ESS 3 Phase Victron Multi RS 18kVa Voltsmile 30kWh

Multi RS system with 18 kVA power and 30 kWh Voltsmile storage capacity

The 3-phase Victron-Voltsmile ESS package with three Multi RS Solar 6000 units (total 18 kVA) is a powerful, modular and professional energy storage system for detached homes, commercial buildings and off-grid applications.

The system combines three Victron Multi RS Solar 6000 inverters with six Voltsmile V10 RPC LiFePO₄ battery modules, placed in a 22U battery cabinet. Together they form a completely integrated solution for energy management, emergency power supply and peak-shaving. The high efficiency, quiet operation (max. 43 dB) and low weight of only 11 kg per inverter make this system very efficient and easy to install.

Victron Multi RS Solar 48/6000 – core of the system

The Multi RS Solar series is a quiet, efficient and compact solution for modern ESS systems. Compared to traditional hybrid inverters, this series is significantly lighter and more energy efficient.

In this system, three Multi RS Solar 6000 units are combined into a powerful 3-phase system with 18 kVA of power. Each inverter delivers about 5 kW continuous per phase and features a 100 A battery charger for fast and efficient battery charging processes.

Key specifications

– Continuous output power: approx. 5 kW per phase (total ±15.5 kW @ 25°C)
– Battery charger: 100 A / 48 VDC per unit (±4.8 kW charging power)
– Pass-through power: 50 A AC per phase
– Full 3-phase system – suitable for ESS, UPS and off-grid applications
– Automatic emergency power switching within 20 ms
– Smart power management between battery, solar panels and grid

The inverter can briefly deliver high peak power up to 9000 W, allowing heavy loads such as motors, heat pumps or machines to start up without problems.

Peak-shaving and virtual grid augmentation

The integrated peak-shaving functionality allows the system to provide additional power from the battery during peak loads.

This allows, for example, a standard 3×25 A grid connection to function as a virtual connection of approximately 3×46 A.

Instead of pulling peak loads entirely through the grid, additional power is temporarily supplied from the battery.

25 A (mains) + 21 A (battery) = ±46 A peak power per phase.

Advantages

– Virtual enlargement of a 3×25 A connection to approximately 3×46 A
– No need for expensive grid reinforcement
– Lower fixed grid costs
– More efficient use of solar energy
– Flexibly expandable system

With this peak support, the grid connection can often be reduced from 3×35 A to 3×25 A, which can save about €1,300 per year in standing charges.

Connecting solar panels directly – up to about 50 panels

The Victron Multi RS Solar is prepared for direct connection of solar panels via integrated MPPT trackers.

Each Multi RS Solar has 2 MPPT inputs, giving this system a total of 6 independent MPPT trackers.

This can connect about 50 solar panels, divided into several strings.

Advantages of direct PV connection

– Up to 6 independent MPPT trackers
– Direct DC charging of batteries
– Up to 99% efficiency
– No additional PV inverters required
– Suitable for different roof directions (e.g. east-west)

This makes the system ideal for installations with multiple roof surfaces or complex PV setups.

Emergency power supply

The Multi RS features an AC input for mains connection and an AC output for critical consumers.

In the event of a power failure, the system automatically switches to battery power within 20 milliseconds, keeping important equipment functioning.

This makes the system suitable for applications where energy security is essential, such as homes, businesses or technical facilities.

Operation with solar panels during power outages

When PV inverters are connected to the AC output of the Victron system, solar power generation can continue to operate even during power outages.

The Multi RS automatically regulates the charging capacity of the PV inverter via frequency control. This keeps the batteries safely charged without risk of overcharging.

For a 3-phase system with three Multi RS 6000 units, the maximum PV inverter power is 18 kW.

Monitoring and energy management

The system is controlled by the Victron Cerbo GX, Victron’s central energy management platform.

Combined with the GX Touch 50 display, you get real-time insight into:

– battery status
– energy consumption
– solar yield
– grid load
– energy flows by phase

Through Dynamic ESS, the system can automatically respond to variable energy rates, charging energy when power is cheap and discharging it when prices are high.

Battery Storage

The system contains 6 Voltsmile V10 RPC LiFePO₄ battery modules with a total storage capacity of about 30 kWh.

These batteries feature:

– integrated BMS
– temperature protection
– short-circuit protection
– communication with Victron system

LiFePO₄ cells offer more than 6,000 charging cycles and a service life of more than 10 years.

Thanks to the Rapid Connection Plug & Play system, the batteries are inserted directly into the rack without loose DC wiring. The system is also expandable up to 63 battery modules.