Offgridtec KStar 10.2kWh ESS hybrid system BluE-S 10kW 3-phase PV retrofit kit

All-In-One ess - On- and Offgrid, lfp battery, heat foil, Plug&Play

Discover the future of energy supply now with the all-in-one system KStar Blue-S by Offgridtec. The powerful 3-phase system, consisting of the efficient 10kW hybrid inverter and the latest lfp batteries with 10.2kWh capacity, supplies you and your home with sustainable and reliable energy. Thanks to its hybrid function, the inverter uses both solar energy and mains power to efficiently cover your energy requirements at all times. The integrated distribution box enables compact and convenient distribution of the electricity generated. With their catl lfp cell technology, the modular battery packs are among the safest and most efficient on the market. The innovative thermal foil enables continuous operation at temperatures as low as -10°C.

Mobile APP monitoring gives you control of your system anytime, anywhere, while adjustable power in each phase and diesel generator control support offer maximum flexibility. Settings can also be made directly on the device via the practical display. In addition, the 3-phase inverter enables the integration of PV modules up to 20kWh. The intelligent energy management and the various operating modes ensure security of supply in the event of a power failure or blackout, enable you to save on electricity costs and much more.

In addition to the hybrid inverter and the two storage modules, the energy storage system includes the matching battery base for easy and safe stacking of the system on the ground. The scope of delivery also includes the necessary connection cables to put the set into operation.

Compact, safe, efficient

• Plug&Play - simple installation
• Three-phase output
• Adjustable power in each phase
• Supports high PV voltage
• Mobile app monitoring
• On&Off grid parallel system
• Supports diesel generator control (DI/DO)
• Two MPP trackers (Maximum Power Point)
• catl-lfp battery
• 90% depth of discharge (DoD)
• Service life: ~10,000 cycles

Hybrid inverter

Compared to conventional inverters, hybrid inverters offer extended functionality. They not only enable the solar power generated to be fed into the grid, but also to be stored in batteries. This means that the stored solar power can be used even when there is no solar radiation. In addition, hybrid inverters optimize power consumption by using the generated solar power primarily in the household before feeding it into the grid. This leads to a reduction in energy costs and less dependence on expensive grid electricity.

Maximum Power Point Tracking

Thanks to Maximum Power Point Tracking (mppt) technology, a Solarasystem can optimize its yield. The Blue-S-10KT inverter is equipped with two MPPTs that adjust the voltage and current according to the solar irradiation and module temperature of the solar modules. With its wide MPPT voltage range, multiple solar modules can be connected efficiently to ensure optimal energy production. This advantage is particularly evident when the light intensity changes continuously due to partial cloud cover.

On&Off parallel grid system

The Hybrid Inverter offers an innovative On&Off mains parallel system. It enables seamless switching between the electricity grid and the solar power you generate yourself. In on-grid operation, the solar power is fed into the grid to optimize self-consumption. In off-grid mode, the inverter can use the electricity for self-consumption or battery charging when the power grid is not available. As a result, the inverter offers flexibility, maximum energy efficiency and a reliable power supply in various operating modes.

Diesel generator control (DI/DO)

The diesel generator control of the KStar Blue-S-10KT hybrid inverter offers an intelligent solution for controlling and using a diesel generator as a backup power source. By integrating a digital input (di) and output (do) interface, the inverter enables automatic activation or deactivation of the diesel generator based on predefined conditions.

The inverter's diesel generator control ensures efficient use of renewable energy resources and minimizes the use of the diesel generator to the extent necessary to meet the energy demand.

Mobile monitoring via app

With the practical app monitoring of the KStar Blue-S-10KT hybrid inverter, you have full control over your Solarasystem at any time and from anywhere. The user-friendly mobile app provides real-time data on the performance of your Solarasystem, including energy yield, operating modes and battery charge status. You also receive important notifications in the event of malfunctions and can take immediate action. The intuitive user interface allows you to adjust settings and monitor battery charge. The app monitoring of the KStar Blue-S-10KT Hybrid Inverter offers a convenient and effective way to optimize the performance of your Solarasystem.

