The biggest challenges of our time include climate protection and the energy transition. Utility scale PV systems are a step in the right direction here. That's why we at Weidmüller want to help you in developing photovoltaic energy.
Our product range provides reliable connectivity, protects your plants and offers monitoring solutions. This reduces manual work required for monitoring, maintenance and servicing. With our innovative product range, you can operate your photovoltaics parks longer and more efficiently without downtimes. From distribution boxes to monitoring solutions and components of all kinds – our products and solutions meet the highest requirements. We combine our extensive range of components with decentralization and Industrial IoT solutions.
A reliable, high-quality partner, we've been active in the quickly growing international market for more than 15 years. This makes us the perfect contact partner for utility scale photovoltaics. With an extended standard warranty of 5 years, we guarantee the best possible quality in our installations. Our extensive portfolio contains all the components you need, so you're sure to find the product that meets your requirements. Our solutions for large-scale photovoltaics are customer-specific, and our global assembly and service locations enable project localization. Benefit from our full offering for utility scale photovoltaic systems.
Our solutions for utility scale photovoltaic systems enable the connection and combination of PV strings or groups of strings from the field.
Our full product range for utility scale photovoltaics offers top protection against voltage surges and contact.
Monitor the string performance and component status of your large-scale PV plant.
Trust in the quality of our products for utility scale PV systems with our extended standard warranty of five years.
We stand out thanks to our sustainable commitment and many years of experience in the sector.
Find out about our impressive product highlights. We face your challenges with the perfect combination of innovation and experience. This means that you can rest assured that our range of products for PV parks will meet all of your requirements. Our solutions allow you to operate your plants efficiently with low electricity production costs (levelized cost of electricity/LCOE). With our PV string monitoring system, you can keep an eye on your plant, and our various combiner boxes meet the requirements placed upon them by the most diverse of usage environments. Our products allow you to create utility scale PV plants that precisely meet your needs!
Whatever the concept is for your ground-mounted photovoltaics, we have the ideal solution. Looking for a compact, cost-optimized solution for creating or optimizing your central inverter PV plant? Our high-quality DC combiner boxes are the answer. Or perhaps you want to equip your string inverter PV plants with AC combiner boxes that provide reliable, robust protection against voltage surges and short circuits. Our range includes this product, too. And there's more: Our string inverters are really easy to separate from the system when you need to perform thorough maintenance. Inverters, half-cut cell technology and solutions for bifacial modules – our product range can meet all requirements.
Our past projects show that our large-scale photovoltaics products are really successful in the real world. For example, we've already been able to participate in the installation of a floating solar photovoltaic plant in the Netherlands. Our solutions for floating PV projects have been tested and meet all electronic safety requirements. This helps to ensure that the PV farm will withstand harsh ambient conditions and achieve the long desired lifetime. Because the project has been so successful already, it is planned to increase the number of islands in the future.
Our satisfied customers are the best proof of the quality of our solutions. Here you will find examples of successfully implemented projects.
We would like to vividly and clearly explain how our solutions work. After all, you should not make an investment in something you don't trust or understand. For this reason, we've recorded some Webinars to answer all your questions. Find out how our solutions for large-scale photovoltaics can make your systems more efficient in the long term. Or watch the "Performance Monitoring for Photovoltaics" Webinar to learn how our Transclinic monitoring system enables precise fault diagnostics. We aim to maximize transparency and trust in our solutions for utility scale PV parks!
In total, there are three different types of surge protection device: Type 1 is specifically recommended for service and industrial buildings, type 2 is the main protection system for all low-voltage electrical installations and the type 3 surge protection device has a low discharge capacity and must therefore be used as a mandatory supplement to type 2.
For more information on the different types of surge protection device, see the factsheet.
When a combiner box has a power supply and is connected to the network It is not possible to open any fuse holder. Doing this would create an electrical arc which could damage the combiner box and the person handling it. It is important to highlight that the fuse holder does not have any electric arc dissipation function, this function is fulfilled by the switch-disconnector, which disconnects the combiner box from the network making its manipulation possible.
You can find more detailed information of the Fuse Holder in our factsheet.
