本规范涵盖28伏（V）直流（dc）发电系统，通过皮带或直接连接驱动发动机，为充电和工作负载提供60安培（A）。该系统由一个旋转磁场交流发电机组成，该发电机在一个外壳中带有集成二极管整流器和可调电压调节器。本规范还包括该系统的维修零件。

This specification covers 28 volts (V), direct current (dc) generating systems, engine driven through belt or direct connection, to provide 60 amperes (A) for charging and operating loads. The system consists of a rotating field alternator with integral diode rectifier and adjustable voltage regulator in a single housing. This specification also covers repair parts for this system.