I have 480V Single phase and I am trying to figure how big of a transformer (KVA's) and Primary breaker size I need to provide 200 Amps at 240V for a building.

1 Answers   Wipro,

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What Normal(Tangent) towers and Tension(Cut-point) Towers?

1 Answers   ABB, BGR Energy, NTPC, Powermec,

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hi if anybody got model questions for cpcl Grade'A' electrical engineer position.send it to my mail please krishkumar22@gmail.com

0 Answers  

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WE are using a 63A MCCB(SIEMENS MAKE) for one of the feeder in LV substation panel.It is supplying to a lighting & power socket DB.Settings in the MCCB is Ir = 63 * 1 , Isd = 8 times of Ir , tsd = 0.5 sec( I2 t off). Sometimes this MCCB is tripping .But no trip in DB MCB. Can anybody tell me reason ? From where i can know about the MCCB settings?

5 Answers  

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which relay is used for both detection & correction?(there is only one relay)

2 Answers  

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Which Kind of machines(in terms of poles) give the smoothest DC

0 Answers  

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What is the difference between generator and alternator?

2 Answers  

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how will reduce the voltage. if 12volt/250ma transformer toreduce 6 volt

0 Answers  

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what is the prinsiple of dc motor and construction and working ,application of dc motor.

0 Answers  

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Which. Type of motor used in. Fan

10 Answers   Bajaj, HCL,

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If i have 200 test cases and we have to execute but we don't have time to execute all testcases.within 1 hour we have to execute that testcases and prepare the test report.so how i have to resolve this problem? is there is any technique in the testing.

3 Answers   Stag Computers,

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4-Why we measure the insulation resistance of main core and frame in spite of that must be connected with ground before energize the transformer?

3 Answers  

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