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Regular checks are the be-all and end-all for the proper functioning of every photovoltaic system. And did you know that insurance companies can request proof of regular checks (E-Check PV) in the event of damage?
The electrical tests are carried out as part of annual maintenance work or after an individual order. The requirements for regular testing of photovoltaic systems result from general standards for the operation of stationary electrical systems, as well as special standards for the operation of photovoltaic systems. According to DGUV Regulation 3, PV systems must be checked for electrical safety every 4 years at the latest. This is especially important when an accident occurs. Since the insurance company is free to request proof of the repeat test.
With thermography, temperature increases in almost all electrical components of a photovoltaic system can be detected and verified. Excessive temperatures can occur in terminal points and cable routes, in the inverter or, of course, on the modules. These abnormalities indicate potential sources of danger and show where damage may have already occurred. Defects in the installation, which in the worst case can become a fire hazard, can be detected in good time using thermography and then rectified. With photovoltaic modules in particular, it is often not possible to see with the naked eye whether everything is in order and whether the maximum output can be produced. If individual cells no longer convert sunlight into electricity, they heat up and can be clearly identified by thermography. In addition, thermography can be used to detect defects in modules for complaints to the manufacturer. Proof can also be provided for insurance companies that the installed components are in proper condition and that nothing stands in the way of insuring the system.
To check the performance of solar modules, we carry out performance measurements on module strings and individual modules. In this way, underperforming modules are identified and can be replaced in a targeted manner. A performance measurement is essential to provide evidence of reduced performance in the event of a complaint. Based on the measured values, it can be verified whether the modules provide the performance guaranteed by the manufacturer during their lifetime. In the event of an error, a meaningful complaint can be submitted to the module manufacturer right from the start and processed quickly.
In the case of a photovoltaic system, not only must the function and condition be checked, but the associated planning documents must also be flawless. This is very important, especially in the case of malfunctions, in order to have the right approach to troubleshooting and to be able to eliminate the malfunction as quickly as possible. Plans that show the structure of the PV system are essential for this and can be very extensive depending on the size of the system. We check your system documentation for you on the basis of various standards and our own empirical values and prepare them for you if necessary.
Every photovoltaic system was built with the aim of achieving the forecast feed-in values. The ongoing yields are recorded and evaluated through continuous system monitoring. If irregularities are detected, a prompt response can be made. In addition, in the event of a system failure, we can provide you with subsequent calculations of the loss of yield during the downtime. You can then submit these calculations to your insurance company for any claims for damages.
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We would be happy to answer your questions about photovoltaics. Whether system, use or service: If you have any questions, you’ve come to the right place.
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