In recent years, we have seen a significant shift in global energy preferences, driven by growing concern about climate change and the search for more sustainable energy sources.
In this scenario, solar energy has emerged as a promising and environmentally friendly solution to meet growing electricity needs.
With technological advances and incentive policies, the solar energy market has experienced impressive growth, revolutionizing the way we generate and consume energy.
WEG, a Brazilian multinational, has participated side by side in this growth. And with this expansion of photovoltaic sources in Brazil, concerns about safety in the installation and operation of solar energy systems also increase.
In this scenario, the subject of AFCI has been gaining prominence in the national market. Several inverter manufacturers are already offering AFCI systems in their products.
The AFCI (Arc Fault Circuit Interrupter) is an electronic safety device that can be installed in photovoltaic inverters.
Its function is to monitor the occurrence of electrical arcs in series, which are generated by inadequate connections in photovoltaic module systems.
The main area of concern that makes AFCI necessary is in the PV module connectors. In addition, inadequate connections can also occur in string boxes, fuse holders, SPDs (surge protection devices) and other poorly connected elements in the direct current circuit.
AFCI plays a crucial role in detecting and immediately interrupting the circuit in the event of an electric arc, thus preventing the spread of fires and minimizing damage to photovoltaic system components.
To ensure system safety, in addition to AFCI, the use of a disconnector switch is mandatory and normative. The disconnector switch allows you to completely disconnect the power supply to the inverter and photovoltaic modules.
In emergency or maintenance situations, the disconnector switch offers the ability to quickly interrupt the electrical current, effectively isolating the photovoltaic system.
Furthermore, the use of DPS is essential. These devices are designed to protect the system against voltage spikes and electrical surges. They divert excessive current to the ground, preventing damage to equipment and minimizing the risk of fires.
SPDs help ensure the integrity of the PV system by protecting both inverters and PV modules against damage caused by electrical surges.
It is important to highlight that all WEG inverters have a disconnector switch and integrated class 2 DPS, the SIW300 line inverters are also equipped with additional protections, such as AFCI technology.
These security measures provide a much safer and more reliable installation. By the end of 2023, all of WEG's lines of photovoltaic inverters must be equipped with this technology and additional protections, reinforcing the company's commitment to the safety of photovoltaic systems.
The opinions and information expressed are the sole responsibility of the author and do not necessarily represent the official position of the author. Canal Solar.
Comments (2)
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Hello
Great article. It would have been excellent if I had pointed out the regulations. Anyway, congratulations.
At.te
Congratulations on the content!!! It is important for the PHOTOVOLTAIC SECTOR to be aligned with quality and safe products. All incidents that occur harm the entire sector, and that is why it is very interesting to address this type of subject so that it can also spread across all media, reaching the consumer. Congratulations!!!! @REIDOAGRO.ANDRIOLLI