Revision Standard - Superseded.
Certain electrical, dimensional, and mechanical characteristics and safety features of single- and three-phase, 60 Hz, liquid-immersed, self-cooled, overhead-type distribution transformers 500 kVA and smaller, high voltages 34 500 V and below, and low voltages 7970/13 800Y V and below are covered in this standard.
This standard covers certain electrical, dimensional, and mechanical characteristics and safety features of single- and three-phase, 60 Hz, liquid-immersed, self-cooled, overhead-type distribution transformers 500 kVA and smaller, high voltages 34 500 V and below, and low voltages 7970/13 800Y V and below.
This standard is intended for use as a basis for determining the performance, interchangeability, and safety of overhead-type distribution transformers and to assist in the proper selection of this equipment.
SDO | IEEE: Institute of Electrical and Electronics Engineers |
Document Number | C57.12.20 |
Publication Date | Nov. 30, 2017 |
Language | en - English |
Page Count | 52 |
Revision Level | |
Supercedes | |
Committee | Transformers |