According to section 10.13 of the Terms of Network Service, users need to keep in mind that electricity supply is not uninterrupted. The electricity network is always exposed to meteorological and other phenomena causing interruptions.
Power cuts often cause rapid voltage fluctuations. CE-marked devices must withstand normal momentary voltage peaks during power cuts. Equipment manufacturers are required to test the devices for this before placing them on the market.
Users must take into account the operating conditions of their devices and ensure that the devices have proper electricity supply if they, for example due to the sensitivity of their devices, need electricity of a higher quality than the standard network service or uninterrupted electricity supply. The property owner is responsible for overvoltage protection in its internal network.