Emerson GXT2-PP20KRT208 Manuel D’Utilisation

The Liebert GXT2-PP20KRT208 has five main components (see Figure 4):

• UPS input / output circuit breakers
• Main input / output terminal blocks
• Parallel communication ports
• Maintenance bypass breaker
• Input and output slots for each UPS

The parallel POD is shipped with three input/output slots for hardwire connections with the UPSs. 

The eight-pole connector with color coding and keying are used for the interconnecting wires between 

UPS input and output. The UPS connector will snap into the connector of the parallel POD only in the 

correct direction and only with the same color.

Hardwire terminal blocks are at the top left corner on the front side of the parallel POD. Input and 

output wiring should not share the same conduit. See the requirements and label in 5.3 - Main Input 

and Output Terminal Block Connections to connect the wires.

The Maintenance Bypass Breaker allows the user to transfer the load to utility to remove a UPS from 

the paralleling system for maintenance without shutting off power to the load (see 8.1.2 - Bypass 

Mode) for the transfer procedure). For further information on the UPS Maintenance Bypass Breaker, 

refer to the Liebert GXT2-10000RT208 user manual, SL-23444, available at the Liebert Web site, 

The Liebert GXT2-PP20KRT208 is equipped with six circuit breakers (three input breakers and three 

output breakers). During normal operation in the paralleling system, input/output circuit breakers 

are in the On position. When installing or removing a UPS, the corresponding breakers should be 

switched to the Off position.