本文件提供了用于固定应用中备用操作的通风镍镉电池（包括部分重组型）的安装设计和安装、维护和测试程序的建议。本推荐规程还提供了确定何时更换这些电池的指南。针对可再生能源系统（如风力涡轮机和光伏系统）提出了单独的建议，这些系统可能只提供部分或间歇性充电。 尺寸、鉴定和其他电池类型，包括密封镍镉电池，也不在本文件的范围内。 本推荐规程不包括直流系统的任何其他部件，也不包括对整个直流系统的检查和测试。充电器和其他直流组件的运行前和定期直流系统测试可能需要将电池连接到系统。 这些测试的细节将取决于直流系统的要求，不在本文件的范围内。

This document provides recommendations for installation design and procedures for installation, maintenance, and testing of vented nickel-cadmium batteries (including partially recombinant types) used for standby operation in stationary applications. This recommended practice also provides guidance for determining when these batteries should be replaced. Separate recommendations are provided for renewable energy systems (e.g., wind turbines and photovoltaic systems), which may provide only partial or intermittent charging. Sizing, qualification, and other battery types, including sealed nickel-cadmium, are also beyond the scope of this document. This recommended practice does not include any other component of the dc system, nor does it include inspection and testing of the overall dc system. Preoperational and periodic dc system tests of chargers and other dc components may require that the battery be connected to the system. Details for these tests will depend on the requirements of the dc system and are beyond the scope of this document.