Emerson GXT2-PP20KRT208 user manual Parallel POD Main Electrical Connection-Must Be Installed

Page 21

Installation

5.5Parallel POD Main Electrical Connection—Must Be Installed

Electrical connections are made through a removable conduit box that attaches to the top of the paral- lel POD.

A branch breaker is required for short circuit or overcurrent protection. The installer must provide a 120A (@ 208V to 240V) branch circuit breaker. If the paralleling system detects any UPS with short circuit or overcurrent, the input circuit breaker and the output circuit breaker on the rear fixed-panel of the UPS will disconnect all power between the main cabinet and the distribution box.

The manual bypass breaker passes utility power directly to the bypass switch from the input terminal block. The three UPS input circuit breakers on the POD do not disconnect power from the manual bypass breaker.

Figure 13 120A branch circuit breaker connection

UPS1

UPS2

UPS3

63A Input and

I/P O/P

I/P O/P I/P O/P

Optional

 

 

 

Output

 

Output Circuit

 

 

Distribution

 

Breakers

 

 

Module

 

Input

 

 

 

 

Utility

 

 

 

 

120 A External

 

Maintenance

 

 

Branch Circuit

 

Breaker

Output

 

Breaker

Main I/P

 

 

 

 

 

 

 

Terminal Block

 

Main O/P Terminal Block

Load

 

 

 

100 A External

 

 

 

 

 

 

 

Circuit Breaker

 

! WARNING

Risk of electrical shock and fire. May cause equipment damage, personal injury and death.

A disconnect switch for the AC input circuit must be field-supplied. To reduce the risk of fire, connect the disconnect switch only to a circuit provided with branch circuit overcurrent protection for 120A rating in accordance with the National Electric Code, ANSI/NFPA 70.

! WARNING

Risk of electrical shock and fire. May cause equipment damage, personal injury and death.

A disconnect switch for the AC output circuit must be field-supplied. To reduce the risk of fire, connect the disconnect switch only to a circuit provided with branch circuit overcurrent protection for 100A rating in accordance with the National Electric Code, ANSI/NFPA 70.

17

Image 21
Contents Liebert GXT2-PP20KRT208 Page Table of Contents Communication SpecificationsImportant Safety Instructions Glossary of Symbols Introduction Compatibility Maintenance BypassRedundancy Design System DescriptionEthernet Liebert MultiLink ShutdownSystem Description Input and Output Slots for UPS Main Input / Output Terminal BlocksMajor Components Parallel Communication Port Optional Power DistributionItems shipped with Liebert GXT2-PP20KRT208 WHAT’S IncludedWhat You Need Mount the Liebert GXT2-PP20KRT208 in a Rack or on a Wall InstallationMount the Liebert GXT2-PP20KRT208 on a Wall Paralleling System Connections Installation Electrical requirements Main Input and Output Terminal Block ConnectionsAdd an Output Power Distribution Module-Optional O/P O/P I/P O/P Parallel POD Main Electrical Connection-Must Be InstalledInitial Startup and Electrical Checks Configuration Paralleling for CapacityParalleling for Capacity and Redundancy Operation Operating ModesBypass Mode Fault Condition Battery TestParallel Communication Cable Disconnection Remove a Single UPS from the Paralleling System Add a Single UPS to the Online Paralleling SystemOverload Condition Replacing a Faulty Power Module or UPS Internal BatteryBattery Low Voltage-Battery Mode Communication Interface UPS Status InformationCommunication Calculating total load per UPS UPS Configuration Settings Parallel POD specifications SpecificationsOptional output distribution specifications-PD-201 Page Net