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When you receive your MultiPlus-II 230V, it comes with a set of standard factory settings that are generally suitable for single-unit operations.
Here’s a breakdown of these settings and what you should consider checking:
Inverter and Input Settings:
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The inverter frequency is set to 50 Hz, which is standard for many regions.
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The input frequency range it can accept is between 45 and 65 Hz.
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The input voltage range is broad, from 180 to 365 VAC, accommodating various grid conditions.
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The inverter output is set to a standard European voltage of 230 VAC.
Charging and Battery Settings:
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The charger is enabled by default.
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The battery charge curve is configured to a four-stage adaptive mode with BatterySafe to protect against overcharging.
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The charging current is set to 100% of the maximum the unit can handle, but ensure this is suitable for your specific battery bank.
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The factory settings are optimized for Victron Gel Deep Discharge batteries, and while they’re also suitable for AGM Deep Discharge types, you should verify this against your battery manufacturer’s recommendations.
Voltage Settings for Charging:
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Absorption voltage is set to 28.8V for 24V systems and 57.6V for 48V systems, which are typical values for lead-acid batteries.
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The float voltage follows at slightly lower values, and storage voltage is set, not adjustable, to prevent over-discharge during storage.
Safety and Operation Modes:
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Ground relay is on, ensuring the inverter is grounded correctly for safety.
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Bulk protection is enabled to protect your batteries during the bulk charging phase.
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The UPS feature is on, allowing for uninterrupted power supply during grid outages.
Current Limits and PowerAssist:
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The AC input current limit is set at 32A for the 3kVA model. This is adjustable and should be verified to match your AC source capabilities.
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PowerAssist is enabled, allowing the inverter to supplement grid power with battery power during peak demand.
6. Preliminary Checks and Adjustments:
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Battery Compatibility: Before using your MultiPlus-II, verify that the default charging voltages align with your specific battery type. This is crucial because incorrect charging settings can reduce battery life or cause damage.
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Programmable Relay: The programmable relay is set to an alarm function by default. Depending on your needs, you may want to reconfigure this relay for other uses, such as a generator start/stop mechanism.
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System Configuration: Check if your system requires a stand-alone, parallel, or 3-phase setup. The unit is set to stand-alone by default, but this may need to be changed depending on your system design.
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