Emerson 250 installation manual Front View Side View

Page 21

			Installation Drawings
Figure 8 Top cable entry routing and installation order
			OUTPUT CONDUIT
			INPUT CONDUIT
			BYPASS CONDUIT
			DC CONDUIT
	DC (POSITIVE)		DC (POSITIVE)
	DC (NEGATIVE)		DC (POSITIVE)
	DC (NEGATIVE)
	GROUND (TOP ENTRY)		DC (NEGATIVE)
	GROUND (TOP ENTRY)
			BYPASS NEUTRAL
	BYPASS NEUTRAL		BYPASS INPUT
			BYPASS INPUT
FAULT BRACE		FAULT BRACE	(PHASE C)
FAULT BRACE		FAULT BRACE
BYPASS INPUT	BYPASS INPUT	BYPASS INPUT	RECTIFIER INPUT
		FAULT BRACE	(PHASE C)
FAULT BRACE		FAULT BRACE
RECTIFIER INPUT	RECTIFIER INPUT	RECTIFIER INPUT	OUTPUT (PHASE C)
			OUTPUT (PHASE C)
FAULT BRACE		FAULT BRACE
FAULT BRACE		OUTPUT
OUTPUT	OUTPUT	OUTPUT
OUTPUT	OUTPUT
	GROUND
	(BOTTOM ENTRY)
	OUTPUT NEUTRAL		OUTPUT NEUTRAL

FRONT VIEW

SIDE VIEW

Recommended order of installation for cables: 1. DC Power

2. Bypass Neutral

3. Bypass Input Power (Phases A-B-C)

4. Rectifier Input Power (Phases A-B-C)

5. Output Power (Phases A-B-C)

6. Output Neutral

7. Ground

The cables must be routed around the fault braces. This is to prevent the cables from coming in contact with

other busbars.

17

Image 21

Contents

Liebert NXL Contacting Liebert for Support Product Warranty RegistrationTable of Contents Figures Important Safety Instructions Page Introduction SINGLE-MODULE Mechanical InstallationPreliminary Checks Environmental ConsiderationsSystem Composition PositioningCable Entry Maintenance Bypass CabinetUPS Electrical Installation Power CablesExternal Protective Devices Dual InputTop Cable Entry Power Cable Connection ProcedureExternal Interface Board connections layout Control Cable and CommunicationsEPO Input Dry Contact Dry ContactsControl Status Inputs Dry Contact Remote EPO inputSwitch Auxiliary Inputs Dry Contacts Control Status Output Dry ContactsLoad Bus Synch Connection Single-Module System Options Communication and MonitoringOptional Equipment Main components location, 250kVA Liebert NXL UPS Installation Drawings Top View Doors Open Doors and Inner Skins Removed Outline drawing, 300kVA Liebert NXL UPS Front Front View Side View Front View Right Side View Front Doors Removed Front Detail a Liebert NXL UPS specifications SpecificationsBattery & DC Parameters 250 300 400 Input ParametersEnvironmental Parameters 250 300 400 Physical Parameters and Standards, in mmLiebert NXL system and inverter efficiencies Current ratings-batteryCurrent ratings-rectifier input Current ratings-bypass inputRecommended conduit and cable sizes BatteryRectifier Input Bypass InputSeries Cable Size One Hole Two Hole Recommended lug sizesIti Ne tTi n That

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