what is the best way to start a 15 KW motor for pump star-delta or direct on line ? and from how many KW i must use direct on line ?

1 Answers  

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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 electrical machines

1 Answers  

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On what basis do you decide the ONAN (Oil Natural air natural) or Dry type transformer for a project?

0 Answers   Semac,

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what will be the motor terminal box connection arrangement (star or delta). on what basis it decided?

3 Answers  

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Can i use the B-curve MCB instead of C-curve MCB

0 Answers  

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how to wiring 20 hp motor get completated?

1 Answers   Alchemist,

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what is the effect of power factor on DG supply,i mean to say what will the effect if we add capactors on dg supply.

4 Answers   HCL,

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How to Calculate The Neutral Earth flat design calculation for the Synchronised generator (Gen 1-650Kva, Gen 2-725Kva

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two generator runnig with parallel but only one NGR on And one off Why

1 Answers  

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Describe the difference between a microcontroller and a general purpose computer.

2 Answers   Siemens,

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can anyone tel me what is competency of electrical supervisor??

2 Answers   ONGC,

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