Compact transformer station for BESS systems
Turnkey compact transformer stations for BESS
The energy sector is changing. Increasing demands for flexibility, security of supply and efficiency make new technologies necessary. Particularly in the area of battery storage (BESS = Battery Energy Storage Systems) win transformer compact stations for BESS systems are becoming increasingly important. They are the link between energy storage and the electricity grid and enable a secure, efficient and sustainable energy supply - for industry, commerce and infrastructure projects.
Structure & features
Safety and standards
We supply transformers that support both IT and TN network systems. This allows:
- Flexible mains connection of the BESS systems (depending on standard requirements, application or manufacturer specifications).
- Safe galvanic isolation - particularly important for mains-coupled systems with insulation monitoring.
- The option of fine-tuned grid integration, even in complex hybrid solutions.
Transformer types
Cross-brand customisation
Our transformer stations can be connected to all battery systems and such as CATL, BYD, Voltfang and inverters Delta, SMA, Kaco and many others.
Network compatibility
Scalable compact transformer stations
We supply compact transformer stations from 250 kVA to 3,150 kVA - modularly expandable
- Standard output from 250 kVA to 3,150 kVA - ideal for commercial and industrial storage solutions or trading storage.
- If required, we can realise outputs of up to 20,000 kVA, depending on the voltage level of the medium voltage, the operating environment and the medium-voltage technology used.
- Modular design: Combination with additional function modules (e.g. transfer restriction, switching technology, metering points, energy management units).
- Areas of application
Our transformers and transformer stations for BESS systems are used in a wide range of applications - from charging infrastructure with buffer batteries and industrial storage solutions for peak shaving and self-consumption optimisation to control power, hybrid systems with PV, wind or diesel and scalable trading storage systems.
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Personalised advice
Our contact person will advise you individually on your BESS solution (battery storage systems) and the appropriate compact transformer station. Together we will clarify the technical requirements and grid connection so that you can quickly obtain the right design and quotation.
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Frequently asked questions about the transformer station for BESS
What is a transformer station for BESS and what is it needed for?
A transformer station for BESS is a specially configured compact station that connects battery storage systems safely and efficiently to the public electricity grid. It ensures that the energy stored in the BESS is transformed to the correct voltage and can be safely fed into or withdrawn from the grid. Without a transformer station, a direct connection between the battery storage system and the grid is usually not possible.
What are the advantages of a transformer station specially designed for BESS?
Such transformer stations are optimised for the technical requirements of battery storage systems: they offer a high degree of flexibility in terms of voltage level, support fast charging and discharging processes and are designed for bidirectional operation. This enables efficient load management and increases the cost-effectiveness of the overall system.
What information is required for planning a transformer station for BESS?
Important information includes the desired medium-voltage level (e.g. 10 kV, 20 kV), the battery voltage (e.g. 400 V, 800 V), the maximum charging/discharging current (C-rate), the storage capacity (kWh), the desired power (kW/kVA) as well as the location and grid operator. The more precise this information is, the better the station can be customised to the project.
How long does it take to deliver and install a transformer station for BESS?
The delivery time depends on the complexity and the manufacturer's capacity utilisation, but is typically between 8 and 20 weeks from commissioning. The actual installation and commissioning on site usually only takes a few days, provided that the preparatory work (e.g. foundation, grid connection) has been completed.
What standards and regulations apply to transformer stations for BESS?
Various national and international standards apply to transformer stations, including VDE 0101, VDE 0670 and IEC standards for transformers and switchgear. In addition, the specific specifications of the grid operators and the requirements for battery storage systems (e.g. protection technology, EMC) must be complied with.
Intelligent battery storage systems
Faber E-Tec supplies future-proof battery energy storage systems (BESS) for every requirement profile. Our portfolio ranges from compact commercial storage systems for optimising self-consumption to large-scale container storage systems for industry and large-scale energy parks. What makes our approach special is that we take a holistic approach to energy infrastructure. Every BESS solution can be flexibly combined with our customised transformer stations. In this way, we ensure a smooth grid connection and a turnkey energy supply from a single source - perfectly harmonised in technical terms.
Definition & Functionality
A compact transformer station for BESS systems is a turnkey, compact station unit that contains one or more transformers and other electrical components. It is responsible for converting the direct current stored in battery storage systems (BESS) into alternating current, transforming it to the required voltage level and feeding it safely into the supply grid.
Important components
Typical components of a compact station for BESS are
- Transformer (oil or dry transformer)
- Switchgear (medium voltage/low voltage)
- Protective and control elements
- Measuring and monitoring technology
- Necessary ventilation and cooling systems
Differences to classic compact stations
While standard compact stations often serve as a transfer point between the grid and the end consumer, BESS compact stations are specially designed for the integration of battery storage systems. They often offer greater flexibility, customisability and additional interfaces for energy management and control systems.
News and highlights
Highly flexible transformer solutions for modern battery storage systems
Faber E-Tec offers powerful transformers for BESS with IT/TN system, 250 kVA-20 MVA, 400V/690V/800V - ideal for storage, PV & grid services.
BESS systems play a central role in the energy transition - especially when it comes to balancing generation and consumption, reducing peak loads and utilising renewable energy more efficiently. The compact transformer station ensures that the stored electricity is fed into the grid in the right quality and quantity.
Contribution to the energy transition
By using battery storage systems and compact transformer stations, surplus energy from wind and solar parks can be temporarily stored and fed into the grid at different times. This improves grid stability and enables better integration of renewable energies
Advantages for trade & industry
There are numerous advantages for companies in particular:
- Reduction of peak loads and grid charges
- Securing the power supply in the event of power failures (backup)
- Utilisation of self-generated energy (e.g. PV systems)
- Contribution to sustainable energy management
