva step- down (delta-star)transformer?

0 Answers   IPCL,

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what happen if the supply is given to the stator of the 3phase induction motor with out assembling the rotor ?

0 Answers  

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What is the difference between single core 2 wire and single core 3 wire system? Which application we are using this? and for What purpose we are using this?

0 Answers  

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