Adding capacity in photovoltaic plants is a core part of the energy transition. Investment in PV plants therefore needs to be made as attractive as possible for operators. In order to make the planning, construction and operation of PV systems more economical, the centralized string inverter concept was developed. Which replaces a central inverter with multiple string inverters centralized in one place.
The string inverters are installed at a central location in the ground-mounted PV system, while the DC combiner boxes are distributed in the field near the panels. As a result, the lengths of the cables between the inverter and transformer are short, and there is minimal power loss on the AC side. The power loss can be reduced by up to 1.5% per km. This means that the high efficiencies of the inverters are fully exploited and unnecessary AC cables on the AC side are avoided. This also means that the defined power at the AC connection point is achieved. And due to the typical overcrowding of the PV generator compared to the inverters, the cable losses on the DC side are of little importance.
The DC combiner boxes from Weidmüller is perfectly designed for string inverters from various manufacturers. Due to the flexibility, power losses can be reduced. Contact us – we can easily configure the right DC combiner box for your system.
With itsVirtual Central Systemdesign ,KACO new energy offers highly efficient
single-MPPT string inverters that perfectly match our products.
Our DC combiner box can be modularly adapted to the string inverters of the various manufacturers. Please contact us for more details.
We attach great importance to the safety of our customers and quality of our products. We ensure that our products and PV farms will enjoy a long service life and withstand the wind and weather. We've already been helping to shape the fast-growing international photovoltaics market for years. So we can say with conviction: You can trust in our DC combiner boxes. See the capabilities of our solutions and our DC combiner box with string inverter for yourself!
Our DC combiner box is ready for high currents at all times.
Our DC combiner boxes offer flexible system design - including suitability for high current solar modules, efficient operation, easier maintenance, faster installation and commissioning.
The central concept results in costs up to 10% lower for the electrical infrastructure of a PV plant.
We want our customers to remain competitive and to get the best out of their PV systems. That's why our DC combiner boxes impresses with innovative features that keep PV systems running even more efficiently. Our DC combiner box is rounded off with an optimized design for maximum efficiency, special fuses and overvoltage protection for safety and high power. Our DC combiner box optimizes every PV system!
Whether you're a project planner for large-scale PV systems or a technical consultant, the search for a DC combiner box that is rugged and durable to withstand harsh weather conditions and high current with ease ends here. We've got the perfect solution for you. Our DC combiner box make PV systems run efficiently and convince with many helpful features that counter known problems with innovative solutions.
Are you interested in our DC combiner boxes for string inverters? Then contact us! We would be happy to advise you.
We like to offer compact solutions that meet all necessary requirements and can master the challenges of each individual situation with ease. That's why we have a diverse range of products that perfectly complement our DC combiner boxes. For example, you can combine our DC combiner boxes with a PV monitoring system to achieve top efficiency in your PV systems through the capture and analysis of data. Or we can ensure reliable and secure communication between your photovoltaic systems. We're a great partner for efficient complete solutions!
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Our laboratory is accredited in accordance with international standards. It operates independently and is recognised by institutions, registration services, and other institutions and authorities. As a member of the CTDP program, Weidmüller is regularly audited by UL, especially regarding test methods, quality management and documentation.
PV DC combiner boxes are tested according to IEC-61439-2 and are constructed on the basis of the test results as well as assembled for the specific application. This ensures that each of the requirements of the target application is fully met.
Do you have any further questions about our DC combiner box? Simply contact us. We'll be happy to talk to you directly to answer your questions and find the perfect solution for each individual situation. At Weidmüller, we ensure the efficiency and safety of your PV farms with our DC combiner box.
Julius Beutel
Vice President Business Unit Photovoltaics
