Answer / sheikh

A heavy motor connected on heavy load can not be started
directly in delta because in delta connection starting
current may exceed on alarming level and motor may going
to burnt out. so minimize the level of starting current such
motor should be started in star thereafter delta in smooth
speed.

Answer / nani

I agree with Mr. Sheikh. All starters will be used for that purpose only..

What are the relative advantages of using Star Delta Starter compared to other starters?

That is importent.

why the voltage is in digit of 11/33/132/220/440 please send me on shukrerabbi_abkhalil@rediffmail.com with thanks

3 Answers  

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sir, what is the importance of Fault MVA. how to calculate fault mva of 33kv substation connected by 6.5 km line(single circuit with equal spacing) with 110/11kv transformer in 110kv susbstation.the fault mva on 11 kv bus in 110kv susbstation is 208mva.

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The ohm is the unit of:(a) Charge(b) Resistance(c) Power(d) Current

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