Vertiv APM 0250kMK16FN02000, User Manual

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7 Battery
This chapter introduces the battery, including the battery safety, installation and maintenance information, battery
protection function, as well as the connection of BCB cabinet (option), battery temperature sensor (option), and battery
ground fault detector.
7.1 Introduction
The UPS battery string is composed of several batteries in series connection and provides rated DC input voltage for the
UPS inverter. The required battery backup time (i.e. the time for battery to supply load upon mains failure) is subject to the
ampere-hour value of the battery. Sometimes, it is necessary to connect several strings of battery in parallel.
To facilitate the UPS installation, the battery is installed on the specially designed battery rack or in the battery room.
During the maintenance or repair, the battery must be disconnected from the UPS. This operation should be conducted by
the battery circuit breaker of proper capacity. This circuit breaker will be located as close as possible to the battery
connecting terminal, and the wiring distance of the power and signal cables connected to the UPS shall be minimized.
When several strings of battery are paralleled to increase the battery backup time, disconnecting device will be equipped,
so that the maintenance operation on a certain battery string will not affect the normal operation of other battery strings.
7 Battery
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Vertiv™ Liebert® APM Plus User Manual