IEEE 485-1983
IEEE Recommended Practice for Sizing Large Lead Storage Batteries for Generating Stations and Substations
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About This Item
IEEE 485-1983 is a recommended practice for sizing large lead storage batteries used in generating stations and substations. It gives guidance for determining battery capacity so critical DC power remains available for control, protection, and backup functions in power and energy applications. For nuclear engineering and other utility environments, the standard helps support dependable design decisions where battery sizing affects operating continuity, equipment protection, and overall system reliability.
About IEEE 485-1983
IEEE 485-1983 focuses on the practical task of selecting the correct capacity for large lead storage batteries serving stationary power systems. Its technical context is the design of battery systems that must perform under defined load conditions in generating stations and substations. The document is useful when engineering teams need a consistent method for sizing batteries rather than relying on estimates. As a standard in the IEEE 485 series, it supports disciplined planning for DC supply requirements in critical power infrastructure.
Where is IEEE 485-1983 used?
This standard is commonly used in utility substations, generating stations, and related plant systems that depend on large lead storage batteries for control and emergency support. It is relevant to DC boards, switchgear control, protection relays, and other auxiliary loads that must stay energized during interruptions. In nuclear engineering and broader power applications, IEEE 485-1983 helps guide battery sizing for equipment that needs reliable standby power and predictable performance under operating and outage conditions.
Importance in practice
IEEE 485-1983 matters because battery sizing directly affects system availability, safety, and operational control. Using a recognized recommended practice can improve consistency in design reviews, procurement specifications, and acceptance checks for battery-backed DC systems. It also helps reduce the risk of undersizing, which may lead to inadequate runtime or loss of support for critical loads. For teams responsible for substations or generating facilities, the standard offers a practical basis for defensible engineering decisions.
- Large lead storage battery sizing
- Generating station DC support
- Substation control and protection loads
- Critical backup power planning
- Publication Date: 1983
- Standard Status: Superseded
- Publisher: IEEE
- Subject: Nuclear Engineering; Power, Energy and Industry Applications
- Official IEEE: Doi link
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