IEEE 493-1997
IEEE Recommended Practice for the Design of Reliable Industrial and Commercial Power Systems (Gold Book)
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- Language: English
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- Language: English
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About This Item
IEEE 493-1997 is the IEEE Recommended Practice for the Design of Reliable Industrial and Commercial Power Systems, widely known as the Gold Book. It addresses how power systems are planned and evaluated to support dependable operation in industrial and commercial settings. For engineers and specifiers, this standard helps frame design decisions around reliability, continuity, and practical system performance in the power, energy, and industry applications space.
Overview of IEEE 493-1997
This standard provides guidance for designing power systems where reliability is a key concern. IEEE 493-1997 is associated with industrial and commercial facilities that depend on stable electrical service for critical operations, and it is often used when evaluating system configurations, redundancy, and expected service continuity. As a recommended practice, it supports technical decision-making rather than prescribing a narrow compliance formula, making it useful during planning, review, and engineering analysis.
Typical use cases
IEEE 493-1997 is commonly referenced when designing or reviewing facility electrical systems that must reduce interruption risk. Typical use cases may include plant power distribution, commercial building electrical infrastructure, critical process loads, and other installations where outage consequences are significant. It can also support studies tied to system reliability, equipment selection, and power architecture decisions for industrial and commercial environments. The Gold Book title reflects its focus on dependable power system design.
Why it matters
Reliable power design affects safety, productivity, and operating cost, especially where electrical interruptions can disrupt production or essential services. IEEE 493-1997 helps teams apply a consistent technical basis for evaluating reliability and comparing design options. That can improve procurement decisions, reduce ambiguity in specifications, and support more controlled engineering outcomes. Because this edition is marked superseded, it is also important for documentation review and legacy system references, including legacy references to IEEE 493-1997.
- Reliable industrial and commercial power design
- System continuity and outage risk evaluation
- Electrical distribution planning and review
- Legacy reference for the Gold Book
- Publication Date: 1998
- Standard Status: Superseded
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications
- Official IEEE: Doi link
- New Version Available: 493 (2007)
- This Version: 493 (1998)
- Previous Version: 493 (1991)
- Previous Version: 493 (1979)
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