本标准涵盖了某些电气、尺寸和机械特性，并考虑了三相、60 Hz、液浸、自冷、垫装、隔间式配电变压器的某些安全特性。这些变压器的额定值为10 MVA及以下，高压极限为34.5 kV系统标称电压及以下，低压极限为15 kV系统标称电压及以下。这些变压器通常用于地下一次电缆电源的降压目的。本标准涵盖径向或环形连接器、衬套和端子布置- 饲料系统。应规定某些最小尺寸或特定尺寸。本标准不包括变压器可能附带的任何附件装置的电气和机械要求。

This standard covers certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of three-phase, 60 Hz, liquid-immersed, self-cooled, pad-mounted, compartmental-type distribution transformers. These transformers are rated 10 MVA and smaller, with the high-voltage limit of 34.5 kV system nominal voltage and below, and with low-voltage limit of 15 kV system nominal voltage and below. These transformers are generally used for step-down purposes from an underground primary cable supply. This standard covers the connector, bushing, and terminal arrangements for radial or loop-feed systems. Either certain minimum dimensions or certain specific dimensions shall be specified. This standard does not cover the electrical and mechanical requirements of any accessory devices that may be supplied with the transformer.