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Posted by on August 10, 2006, 9:50 am
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>Our MES has just acquired a Mk 1 Clarkson tool & cutter grinder. The
>whole uint was originally connected to 3ph supply but we have only
>1ph. The plate on the motor states its is 380-440 or 220-250v and
>there is further info giving the changes in wiring connections for
>single phase operation.
>
>One member suggests we will need a capacitor for 1 ph operation but
>there's no mention of this on the motor.
>The motor is a Brook Gryphon type TEFC and so far, I've had no
>response to an email from the present Brook Motors re use of
>capacitor.
>
>There is a lamp running off a transformer, in turn, part of the on/off
>switch but obviously we can delete this part.
>
>Any information on these motors welcome, especially whether a
>capacitor is need or not.
>
>IanC.
A "last final" note on this . . .
This morning I put Peter Forbes' suggestion to the test and to my
surprise the motor accelerated, slowly at first, then ran perfectly.
I may now try a 20mfd capacitor to maybe improve initial acceleration.
Renewed thanks, this has saved us much time and aggravation <IanC>
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>whole uint was originally connected to 3ph supply but we have only
>1ph. The plate on the motor states its is 380-440 or 220-250v and
>there is further info giving the changes in wiring connections for
>single phase operation.
>
>One member suggests we will need a capacitor for 1 ph operation but
>there's no mention of this on the motor.
>The motor is a Brook Gryphon type TEFC and so far, I've had no
>response to an email from the present Brook Motors re use of
>capacitor.
>
>There is a lamp running off a transformer, in turn, part of the on/off
>switch but obviously we can delete this part.
>
>Any information on these motors welcome, especially whether a
>capacitor is need or not.
>
>IanC.