The repair of low tension induction motors-best practices to maintain energy efficiency

摘要

Environmental issues generally have focussed a spotlight on the subject of electric motor efficiency. Electric motors use over half the delivered electrical energy in any developed economy and in most countries, generating that electricity gives rise to significant emissions of CO/sub 2/ and other so called 'greenhouse' gasses. Whilst much of the attention has been to increase the efficiency of new motors, it has become clear that poor rewinding can reduce motor efficiency. This paper describes work done in the UK by the Association of Electrical and Mechanical Trades (AEMT) which represents the majority of UK motor repairers, together with a leading electric motor manufacturer to establish best practice methods to minimise or, if possible, eliminate any reduction of efficiency caused by rewinding.