Emerson user manual Typical Liebert FPC With transformer grounding arrangement

Page 21

Installation Instructions

Figure 12 Typical grounding arrangements

Service	Input
Entrance	J-box
	(if used)

N

G

G

Liebert FPC (with transformer)

N

G

Output

	Service entrance	Local grounding	Signal reference grid
	grounding electrode	Local grounding	(if used)
	grounding electrode	electrode	(if used)
	system	electrode
	system	conductor per
		conductor per
		NEC 250-28

Typical Liebert FPC

with transformer grounding arrangement

Service	Input	Liebert FPC
Entrance	J-box	(without transformer)
	(if used)

N

N

G

G

Service entrance

grounding electrode

systemTypical Liebert FPC without transformer grounding

N

Output

G

Signal reference grid (if used)

17

Image 21

Contents Liebert FPC Page Table of Contents Figures Important Safety Instructions Unpacking and Installation Unpacking and Preliminary InspectionHandling Considerations Inch cabinet weight Cutout Dimensions cooling airflow Footprint and Floor cable accessFront FrontLocation Considerations Unit PreparationSee Notes 2 Front and rear access is required. See Notes 1 Liebert FPC heat outputFull Load Heat Output Unit kVA BTU/Hr kW Floor pedestal details Floor Pedestal InstallationPower and Control Wiring Additional Distribution Mounting & WiringInput Power Connections Liebert FDC Distribution MountingElectrical connection location for 23 584mm cabinet FPC15000 Rev FPC15002 Rev Suggested minimum input wire size data Main input circuit breaker interrupting rating Main input junction box electrical connections 4 wire Junction Box InstallationLow-voltage control junction box dimensions, typical Main input power junction box dimensions, typicalEquipment Grounding System GroundingGrounding Electrode Conductor for FPCs With Transformer Signal Reference GridMinimum grounding electrode conductor size AWG Output VoltageSystemTypical Liebert FPC without transformer grounding Typical Liebert FPC With transformer grounding arrangementOutput Power Connections Liebert FPC +24VDC Liebert FPCUnit EPO MainWiring Low Voltage Terminal StripFactory Optional Customer Alarm Inputs Summary Typical control wiring for units with monitoringWarranty ChecklistsInternal Inspection StartupPanelboard main circuit breaker torque specifications Torque specifications, generalBranch circuit breaker torque specifications Terminal block compression lug torque specificationsUnit Serial Number Unit Model Number Date InspectionStartup Monitoring System Check-Out Customer Alarms Normal System Shutdown Startup ProceduresNormal System Turn on Manual RestartAlarm Present/Silence Power Monitor PanelBasic Monitor Panel Units Without Monitoring FPC16000Operating Instructions Ascii interface default parameters RS-232 Ascii port customer commandsParameter Default Field # Data item Units Monitored parameters data definitionsInspection and Cleaning RepairInspection Schedule Page Iti Ne tTi n That