Emerson GXT2-PP20KRT208 Input and Output Slots for UPS, Main Input / Output Terminal Blocks

Major Components

3.0MAJOR COMPONENTS

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

Figure 4 Liebert GXT2-PP20KRT208 components

Main Input / Output

Terminal Blocks

UPS Input / Output Circuit Breakers

Parallel

Communication

Ports

Maintenance

Bypass

Breaker

Input and Output Slots for UPS

3.1Input and Output Slots for 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.

3.2Main Input / Output Terminal Blocks

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.

3.3Maintenance Bypass Breaker

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, www.liebert.com

3.4UPS Input / Output Circuit Breakers

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.

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