本推荐规程涵盖了用于固定应用中备用操作的镍镉电池的尺寸。建议适用于包括但不限于发电站、变电站、电信、开关设备和控制系统、压缩机站、应急照明和不间断电源在内的应用。为发动机起动应用的尺寸确定提供了指南。以下主题超出了本文件的范围:安装、维护、鉴定和测试程序；考虑镍镉以外的电池类型；仅提供部分或间歇性充电的可再生能源系统（如风力涡轮机和光伏系统）；直流系统的设计和电池充电器的尺寸

This recommended practice covers the sizing of nickel-cadmium batteries used for standby operation in stationary applications. Recommendations are provided for applications including, but not limited to, generating stations, substations, telecommunications, switchgear and control systems, compressor stations, emergency lighting, and uninterruptible power supplies. Guidance is provided for sizing for engine-starting applications. The following topics are beyond the scope of this document: Installation, maintenance, qualification, and testing procedures; Consideration of battery types other than nickel-cadmium; Renewable energy systems (e.g., wind turbines and photovoltaic systems) that may provide only partial or intermittent charging; Design of the dc system and sizing of the battery charger(s)