Superseded by IEEE Std C57.12.20-2005.This standard covers certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of single- and three-phase, 60-Hz, mineral-oil-immersed, self-cooled, overhead-type distribution transformers 500 kVA and smaller, with high voltages 34500 volts and below and low voltages 7970/13800Y volts and below. Such transformers may include one or more of the following features: 1) High-voltage, overcurrent protection; 2) High-voltage, overvoltage protection. 3) Low-voltage, overcurrent protection; 4) Low-voltage, overvoltage protection
- Sponsor Committee
- PE/TR - Transformers
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- Superseded Standard
- Superseded by
- C57.12.20-2005
- Board Approval
- 1996-06-20
- History
-
- ANSI Approved:
- 1997-05-03
- Published:
- 2002-11-30
Working Group Details
- Society
- IEEE Power and Energy Society
Learn More - Sponsor Committee
- PE/TR - Transformers
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