The Multi RS19 Solar 48/6000/100-450/100 230V is a lightweight, high-frequency 48V/6kVA inverter/charger with two independent 3kWp PV MPPT trackers, each accepting 65-450V DC input, for 6kWp total PV capacity. It is the 19″ variant of the Multi RS Solar, made to fit into the standard 19″ battery rack for a more compact installation, and is suitable for both grid-connected and off-grid applications.

For grid-connected applications, it supports Dynamic ESS functionality while offering the flexibility to pair it with a different type or size of solar inverter, as excess PV capacity can be added via AC-coupled PV inverters whose output is automatically managed by the Multi RS's frequency shift power control. It can also be used as a direct grid connection without batteries, making it easy to start simple and add storage later.

For off-grid applications, the Multi RS offers a lightweight solution that keeps the batteries fully charged and supplies additional power when demand is high.

With the high-frequency technology, it delivers exceptional efficiency in a quiet, lightweight package with low standby power consumption.

All parameters can be monitored via the integrated display or the VictronConnect app, which also provides historical trends. It can be connected to a GX device, such as a Cerbo GX, for advanced ESS functions, like zero-export to block grid feed-in

Operating modes

• Hybrid mode – Stores excess solar energy in a battery, to be used during the night or periods of high demand. Supplies additional power from the battery when demand exceeds grid capacity.
• Backup mode – Switches to backup mode during a grid outage.
• Off-grid mode – Operates without grid connection.
• Generator mode – Controls the generator to minimize run-hours. Supplies additional power from the battery when demand exceeds the capacity of the generator.

PowerControl and PowerAssist - Boosting the capacity of the grid or a generator
A maximum grid or generator current can be set. The Multi RS will then take account of other AC loads and use whatever is extra for battery charging, thus preventing the generator or grid from being overloaded (PowerControl function). PowerAssist takes the principle of PowerControl to a further dimension. Where peak power is so often required only for a limited period, the Multi RS will compensate insufficient generator or grid power with power from the battery. When the load reduces, the spare power is used to recharge the battery.

Display, Bluetooth and VictronConnect app
The display reads battery, inverter and solar parameters. The same parameters can be accessed with a smartphone or other Bluetooth enabled device, using the VictronConnect app.

Extendable PV capacity, both AC-coupled and DC-coupled
The integrated 6 kWp PV capacity can be extended by adding solar chargers to the system.
Alternatively, the PV capacity can be extended by installing PV Inverters, of which the output power will be automatically controlled by the integrated frequency shift power control.

Communication ports
VE.Can connection to a GX device for system monitoring, energy meter (11), data logging, and remote firmware updates. VE.Direct connection to a GlobalLink 520 for remote data monitoring.

I/O Connections
Programmable relay, temperature sensor and voltage sensor connections.

1) Minimum start-up voltage is 41 VDC. Over-voltage disconnect: 65,5 V.
2) Can be adjusted to 240 VAC and 60 Hz
3) Peak power capacity and duration depend on start temperature of heatsink. Mentioned times are with cold unit.
4) The maximum PV voltage should not exceed 8x battery float voltage. E.g. If the battery voltage is 50 V, the maximum PV voltage should not exceed 8 x 50 = 400 V.
5) The Charger set points (float & absorption) can be set to max 60 V. The output voltage at the charger terminals can be higher due to compensation for temperature & voltage
drop over the battery cables. The maximum output current is reduced on a linear basis from full current at 60 V to 5 A at 62 V. The equalization voltage can be set to max 62 V, the
equalization current percentage can be set to max 6 %.
6) The maximum charge current from AC sources depends on input voltage and battery current. At 230V input and 57.6V battery voltage, and 25°C ambient, the maximum charge
current is 88 A. See manual, limitations section, for further details.
7) AC-out-2 is connected directly to the AC input and intended for non-critical loads. The AC-out-2 load is taken into account by PowerControl & PowerAssist.
8) Programmable relay which can be set for general alarm, DC under voltage or genset start/stop function. DC rating: 4 A up to 35 VDC and 1 A up to 70 VDC
9) Protection key: a) output short circuit b) overload c) battery voltage too high d) battery voltage too low e) temperature too high f) 230 VAC on inverter output g) solar
earth leakage.
10) Not currently compatible with VE.Smart Networks. Connection to a GX device (i.e. Cerbo GX) must be made via the VE.Can interface. The VE.Direct interface is for connection to
the GlobalLink 520.
11) Connectivity to the Victron VM-3P75CT energy meter must be made via VE.Can or Ethernet. Avoid intermediate Wi-Fi links between the energy meter and the GX device, as Wi-
Fi can introduce latency and reduce reliability.