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Send  Share  RSS  Twitter  01 Jun 2011

ENGINEERING: Electric Motor Repair On The Move

 



Recent Western Cape Business News

IN an innovative move in the electric motor repair industry, Marthinusen & Coutts (M&C) has become the first rotating machinery repairer to install and commission its own rotational cure facility.

This process was previously only carried out by OEMs.”

The first motor to be processed through the new facility was the rewind of the largest motor ever brought to M&C — a 28 MW Jeumon Schneider motor operating at ArcellorMittal in Saldanha (Steel). This motor drives the primary compressor for the entire plant and incorporates an 18 ton, 3 metre diameter stator,” Henk de Swart, M&C’s technical director says.

We took the decision to commission the new rotational cure facility to further underpin the integrity of our motor rewinds, since the use of rotate curing during rewinding achieves far greater resin retention during the curing process. This, in turn, boosts the mechanical strength of the winding and reduces voids and partial discharge, generally extending the life of the insulation.”

Even though our advanced Epovolt VPI resin was developed specifically for the repair industry, our research has shown that significant resin run-off occurs if rotational cure is not applied for more than 90 minutes at the start of the curing cycle.”

During the rotational cure of the 28 MW Jeumon Schneider, resin run-off decreased by 80% and was so apparent that it could actually be seen by an untrained eye.”


 
 
 
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