IEEE PC57.12.34/D8, Feb 2015
Mounted, Compartmental Type, Self Cooled, Three Phase Distribution Transformers, 10 MVA and Smaller; High Voltage, 34.5kV Nominal System Voltage and Below; Low Voltage, 15kV Nominal System Voltage and Below
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Language: English
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About This Item
PC57.12.34/D8, Feb 2015 is a technical standard for mounted, compartmental type, self-cooled three phase distribution transformers rated 10 MVA and smaller, covering high voltage at 34.5 kV nominal system voltage and below and low voltage at 15 kV nominal system voltage and below. It is relevant to power, energy, and industrial applications where transformer design, rating, and performance need clear requirements. For manufacturers, utilities, and specifiers, PC57.12.34/D8, Feb 2015 helps support consistent equipment selection and reliable system integration.
PC57.12.34/D8, Feb 2015 overview
This standard defines a technical framework for a specific class of distribution transformers used in compartmental, mounted installations. It addresses equipment intended for three phase service with self-cooling, where voltage ratings and size are limited by the stated system ranges. The document is useful when comparing designs, preparing procurement requirements, or checking compliance for transformer assemblies that must fit utility and industrial distribution needs. PC57.12.34/D8, Feb 2015 helps align engineering expectations around construction, electrical ratings, and application boundaries.
Typical use cases
This specification is commonly applied to distribution transformer projects for utility feed points, commercial substations, and industrial power distribution where mounted, compartmental equipment is preferred. It is relevant to three phase systems that step voltage down within the stated high and low voltage limits and where self-cooled operation is suitable. PC57.12.34/D8, Feb 2015 may be used when defining transformer requirements for new installations, replacement equipment, or coordinated procurement across power and energy infrastructure.
Why this standard matters
PC57.12.34/D8, Feb 2015 matters because it supports consistent technical expectations for a transformer category where safety, interchangeability, and performance can affect the entire distribution network. Using a defined standard helps reduce ambiguity in design review, tendering, testing, and acceptance. It also gives buyers and engineers a clearer basis for comparing products against the same scope of voltage, cooling, and construction requirements, which can lower project risk and improve long-term operational reliability.
- Mounted, compartmental transformer configuration
- Three phase, self-cooled distribution service
- 10 MVA and smaller rating scope
- 34.5 kV nominal system voltage and below
- 15 kV nominal system voltage and below
- Publication Date: 2015
- Standard Status: Active
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications; Components, Circuits, Devices and Systems
- Official IEEE: Doi link
- New Version Available: PC57.12.34 (2022)
- Previous Version: PC57.12.34 (2022)
- Previous Version: PC57.12.34 (2022)
- This 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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