Liebert®NXL™ Power-tie Controls
Installation Manual
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TABLE OF CONTENTSIMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.0 MECHANICAL INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.2 Preliminary Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.0 CONTROL CONNECTIONS AND COMMUNICATION . . . . . . . . . . . . . . . . . . . .42.1 Control Cable and Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1.1 Programmable Relay Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.2 Inter-Module Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.0 INSTALLATION DRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144.0 SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
FIGURESFigure 1 External Interface Board connections layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Figure 2 Breaker Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Figure 3 Voltage and Current Sensing Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Figure 4 Control wiring, Programmable Relay Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Figure 5 Programmable relay board dialog box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Figure 6 Control wiring layout for Liebert NXL Power-Tie . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Figure 7 Liebert NXL Power-Tie System #1 layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Figure 8 Liebert NXL Power-Tie System #2 or #3 layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Figure 9 Liebert NXL Power-Tie control wiring for single system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
TABLESTable 1 Programmable Relay Board pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Table 2 Cable group #22A - from SIB breaker interface board (BIB) to SIB breaker . . . . . . . . . . 7Table 3 Cable group #22B - from SIB breaker interface board (BIB) to breaker motor operator
(optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Table 4 Cable group #23A - from tie breaker interface board (BIB) to tie breaker. . . . . . . . . . . . 7Table 5 Cable group #23B - from tie breaker interface board (BIB) to breaker motor operator
(optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Table 6 Cable group #24A - from MBB breaker interface board (BIB) to MBB breaker . . . . . . . 7Table 7 Cable group #24B - from MBB breaker interface board (BIB) to breaker motor opera-
tor (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 8 Cable group #25A - from MIB breaker interface board (BIB) to MIB breaker . . . . . . . . . 8Table 9 Cable group #25B - from MIB breaker interface board (BIB) to breaker motor operator
(optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Table 10 Cable group #26A - from LBB breaker interface board (BIB) to LBB breaker . . . . . . . . 8Table 11 Cable group #27A - parallel from SCC/UPS inter-module communication board to
Liebert NXL Power-Tie inter-module communication board . . . . . . . . . . . . . . . . . . . . . . . . . 8Table 12 Cable group #27B - redundant parallel from SCC/UPS inter-module communication
board to Liebert NXL Power-Tie inter-module communication board . . . . . . . . . . . . . . . 9
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Table 13 Cable group #28A - parallel from Liebert NXL Power-Tie inter-module communica-tion board to next Liebert NXL Power-Tie inter-module communication board . . . . . . . . . . 9
Table 14 Cable group #28B - redundant parallel Liebert NXL Power-Tie inter-module communication board to next Liebert NXL Power-Tie inter-module communication board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 15 Cable group #29A - from MBB breaker interface board to SKRU interface . . . . . . . . . . 9Table 16 Cable group #29B - from MBB breaker interface board to SKRU interface. . . . . . . . . . . 9Table 17 Cable group #32 - from Liebert NXL Power-Tie control terminal block to voltage and
current sense points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Table 18 Liebert NXL Power-Tie Control specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
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IMPORTANT SAFETY INSTRUCTIONSSAVE THESE INSTRUCTIONSThis manual contains important instructions that should be followed during installation of your Liebert NXL Power-Tie Controls. Read this manual thoroughly, paying special attention to the sections that apply to your installation, before working with the unit. Retain this manual for use by installing personnel.
NOTICEThis unit complies with the limits for a Class A digital device, pursuant to Part 15 Subpart J of the FCC rules. These limits provide reasonable protection against harmful interference in a commercial environment. This unit generates, uses and radiates radio frequency energy and, if not installed and used in accordance with this instruction manual, may cause harmful interference to radio communications.
WARNINGRisk of electrical shock. Can cause personal injury or death.Only properly trained and qualified personnel wearing appropriate safety headgear, gloves, shoes and glasses should be involved in installing the modules or preparing the modules for installation. When performing maintenance with any part of the equipment under power, service personnel and test equipment should be standing on rubber mats.In case of fire involving electrical equipment, use only carbon dioxide fire extinguishers or those approved for use in fighting electrical fires.Extreme caution is required when performing installation and maintenance.Special safety precautions are required for procedures involving handling, installation and maintenance of the UPS system. Observe all safety precautions in this manual before handling or installing the module. Observe all precautions in the Operation and Maintenance Manual before as well as during performance of all maintenance procedures.
