本指南讨论并推荐了测试和评估负载分接开关（LTC）中矿物变压器油中溶解气体的方法。LTC机构的一般类型、呼吸配置和电气设计将包括在确定何时发生机械损坏或故障的评估标准中。需要对LTC中的油进行溶解气体分析（DGA）。本指南并非特定于制造商，而是特定于类别。

This guide discusses and recommends methods of testing and evaluating dissolved gases in mineral based transformer oils found in load tap changers (LTCs). General types of LTC mechanisms, breathing configurations, and electrical design will be included for evaluation criteria in determining when mechanical damage or failure has occurred. Dissolved gas analysis (DGA) of the oil in the LTC is required. This guide is not manufacturer specific, rather category specific.