On December 23, the Shenzhen Municipal Administration for Market Regulation website released the results of the quality supervision spot check of 9 categories of products including driving recorders and photovoltaic grid-connected inverters in Shenzhen in 2022. This time, 5 batches of photovoltaic grid-connected inverter products from 3 manufacturers in Shenzhen were spot checked, and no unqualified products were found.
This spot check was conducted based on the requirements of standards such as the "Technical Specifications for Photovoltaic Grid-connected Inverters" (NB/T32004-2018), focusing on nine items of photovoltaic grid-connected inverter products, including "protective connection and grounding", "contact current", "impact withstand voltage", "electrical parameters", "efficiency requirements", "harmonics and waveform distortion", "power factor", "DC component", and "AC output side over/undervoltage protection". No unqualified items were found.
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