AEMT - Association of Electrical and Mechanical Trades

29 August 2017
Generator stator exchange completed
Quartzelec Rugby has recently completed the exchange of a generator stator for a waste disposal company from the Midlands. The waste management company generates heat and electrical power from municipal and commercial solid waste, reducing landfill and use of fossil fuels.
Generator stator exchange completed
The contract was awarded to Quartzelec following the discovery of high partial discharge, resulting from electrical degradation of the original stator winding. The project was split into two phases at the request of the customer.

Phase one involved the redesign and manufacture of a new core (using TS Metals’ Trumpf laser cutting machine), with stator coils from Quartzcoil and Rugby factory building the stator core and winding the replacement stator – a Unipak type generator. This process was completed last October.

Phase two included exchange of the wound core into the stator, which was carried out at Rugby, and then reinstallation on customers’ site. January saw the unit lifted out of its plinth and delivered to Rugby workshop, where it was fitted with the new wound core, and other components refurbished or replaced by spares previously purchased by the customer. After the unit had been reassembled, it was ‘light run’ tested at Rugby test facility and delivered back to the customer ahead of the required delivery date. The unit was put back into operation in earlier this year, coinciding with the completion of the plant’s maintenance shutdown.


Castle Mound Way Central Park, Rugby, CV23 0WB, England
01788 512512
Castle Mound Way, Central Park, Rugby, CV23 0WB, UK
01788 512512
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06 September 2017
An extensive joint research project conducted at the University of Nottingham found that energy efficient motors remained within plus or minus 0.5% of their original efficiency after being repaired by a good service centre. This is within the specification tolerances of the label and efficiency banding. These tests were backed by a number of leading international industrial organisations and Government Departments in the UK and USA. Tim Marks of the Association of Electrical and Mechanical Trades (AEMT) reviews the projects and their findings.
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