IEEE PC57.12.20/D10c, Dec 2004
Unapproved IEEE Draft Standard for Overhead Type Distribution Transformers, 500 kVa and Smaller: High Voltage, 34 500 Volts and Below; Low Voltage, 7970/13 800Y Volts and Below
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Language: English
License Type: Single User
Updates: Not Included
About This Item
IEEE PC57.12.20/D10c, Dec 2004 is an inactive draft standard for overhead type distribution transformers rated 500 kVA and smaller. It addresses high-voltage units up to 34,500 volts and low-voltage service up to 7970/13,800Y volts, making it relevant to distribution equipment used in power systems and utility work. This technical document helps define design and performance expectations for transformers where insulation, ratings, and operating compatibility are important.
What is IEEE PC57.12.20/D10c, Dec 2004?
IEEE PC57.12.20/D10c, Dec 2004 is an IEEE draft specification focused on overhead type distribution transformers. Its scope centers on units with 500 kVA capacity and smaller, covering electrical ratings, construction considerations, and the conditions such transformers must meet in service. As a draft standard, it reflects the technical requirements under development at that time for equipment used in overhead distribution networks, where dependable voltage transformation and consistent design practices are essential.
Where is IEEE PC57.12.20/D10c, Dec 2004 used?
This standard is most relevant in utility distribution systems, overhead line installations, and transformer procurement or engineering workflows for low- and medium-voltage service. It may be used when specifying transformers for neighborhood feeders, commercial service drops, or other distribution applications where the voltage ranges in the subtitle apply. IEEE PC57.12.20/D10c, Dec 2004 is also useful for review of transformer ratings, insulation coordination, and equipment compatibility in power, energy, and industry applications.
Why is IEEE PC57.12.20/D10c, Dec 2004 important?
The value of IEEE PC57.12.20/D10c, Dec 2004 lies in helping engineers and buyers align transformer design with expected service conditions. Clear requirements support consistent manufacturing, easier comparison during procurement, and more reliable testing and acceptance decisions. For overhead distribution transformers, standardized guidance can reduce installation risk and improve operational consistency across projects. Referencing IEEE PC57.12.20/D10c, Dec 2004 can also help maintain a shared technical basis for ratings, performance, and compliance review.
- Overhead type distribution transformers
- 500 kVA and smaller ratings
- High-voltage applications up to 34,500 volts
- Low-voltage service up to 7970/13,800Y volts
- Draft IEEE guidance for power distribution equipment
- Publication Date: 2004
- Standard Status: Inactive
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications
- Official IEEE: Doi link
- New Version Available: PC57.12.20 (2023)
- Previous Version: PC57.12.20 (2017)
- Previous Version: PC57.12.20 (2017)
- Previous Version: PC57.12.20 (2016)
- Previous Version: PC57.12.20 (2011)
- Previous Version: PC57.12.20 (2010)
- Previous Version: PC57.12.20 (2004)
- This Version: PC57.12.20 (2004)
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