MultiPlus 230V 2. Description 2.1. Boats, vehicles and other stand-alone applications The basis of the MultiPlus is an extremely powerful sine inverter, battery charger and transfer switch in a compact casing. Important features: Automatic and uninterruptible switching In the event of a supply failure or when the generating set is switched off, the inverter/charger will switch over to inverter operation and take over the supply of the connected devices. This is done so quickly that the operation of computers and other electronic devices is not disturbed (Uninterruptible Power Supply or UPS functionality).
This makes the inverter/charger highly suitable as an emergency power system in industrial and telecommunication applications. Two AC outputs Besides the usual uninterruptable output (AC-out-1), an auxiliary output (AC-out-2) is available that disconnects its load in the event of battery operation. Example: an electric boiler that is allowed to operate only if the genset is running or shore power is available. There are several applications for AC-out-2. Please enter “AC-out-2” in the search box on our website and find the latest information about other applications. Three units can be configured for three-phase output. The inverter/charger can supply a huge charging current.
This implies heavy loading of the AC mains or generator. Therefore a maximum current can be set. The inverter/charger then takes other power users into account, and only uses “surplus' current for charging purposes. PowerControl – maximum use of limited AC power PowerAssist – Extended use of generator or shore current: the inverter/charger “co-supply” feature This feature takes the principle of PowerControl to a further dimension allowing the inverter/charger to supplement the capacity of the alternative source.
Where peak power is often required only for a limited period, the inverter/charger will make sure that insufficient AC mains or generator power is immediately compensated for by power from the battery. When the load reduces, the spare power is used to recharge the battery. Programmable relay The inverter/charger is equipped with a programmable relay. The relay can be programmed for different applications, for example as a starter relay for a generator. External current transformer (optional) When used in a grid-parallel topology the internal current transformer cannot measure the current to or from the mains.
In this case an external current transformer is needed to implement PowerControl and PowerAssist. See appendix. Programmable analogue/digital input/output ports (Aux in 1 and Aux in 2, see appendix) The inverter/charger is equipped with 2 analogue/digital input/output ports. These ports can be used for several purposes. One application is communication with the BMS of a lithium-ion battery. 2.2. On-grid and off-grid systems combined with PV External current transformer (optional) When used in a grid-parallel topology the internal current transformer cannot measure the current to or from the mains.
In this case an external current transformer is needed to implement PowerControl and PowerAssist. See appendix. Frequency shift When solar inverters are connected to the output of the inverter/charger, excess solar energy is used to recharge the batteries. Once the absorption voltage is reached, charge current will reduce and excess energy will be fed back into the mains. If mains is not available, the inverter/charger will slightly increase the AC frequency to reduce the output of the solar inverter. Built-in Battery Monitor The ideal solution is when the inverter/charger is part of a hybrid system (diesel generator, inverter/chargers, storage battery, and alternative energy).
The built-in battery monitor can be set to start and stop the generator: Start at a preset % discharge level, and/or start (with a preset delay) at a preset battery voltage, and/or Page 3 Description