Xantrex Technology 815-3524, 815-2524-02 manual Parallel Stacking

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Stacking Features

Parallel Stacking

Allows the inverter and charger capacity of a system to be doubled. Parallel-stacked inverter/chargers can operate from different battery banks, meaning each unit is connected to its own battery bank.

However, it is highly recommended to only use a single battery bank. See “DC Connections for Stacked Inverters” on page 43.

Do NOT connect a stacking cable to the STACKING port on the front panel of a Freedom SW 230V to configure two units for parallel stacking. The port is reserved for future use.

FREEDOM SW INVERTER/CHARGER

FREEDOM SW INVERTER/CHARGER

Two Freedom SW 3524-230 units shown.

NEUTRAL

L

GROUND

Two Freedom SW 3524-230 units shown.

NEUTRAL

30A

30A

GROUND

Figure 16 Parallel Stacking Using Two Freedom SW 3524-230s

42	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 Hazard Important Safety InstructionsElectrical Shock and Fire 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 HazardMarine Applications1 DC Disconnects and Over-Current DevicesDC Grounding Heavy Item To unpack and inspectMaterials Installation Tools and MaterialsTools Installing the Inverter/Charger OverviewHeat Hazard Choosing a Location for the Inverter/ChargerFire and Explosion Hazard Safe To mount the inverter/charger Mounting the Inverter/ChargerConsiderations Approved Mounting Orientation Orientation? Comment Orientation Approved Mounting Orientation? Comment This guide for use by qualified FIRE, Electrical SHOCK, and Energy Hazards Connecting the AC Input and AC Output WiresGeneral AC Wiring Considerations Connecting AC Input Wires Correct Batter Polarity will Cause Damage toInstalling the Inverter/Charger Equipment Damage Connecting the AC Output WiresTo make the AC output wiring connections Connecting the DC Cables DC Connection PrecautionsRecommended Cable Sizes and Lengths and Fuse Size Preparing the CablesGuidelines for Routing the DC Cables To connect the DC cables Connecting the DC Cables to the Inverter/ChargerEquipment Damage DUE to Reverse Polarity 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 ModeTo verify that the Freedom SW 230V starts charging Testing in Charge Mode and AC Bypass ModeInstallation Complete 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 Restrictions on Motor Size Battery BanksBattery Bank Sizing Worksheet 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 Shock Hazard Inverter Drip Shield InstallationTo install the drip shield Drip Shield Placement Desktop Mount 20 mm No clearance required here Page Page Schneider Electric Solar Inverters USA Inc