WE HAVE A PROBLEM THAT THE MAIN DRIVE OF OUR CEMENT MILL HAS AN EARTHING PROBLEM?TWO OF STATOR WINDINGS INSULATION HAS BEEN COLLAPSED DUE TO AGING PROBLEM.THE PHASES HAVE BEEN BYPASSED AND NOW THE LOAD HAS BEEN INCREASED.WE CAN'T REPLACE THE MOTOR.KINDLY HELP ME BY GIVING SUGGESTION THAT HOW TO MAINTAIN THE STARTING TORQUE AND CURRENT FOR HIGH LOADS.

1 Answers   ACC,

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Is it possible to use a S1 duty class motor for crane application (S4)? If not, why?

0 Answers  

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Reversal of corrent feature in MCCB- What is reversalof current -explain broadly.

1 Answers  

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Explain Creepage Distance of Insulator

0 Answers   ABB,

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Explain the process of commutation in a dc machine.

0 Answers  

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Two CTs 1600/1 and 35/1 are in series. while checking the ratio test of a CT(1600/1),same 1600A will also pass through the CT having ratio 35/1. Will it be harmfull to the ct(35/1),if yes , what will happen.CT secondary is shorted

3 Answers  

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how is the testing of an REF relay? what are the test REF circuit having?

0 Answers   Siemens,

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Can any one help me how to set an overload set the range from 2.8A to 4A , rated motor current 22A, CT 60/5A

2 Answers  

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What is the meaning of dsl line in eot crane , and why it is Called down shop lead ? Pls tell exact answer.

3 Answers  

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Wat wil happen if Transformer is operated at 100 HZ Frequency?

8 Answers  

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How can we calculate the rating of capacitor bank to be connected for a particular load(ex.100kw)to improve the power factor from 0.8 to 0.9?

4 Answers   Voltas,

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Explain the laying procedure and laying depth of submarine/subsea power cable for 220/400KV system? Also available cable diameter?

0 Answers   ABB,

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