WARNINGRisk of electrical shock and fire. Can cause equipment damage, personal injury or death.
Under typical operation and with all doors closed, only normal safety precautions are necessary. The area around the system should be kept free of puddles of water, excess moisture and debris.
Only test equipment designed for troubleshooting should be used. This is particularly true for oscilloscopes. Always check with an AC voltmeter to ensure safety before making contact or using tools. Even when the power is turned Off, dangerously high potential electric charges may exist at the capacitor banks.
All wiring must be installed by a properly trained and qualified electrician. All power and control wiring must comply with all applicable national, state and local codes.
One person should never work alone, even if all power is disconnected from the equipment. A second person should be standing by to assist and to summon help in case of an accident.
NOTEMaterials sold hereunder cannot be used in the patient vicinity (e.g., use where UL, cUL or IEC 60601-1 is required). Medical applications, such as invasive procedures and electrical life-support equipment, are subject to additional terms and conditions.
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Operation of this unit in a residential area may cause harmful interference that the user must correct at his own expense.
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1.0 MECHANICAL INSTALLATION
1.1 IntroductionThe Liebert NXL Switchgear provides continuous, high-quality AC power to your business-critical equipment, such as telecommunication and data processing equipment. Liebert NXL UPS’s will supply power that is free of the disturbances and variations in voltage and frequency common to utility power, which is subject to brownouts, blackouts, surges and sags.The Liebert NXL Power-Tie system provides manually initiated, uninterrupted transfers of a critical load bus between the two UPS systems.This topology permits one UPS and its associated distribution system to be shut down for maintenance while the load continues to be supplied by another UPS, without the necessity of transferring the load to bypass during shutdown or restart of the UPS being maintained.
1.2 Preliminary ChecksThis chapter is a guide to general procedures and practices that should be observed by the installing personnel. The particular conditions of each site will determine the applicability of such procedures.Before installing the Liebert NXL Power-Tie, make these preliminary checks:
• Examine the Liebert NXL Power-Tie for transit damage, both internally and externally. Report any damage to the shipper immediately.
• Verify that the correct equipment is being installed. The Liebert NXL Power-Tie cabinet has an identification tag on the interior doors listing the type, size and main calibration parameters of the UPS.
• Verify that the UPS room satisfies the environmental conditions stipulated in the equipment specification, paying particular attention to the ambient temperature and air exchange system.
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2.0 CONTROL CONNECTIONS AND COMMUNICATION
2.1 Control Cable and CommunicationFigure 1 External Interface Board connections layout
P66C P99C
TB0823
EPOSTATUS
TB0829
EXTERNALCAN
TB1154B TB1154A
TB0825
TB0824TB0826
TB0820 TB0818
TB0817
TB0819
TB0816
TB0830
TB035TB0821
P0801
TB0811
TB0810
TB0813
TB0812
TB0815
P0832P0831
P0808
OPTPS
INT BATTCAN
EXT BATT CAN
REPOJ4
REPOFORM C
LBS VOLTAGE
EXTERNALCAN MOB
MIB
RIB
MBB
BIB
KEY STATUS
INV CNTRLN
RECT CNTL
BYP CNTL
ON GEN
ACT FILTSTATUS
BATT GNDFLT
ACT FILTCNTL
MAINT BYPENABLE
AUX SPARETEMP
J5
BATT MTR OP
TB1156
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Figure 2 Breaker Interface Board
TB
11
58
TB
11
54
1
2
3
4
5
1
2
3
4
5
6
7T
B1
15
0T
B1
15
1
1 2P 1155
1
2
3
4
1
2
3
4
5
6
7
8
BIB
CAUTION:HAZARDOUS VOLTAGES
TB
11
23
1
2
BREAKERINTERFACE BOARD
Form-C Aux Contacts
48VDC Shunt Trip
Optional Motor Operator
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Figure 3 Voltage and Current Sensing Terminal
TB1
TB2
TB3
TB4
TB5
TB6
TB19
TB20
TB21
TB22
TB23
TB24
TB25
TB26
TB27
TB28
TB29
TB30
TB31
TB32
TB33
TB34
TB35
TB36
TB37
TB38
TB7
TB8
TB9
TB10
TB11
TB12
TB13
TB14
TB15
TB16
TB17
TB18
1
1
1
1
Future
NOTES:
1. TB1–TB6 are shorting switches. During normal operation , these devices are open . When button is depressed and turned 90˚ (locked position) the associated CT is shorted. Reference Table “CT SHORTING TABLE” on this sheet.
