User manual

16 Chapter 2 Battery
NXr UPS Module And Parallel System 30kVA ~ 200kVA User Manual
Chapter 2 Battery
This chapter introduces the relevant information of the battery, including the brief introduction, battery safety, battery
power cables, battery maintenance and recycling, reference current and connection of external BCB.
2.1 Brief Introduction
The UPS battery string consists of battery cells (or blocks) connected in series to provide a d.c. input voltage for the
UPS inverter to operate. The required battery backup time (that is, the time during which the battery can maintain
supply to the load in the event of a mains failure) is subject to the ampere-hour capacity of the battery. To achieve the
capacity required, subject to recommendation from the battery manufacturer, several battery strings may be
connected in parallel. Batteries of different brand, model and age should nottbe used together.
Except for the NXr 30K-B model that contains internal batteries, all UPS batteries are located external to the UPS
cabinet and is normally housed in a battery cabinet or located on stands/racks.
The NXr 30K-B UPS provides a battery compartment to accommodate internal batteries. Up to 40 x 24Ah/12V battery
blocks can be accommodated.