can we use existing delta star with neutral grounded,step down(6.6kV/415V), 3 phase power transformer bi-directionally.

3 Answers   GMR,

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I have 3KVA Libert GTX2 UPS. I need to calculate the back up time with some load. How to calculate the Back time. I need the expert guide

1 Answers  

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what is meant by boost charge in batteries

1 Answers   MTS,

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What is Icu and Ics and what is difference b/w them. please tell me how to calculate a size of a copper bar for a system or a breaker... reply on... king.arish@gmail.com would be waiting for a logical answer.

0 Answers  

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why we use REF and Differential Protection in one transformers?my doubt is both protections are operated in internal fault only.why we want to use 2 protections?please clarify.

7 Answers  

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What will happen if I apply DC to AC transformer? please send detailed answer at habib_rahman_habib786@yahoo.com

4 Answers  

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If single phase having 220v so why 3phase is440v.

7 Answers   DLF,

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what is brushless alternator?

0 Answers  

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1 amp means-how many electron flow per second. ?

2 Answers  

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working

1 Answers  

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which is more dangerous A.c or D.C?

26 Answers  

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carbon zinc cell voltage?

3 Answers  

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