IEEE PC57.12.34/D2.9, Jan 2022
Phase Distribution Transformers, 10 MVA and Smaller; High-Voltage, 34.5 kV Nominal System Voltage and Below; Low-Voltage, 15 kV Nominal System Voltage and Below
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About This Item
PC57.12.34/D2.9, Jan 2022 is a technical standard for phase distribution transformers rated 10 MVA and smaller, with high-voltage systems at 34.5 kV nominal and below and low-voltage systems at 15 kV nominal and below. It helps define the design and performance expectations for distribution-class transformers used in power, energy, and related industrial applications. For engineers, purchasers, and testing teams, this document supports more consistent specification and evaluation of transformer equipment.
About PC57.12.34/D2.9, Jan 2022
This standard addresses the requirements and technical context for phase distribution transformers within a defined voltage and power range. PC57.12.34/D2.9, Jan 2022 is relevant where transformer design, ratings, insulation coordination, and performance considerations must align with a recognized specification. It is especially useful when comparing equipment options, checking compliance, or confirming that a transformer matches the intended system voltage and application limits. The document is inactive, but it remains important for understanding the referenced technical basis.
Where is PC57.12.34/D2.9, Jan 2022 used?
PC57.12.34/D2.9, Jan 2022 is typically used in distribution networks and related industrial power systems where phase transformers serve lower-voltage delivery needs. It may apply to utility substations, feeder connections, and equipment packages for site-level power transformation. The subtitle points to systems operating at 34.5 kV nominal and below on the high-voltage side, and 15 kV nominal and below on the low-voltage side, making it relevant to common distribution transformer procurement and engineering workflows.
Importance in practice
In practice, this standard helps reduce ambiguity in transformer selection, specification, and testing. PC57.12.34/D2.9, Jan 2022 can support more reliable comparison of equipment from different suppliers by setting a common technical frame for ratings and expected performance. That is important for safety, interoperability, and procurement control, especially when transformers must fit established voltage classes and loading conditions. Using a defined standard also helps limit design risk and supports more consistent acceptance checks.
- Phase distribution transformers
- 10 MVA and smaller ratings
- 34.5 kV nominal and below
- 15 kV nominal and below
- Design, testing, and procurement reference
- Publication Date: 2022
- Standard Status: Inactive
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications; Components, Circuits, Devices and Systems
- Official IEEE: Doi link
- This Version: PC57.12.34 (2022)
- Previous Version: PC57.12.34 (2022)
- Previous Version: PC57.12.34 (2022)
- Previous Version: PC57.12.34 (2015)
- Previous Version: PC57.12.34 (2015)
- Previous Version: PC57.12.34 (2009)
- Previous Version: PC57.12.34 (2009)
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