Emerson 480V Lug Size and Torque Requirements, Cable Lengths Floor to Connection Point Inside UPS

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Specifications and Technical Data

11.0SPECIFICATIONS AND TECHNICAL DATA

11.1Lug Size and Torque Requirements

Use commercially available solderless lugs for the wire size required for your application. Refer to Table 24. Connect wire to the lug using tools and procedures specified by the lug manufacturer.

Table 24 Torque specifications

Nut and Bolt CombinationS

				Electrical Connections
	Grade 2 Standard			with Belleville Washers
Bolt Shaft Size
Bolt Shaft Size	Lb-in		N-m	Lb-in	N-m
1/4	53		6.0	46	5.2
5/16	107		12	60	6.8
3/8	192		22	95	11
1/2	428		22	256	29

Circuit Breakers With Compression Lugs (For Power Wiring)
Wire Size or Range	Lb-in		N-m
#6 - #4	100		11
#3 - #1	125		14
1/0 - 2/0	150		17
3/0 - 200 MCM	200		23
250 - 400 MCM	250		28
500 - 700 MCM	300		34

Circuit Breakers With Compression Lugs (For Power Wiring)
Current Rating	Lb-in		N-m
400 - 1200 Amps	300.00		34.00

Terminal Block Compression Lugs (For Control Wiring)
AWG Wire Size or Range	Lb-in		N-m
#22 -#14	3.5 to 5.3		0.4 to 0.6

NOTE: Use the values in this table unless the equipment is labeled with a different torque value.

Table 25 Battery torque rating

	Initial Torque
Battery	in-lb (N-m)

UPS12-100MR	40	(4.5)

UPS12-150MR	25	(2.8)

UPS12-210MR	25	(2.8)

UPS12-300MR	110	(12.4)

UPS12-350MR	110	(12.4)

UPS12-400MR	110	(12.4)

11.2Cable Lengths: Floor to Connection Point Inside UPS

To help calculate the total cable length required, refer to Table 26 for the distance from the floor to selected connection points inside the Liebert NX. Determine the cable length required to reach the

