"Orange Book"- ANSI/IEEE Standard 446-1987

The IEEE Recommended Practice for Emergency & Standby Power Systems for Industrial and Commercial Applications is written to help users of industrial operations, medical facilities and solid-state computer installations meet the demand for power almost completely free of frequency excursions and voltage dips, surges and transients. It includes the recommended engineering practices for the selection of applications of emergency and standby power systems and provides guidelines for assuring uninterrupted electric service.

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