2. TB19-TB38 are disconnect devices . During normal operation these devices are closed. All external wiring into TB 19-TB38 must be fused at the source.
TIE Bus Voltage, Phase A
UPS Source Power Supply, Phase A
Critical Load Bus, Phase A CT X1
Critical Load Bus, Phase A CT X2
Critical Load Bus, Phase B CT X1
Critical Load Bus, Phase B CT X2
Critical Load Bus, Phase C CT X1
Critical Load Bus, Phase C CT X2
CT SHORTING TABLE
TB1TB2TB3TB4TB5TB6
TB# SHORTS CT
LOAD I PHALOAD I PHBLOAD I PHCUPS I PHAUPS I PHBUPS I PHC
F1
8AF2
8AF3
8AF4
8AF5
8AF6
8A
UPS Source, Phase A CT X1
UPS Source, Phase A CT X2
UPS Source, Phase B CT X1
UPS Source, Phase B CT X2
UPS Source, Phase C CT X1
UPS Source, Phase C CT X2
TIE Bus Voltage, Phase B
TIE Bus Voltage, Phase C
Neutral
Critical Load Bus Voltage, Phase A
Critical Load Bus Voltage, Phase B
Critical Load Bus Voltage, Phase C
Neutral
Bypass Source Voltage, Phase A
Bypass Source Voltage, Phase B
Bypass Source Voltage, Phase C
Neutral
UPS Source Voltage, Phase A
UPS Source Voltage, Phase B
UPS Source Voltage, Phase C
Neutral
Future
Future
Future
UPS Source Power Supply, Phase B
Bypass Source Power Supply, Phase A
Bypass Source Power Supply, Phase B
Optional Power Supply
Optional Power Supply
CAUTION:TB19–TB38 and F1-F6 connected to
HAZARDOUS VOLTAGES
Note 1
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2.1.1 Programmable Relay BoardThe Programmable Relay Board (PRB) provides a means to trigger an external device when an event occurs in the Liebert NXL. Each PRB has eight channels. Each channel has Form-C dry contacts rated at 1A @ 30VDC or 125VAC @ 0.45A.Any alarm/event can be programmed to any channel or channels. Up to four (4) events can be programmed to a relay. If multiple events are grouped to one relay, any of the events becoming active will activate the channel. The same alarm/event can be programmed to more than one channel. Up to two Programmable Relay Boards can be installed in the Liebert NXL for a total of 16 channels. Programming is performed through the HMI touchscreen display.
Figure 4 Control wiring, Programmable Relay Board
NOTEUp to two PRB’s can be installed in a Liebert NXL.
Table 1 Programmable Relay Board pinoutTermin
alBlock Channel Pin No. Common
NormallyClosed
NormallyOpen
J71
CH1 1-3 1 2 3
CH2 4-6 4 5 6
CH3 7-9 7 8 9
CH4 10-12 10 11 12
J72
CH5 1-3 1 2 3
CH6 4-6 4 5 6
CH7 7-9 7 8 9
CH8 10-12 10 11 12
P99J71
J72P66
1 2 3 4 5 76 8 9 10 11 12
1 2 3 4 5 76 8 9 1011 12
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Configuring the Programmable Relay Board Settings1. Press Internal Option Settings from the Config menu.2. Press which Programmable Relay Board will be configured. The Programmable Relay Board dialog box is
displayed.3. Press the Relay channel4. Press up to four events. Selected events will show up under Relay 1 Assignment.
