Last weekend, it was discovered that a number of micro-inverters for balcony power plants from manufacturer Deye are missing a safety relay required by the VDE standard. The missing relay is part of the test certificate for local approval. The specific consequences of this issue are currently unknown.
Deye has responded to the situation by stating that they believe it is primarily a regulatory issue and that there have been no reports of any danger or damage caused by their inverters. They are in contact with the Federal Network Agency to ensure they meet all regulatory requirements and clear up any misunderstandings. Deye plans to release a public statement in a few days.
The Federal Network Agency has confirmed that they are not currently aware of this problem. They have stated that if product defects are discovered through accredited measurements, appropriate market-restricting measures will be taken. They also mentioned that network operators have the right to prohibit operation of generating plants if technical rules have not been complied with.
As of now, no concrete measures have been taken by the Federal Network Agency or individual network operators. The practical effects for users of Deye inverters and other affected brands are still unclear. The reaction of the Federal Network Agency will determine the future of these devices. There have been no reports of any significant issues or damage caused by Deye inverters.
Overall, the missing safety relay issue with Deye inverters has raised concerns and the situation is still being investigated.
