IEEE C57.146-2005
Immersed Transformers
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- Language: English
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About This Item
C57.146-2005 is an English-language standard for immersed transformers in the power, energy and industry applications space. It addresses technical considerations that may affect transformer design, performance, and application in liquid-immersed service. For engineers, buyers, and specification writers, this standard helps define a clearer basis for comparing equipment and supporting consistent procurement and engineering review. As an inactive document, C57.146-2005 remains relevant for reference in legacy projects and technical documentation.
About C57.146-2005
This standard focuses on immersed transformers, generally covering the type of technical requirements that support safe and dependable transformer use in electrical power systems. It is relevant where liquid-immersed units are specified, evaluated, or maintained, and where design choices can influence insulation performance, cooling, ratings, and operating limits. C57.146-2005 is useful as a reference point when documenting requirements or reviewing equipment against a defined engineering baseline.
Where is C57.146-2005 used?
C57.146-2005 is typically used in power equipment specification, utility engineering, and industrial electrical projects involving immersed transformers. It may be applied when selecting transformers for substations, distribution networks, or facility power systems where liquid insulation and cooling are part of the design. The standard can also support technical reviews, supplier comparisons, and maintenance planning for equipment that must align with established transformer practice in power, energy and industry applications.
Importance in practice
In practice, this standard helps reduce ambiguity around transformer requirements and supports more consistent design and procurement decisions. For immersed transformers, that can matter for insulation coordination, thermal performance, rating interpretation, and overall reliability. Using a defined standard also helps improve communication between manufacturers, engineers, and purchasers, while giving projects a clearer basis for testing, acceptance, and documentation. C57.146-2005 is especially useful where legacy equipment or historical specifications still guide engineering decisions.
- Immersed transformer application guidance
- Design and rating reference
- Insulation and cooling context
- Utility and industrial power systems
- Legacy technical documentation support
- Publication Date: 2006
- Standard Status: Inactive
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications
- Official IEEE: Doi link
- This Version: C57.146 (2006)
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