本SAE标准规定了用于卡车和公共汽车的多电压配电系统（MVPD）的最低电路标识和要求。多电压配电系统是指将两个或三个电压（高达60 VDC）分配给控制器、仪器和设备的系统。

This SAE Standard establishes the minimum circuit identification and requirements for Multi-Voltage Power Distribution Systems (MVPDS) for use on trucks and buses. A Multi-Voltage Power Distribution System is one that distributes two or three voltages, up to 60 VDC, to power the controls, instruments, and devices.