IEEE PC57.12.34/D4E, Jun 2009
Mounted, Compartmental Type, Self Cooled, Three Phase Distribution Transformers, 5 MVA and Smaller; High Voltage, 34.5 kV Nominal System Voltage and Below; Low Voltage, 15 kV Nominal System Voltage and Below
Available Formats:
Availability: Immediate Download
Language: English
License Type: Single User
Updates: Not Included
About This Item
PC57.12.34/D4E, Jun 2009 defines requirements for mounted, compartmental type, self cooled, three phase distribution transformers used in power, energy, and industry applications. This standard is relevant for transformers rated 5 MVA and smaller, with high voltage at 34.5 kV nominal system voltage and below, and low voltage at 15 kV nominal system voltage and below. It helps establish consistent expectations for design and performance, supporting safer selection and more reliable installation of distribution equipment.
Overview of PC57.12.34/D4E, Jun 2009
This technical document addresses the specification and application of three phase distribution transformers built for mounted, compartmental installations and natural self cooling. PC57.12.34/D4E, Jun 2009 is intended to guide equipment that operates within the stated voltage and size limits, making it useful for defining ratings, construction, and performance expectations. In practice, it supports clearer procurement and engineering decisions by aligning transformer characteristics with common distribution system requirements and utility or industrial service conditions.
Typical use cases
PC57.12.34/D4E, Jun 2009 is typically used when specifying transformers for distribution networks that require mounted, compartmental units in compact or protected installations. It is relevant for substations, campus power systems, industrial facilities, and utility distribution points where three phase service must be stepped down within the covered voltage range. The standard is also useful when comparing transformer options for self cooled operation, enclosure-based layouts, and applications where equipment size and system compatibility are important.
Why it matters
This standard matters because transformer selection affects safety, reliability, and long-term system performance. PC57.12.34/D4E, Jun 2009 helps reduce uncertainty in design and purchasing by defining a shared technical basis for voltage class, cooling method, and equipment configuration. That can improve consistency across projects, support compliance checks, and lower the risk of mismatched specifications. For owners and engineers, it also provides a clearer framework for testing, acceptance, and maintenance planning.
- Mounted, compartmental transformer construction
- Self cooled three phase distribution service
- Up to 5 MVA rated capacity
- High voltage class to 34.5 kV nominal
- Low voltage class to 15 kV nominal
- Publication Date: 2009
- Standard Status: Inactive
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications
- Official IEEE: Doi link
- New Version Available: 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)
- This Version: PC57.12.34 (2009)
- Previous Version: PC57.12.34 (2009)
Please request information about the document. Contact Page
Need This Standard?
Request a personalized quote today to receive the latest edition in PDF or other available formats.
Need This Standard?
Request a personalized quote today to receive the latest edition in PDF or other available formats.
Summarize with AI
Get quick summaries using your favorite AI engine.
Online Standart Disclaimer
OnlineStandart.com is an authorized reseller of international standards through partnerships with authorized distributors. We do not own the copyrights or trademarks of the standards we sell, including but not limited to those of API, ASHRAE, BSI, SAE, ASTM, IEEE, IEC, ASME, ISO, and others.
All product names, logos, and brands are property of their respective owners. All company, product, and service names used on this website are for identification purposes only. Use of these names, trademarks, and brands does not imply endorsement.
The content provided on this website is for informational purposes only and is intended to promote our reselling services. OnlineStandart.com is not affiliated with or endorsed by any of the standard organizations unless explicitly stated.