5. Repeat Steps 3 and 4 for each relay.6. Press SAVE to keep the settings.
Figure 5 Programmable relay board dialog box
• Assignment—0 to 4 event (default: 0)• Delay, sec—0 to 99.9 (default: 0)
NOTETo deselect an event, click on the event.
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2.2 Inter-Module Control Wiring
NOTEUnless otherwise noted, use copper or aluminum conductors suitable for at least 75°C.
Table 2 Cable group #22A - from SIB breaker interface board (BIB) to SIB breakerTerminal Designation
Signal NameMaximum
LengthFrom To
TB1150-1
Remote Breaker Contacts
SIB AUX CONTACT COMMON
#14-22AWG500FT (150m)
TB1150-2 SIB AUX CONTACT, CLOSED = CB IS OPEN
TB1150-3 SIB AUX CONTACT, CLOSED = CB IS CLOSED
TB1150-4 SIB 48VDC TRIP COIL (-)
TB1150-5 SIB 48VDC TRIP COIL (+)
Table 3 Cable group #22B - from SIB breaker interface board (BIB) to breaker motor operator (optional)Terminal Designation
Signal Name MaximumLengthFrom To
TB1151-1 Remote Breaker Motor Operator
Contacts
AC LINE #14-22AWG500FT (150m)TB1151-5 MOTOR OPERATOR CLOSE
Table 4 Cable group #23A - from tie breaker interface board (BIB) to tie breakerTerminal Designation
Signal Name MaximumLengthFrom To
TB1150-1
Remote Breaker Contacts
TIE AUX CONTACT COMMON
#14-22AWG500FT (150m)
TB1150-2 TIE AUX CONTACT, CLOSED = CB IS OPEN
TB1150-3 TIE AUX CONTACT, CLOSED = CB IS CLOSED
TB1150-4 TIE 48VDC TRIP COIL (-)
TB1150-5 TIE 48VDC TRIP COIL (+)
Table 5 Cable group #23B - from tie breaker interface board (BIB) to breaker motor operator (optional)Terminal Designation
Signal Name MaximumLengthFrom To
TB1151-1 Remote Breaker Motor
Operator Contacts
AC LINE#14-22AWG
500FT (150m)TB1151-5 MOTOR OPERATOR CLOSE
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Table 6 Cable group #24A - from MBB breaker interface board (BIB) to MBB breakerTerminal Designation
Signal Name MaximumLengthFrom To
TB1150-1
Remote Breaker
Contacts
MBB AUX CONTACT COMMON
#14-22AWG500FT (150m)
TB1150-2 MBB AUX CONTACT, CLOSED = CB IS OPEN
TB1150-3 MBB AUX CONTACT, CLOSED = CB IS CLOSED
TB1150-4 MBB 48VDC TRIP COIL (-)
TB1150-5 MBB 48VDC TRIP COIL (+)
Table 7 Cable group #24B - from MBB breaker interface board (BIB) to breaker motor operator (optional)Terminal Designation
Signal Name MaximumLengthFrom To
TB1151-1 Remote Breaker MotorOperator Contacts
AC LINE #14-22AWG500FT (150m)TB1151-5 MOTOR OPERATOR CLOSE
Table 8 Cable group #25A - from MIB breaker interface board (BIB) to MIB breakerTerminal Designation
Signal Name MaximumLengthFrom To
TB1150-1
Remote Breaker Contacts
MIB AUX CONTACT COMMON
#14-22AWG500FT (150m)
TB1150-2 MIB AUX CONTACT, CLOSED = CB IS OPEN
TB1150-3 MIB AUX CONTACT, CLOSED = CB IS CLOSED
TB1150-4 MIB 48VDC TRIP COIL (-)
TB1150-5 MIB 48VDC TRIP COIL (+)
Table 9 Cable group #25B - from MIB breaker interface board (BIB) to breaker motor operator (optional)Terminal Designation
