Vertiv EXM 0080kTK16FN01000, User Manual

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74 Chapter 5 UPS Operation Introduction
Liebert EXM 80kVA ~ 200kVA UPS User Manual
160kVA ~ 200kVA (with optional switch cabinet)
Figure 5-1 UPS power switch
5.2 UPS Startup Procedures
The UPS must be completely installed and tested by authorized engineer, and external power supply
switch is closed, then you can start the UPS.
5.2.1 Startup Procedures In Normal Mode
Warning
1. These procedures result in mains voltage being applied to the UPS output terminals.
2. If any load equipment is connected to the UPS output terminals, check with the user that it is safe to apply power.
If the load is not ready to receive power, please disconnect the downstream load switch, and stick a warning label on
the connection point of the load.
Use the following procedures to turn on the UPS from a fully powered down condition.
1. Open the front door of the UPS, ensure that the internal maintenance bypass switch Q3 is disconnected,
while the input cables and copper bars are reliably connected.
2. Close the external input switch, ensure that the UPS input voltage, frequency and phase are normal.
Warning
To avoid misreporting as faults, all operations relating to disconnection or connection of the maintenance bypass
switch shall be finished within three seconds.