Protection functions

The Kstar BluE-S-10KT Hybrid Inverter offers comprehensive protection functions, including short circuit, ac fault current, earth fault, islanding, overload, overvoltage and DC polarity protection. This ensures safe and reliable use of the inverter and protects against potential hazards and damage.

The Blue-Pack 5.1kWh battery

The KStar Blue-Pack 5.1kWh battery module is part of the BluE Residential ess system and offers flexible and customized energy expansion with modular lfp battery technology. It has an integrated bms and can easily expand the BluE Residential ess system up to 20kWh to meet individual requirements. A reliable energy supply for private and commercial applications and new possibilities for a sustainable future are made possible.

lfp batteries

lfp batteries, based on lithium iron phosphate technology, offer you maximum safety, longevity and environmental compatibility. With their chemical stability and resistance to overheating, they are the safe choice for your electrical applications. The high number of charge and discharge cycles ensures a long service life and reliable performance. Thanks to the environmentally friendly design without the use of rare or expensive materials, our lfp batteries are not only sustainable but also cost-efficient.

Integrated bms

The KStar Blue-Pack 5.1kWh battery module has an integrated battery management system (bms). The bms monitors and controls various parameters such as system voltage, current, cell voltage, cell temperature and PCBA temperature measurement. The bms ensures precise and efficient control of battery operation. In addition, the integrated bms is characterized by a low power consumption of less than 2w, which contributes to an optimal energy efficiency of the system.

Flexible expansion

The 3-Ph Blue Residential ess system from KStar demonstrates its flexible configuration options. The systems are expandable up to 20kWh. The simple and modular design makes installation and expansion very straightforward with the help of cables. A further advance of the new storage system is that, unlike other systems, a battery cabinet is no longer required. Only a battery base is required for a secure stand. This is already included in the scope of delivery of the hybrid system

Integration into existing photovoltaic systems

The kstar hybrid inverters are compatible with existing PV systems that do not have an electricity storage unit. The existing solar inverter can continue to be used. In this scenario, the kstar inverter functions similarly to an AC-coupled battery inverter. The overall system can also be expanded by simply connecting additional solar modules directly to the hybrid inverter.

The reuse of existing components offers numerous advantages. This leads to a reduction in installation work and costs. It also helps to protect the environment and prevents the loss of value of previous investments.

Technical data

PV input

• Recommended module power: up to 20kW
• Max. DC voltage: 1100V
• Nominal voltage: 720V
• MPPT voltage range: 140V-1000V
• Starting voltage: 200V
• Max. Input current per mppt: 15A
• Max. Short-circuit current per mppt: 20A

Battery input

• Battery nominal voltage 51.2V
• Charging voltage range: 44-58V
• Max. Charging current: 160A
• Max. Discharge current: 200A

Grid output

• ac rated output power: 10kW
• Max. ac apparent power: 11kVa
• rated ac voltage: 400Vac
• ac frequency range: 50/60Hz+/- 5Hz
• Rated output current: 13.3A
• Max. Output current: 16A

Backup output:

• ac rated output power: 9kW
• Max. ac output current: 10kVa
• Rated output current: 13.3A
• Max. Output voltage: 14.5A
• Nominal output voltage: 400V
• Rated output frequency: 50/60Hz

General information inverter

• Dimensions: 540 x 980 x 240mm
• Weight: 51kg
• Operating temperature: -25°C~60°C
• Protection class: IP65

Battery module Blue-Pack 5.1

• Battery type: catl lithium iron phosphate (LiFePO4)
• Capacity: 5.12kWh
• Nominal voltage: 51.2V
• DC circuit breaker: 125A
• Operating voltage range: 44.8-56.5V
• Service life: ~10,000 cycles
• Max. Charge/discharge current: 50A/80A
• DC rated power: 4096W
• Max. Charging/discharging power: 2825W/4096W
• Operating temperature range: -10 to 50°C
• Dimensions: 540 x 490 x 240mm
• System weight: 54kg
• Protection class: IP65

Scope of delivery:

2x KStar BluE-Pack battery 5.1kWh
1x KStar Blue-S-10KT Hybrid Inverter 10kW 3-phase
1x battery base
1x Inverter to battery connection cable set