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Star Delta Closed Transition Starter


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#1 Guest__*

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Posted 19 October 2004 - 09:58 AM

Hi
Anybody have any formula to calculate resistance of star delta closed transition starter?

Thanks in advance;f;

#2 marke

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Posted 19 October 2004 - 06:12 PM

It depends on how effective you want the closed transition to be.
Ideally, you want the current through the windingsduring to transition to be of the same order of magnitude as the current in the windings when in star. The actual values are going to be dependent on the power actor at the point of changeover.
I have not seen a definitive formula, but it would be easy to work out from first principles.

Best regards,

#3 jraef

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Posted 19 October 2004 - 07:36 PM

Personally, I am 100% resistant to using closed transition start-delta. It now costs more than using a solid state soft starter.:P
"He's not dead, he's just pinin' for the fjords!"

#4 Guest__*

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Posted 10 January 2006 - 05:17 PM

can any body send me star delta control circuit.

#5 jraef

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Posted 11 January 2006 - 04:02 AM

Yes, if we knew who you were...
"He's not dead, he's just pinin' for the fjords!"

#6 GGOSS

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Posted 11 January 2006 - 11:42 PM

That usually helps!




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