Signal Name MaximumLengthFrom To
TB1151-1 Remote Breaker Motor Operator Contacts
AC LINE #14-22AWG500FT (150m)TB1151-5 MOTOR OPERATOR CLOSE
Table 10 Cable group #26A - from LBB breaker interface board (BIB) to LBB breakerTerminal Designation
Signal Name MaximumLengthFrom To
TB1150-1Remote Breaker
Contacts
LBB AUX CONTACT COMMON#14-22AWG
500FT (150m)TB1150-2 LBB AUX CONTACT, CLOSED = CB IS OPEN
TB1150-3 LBB AUX CONTACT, CLOSED = CB IS CLOSED
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Table 11 Cable group #27A - parallel from SCC/UPS inter-module communication board to Liebert NXL Power-Tie inter-module communication board
Terminal DesignationSignal Name Maximum
LengthFrom To
P3101-3 P3101-3 SYSTEM CAN +24V
#18AWG1000FT (300m)
P3101-4 P3101-4 SYSTEM CAN COMMON
P3101-7 P3101-7 GROUND
P3101-14 P3101-14 GROUND
P3101-12 P3101-12 LBS SYNCH CAN +24V
P3101-13 P3101-13 LBS SYNCH CAN COMMONNote: Must use Belden 8106 or (3) Belden 8102; outer shield drain wire must be connected to pins 7 and 14 at each connector.
Table 12 Cable group #27B - redundant parallel from SCC/UPS inter-module communication board to Liebert NXL Power-Tie inter-module communication board
Terminal DesignationSignal Name Maximum
LengthFrom To
P3103-3 P3103-3 REDUNDANT SYSTEM CAN +24V
#18AWG1000FT (300m)
P3103-4 P3103-4 REDUNDANT SYSTEM CAN COMMONP3103-7 P3103-7 GROUND
P3103-14 P3103-14 GROUNDP3103-12 P3103-12 REDUNDANT LBS SYNCH CAN +24VP3103-13 P3103-13 REDUNDANT LBS SYNCH CAN COMMON
Note: Must use Belden 8106 or (3) Belden 8102; outer shield drain wire must be connected to pins 7 and 14 at each connector.
Table 13 Cable group #28A - parallel from Liebert NXL Power-Tie inter-module communication board to next Liebert NXL Power-Tie inter-module communication board
Terminal DesignationSignal Name Maximum
LengthFrom To
P3101-1 P3101-1 SHARE CAN +24V
#18AWG1000FT (300m)
P3101-2 P3101-2 SHARE CAN COMMONP3101-7 P3101-7 GROUND
P3101-14 P3101-14 GROUNDP3101-8 P3101-8 PWM SYNCH CAN +24VP3101-9 P3101-9 PWM SYNCH CAN COMMON
Note: Must use Belden 8106 or (3) Belden 8102; outer shield drain wire must be connected to pins 7 and 14 at each connector.
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Table 14 Cable group #28B - redundant parallel Liebert NXL Power-Tie inter-module communication board to next Liebert NXL Power-Tie inter-module communication board
Terminal DesignationSignal Name Maximum
LengthFrom To
P3103-3 P3103-3 SHARE CAN +24V
#18AWG1000FT (300m)
P3103-4 P3103-4 SHARE CAN COMMONP3103-7 P3103-7 GROUND
P3103-14 P3103-14 GROUNDP3103-12 P3103-12 PWM SYNCH CAN +24VP3103-13 P3103-13 PWM SYNCH CAN COMMON
Note: Must use Belden 8106 or (3) Belden 8102; outer shield drain wire must be connected to pins 7 and 14 at each connector.
