Victron Energy MultiPlus-II 48V/5000VA/70A-50A inverter/charger

The MultiPlus-II is a multi-functional inverter/charger with the option of an external current sensor that extends the PowerControl and PowerAssist functions, ideal for use in islanded and ESS systems. It also has all the features of the MultiGrid unit with built-in anti-islanding protection on its AC input - enhanced protection to prevent unwanted supply to the distribution grid in the event of a grid failure.

Main features:

PowerControl and PowerAssist
MultiPlus-II prevents overloading of a power-limited AC source, e.g. a current-limited power connection or generator. Should a large load overload the input AC source, the charging current to the battery will be automatically reduced in the first step (PowerControl). The energy for charging is shifted to power the AC appliances. In the second step, the input AC source is boosted by the current drawn from the battery (PowerAssist). The AC output receives energy from the AC source and the battery (inverter) together.

Solar Energy
AC power can be available even in the event of a grid failure. MuliPlus-II can be used in off-grid (islanded) systems as well as in PV systems permanently connected to the distribution grid. The MultiPlus-II is not equipped with a PV array input, but is designed to work with MPPT controllers (DC coupling systems) or grid-tied inverters (AC coupling systems) located at the AC input and/or AC output.

One AC input
MultiPlus-II is equipped with one AC input for connecting a distribution network or e.g. a generator. If two AC inputs are required, then select the Quattro unit.

Two AC outputs
MultiPlus-II is equipped with two AC outputs. The main AC1 output ensures power supply without interruption. For example, in UPS mode, the MultiPlus-II will take over power to connected appliances (in less than 20 milliseconds) in the event of a mains or generator failure. The second AC output is only functional when the AC input (distribution network/generator) is available. Therefore, a load that would quickly drain the batteries, such as a water heater, can be connected to this output and it will only be powered from the AC source.

Virtually unlimited power through parallel and three-phase operation
Up to 6 MultiPlus-II units can operate in parallel to achieve higher power output. For example, six 48/5000/70 units provide 25kW/30kVA output power and 420A charging power. Three units of the same type can be configured for three-phase operation with phase shifting. But that's not all, up to 6 units in parallel can form a single phase. Thus, a three-phase system can consist of up to 18 units with a total continuous output power of 75kW/90kVA and a charging power of 1200 A.
The MultiPlus-II 8k, 10k and 15k models can only be connected in parallel if an external AC transfer switch is used. Refer to the MultiPlus-II External Transfer Switch Application Guide for more information.

ESS: Energy Storage Systems
The MultiPlus-II is a key element in the Victron Energy ESS system, providing the flexibility to be combined with solar MPPT controllers or grid-tied PV inverters.

Configure, monitor and control the system locally
Settings can be changed using the VEConfigure software (PC or laptop and MK3-USB interface required).

Remote configuration and monitoring
On installationuse Cerbo GX or another GX device to connect to the internet. Operational data can be stored and displayed on the VRM (Victron Remote Management) website free of charge. Once connected to the Internet, systems can be accessed remotely and settings changed. Several monitoring and control options are available: Cerbo GX, Ekrano GX, Color Control GX, Venus GX, laptop, PC, Bluetooth (with optional VE.Bus Smart dongle), Battery Monitor, Digital Multi Control Panel.

Four phase adaptive charging with two outputs for battery charging
The main DC output provides powerful full battery charging via an "adaptive charging" system. The software controls the three-stage automatic charging process to suit the condition of the battery, and adds a fourth charging stage - maintenance charging. MultiPlus-II is designed to charge all types of lead acid, alkaline and lithium batteries.

System configuration
In the case of a simple e.g. UPS installation, the setup can be easily done in a few minutes using the DIP switches on the MultiPlus-II or the VE.Configure 3 software and a PC. Parallel and three-phase applications can be configured using VE.Bus Quick Configure software (up to three units) or more complex systems using VE.Bus System Configurator software (above three units) and a PC.
Off-grid and hybrid PV installations to support self-consumption and greater energy independence, which include grid inverters and/or solar MPPT chargers, can be configured using VE.Configure 3 software with the appropriate assistants (dedicated functions for specific applications).

MultiPlus-II has several programmable relays and auxiliary contacts for a variety of additional functions. You can download the basic VE.Configure 3 software as well as the other software for configuration options free of charge at the following link: https://www.victronenergy.com/support-and-downloads/software
For the above software you will need the PC communication interface MK3-USB.

Technical parameters:

• Output voltage: 230 VAC ± 2% Frequency: 50 Hz ± 0.1%
• input voltage: 187-265 VAC, frequency: 45-65 Hz
• continuous power at 25ºC: 5000 VA / 4000W
• Peak power: 9000 W
• Transfer current: 50A
• Max. efficiency: 96%
• self-consumption: max. 18 W
• self-consumption in "Search" mode: 2 W
• Operating temperature range: -40 to +65 °C (fan cooling)
• Humidity (non-condensing): max. 95%
• weight: 30 kg
• Dimension: 565 x 320 x 149 mm

Victron Energy products are guaranteed by the manufacturer for 5 years.