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Installation
15 Liebert
®
GXT3
™
11. Through the rack-mount ears, use M5 screws provided in this kit to secure the front of the UPS to
the rack’s vertical rails to prevent the UPS from sliding out of position.
12. If optional Liebert external battery cabinets will be connected to the UPS, they can be placed all
on one side of the UPS or stacked beneath the UPS. The installation procedures are the same as
those for the UPS.
2.5 Cable Connection
The Liebert GXT3 rear panel has an input receptacle and output receptacles. Refer to 1.3.2 - Rear
Panel Features for details. The battery cables are supplied with the battery cabinet.
2.5.1 Connecting to AC Mains and Loads
The specification of input circuit breaker on the rear panel of the UPS is given in Table 2.
1. Plug all loads into the output receptacles on the rear panel of the Liebert GXT3.
3. Plug the input receptacle of the Liebert GXT3 into the input power connection.
2.5.2 Connecting Battery Cables
1. Switch Off the input breaker of the battery cabinet.
2. Take out the battery cable included with the battery cabinet.
3. Connect one end of the battery cable to the external battery connector on the rear panel of the
UPS, and connect the other end to any battery port on the rear panel of the battery cabinet.
4. Switch On the battery breaker on the rear of the external battery cabinet.
5. Use the Configuration Program included with the UPS to specify the number of external battery
cabinets connected to the Liebert GXT3. See Table 15 for approximate battery run times.
NOTE
Up to four external battery cabinets can be connected to the Liebert GXT3. Each cabinet will
increase the battery recharge time.
NOTE
Ensure that all the loads are turned Off.
Prepare an input power supply that is properly protected by a circuit breaker in accordance
with national and local electrical codes. The wall receptacle must be grounded.
Emerson
®
recommends installing an upstream circuit breaker of the same series as the Liebert
GXT3’s input circuit breaker. The upstream breaker should have a higher capacity than the
UPS input circuit breaker.
Table 2 Specification of input circuit breaker
Model
Rated Circuit
Breaker
GXT3-700RT230 10A
GXT3-1000RT230 10A
GXT3-1500RT230 10A
GXT3-2000RT230 16A
GXT3-3000RT230 16A
NOTE
1. Do not overload any one output receptacle.
2. Output cable length should not exceed 10m (32.8 ft).