Table 15 Cable group #29A - from MBB breaker interface board to SKRU interfaceTerminal Designation
Signal Name MaximumLengthFrom To
TB1158-6SKRU
CONTACTS
KEY STATUS SWITCH, CLOSED = KEY RELEASED#14-22AWG
500FT (150m)TB1158-4 KEY STATUS SWITCH, COMMON
TB1158-5 KEY STATUS SWITCH, CLOSED = KEY CAPTIVE
Table 16 Cable group #29B - from MBB breaker interface board to SKRU interfaceTerminal Designation
Signal Name MaximumLengthFrom To
TB1151-1 SKRU CONTACTS
CLOSED = ENABLE SKRU #14-22AWG164FT (50m)TB1151-5 MAINTENANCE BYPASS CABINET, COMMON
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Table 17 Cable group #32 - from Liebert NXL Power-Tie control terminal block to voltage and current sense points
Terminal DesignationSignal Name Maximum
LengthFrom To
TB7
VOLTAGE & CURRENT
SENSE POINTS
Critical Load Bus, Phase A CT X1
22-12AWG/500FT (150m)
TB8 Critical Load Bus, Phase A CT X2
TB9 Critical Load Bus, Phase B CT X1
TB10 Critical Load Bus, Phase B CT X2
TB11 Critical Load Bus, Phase C CT X1
TB12 Critical Load Bus, Phase C CT X2
TB13 UPS SOURCE, Phase A CT X1
TB14 UPS SOURCE, Phase A CT X2
TB15 UPS SOURCE, Phase B CT X1
TB16 UPS SOURCE, Phase B CT X2
TB17 UPS SOURCE, Phase C CT X1
TB18 UPS SOURCE, Phase C CT X2
TB19 TIE BUS VOLTAGE, PHASE A
TB20 TIE BUS VOLTAGE, PHASE B
TB21 TIE BUS VOLTAGE, PHASE C
TB22 NEUTRAL
TB23 CRITICAL LOAD BUS VOLTAGE, PHASE A
TB24 CRITICAL LOAD BUS VOLTAGE, PHASE B
TB25 CRITICAL LOAD BUS VOLTAGE, PHASE C
TB26 NEUTRAL
TB27 BYPASS SOURCE VOLTAGE, PHASE A
TB28 BYPASS SOURCE VOLTAGE, PHASE B
TB29 BYPASS SOURCE VOLTAGE, PHASE C
TB30 NEUTRAL
TB31 FUTURE
TB32 FUTURE
TB33 FUTURE
TB34 FUTURE
TB35 UPS SOURCE VOLTAGE, PHASE A
TB36 UPS SOURCE VOLTAGE, PHASE B
TB37 UPS SOURCE VOLTAGE, PHASE C
TB38 NEUTRAL
F1 UPS Source Power Supply, Phase A
F2 UPS Source Power Supply, Phase B
F3 Bypass Source Power Supply, Phase A
F4 Bypass Source Power Supply, Phase B
F5 Optional Power Supply
F6 Optional Power Supply
Vertiv™ | Liebert® NXL™ Power-Tie Controls | 13
3.0 INSTALLATION DRAWINGSFigure 6 Control wiring layout for Liebert NXL Power-Tie
Power Tie 1Controls
Power Tie 2Controls
System #1
CG # 22
CG # 23
CG # 26
CG # 27
CG # 24
CG # 25
CG # 29
System #2
CG # 22
CG # 23
CG # 26
CG # 27
CG # 24
CG # 25
CG # 29
CG
#2
8
Power Tie 3Controls
System #3
CG # 22
CG # 23
CG # 26
CG # 27
CG # 24
CG # 25
CG # 29
CG
#28
CG #1REPO
CG # 32
CG # 32
CG # 32
Vertiv™ | Liebert® NXL™ Power-Tie Controls | 14
Figure 7 Liebert NXL Power-Tie System #1 layout
539652Page 1, Rev. 3
