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Bhatti
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Joined: 12-February 09
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Last Seen: 13th February 2009 - 11:37 AM
Local Time: Mar 16 2010, 02:13 PM
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Bhatti

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13 Feb 2009
QUOTE (bob @ May 8 2008, 09:05 AM) *
Thanks Mark. I shall keep you informed.

Kind regards.
Bob


excl.gif Hi
we are using two 1150 kw, 6.3 kv slipring motors with two liquid starters to rotate a cement ball mill, the problem is that when we start the mill ,both motors start together through same breaker, and start the mill to rotate but after rotating approximately at 45 deg in forword direction mill rotate back at about 30 deg and then again in to forword direction, it shows that motors torque at that time is less than the media weight which force it to run back . i want to increase the torque of both motors that they should not allow the mill to rotate back.

thanks
Bhatti
Bestway Cement Pakistan
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