Vertiv APM 0250kMK16FN02000, User Manual

Page: 128 / 192

7.2 Safety
Take special care when working with the batteries associated with the UPS. When all the blocks are connected, the battery
string voltage can be up to 540 Vdc. This is potentially lethal. Please follow the precautions for high voltage operation. Only
qualified personnel are allowed to install and maintain the battery. To ensure safety, the external batteries are to be
installed inside a lockable cabinet or in a purpose-designed, dedicated battery room, so that they are only accessible to
qualified service personnel.
Confirm that the battery switch has been disconnected before battery maintenance.
W A R N IN G !
Hazard ous b attery voltag e p res ent b ehind covers
1. No user-serviceable parts are located behind covers that require a tool for their removal. Only qualified service personnel are authorized to remove such
covers.
2. Before working on the copper bars connected to the external battery, please ensure they are disconnected from all power supplies.
Proper connection mode Improper connection mode
Tighten the terminal bolt of the battery with specified torque
Too large or too small torque may cause poor connection of the terminal.
Under certain conditions, the terminal may have arcing or heat
accumulation, which finally will cause fire
7 Battery
120
Vertiv™ Liebert® APM Plus User Manual