Emerson GXT2-PP20KRT208 User Manual
AC Power
For Business-Critical Continuity™
Liebert® GXT2-PP20KRT208
User Manual–Parallel POD for Liebert GXT2-10000RT208
™
TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAVE THESE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
GLOSSARY OF SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.0 SYSTEM DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.1 Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Redundancy Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Maintenance Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
™
2.4 Liebert MultiLink
3.0 MAJOR COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.1 Input and Output Slots for UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Main Input / Output Terminal Blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Maintenance Bypass Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4 UPS Input / Output Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.5 Parallel Communication Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.6 Optional Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.0 WHAT’S INCLUDED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4.1 What You Need. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.0 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.1 Mount the Liebert GXT2-PP20KRT208 in a Rack or on a Wall . . . . . . . . . . . . . . . . . . . . . . 11
5.1.1 Mount the Liebert GXT2-PP20KRT208 in a Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.1.2 Mount the Liebert GXT2-PP20KRT208 on a Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.2 Paralleling System Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.3 Main Input and Output Terminal Block Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.4 Add an Output Power Distribution Module—Optional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.5 Parallel POD Main Electrical Connection—Must Be Installed. . . . . . . . . . . . . . . . . . . . . . . 17
6.0 INITIAL STARTUP AND ELECTRICAL CHECKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
7.0 C
7.1 Paralleling for Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.2 Paralleling for Capacity and Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
ONFIGURATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
8.0 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
8.1 Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.1.1 Online Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.1.2 Bypass Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.1.3 Output Off Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.2 Fault Condition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.3 Battery Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.4 Parallel Communication Cable Disconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.5 Add a Single UPS to the Online Paralleling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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8.6 Remove a Single UPS from the Paralleling System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.7 Replacing a Faulty Power Module or UPS Internal Battery . . . . . . . . . . . . . . . . . . . . . . . . . 24
8.8 Overload Condition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8.9 Battery Low Voltage—Battery Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.0 COMMUNICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
9.1 Communication Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
9.2 UPS Status Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
9.3 UPS Configuration Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
10.0 SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
FIGURES
Figure 1 Paralleling system block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 2 Liebert MultiLink connection diagram for parallel POD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3 Configure Liebert MultiLink 1.5 for shutdown to work with a parallel system . . . . . . . . . . . . . . . 6
Figure 4 Liebert GXT2-PP20KRT208 components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 5 Optional output distribution modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 6 Items shipped with Liebert GXT2-PP20KRT208 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 7 Liebert GXT2-20KPC-6 components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 8 Secure the fixed brackets to the Liebert GXT2-PP20KRT208 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 9 Secure a parallel POD to a rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 10 Mount the Liebert GXT2-PP20KRT208 on a wall. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 11 Hardwire terminal connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 12 Secure the cover plate over the terminal connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 13 120A branch circuit breaker connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 14 Open the maintenance bypass breaker cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 15 Calculating total load per UPS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
TABLES
Table 1 Electrical requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 2 Maximum output power from paralleled UPSs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 3 Calculating total load, 20kVA example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 4 Calculating total load, 12kVA example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 5 Parallel POD specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 6 Paralleling cable kit dimensions and weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 7 Optional output distribution specifications—PD-201 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 8 Optional output distribution specifications—PD-202 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
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IMPORTANT SAFETY INSTRUCTIONS
!
WARNING
Risk of electric shock. Can cause equipment damage, injury or death.
Extreme caution is required when performing maintenance.
Service and maintenance work must be performed only by properly trained and qualified
personnel and in accordance with applicable regulations and manufacturers’ specifications.
Be constantly aware that the UPS system contains high DC voltages as well as high
AC voltages.
• Opening or removing the cover may expose personnel to lethal voltages within this unit
even when it is apparently not operating and the input wiring is disconnected from the electrical source.
• Observe all warnings and cautions in this manual. Failure to do so may result in serious
injury or death.
• Never work alone.
