• Multiplus II Inverters

  How is the AC output affected by the PowerAssist feature in the MultiPlus-II 230

  Posted by Grippe on January 14, 2024 at 8:00 pm

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  I’m interested in how the PowerAssist feature works on my MultiPlus-II 230V, especially regarding its effect on the AC output.

  PaladinOfLight replied 5 months, 2 weeks ago 3 Members · 2 Replies
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  Lumin

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  January 15, 2024 at 4:49 am

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  The PowerAssist feature can add up to 3kVA to the output during peak power requirements.

  This means, in addition to the maximum input current of 32A, the MultiPlus-II can supply a total of up to 45 A to the output, accommodating moments of high demand.

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  PaladinOfLight

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  January 15, 2024 at 5:13 am

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  The PowerAssist feature is a unique capability of the MultiPlus-II 230V that provides additional power support during periods when your demand exceeds the available supply from the AC input.

  Here’s a detailed explanation:

  • PowerAssist Mechanism: When the demand on your AC output exceeds the current supplied by the AC input source, PowerAssist compensates for the shortfall by adding inverter power into the mix.

  • Calculating Added Power: For example, if the MultiPlus-II is a 3 kVA model and is connected to an AC source that supplies a maximum of 32A, the PowerAssist can contribute an additional power of up to 3kVA. Since 1kVA is roughly equivalent to 4.35A on a 230V system, this equates to an extra 13A (3000VA / 230V = 13A) that PowerAssist can provide.

  • Total Output Capacity with PowerAssist: This additional power means that the system can handle a total output current of up to 45A (32A from the AC input plus 13A from the PowerAssist feature).

  • Practical Implication: In practice, this means that if your shore power or generator is limited to 32A and you have a sudden requirement for 45A (due to multiple appliances turning on simultaneously, for example), the MultiPlus-II will automatically supplement the shore power with power from the battery bank, thus ensuring that your total demand is met without tripping any supply breakers.

  • Battery Utilization: During PowerAssist operation, the inverter draws additional current from the battery to supply the extra power. It’s important to note that the battery’s state of charge will affect how long the PowerAssist feature can sustain the additional output.

  • System Protection: The MultiPlus-II’s management system ensures that the additional inverter power is seamlessly integrated with the AC input power, protecting against overloads and allowing for uninterrupted power supply even during peak demands.

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