Breaker InterfaceBoard (SIB)
Breaker InterfaceBoard (Tie)
Breaker InterfaceBoard (MBB, Optional)
Breaker InterfaceBoard (MIB, Optional)
Breaker InterfaceBoard (LBB, Optional)
Voltage andCurrent SensorTerminal Blocks
HighVoltage(External)
High Voltage (External)
High Voltage (External)
To AssociatedSM/MM System
To AssociatedSM/MM System
To AssociatedSM/MM System
Low Voltage (External)
Low Voltage(External)
ExternalInterfaceBoard(EIB
Option Box
LiebertIntellislotPorts
TOP VIEW BOTTOM VIEW
FRONT VIEW
Vertiv™ | Liebert® NXL™ Power-Tie Controls | 15
Figure 8 Liebert NXL Power-Tie System #2 or #3 layout
539652Pg. 02, Rev. 03
Breaker InterfaceBoard (SIB)
Breaker InterfaceBoard (Tie)
Breaker InterfaceBoard (MBB, Optional)Breaker InterfaceBoard (MIB, Optional)
Breaker InterfaceBoard (LBB, Optional)
Voltage andCurrent SensorTerminal Blocks
HighVoltage(External)
High Voltage (External)
High Voltage (External) To Associated
SM/MM System
To AssociatedSM/MM System
To AssociatedSM/MM System
Low Voltage (External)
Low Voltage(External)
TOP VIEW BOTTOM VIEW
FRONT VIEW
Option Box
Vertiv™ | Liebert® NXL™ Power-Tie Controls | 16
Figure 9 Liebert NXL Power-Tie control wiring for single system
ST
48
VD
C
SIB
SY
ST
EM
ISO
LA
TIO
N
BR
EA
KE
R
CL
OS
EC
OIL
120
VA
C
CLO
SE
SH
UN
T T
RIP
SH
UN
T T
RIP
ST
48
VD
C
MB
B
MA
INT
EN
AN
CE
IS
OLA
TIO
N
BR
EA
KE
R
CL
OS
EC
OIL
120
VA
C
CLO
SE
SH
UN
T T
RIP
SH
UN
T T
RIP
ST
48
VD
C
MA
INT
EN
AN
CE
BY
PA
SS
BR
EA
KE
R
CL
OS
EC
OIL
120
VA
C
CLO
SE
SH
UN
T T
RIP
SH
UN
T T
RIP
ST
48V
DC
TIE
TIE
B
RE
AK
ER
CL
OS
EC
OIL
120
VA
C
CL
OS
E
SH
UN
T T
RIP
SH
UN
T T
RIP
ST
48V
DC
LB
B
LOA
D B
AN
K B
RE
AK
ER
CL
OS
EC
OIL
120
VA
C
CL
OS
E
SH
UN
T T
RIP
SH
UN
T T
RIP
BY
PA
SS
SO
UR
CE
, Φ
A
BY
PA
SS
SO
UR
CE
, Φ
B
BY
PA
SS
SO
UR
CE
, Φ
C
NE
UT
RA
L
UP
S S
OU
RC
E, Φ
A
UP
S S
OU
RC
E, Φ
B
UP
S S
OU
RC
E, Φ
C
NE
UT
RA
L
LO
AD
BA
NK
, ΦA
LO
AD
BA
NK
, ΦB
LO
AD
BA
NK
, ΦC
NE
UT
RA
L
TIE
BU
S, Φ
A
TIE
BU
S, Φ
B
TIE
BU
S, Φ
C
NE
UT
RA
L
CR
ITIC
AL
LO
AD
BU
S, Φ
A
CR
ITIC
AL
LO
AD
BU
S, Φ
B
CR
ITIC
AL
LO
AD
BU
S, Φ
C
NE
UT
RA
L
Cri
tica
l Lo
ad
Bu
s V
olta
ge,
Pha
se A
Cri
tica
l Lo
ad
Bu
s, P
has
e A
CT
X1
UP
S S
ou
rce,
Ph
ase
A C
T X
1U
PS
So
urc
e V
olta
ge, P
has
e A
Byp
ass
So
urc
e V
olta
ge
, Pha
se A
TIE
Bu
s V
olta
ge,
Ph
ase
A
UP
S S
our
ce P
ow
er S
upp
ly, P
has
e A
UP
S S
our
ce P
ow
er S
upp
ly, P
has
e B
NE
UT
RA
L
ST
AT
US
CO
M 1
ST
AT
US
OP
EN
1
ST
AT
US
CLO
SE
D 1
ST
AT
US
CO
M 1
ST
AT
US
OP
EN
1
ST
AT
US
CL
OS
ED
1
ST
AT
US
CO