SAVE THESE INSTRUCTIONS
This manual contains important safety instructions pertaining to the Liebert GXT2-PP20KRT208, a
parallel power output device that will connect up to three Liebert GXT2-10000RT208 UPSs. Read all
safety, installation and operating instructions before operating the Liebert GXT2-PP20KRT208 parallel power output distribution (parallel POD). Adhere to all warnings on the unit and in this manual.
Follow all operating and user instructions. Individuals must fully understand this equipment to
install and operate it.
It is not intended for use with life support or other designated critical devices. Maximum load must
not exceed that shown on the Liebert GXT2-PP20KRT208 rating label. This parallel POD is designed
for use on a properly grounded (earthed), 100/200, 110/220, 115/230, 120/208, 120/240 or
127/220 VAC, 50Hz or 60Hz supply. Installation instructions and warning notices are found in this
manual.
This Liebert parallel POD is only for use with a four-wire input: L1, L2, N, G.
This Liebert parallel POD must NOT be used with a three-wire, single-phase utility source: L1, N, G.
ELECTROMAGNETIC COMPATIBILITY—The Liebert GXT2-PP20KRT208 complies with the
limits for a Class A digital device pursuant to Part 15 of FCC rules. Operation is subject to these conditions:
• This device may not be permitted to cause harmful interference.
• This device must accept any interference received, including interference that may cause undesired operation. Operating this device in a residential area is likely to cause harmful interference
that users must correct at their own expense.
Operate the parallel POD only in an indoor environment in an ambient temperature range of 32°F to
104°F (0°C to 40°C). Install it in a clean environment, free from conductive contaminants, moisture,
flammable liquids, gases and corrosive substances.
This parallel POD contains no user serviceable parts. Refer all faults to your local dealer, Liebert representative or the Emerson Network Power Liebert Worldwide Support Group.
Never block or insert any object into the ventilation holes or other openings of a UPS or this parallel
POD.
Do NOT connect equipment that could overload the parallel POD or demand half-wave rectification
from the parallel POD, for example: electric drills, vacuum cleaners, laser printers, hair dryers or any
other appliance using half-wave rectification.
Storing magnetic media on top of the UPS or parallel POD may result in data loss or corruption.
Turn the parallel POD and connected UPSs Off and isolate the paralleling system before cleaning;
use only a soft cloth, never liquid or aerosol cleaners.
1
GLOSSARY OF SYMBOLS
!
PbH2SO4
-
+
R
Risk of electrical shock
Indicates caution followed by important instructions
AC input
AC output
i
Suggests the user consult the manual
Indicates the presence of a valve-regulated lead acid battery
Recycle
DC voltage
Equipment grounding conductor
Bonded to ground
AC voltage
WEEE logo
2
1.0 INTRODUCTION
Congratulations on your choice of the Liebert GXT2-PP20KRT208 parallel POD. It allows parallel
connection of input and output up to three Liebert GXT2-10000RT208 UPSs.
The Liebert GXT2-PP20KRT208 parallel POD features an N+1 redundancy. While one Liebert
GXT2-10000RT208 UPS is available at 10kVA nominal power rating, connecting three UPSs in parallel provides 20kVA of output power, plus redundancy of one 10kVA UPS.
The Liebert GXT2-PP20KRT208 is a compact, parallel POD. A parallel POD continuously provides
conditioned power from connected Liebert GXT2-10000RT208 UPSs whether utility power is present
or not.
For ease and safety of installation, the Liebert GXT2-PP20KRT208 is designed with short-circuit protection and color-coded outlets for the UPS electrical connectors.
The Liebert GXT2-PP20KRT208 has three parallel ports to communicate with the UPSs.
