本指南提供了商业、工业和公用事业系统分布式光伏（DPV）发电系统中升压和降压液浸式和干式变压器应用的一般和具体建议。本指南主要关注DPV发电系统的逆变变压器，这些变压器连接到向变压器初级（LV）绕组提供交流电压和电流的逆变器。还讨论了这些系统中辅助电力变压器的一些细节。本指南中涵盖的变压器符合IEEE标准C57中定义的相关要求。 12.00适用于浸没液体和IEEE标准C57。12.01适用于干式变压器。

This guide provides general and specific recommendations on application of step-up and step-down liquid-immersed and dry-type transformers in distributed photovoltaic (DPV) power generation systems for commercial, industrial, and utility systems. The guide focuses mainly on the inverter transformers of the DPV power generation systems that are connected to the inverters supplying ac voltage and current to the primary (LV) winding of the transformer. Some specifics attributed to the auxiliary power transformers in these systems are also discussed. Transformers covered in this guide comply with the relevant requirements defined in the IEEE Std C57.12.00 for liquid-immersed and IEEE Std C57.12.01 for dry-type transformers.