delta motor winding resistance I take normally single winding is 2.5, which value is came delta connection ie RY ?

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why ct is testing using dc.. y cant we use AC insted of dc on POLARITY TEST.

6 Answers  

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why batteries are rated in ampere hour

1 Answers  

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What is the recommended voltage gap between Live and Earth and ,Earth and Neutral.If these are exceded what is the solution.

2 Answers  

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Why a Permanent Magnet Generator has higher frequency as compared to frequency of main alternator?

0 Answers  

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when any relay trips in any ckt then what type of setting is there in motor?what is function of relay in that ckt?

3 Answers   Finolex,

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Difference between online and offline UPS?

11 Answers  

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what is cathodic protection and why it use in industries?

0 Answers  

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why not phase to phase fault occure in raining day in hv sub-station?

1 Answers   Getco,

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WHAT IS VFD,FUNCTION, PURPOSE,

2 Answers   RasGas,

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Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

0 Answers  

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what is the meaning of the HT LT transformer?

10 Answers   Sify,

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