Green Rameswaram – Energy Efficient Motors – I

In the earlier articles, the importance & rationale of energy efficiency prior to deployment of renewable energy was explained. The role played by electric motors in the utilisation of electric energy was also brought out in details. About 65% of the electricity that is produced is consumed by electric motors in a variety of applications, in industrial, commercial and consumer segments. While heavy industries and high power equipments need motors of larger power rating, it is to be emphasised that billions of electric motors are used in low and extra low power applications. As per one survey the production of electric motors is estimated to be around 7 – 8 billion in numbers, the bulk of them in the fractional and sub-fractional horse power range. In fact about 90% of the volume will be in the range of 5 HP (3.7 kW) or lower.

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