IEEE Std C57.12.80-1978 IEEE Standard电气和电子工程师协会标准Part 2

IEEE Std C57.12.80-1978 IEEE Standard电气和电子工程师协会标准Part 2 This document describes electrical, mechanical and test requirements of liquid-immersed, single- and three-phase, 50 Hz and 60 Hz, self and forced-air cooled, distribution, overhead and substation,...