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Contents

Liebert NX UPS Page Table of Contents UPS Specifications OptionsOperator Control and Display Panel Operating Instructions Pop-Up WindowsSpecifications and Technical Data Appendix a UPS Status MessagesTables Page Important Safety Instructions Battery Cabinet Precautions Glossary of Symbols Installation External InspectionsInternal Inspections Preliminary ChecksUPS Location Battery Location Considerations in Moving the Liebert NXMechanical Considerations Special Considerations for Parallel SystemsFloor Installation ClearancesCable Entry System CompositionCabinet arrangement-Liebert NX units and battery cabinets UPS Power Cabling Cable RatingLug Size and Torque Requirements UPS Input Configuration Cabling GuidelinesCable Connections Input and output busbarsSafety Ground Protective DevicesUPS Rectifier and Bypass Input Supply Cabling Procedure Output System Connections-Ensure Correct Phase RotationCommon Input Connections Dual Input ConnectionsFrequency Converter Mode Monitor Board FeaturesControl Cables Dry Contacts Maintenance Bypass Cabinet Interface Maintenance bypass cabinet interfaceInput Dry Contacts Input dry contacts atBCB Control Interface BCB control interfaceInverter mode relay center Main input fault relay centerOutput Dry Contacts Output dry contact relaysEPO Input-Optional EPO input contact relaysIndicates Pin Safety IntroductionExternal Battery Cabinet Installation Battery CabinetsConnecting the Batteries Installation ConsiderationsInsulated Post Tray Handle For Cabling Connecting the Battery Cabinet to the UPS Non-Standard BatteriesBCB Shunt Trip This power must be UPS protected Alber Monitoring System-OptionalLBS Cable and Settings Load Bus SynchronizationPerformance Requirements LBS CableConfiguring Parallel System Operation Features of Parallel SystemGeneral Installing Parallel System Operating Principles Redundancy ParallelingOperation Modes Summary Cabinet Installation Power CablesConditions for Parallel System Preliminary ChecksInterconnecting Auxiliary Dry Contact CablesCables Q1Ext Q2Ext QBypTo Load Normally Open EPO Normally Closed EPOUPS Mechanical Characteristics Environmental characteristicsUPS mechanical characteristics Conformity and StandardsUPS Electrical Characteristics UPS terminalRectifier input power Liebert approved replacement batteriesRated Power kVA 100 120 Battery Manufacturer Models SuppliedDC Intermediate Circuit Inverter OutputBypass Input Left Side GND Left Side View Front View Max. Door Swing U3819205 Batt Ext530628 Pg , Rev External Battery Cabinet Battery BreakerAuxiliary Contacts Top Top Front Right Side Front Rear SystemRear FRONTOutput Run From Conductors Ph A, B, C System Input Ph A, B, C UPS InputsPh A, B, C UPS Outputs AC OutputUtility UPS #1-UPS #4 Module AC Ph A, B, C UPS Inputs Ph A, B, C System OutputsGround UPS Isometric View U3819301Single module block diagram dual input configuration General DescriptionNormal Mode Battery ModeBypass Mode Bypass SuppliesMaintenance Mode Parallel Redundancy Mode System ExpansionOperator Control Panel Display Panel LayoutMimic indicators Control buttons Navigation keys Detailed view of control panelMimic Display Indicators Mimic display status indicatorsControl Buttons Control buttonsAudible Buzzer LCD OverviewNavigation Keys UPS System InformationIcons for navigation keys Description of items in UPS system windowLCD Menus and Data Items Descriptions of UPS menus and data window items Menu Type Item Type ExplanationMains InputStart/stop Battery Language SelectionTests Current Date and Time Set date and timeUPS Status Messages Current status and history log recordsDefault Screen Types of LCD ScreensOpening Display UPS Help Screen Screen Saver WindowPop-Up Windows Liebert NX Operating Modes UPS operating modesCircuit Breakers Circuit breakersStartup Procedure Indicator StateUPS Startup Switch from Normal Mode to Bypass Mode Switch from Bypass Mode to Normal ModeMaintenance Bypass Procedure and Powering Down the UPS Auto Restart Emergency Shutdown With EPOBattery Protection Multi-Module System ProceduresBattery Undervoltage Pre-Warning Battery End-of-Discharge EOD ProtectionTie breaker Inserting One Module into a Multi-Module System LED Function StatusShutdown Procedure-Complete UPS and Load Shutdown Commissioning a Parallel SystemParallel System Start Up Power Output Communication and Other User TerminalsAnalog Input Interface Liebert IntelliSlot CommunicationSee 10.1.5 Configuring Liebert NX communication optionsComments Baud RatesConfiguring Baud Rates Liebert IntelliSlot Web card display Relay Card pin configuration Relay card jumper configurationRelay Card Pin Function OperationMultiPort 4 Card AssignmentPin Description Remote Alarm Monitor LBS Mode-Load Bus SynchronizationReplacing Dust Filters Torque specifications Battery torque ratingLug Size and Torque Requirements Cable Lengths Floor to Connection Point Inside UPSDistance to connection points on the Liebert NX UPS Parallel system current tableExternal cabinet dimensions, including side panels Cable size and tightening torquesLead/Lag ratings 250 10 N*m Battery Run Times Estimated battery run time, minutesServices at 800-543-2378 for assistance UPS status messagesEvent Message Description / Suggested Action if any High ambient air temperature Bypass voltage is beyond the normal rangeBypass voltage exceeds the limit Software according to the customer’s agreementError can also leads to the alarm Alarm if applicableInverter STS Fail Condition is removedEmergency Power Off EPOUPS status messages UPS Status Messages Page Ne t ItiTi n That

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