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The ‘Input Voltage Range’ is a critical setting that dictates the range of AC input voltages over which the MultiPlus-II 230V can synchronize and operate. Here’s a detailed explanation:
Functionality:
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The MultiPlus-II monitors the incoming AC voltage and synchronizes its output to match the input when it falls within a set range.
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The output voltage of the inverter will then mirror the input voltage as long as it stays within this predefined range.
Adjustability Range:
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You can adjust the lower limit of the input voltage range between 180V to 230V and the upper limit between 230V to 270V.
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This adjustability allows you to tailor the MultiPlus-II’s tolerance to the quality of your power source.
Lower Limit Setting:
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A standard lower limit of 180V is suited for areas with weak mains supplies or when using generators with fluctuating outputs.
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However, this may lead to issues with certain types of generators (synchronous AVR generators) that maintain their output voltage as they rev down, potentially causing the MultiPlus-II to shut down improperly.
Upper Limit Setting:
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The upper limit can be increased if your power supply tends to deliver voltages above the standard 230V without it being an actual overvoltage condition.
Recommended Adjustments:
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If you are using a high-quality generator, especially synchronous AVR generators, it may be advisable to increase the lower limit to 220V to avoid unnecessary shutdowns, as these generators typically provide very stable output.
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Alternatively, incorporating an AC contactor to disconnect the MultiPlus-II when stopping the generator can prevent undesired interactions with the generator’s voltage regulation.
Changing the Setting:
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To change the ‘Input Voltage Range’ setting, you’ll need to use the Interface MK3-USB and the VEConfigure tools software or the VictronConnect app.
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Within the software, navigate to the voltage settings and select the appropriate lower and upper voltage limits based on your power source and requirements.
Safety Note:
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Ensure that the settings you choose do not allow the MultiPlus-II to operate under conditions that could damage connected equipment or the inverter itself.
Testing After Configuration:
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Once the settings are adjusted, thoroughly test the system with the AC input to ensure that the MultiPlus-II operates smoothly across the new voltage range and does not prematurely shut down or fail to synchronize with your power source.
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