IEEE C37.47-1981
Limiting Fuses
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About This Item
C37.47-1981 is a standard focused on limiting fuses for power, energy, and related industrial applications. It provides technical guidance for a device class used to control fault current and protect equipment in electrical systems. For engineers, purchasers, and compliance teams, this standard helps define the expected characteristics of limiting fuses so they can be selected and applied with greater consistency. As a superseded document, C37.47-1981 remains useful for historical reference and legacy system support.
About C37.47-1981
This technical document addresses the requirements and terminology associated with limiting fuses, a protective component commonly used in electrical power systems. C37.47-1981 is relevant where controlled interruption of fault conditions and coordination with surrounding equipment are important. It may help guide evaluation of fuse performance, ratings, and application expectations in power-focused installations. For organizations maintaining older designs or reviewing archived specifications, the standard can support clearer interpretation of legacy engineering and procurement records.
Where is C37.47-1981 used?
C37.47-1981 is typically used in contexts where limiting fuses are applied to protect feeders, transformers, switchgear, or other equipment in electrical distribution and industrial power systems. It can be relevant to utilities, plant electrical maintenance, and engineering teams working with legacy protection schemes. The standard is also useful when comparing replacement components or reviewing specifications for installations that were designed around earlier fuse practices. In these settings, C37.47-1981 helps keep application and selection decisions aligned with established technical expectations.
Importance in practice
In practice, limiting fuse standards matter because protection devices must perform predictably during faults. C37.47-1981 supports consistency in design review, equipment compatibility, and procurement by giving users a common technical reference. That can reduce uncertainty when evaluating ratings, coordination, and suitability for existing systems. For maintenance and compliance work, the standard also helps teams compare legacy documentation against the intended protective function, lowering the risk of mismatched parts or incomplete specification control.
- Limiting fuse application guidance
- Power system protection context
- Legacy specification reference
- Compliance and procurement support
- Publication Date: 1981
- Standard Status: Superseded
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications
- Official IEEE: Doi link
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