Tigo TSI-6K3D is a three-phase 6 kW hybrid inverter designed for photovoltaic installations and energy storage systems. It can operate as a standard PV inverter and, when the installation is expanded, becomes part of the Tigo energy storage system.

The inverter is equipped with two independent MPPTs, making it easier to design installations with modules operating under different irradiance conditions or on different roof orientations. The maximum PV input power for the TSI-6K3D is 10 kW, allowing the PV generator to be oversized in relation to the inverter's rated power.

The device can operate with Tigo solutions as part of the GO Optimized ESS system. When combined with the appropriate system components, it enables the creation of an installation with energy storage, energy flow management and backup power functionality. The inverter can also work with Tigo TS4 solutions, providing module-level monitoring.

The TSI-6K3D offers a maximum efficiency of 98.2% and communication via RS-485, Ethernet and Wi-Fi. The IP65-rated enclosure allows the device to be installed even in demanding environmental conditions.

Key features of the Tigo TSI-6K3D inverter:

• three-phase hybrid inverter with a rated power of 6 kW,
• 2 independent MPPTs,
• support for PV installations with a capacity of up to 10 kW,
• possibility of expanding the installation with a Tigo energy storage system,
• compatibility with the Tigo GO Optimized ESS system,
• possibility of integration with Tigo TS4 solutions,
• maximum efficiency of 98.2%,
• communication via Wi-Fi, Ethernet and RS-485,
• IP65 protection rating.

How to expand the Tigo TSI-6K3D inverter with an energy storage system?

To build a complete three-phase Tigo GO energy storage system based on the Tigo TSI-6K3D inverter, the installation should include:

• Tigo TSI-6K3D – hybrid inverter responsible for integrating the PV installation, energy storage system and grid,
• Tigo EI Link TSS-3PS – the central system connection module equipped with CCA and ATS,
• Tigo TGM-48 – BMS module responsible for managing the operation of the entire battery stack,
• Tigo TGB-M3.6 – battery modules with a nominal capacity of 3.68 kWh each.

In a three-phase configuration, the GO Battery system can consist of 3 to 13 TGB-M3.6 modules, providing a nominal storage capacity from approximately 11.0 kWh to 47.9 kWh.

For configurations with more than 9 battery modules, a second battery column and the Tigo TGB-A expansion kit are required.

The TSI-6K3D inverter, EI Link, TGM-48 and TGB-M3.6 modules form the complete foundation of the Tigo GO Optimized ESS system, which can be further expanded with additional Tigo components depending on the required installation functionality.