The combiner boxes from Weidmüller have a Class II protection system. This system includes additional protective insulation that supplements the functional insulation. This ensures that no live metallic parts are accessible in the event of a failure of the first insulation.
For more important information about our combiner box enclosures, please refer to the factseet.
The DC combiner box for ground-mounted PV systems can be mounted in different ways. However, it is important to follow some recommendations during installation, such as installing as close as possible to the strings. The location must be easily accessible for installation and maintenance work and must not be close to highly flammable materials, gases and vapors.
Further important recommendations for installation and information on our DC combiner box accessories can be found in our factsheet.
The implementation of a string monitoring system in a ground-mounted photovoltaic system can offer significant advantages, as problems can be detected and remedied in time, such as: shading, interconnection, temperature and production problems.
For more detailed information on the advantages of our string monitoring system in a ground-mounted photovoltaic system, please refer to the factsheet.
The PV floating combiner boxes are specially designed for use in floating PV systems on freshwater surfaces. They can be installed in both salt and freshwater environments as the housing material is made of glass fiber reinforced polyester (GPR). The boxes are equipped with central inverters, comply with the IEC 61439-2 standard and are designed to withstand high humidity, corrosive atmospheres and intense sunlight. The protection class of the enclosures is IP65, which cannot be increased.
Fore more information about the PV floating combiner boxes, please see the following factsheet.
The basic structure of a PV ground-mounted system, whether with a central inverter or string inverter, is the same for all of them. In a central inverter system, the solar panels are connected to each other as a string, which in turn is connected to the PV DC generator connection boxes. All these generator junction boxes are connected to a central inverter, which then converts the direct current into alternating current. The only difference with the string inverter system is that the strings are connected directly to the string inverter input.
To learn more about the specific differences between central inverters and string inverters in a ground-mounted PV system and whether DC combiner boxes can also be used with 1 MPPT string inverters, please read the factsheet.
The DAE is a pressure compensation element. A vacuum is regularly created in the enclosure at the combiner box by the air and moisture can penetrate the enclosure through the seal as a result of cooling, so that the IP protection is no longer guaranteed. The DAE compensates for these temperature differences.
Further information on the DAE can be found in the following factsheet.
It is possible to connect the monitoring system to a protective earth. However, it can only connect the Leader system devices and no others. The correct way to connect a monitoring system to a protective earth is to connect the C-terminal to the protective earth on the RS-485 Leader end.
For more detailed information, please refer to the factsheet.
The DI are defined in the register "FLG_EV" in the Modbus map of the PV String Monitoring Systems device. This register is a bit field, i.e. each event has its own bit. The DI are set as binary 1, which means that the digital inputs are open. When a device is connected to these inputs, the value is set as binary 0.
For more information about the Solar SMS, see the following factsheet.
For the DC combiner boxes, we have developed a variety of models with special features in order to be able to offer you a wide selection of combiner boxes.
In the following factsheet, we inform you about the special features of our DC combiner boxes, as well as other additional features.
In string inverter installations it is possible to have combiner boxes before or after the inverters. The AC combiner box is the one to be used after the string inverters. It must be robust to protect all downstream and upstream elements and easily accessible for routine maintenance and inspection.
For more important information and specifics about our AC combiner boxes, please read the factsheet.
Our DC floating generator junction boxes have the same quality and adaptability as normal generator junction boxes, with the added benefit of being able to withstand salt water splashes, climatic changes and prolonged exposure to sunlight without compromising their performance or components.
For more detailed information about our PV DC floating generator junction boxes and their special features, please read the factsheet.
The switch-disconnector is the heart of the combiner box. Its main function is to protect the power grid from failures that may occur from the power supply. Therefore, it is important to know how to connect the power supply cables correctly.
Please read the factsheet to find more important information about our switch-disconnector and the power supply cables.
We can help you to achieve PV parks with more efficient plant operation and lower electricity production costs (LCOE). Do you have any further questions about our products for utility scale photovoltaics? If so, please don't hesitate to contact us! We would be happy to speak with you, directly to address your questions, and find a solution for your concerns. Regardless of the concept you're working with, Weidmüller has the answers to your questions!