Publication 116 Electrical energy efficiency

Publication Year

1997

Document Status

Withdrawn

Abstract

Introduces the reader to the concepts of financial appraisal and power losses in inefficient electrical installations and provides information on the scale of these losses and the sums of money they are costing industry. Covers: The importance of considering running costs as well as capital costs before specifying new plant, economic justification for selection of high-efficiency motors is illustrated with actual case histories, The magnitude and nature of transformer losses is given along with methods of evaluation of these losses, Energy losses in undersized power cables, gives the reasons for selecting power cables larger then the minimum safe size recommended in the IEE regulations, which not only reduces power losses but also improves power quality, and finally the complete installation from transformer through cable to motor is considered with a worked example showing the total savings to be made by specifying energy-efficient options throughout the system.

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