IEEE 21-1942
AIEE Standards for Apparatus Bushings and Proposed Test Code for Apparatus Bushings
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About This Item
21-1942 is a superseded technical standard for AIEE Standards for Apparatus Bushings and a Proposed Test Code for Apparatus Bushings, addressing the design and testing context for bushings used in power apparatus. It is relevant to engineering work involving insulation, electrical performance, and component reliability, where bushing requirements can affect safe operation and equipment consistency. For organizations reviewing legacy specifications, 21-1942 offers historical reference for apparatus bushing practice.
About 21-1942
This standard combines apparatus bushing requirements with a proposed test code, indicating a focus on both construction and verification. In the context of power, energy, and industrial applications, bushings serve as critical insulating interfaces where conductors pass through grounded enclosures or other barriers. 21-1942 helps define how these components should be assessed and compared, supporting technical review of materials, ratings, and test methods. As a superseded document, it is most useful as a historical or legacy engineering reference.
Where is 21-1942 used?
21-1942 is typically relevant in electrical equipment environments where apparatus bushings are specified, inspected, or evaluated. That may include transformers, switchgear, and related high-voltage or medium-voltage assemblies used in utility and industrial power systems. It can also support procurement and documentation workflows when older equipment designs or archived specifications must be checked against legacy AIEE guidance. In practice, it helps teams interpret bushing-related requirements within equipment design and test programs.
Importance in practice
Even though 21-1942 is superseded, it can still matter when comparing legacy apparatus or tracing how bushing requirements were originally framed. For engineers and buyers, the document can support consistency in specification review, test planning, and equipment documentation. Clear bushing criteria are important because insulation and interface performance influence reliability and safety in power equipment. Referencing this standard may also reduce ambiguity when evaluating older assets or historical compliance records.
- Apparatus bushing requirements
- Proposed test code guidance
- Insulation and performance context
- Legacy power equipment reference
- Superseded AIEE document
- Publication Date: 1942
- Standard Status: Superseded
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications; Components, Circuits, Devices and Systems
- Official IEEE: Doi link
- This Version: 21 (1942)
- Previous Version: 21 (1941)
- Previous Version: 21 (1976)
- Previous Version: 21 (1964)
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