Xantrex Technology 815-3524, 815-2524-02 To set the Max Chg Rate % setting in each Freedom SW

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Stacking Features

Example 4: System composed of two stacked Freedom SW 3524- 230s. Each Freedom SW 3524-230 has a maximum charge capacity of 90A. The two stacked Freedom SW 3524-230 inverter/chargers connected to the same battery bank can possibly produce a total of 180A.

The industry’s commonly accepted practice suggests a typical Flooded battery bank capacity (C) of 600Ah should not be charged beyond 25% of its capacity (150A). Therefore, when configuring the two stacked Freedom SW chargers, each charger may have a maximum charger output current of 75A (that is, 600 × 25% × 1/2) into the common battery bank as described in the Calculations section. Also, the System Total BULK output current is calculated as 150A (that is, 75A + 75A).

To set the Max Chg Rate (%) setting in each Freedom SW 3524-230:

1.Divide the maximum allowable charger output current of 75A by the Freedom SW 3524-230’s maximum charge capacity of 90A.

So, 75 ÷ 90, gets an approximate value of 0.83 (or 83%) which can be set exactly to 83%.

2.Set the Max Chg Rate (%) setting to 83 which means 83%.

In this example, the actual output current is limited to 83% of 90A which is 74A. Therefore, the actual System Total BULK output current comes out to just under 150A.

50	Freedom SW 230V Installation Guide

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Contents Freedom SW Sine Wave Inverter/Chargers Page This guide for use by qualified About This Guide PurposeElectrical Shock and Fire Hazard Important Safety InstructionsElectrical Shock Hazard Fire and Burn Hazard Explosion HazardPrecautions When Working With Batteries Exposure to Chemicals and Gases Hazard Risk of Damage to the INVERTER/CHARGERRegulatory Limitations on USEPage Contents Page This guide for use by qualified installers only Page Introduction Materials List Freedom SW 230V Installation Guide Materials ListInstallation Information Before You Begin the InstallationInstallation Codes Electrical Shock and Fire HazardsAbout the Xanbus System Xanbus SystemXanbus-enabled Products and Accessories About the Xanbus SystemPlanning the Installation Two Key Performance FactorsSize and Length of DC Cables Mounting Location of the Freedom SWPlanning Preparations AC, DC, and Network ComponentsPlanning Preparations Planning Preparations AC Components AC InputAC Disconnect and Over-Current Protection Device AC OutputAC Wiring Distribution PanelsModels Freedom SWDC Components BatteriesDC Cabling Fire HazardDC Grounding DC Disconnects and Over-Current DevicesMarine Applications1 Heavy Item To unpack and inspectTools Installation Tools and MaterialsMaterials Installing the Inverter/Charger OverviewFire and Explosion Hazard Choosing a Location for the Inverter/ChargerHeat Hazard Safe Considerations Mounting the Inverter/ChargerTo mount the inverter/charger Approved Mounting Orientation Orientation? Comment Orientation Approved Mounting Orientation? Comment This guide for use by qualified General AC Wiring Considerations Connecting the AC Input and AC Output WiresFIRE, Electrical SHOCK, and Energy Hazards Connecting AC Input Wires Correct Batter Polarity will Cause Damage toInstalling the Inverter/Charger To make the AC output wiring connections Connecting the AC Output WiresEquipment Damage Connecting the DC Cables DC Connection PrecautionsRecommended Cable Sizes and Lengths and Fuse Size Preparing the CablesGuidelines for Routing the DC Cables Equipment Damage DUE to Reverse Polarity Connecting the DC Cables to the Inverter/ChargerTo connect the DC cables DC Cable Connections To connect the chassis ground Connecting the Battery Temperature Sensor BTS Mounting OptionsMounting to the Negative Battery Terminal To mount the sensor on the negative battery terminalBTS port Mounting to the Side of the Battery Case To mount the sensor on the battery caseConnecting to the Network To connect the Freedom SW 230V to the Xanbus networkPerforming Checks Prior to Initial Start-Up Testing Your Installation Testing in Invert ModeInstallation Complete Testing in Charge Mode and AC Bypass ModeTo verify that the Freedom SW 230V starts charging Stacking Features Parallel Stacking DC Connections for Stacked Inverters Connect the stacked system as followsNeutral Wiring for Stacked Inverters Configuring System for Stacked Operation To configure the system for stackingSearch Mode Operation in Parallel Stacking Wiring SchematicDisabling Search Mode on the Master Unit Setting Search Mode on the Slave UnitCharger Settings in a Dual Freedom SW Configuration CalculationsTo set the Max Chg Rate % setting in each Freedom SW ExamplesTo set the Max Chg Rate % setting in each Freedom SW To set the Max Chg Rate % setting in each Freedom SW Inverter/Charger Physical Specifications Freedom SW Physical SpecificationsBattery Information Battery Bank SizingEstimating Battery Requirements Calculating Battery SizeBattery AMP-HOURS Used = AC WATT-HOURS÷10 Watts = Volts × AmpsDaily watt-hours needed Battery Bank Sizing Worksheet Battery BanksRestrictions on Motor Size Battery Information Battery Sizing Worksheet Battery Cabling and Hook-up Configurations Battery Series ConnectionBattery Series-Parallel Connections Specifications Environmental SpecificationsInverter Specifications Charger Specifications Transfer and General Specifications To install the drip shield Inverter Drip Shield InstallationShock Hazard Drip Shield Placement Desktop Mount 20 mm No clearance required here Page Page Schneider Electric Solar Inverters USA Inc