sigh007 发表于 2014-8-4 11:06:32

ANSI C57.12.55-1987(R1998) Transformers - Dry-Type Transformers Used in Unit Ins

ANSI C57.12.55-1987(R1998) Transformers - Dry-Type Transformers Used in Unit Installations, Including Unit Substations - Conformance Standard



sch_jack 发表于 2016-6-6 13:16:28

感謝樓主的分享.......^_^

goldlion666 发表于 2017-11-15 09:10:01

该标准有更新吗，现在有最新版吗
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