IEEE Std C57.12.23-2002 IEEE Standard for Underground Type, Self-Cooled, Single-Phase, DistributionIEEE Std C57.12.23-2002 IEEE Standard for Underground Type, Self-Cooled, Single-Phase, Distribution Transformers with
部份国外标准涉及版权问题,所以全部国外标准于2013年02月,全部删除!相关页面仅提供参考消息。