Xantrex Technology 815-2524-02, 815-3524 manual DC Connections for Stacked Inverters

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Stacking Features

DC Connections for Stacked Inverters

Individual overcurrent devices are to be used between the battery positive and each inverter. Keep cable lengths to the two inverter/ chargers the same in order to balance cable losses. If not, the battery cable difference in length between the two inverter/chargers should not exceed 30 cm.

Connect the stacked system as follows:

1.Connect each negative terminal to the battery.

2.Connect a earth (ground) wire to the common negative.

3.Connect each positive terminal of the inverter to the battery through a DC disconnect in each positive line. Do not tie the positives together between inverters.

4.Connect the earth (ground) bonding wire from each inverter to the same location on the vehicle chassis. Use that same length and gauge wire for both inverter/chargers.

5.Connect the battery temperature sensors (BTS), if needed.

Two Freedom SW 3524-230 units shown.

1

3

5

tteryaB gativeeN
Battery Positive
Battery	gativeeN
Battery Positive
	4
	2
	Earth/
	Ground

This guide for use by qualified personnel only.

Figure 17 Connecting Battery Cables and DC Earth/Ground Wires

975-0697-01-01

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Contents Freedom SW Sine Wave Inverter/Chargers Page This guide for use by qualified Purpose About This GuideImportant Safety Instructions Electrical Shock and Fire HazardElectrical Shock Hazard Explosion Hazard Fire and Burn HazardPrecautions When Working With Batteries Risk of Damage to the INVERTER/CHARGER Exposure to Chemicals and Gases HazardLimitations on USE RegulatoryPage Contents Page This guide for use by qualified installers only Page Introduction Materials List Materials List Freedom SW 230V Installation GuideBefore You Begin the Installation Installation InformationInstallation Codes Electrical Shock and Fire HazardsXanbus System About the Xanbus SystemAbout the Xanbus System Xanbus-enabled Products and AccessoriesTwo Key Performance Factors Planning the InstallationSize and Length of DC Cables Mounting Location of the Freedom SWAC, DC, and Network Components Planning PreparationsPlanning Preparations Planning Preparations AC Input AC ComponentsAC Disconnect and Over-Current Protection Device AC OutputDistribution Panels AC WiringFreedom SW ModelsBatteries DC ComponentsDC Cabling Fire HazardDC Disconnects and Over-Current Devices DC GroundingMarine Applications1 To unpack and inspect Heavy ItemInstallation Tools and Materials ToolsMaterials Overview Installing the Inverter/ChargerChoosing a Location for the Inverter/Charger Fire and Explosion HazardHeat Hazard Safe Mounting the Inverter/Charger ConsiderationsTo mount the inverter/charger Approved Mounting Orientation Orientation? Comment Orientation Approved Mounting Orientation? Comment This guide for use by qualified Connecting the AC Input and AC Output Wires General AC Wiring ConsiderationsFIRE, Electrical SHOCK, and Energy Hazards Correct Batter Polarity will Cause Damage to Connecting AC Input WiresInstalling the Inverter/Charger Connecting the AC Output Wires To make the AC output wiring connectionsEquipment Damage DC Connection Precautions Connecting the DC CablesRecommended Cable Sizes and Lengths and Fuse Size Preparing the CablesGuidelines for Routing the DC Cables Connecting the DC Cables to the Inverter/Charger Equipment Damage DUE to Reverse PolarityTo connect the DC cables DC Cable Connections To connect the chassis ground Mounting Options Connecting the Battery Temperature Sensor BTSTo mount the sensor on the negative battery terminal Mounting to the Negative Battery TerminalBTS port To mount the sensor on the battery case Mounting to the Side of the Battery CaseTo connect the Freedom SW 230V to the Xanbus network Connecting to the NetworkPerforming Checks Prior to Initial Start-Up Testing in Invert Mode Testing Your InstallationTesting in Charge Mode and AC Bypass Mode Installation CompleteTo verify that the Freedom SW 230V starts charging Stacking Features Parallel Stacking Connect the stacked system as follows DC Connections for Stacked InvertersNeutral Wiring for Stacked Inverters To configure the system for stacking Configuring System for Stacked OperationWiring Schematic Search Mode Operation in Parallel StackingDisabling Search Mode on the Master Unit Setting Search Mode on the Slave UnitCalculations Charger Settings in a Dual Freedom SW ConfigurationExamples To set the Max Chg Rate % setting in each Freedom SWTo set the Max Chg Rate % setting in each Freedom SW To set the Max Chg Rate % setting in each Freedom SW Freedom SW Physical Specifications Inverter/Charger Physical SpecificationsBattery Bank Sizing Battery InformationCalculating Battery Size Estimating Battery RequirementsBattery AMP-HOURS Used = AC WATT-HOURS÷10 Watts = Volts × AmpsDaily watt-hours needed Battery Banks Battery Bank Sizing WorksheetRestrictions on Motor Size Battery Information Battery Sizing Worksheet Battery Series Connection Battery Cabling and Hook-up ConfigurationsBattery Series-Parallel Connections Environmental Specifications SpecificationsInverter Specifications Charger Specifications Transfer and General Specifications Inverter Drip Shield Installation To install the drip shieldShock Hazard Drip Shield Placement Desktop Mount 20 mm No clearance required here Page Page Schneider Electric Solar Inverters USA Inc