Victron MultiPlus 48/500/6-16 230V VE.Bus

The MultiPlus is a powerful pure sine wave inverter, an advanced battery charger using adaptive charging technology, and a high-speed AC transfer switch in a single compact enclosure. In addition to these primary functions, the MultiPlus also offers several advanced features, which are explained below.

The main output ensures uninterrupted operation. In the event of a mains failure or a loss of shore or generator power, the MultiPlus takes over the supply of the connected loads. The transfer occurs so quickly (in less than 20 milliseconds) that uninterrupted operation of computers and other electronic devices is ensured. The second output only supplies power if AC power is available at the input of the MultiPlus. Loads that must not discharge the battery, such as a water heater, can be connected to this output (a second output is available on models with a rated power of 3 kVA or more).

Up to six Multis can be connected in parallel for high power requirements. Six 24/3000/7 of devices, for example, deliver 15 kW / 18 kVA of output power with a 420 ampere charging capacity.

In addition to the parallel connection, three devices can also be configured for a three-phase output. But that is not enough: with three strings of six parallel devices each, a 45 kW / 54 kVA three-phase inverter and a 1260 A charger can be built.

Two devices can be combined to provide 120-0-120 V. Additional devices can be connected in parallel - up to 6 devices per phase -, to deliver up to 30 kW / 36 kVA of split-phase power. Alternatively, a split-phase AC source can also be created by connecting our savings transformer (see also the data sheet at www.victronenergy.com) to a ‘European’ inverter programmed to deliver 240 V / 60 Hz.

The MultiPlus is a very powerful battery charger. Therefore, it draws a lot of current from the generator or shore power supply (almost 20 A per 3 kVA MultiPlus at 120 VAC). With the Multi Control remote control panel, the maximum mains or generator current that can be drawn can be set. The MultiPlus then takes into account other connected AC loads and uses only the power that is still “left over” for charging. This prevents the generator or shore power connection from being overloaded.

With this function, the PowerControl principle gains a new dimension. It allows the MultiPlus to support undersized alternative sources. Load peaks often occur only for a limited period. In such a case, the MultiPlus ensures that insufficient shore or generator power is immediately compensated by energy from the battery. When the load is reduced, the “excess” energy can be used to charge the batteries.

The main output ensures powerful charging of the battery system with the help of the advanced ‘adaptive charging’ software. The software performs a fine-tuning of the automatic, three-stage charging process to adapt it optimally to the battery condition. In addition, it adds a fourth stage for long periods in maintenance mode. The adaptive charging process is described in more detail in the data sheet of the Phoenix charger and on our website under “Technical Information”. In addition, the MultiPlus charges a second battery by using an independent maintenance charging output, which is designed for a drive motor or a starter battery for a generator.

After installation, the MultiPlus is ready for operation. If settings need to be changed, this can be done within a few minutes using a DIP switch setting procedure. Even parallel connection or three-phase operation can be programmed using the DIP switches: no computer is required for this! Alternatively, VE.Net can also be used instead of the DIP switches. In addition, highly developed software (VE.Bus Quick Configuration and VE.Bus System Configuration) is also available to configure some new, advanced features.