IEEE 1115-2014

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)