M 1
ST
AT
US
OP
EN
1
ST
AT
US
CLO
SE
D 1
ST
AT
US
CO
M 1
ST
AT
US
OP
EN
1
ST
AT
US
CLO
SE
D 1
ST
AT
US
CO
M 1
ST
AT
US
OP
EN
1
ST
AT
US
CL
OS
ED
1
To
SIB
Bre
ake
r In
terf
ace
Boa
rd
To
MIB
Bre
ake
r In
terf
ace
Bo
ard
To
MB
B B
reak
er
Inte
rfa
ce B
oar
d
To
Tie
Bre
ake
r In
terf
ace
Bo
ard
Cri
tica
l Lo
ad
Bu
s, P
has
e A
CT
X2
Cri
tica
l Lo
ad
Bu
s, P
has
e B
CT
X1
Cri
tica
l Lo
ad
Bu
s, P
has
e B
CT
X2
Cri
tica
l Lo
ad
Bu
s, P
has
e C
CT
X1
Cri
tica
l Lo
ad
Bu
s, P
has
e C
CT
X2
Cri
tica
l Lo
ad
Bu
s V
olta
ge,
Pha
se B
Cri
tica
l Lo
ad
Bu
s V
olta
ge,
Pha
se C
TIE
Bu
s V
olta
ge,
Ph
ase
B
TIE
Bu
s V
olta
ge, P
has
e C
Byp
ass
So
urc
e V
olta
ge
, Pha
se B
Byp
ass
Sou
rce
Vol
tag
e, P
ha
se C
Byp
ass
So
urc
e P
ow
er S
upp
ly, P
has
e A
Byp
ass
So
urc
e P
ow
er S
upp
ly, P
has
e B
UP
S S
ou
rce,
Ph
ase
A C
T X
2
UP
S S
ou
rce,
Ph
ase
B C
T X
1
UP
S S
ou
rce,
Ph
ase
B C
T X
2
UP
S S
our
ce, P
has
e C
CT
X1
UP
S S
our
ce, P
has
e C
CT
X2
UP
S S
ourc
e V
olta
ge,
Ph
ase
B
UP
S S
ou
rce
Vo
ltag
e, P
hase
C
1. S
tar
Po
we
r T
ie c
onfig
ura
tion
sho
wn
.2
. Mo
tor
oper
ator
and
shu
nt tr
ip
con
nect
ion
s sh
ow
n fo
r al
l cir
cuit
bre
aker
s, a
lthou
gh M
IB,
MB
B a
nd
LB
B m
ay
be m
anua
lly o
pera
ted
typ
es
in s
ome
syst
em
s.
MIB
Vertiv™ | Liebert® NXL™ Power-Tie Controls | 17
4.0 SPECIFICATIONSTable 18 Liebert NXL Power-Tie Control specifications
Environmental Parameters
Storage TemperatureRange, °F (°C) -13 to 158 (-25 to 70)
Operating TemperatureRange, °F (°C) 32 to 104 (0 to 40) (UPS)
Relative Humidity 95% or less Non-Condensing(Operating and Non-Operating)
Maximum Altitude Abovemean sea level, ft (m)
4920 (1500) (as per IEC 62040/3) - 1% Max kWderate / 328 rise between 4921-9842
(100m rise between 1500-3000m)
Vertiv™ | Liebert® NXL™ Power-Tie Controls | 18
NOTES
Vertiv™ | Liebert® NXL™ Power-Tie Controls | 19
Vertiv™ | Liebert® NXL™ Power-Tie Controls | 20
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© 2018 Vertiv Co. All rights reserved. Vertiv and the Vertiv logo are trademarks or registered trademarks of Vertiv Co. All other names and logos referred toare trade names, trademarks or registered trademarks of their respective owners. While every precaution has been taken to ensure accuracy andcompleteness herein, Vertiv Co. assumes no responsibility, and disclaims all liability, for damages resulting from use of this information or for any errors oromissions. Specifications are subject to change without notice. SL-25520_REV7_8-18