MultiPlus-II 48/5000/70-50-GX

The MultiPlus-II 48/5000/70-50-GX is an advanced inverter-charger that integrates a pure sine wave inverter, a 70 A smart battery charger, and a 50 A fast AC transfer switch. It is designed for professional energy systems, marine, mobile, and energy storage applications, whether grid-connected or off-grid.

Continuous output power: 5000 VA (4000 W) at 25°CPeak power: 6500 WNominal battery voltage: 48 V DCAC input range: 187-265 V ACOutput: pure sine wave 230 V at 50 HzEfficiency: up to 96%

The MultiPlus-II 48/5000/70-50-GX has dimensions of 565 x 323 x 148 mm and weighs between 30 and 31 kg.

The device has an IP22 protection rating, allowing it to be used in various environments. Its operating temperature range is from -40 to +65 °C.

Yes, this model includes an integrated GX device with a 2x16-character display for real-time parameter monitoring.

The integrated GX device provides several connectivity options, including a BMS-Can interface, a VE.Direct port, a USB port, and an Ethernet port. These interfaces enable remote monitoring via the Victron VRM portal.

The PowerControl and PowerAssist functions are designed to optimize power management. They allow limiting the AC input current and supplementing AC power with battery energy during load peaks, thus preventing overload of the grid or generator.

Yes, the MultiPlus-II features UPS (Uninterruptible Power Supply) capability, ensuring uninterrupted power in less than 20 milliseconds in the event of a mains power failure.

Yes, the MultiPlus-II can operate in parallel. Up to six units can be connected to increase the system's total output power.

Yes, it is possible to configure a three-phase system by using three units of the same MultiPlus-II 48/5000/70-50-GX model.

A current transformer (CT) is a device that, when used with a MultiPlus-II, measures AC current on an external conductor without the current passing through the inverter-charger itself. It is used to implement PowerControl and PowerAssist functions, and to optimize self-consumption by detecting external current. It allows the MultiPlus-II to determine the amount of power flowing to or from the grid.

The current transformer clips around the AC conductor. The arrow on the transformer must point in the direction of the MultiPlus. The cable connects directly to the MultiPlus-II. For newer MultiPlus-II models, remove the wire jumper and connect the transformer wires to the external current sensor terminals, red wire to the EXT terminal and white wire to the COM terminal. For older models, simply plug the CT jack into the headphone jack.

Yes, there are two main versions of 100 A current transformers: one with wire ends for newer MultiPlus-II units and the MultiPlus 20k, and another with a jack plug for older MultiPlus-II units. A 400 A current transformer with wire ends is also available, but it is intended solely for applications with an external transfer switch in a three-phase multi-unit system.

The current transformer only supports single-phase monitoring and measures current, not voltage. It is less accurate than a dedicated energy meter, especially at low current. Additionally, the transformer’s wires must not be extended or shortened as they are calibrated for specific use with the transformer.

Yes, it is possible to connect a lithium battery system from another manufacturer to the MultiPlus-II. The external battery management system (BMS) must control the charging and discharging of the battery.

The BMS must provide two separate dry contacts that can be wired to the MultiPlus-II. These signals are used to instruct the MultiPlus-II to:

Switch to 'float' mode or disable the charger in case of cell overvoltage or full battery.Disable the inverter in case of cell undervoltage or empty battery.An isolation is required on the BMS side, typically via a small free-potential relay contact or an optocoupler.

In a parallel or three-phase system, the BMS must only be wired to a single MultiPlus-II. However, the "Two-Signal BMS Support" assistant must be programmed in all MultiPlus-II units in the system.

The MultiPlus-II has two AC outputs. The main output provides a "no-break" function, meaning it ensures uninterrupted power supply. The second output is an auxiliary output that can be used for non-critical loads.

The MultiPlus-II 48/5000/70-50-GX is particularly suited to professional power systems, marine applications, mobile vehicles, and energy storage systems, whether grid-connected or operating autonomously. Its advanced features and robustness make it versatile for these demanding environments.