Inrush Current During The Transition Of Star-delta ? |
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Inrush Current During The Transition Of Star-delta ? |
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 Apr 11 2008, 04:19 AM
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#1
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 Group: Members Posts: 1 Joined: 15-December 05 Member No.: 1,306  |
I have 15kw 380V 3 Ph induction motor, starting by star-Delta, how to calculate the inrush current during the transition ?
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Apr 16 2008, 07:12 AM
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#2
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Senior Member Group: Moderator Posts: 404 Joined: 17-May 02 From: Melbourne Member No.: 14 |
It's not possible to do this without having motor current and torque vs speed curves and load torque vs speed curve for the driven machine.
Worst case conditions will be: 2 x current drawn just prior to transition 4 x torque produced just prior to transition. The values are determined by motor and load characteristics and can vary quite considerably between installations. Hoper that helps, Regards, GGOSS |
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