Maintenance, Service, and Faults
• The UPS system operates with hazardous voltages. Repairs may be carried out only by qualified maintenance
personnel.
WARNING! Risk of electric shock. Even after the unit is disconnected from the mains (building wiring outlet),
components inside the UPS system are still connected to the battery and electrically live and dangerous.
• Before carrying out any kind of service and/or maintenance, disconnect the batteries and verify that no current is
present and no hazardous voltage exists in the terminals of high energy capacitors such as Bus capacitors.
• Only persons that are adequately familiar with batteries and with the required precautionary measures may
replace batteries and supervise operations. Unauthorized persons must be kept well away from the batteries.
WARNING! Risk of electric shock. The battery circuit is not isolated from the input voltage. Hazardous
voltages may occur between the battery terminals and the ground. Before touching, please verify that no
voltage is present!
• Batteries may cause electric shock and have a high short circuit current. Please take the precautionary measures
specified below and any other measures necessary when working with batteries:
• Remove wristwatches, rings, and other metal objects.
• Use only tools with insulated grips and handles.
• When changing batteries, install the same number and same type of batteries.
• Do not attempt to dispose of batteries by burning them. This could cause battery explosion.
• Recycle or dispose of batteries properly according to local regulations.
• Do not open or destroy batteries. Escaping electrolyte can cause injury to the skin and eyes. It may be toxic.
• Please replace fuses only with the same type and amperage in order to avoid fire hazards.
• Do not dismantle the UPS system.
Output Short Circuit Current
Model Max Peak for AC mode Max RMS for AC mode
GXT5-10KHVRT5UXLN 224.4 A 81.1 A (Duration: 159.5 ms)
Table 1.1 Output Short Circuit Current
2 Proprietary and Confidential ©2024 Vertiv Group Corp. 1 Important Safety Instructions
Vertiv™ Liebert® GXT5 UPS Installer/User Guide