Emerson GXT2-PP20KRT208 user manual Initial Startup and Electrical Checks

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Initial Startup and Electrical Checks

6.0INITIAL STARTUP AND ELECTRICAL CHECKS

This section includes the procedures on how to install the paralleling system for the first time and how to perform initial system checks of each UPS individually before connecting them in parallel.

NOTICE

Miswiring power to the input terminal block (L1-L2-N-G) may damage the UPS. For the initial installation, perform the following:

1.Verify that the input and output circuit breakers on UPS are Off (open). To find the circuit breakers, refer to the Liebert GXT2-10000RT208 user manual, SL-23444, available at the Liebert Web site, www.liebert.com

2.Verify that the parallel communication cables are disconnected from the parallel ports.

3.Verify that the UPS is completely Off.

4.Connect the UPS input power wires to the terminal block.

5.Connect the parallel POD utility main input. No load equipment should be connected at this time.

To start the initial electrical checks for each UPS:

1.Switch On (close) the UPS input and output breakers on the parallel POD of only the first UPS to be checked.

2.Measure the voltages of L1, L2, N, and G from the first UPS.

3.Switch On (close) the input and output circuit breakers, which are on the rear of the UPS.

4.Power on the UPS, and make sure it is operating normally.

Refer to the Liebert GXT2-10000RT208 user manual, SL-23444, for UPS operation.

5.Make sure the UPS output voltage is correct. If the output voltage of the UPS must be changed with the configuration program, it must be done now.

Refer to the Liebert GXT2-10000RT208 user manual, SL-23444, for help on using the configura- tion program.

6.Power Off the UPS, switch Off (open) the corresponding input and output breakers on the parallel POD and the Liebert GXT2-10000RT208 UPS.

7.Repeat the initial electrical checks on the second and third UPS to make sure each UPS in the paralleling system is operating normally and set for the same output voltage configuration.

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Contents Liebert GXT2-PP20KRT208 Page Table of Contents Specifications CommunicationImportant Safety Instructions Glossary of Symbols Introduction Redundancy Design Maintenance BypassCompatibility System DescriptionLiebert MultiLink Shutdown EthernetSystem Description Main Input / Output Terminal Blocks Input and Output Slots for UPSMajor Components Optional Power Distribution Parallel Communication PortWHAT’S Included Items shipped with Liebert GXT2-PP20KRT208What You Need Installation Mount the Liebert GXT2-PP20KRT208 in a Rack or on a WallMount the Liebert GXT2-PP20KRT208 on a Wall Paralleling System Connections Installation Main Input and Output Terminal Block Connections Electrical requirementsAdd an Output Power Distribution Module-Optional Parallel POD Main Electrical Connection-Must Be Installed O/P O/P I/P O/PInitial Startup and Electrical Checks Paralleling for Capacity ConfigurationParalleling for Capacity and Redundancy Operating Modes OperationBypass Mode Battery Test Fault ConditionParallel Communication Cable Disconnection Add a Single UPS to the Online Paralleling System Remove a Single UPS from the Paralleling SystemReplacing a Faulty Power Module or UPS Internal Battery Overload ConditionBattery Low Voltage-Battery Mode UPS Status Information Communication InterfaceCommunication Calculating total load per UPS UPS Configuration Settings Specifications Parallel POD specificationsOptional output distribution specifications-PD-201 Page Net
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