Introduction
3
2.0 SYSTEM DESCRIPTION
UPS1 UPS3
Output Breaker
Parallel Signal
Board
Optional POD
Load
Utility
Terminal Bloc k
of POD
(Output )
O/P Breaker
UPS2
Output Breaker Output Breaker
Terminal Bloc k
of POD
(Main Input )
Branch Breaker
Input Breaker Input B reakerInput B reaker
2.1 Compatibility
The Liebert GXT2-PP20KRT208 parallel POD is compatible only with the Liebert GXT2-10000RT208
UPS. No more than three Liebert GXT2-10000RT208 UPSs can be connected to the parallel POD.
2.2 Redundancy Design
During normal operation with parallel connection of three Liebert GXT2-10000RT208 UPSs, the parallel POD supplies 20kVA of output power plus redundancy of one 10kVA UPS. With the Liebert
GXT2-PP20KRT208 N+1 redundancy design, the failure of one UPS will not affect the functioning of
the overall system.
2.3 Maintenance Bypass
When the UPS system must be completely shut down, maintenance bypass allows the parallel POD to
work in the normal operation without interrupting power to the load. As shown in Figure 1, the Liebert GXT2-PP20KRT208 provides an alternate path for utility power to the connected load. In the
event that the UPS experiences a failure, the UPS battery runs out or any other condition occurs
requiring maintenance on the UPS, the user may manually transfer the connected load from the
inverter to bypass by switching the maintenance bypass breaker to the On position.
System Description
Figure 1 Paralleling system block diagram
4
2.4 Liebert MultiLink™ Shutdown
Computer With
Liebert
MultiLink Agent
UPS 1
SNMP
Parallel
Port
Liebert
GXT2-PP20KRT208
Parallel POD
Parallel
Port
UPS 2
SNMP
Par allel
Port
UPS 3
SNMP
Parallel
Port
Ethernet
The parallel POD supports the orderly shutdown of computer operating system through its compatibility with Liebert MultiLink 1.5 software. When properly configured to operate with Liebert MultiLink 1.5, the parallel POD will operate as a complete system; On Battery and Low Battery events
will not be sent from the UPS when it is operating in redundant mode and the remaining UPS is able
to support the total load.
System Description
For the paralleling system to work properly with Liebert MultiLink 1.5, each connected 10kVA UPS
must have an SNMP card properly installed and configured in the Liebert IntelliSlot
MultiLink 1.5 will not work properly with the parallel system through the serial port connection.
Figure 2 Liebert MultiLink connection diagram for parallel POD
®
bay. Liebert
The SNMP card must be properly configured with an IP ADDRESS, NETMASK and GATEWAY.
Refer to the SNMP card user manual for detailed instructions. The SNMP card must also be configured with a community string to be monitored by Liebert MultiLink. For details, refer to the Liebert
MultiLink 1.5 user manual, SL-53620, available at the Liebert Web site, www.liebert.com
Liebert MultiLink 1.5 also must be properly configured for the software shutdown to work properly
with the parallel system. Refer to the Liebert MultiLink 1.5 user manual for detailed configuration
instructions. Two important settings required for Liebert MultiLink shutdown to work properly are:
• The connection option “Liebert UPS (using SNMP port 162)” must be selected, either during
installation or later (see Figure 3; refer to the MultiLink 1.5 user manual, SL-53620, for details).
• The options “Enable shutdown after an on-battery event” and “Enable shutdown after a low-battery event” must be selected for Liebert MultiLink to initiate shutdown when either of these
events occur (see Figure 3; refer to the MultiLink 1.5 user manual, SL-53620, for details).
5
Figure 3 Configure Liebert MultiLink 1.5 for shutdown to work with a parallel system
Select this option either
while installing the
software or later
through the connection
options
Enable
shutdown ...
... for these events
System Description
6
3.0 MAJOR COMPONENTS
Input and Output Slots for UPS
Maintenance
Bypass
Breaker
UPS Input / Output
Circuit Breakers
Main Input / Output
Terminal Blocks
Parallel
Communication
Ports
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
Major Components
3.1 Input 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.
3.2 Main 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.
3.3 Maintenance 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
3.4 UPS 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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