Liebert 30-130kVA Operation And Maintenance Manual page 103

Automatic Module Off Line
For specified UPS system faults, the control logic will initiate an automatic transfer to bypass fol-
lowed immediately by a shutdown and isolation of the UPS system. All UPS contactors and the bat-
tery circuit breaker are opened. The static bypass switch will close if the bypass line is available. Note
that the bypass line is usually not available during Low Battery Shutdown.
The following UPS system faults will initiate an automatic transfer to bypass:
• DC Over-Voltage Shutdown
• Hardware Shutdown
• Inverter Fault
• Low-Battery Shutdown
• Output Over-Voltage
• Overload Shutdown
• Over-Temperature Time out
• Rectifier Fuse Blown
• Reverse Power
Refer to 3.4 - Faults, Alarms, Status for more information regarding these alarm messages.
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Operation