The capacity that can contribute is the internal capacity of the inverter compared to
PE and external protective elements such as the lighting protection.
• During operation, the DC bus is connected to the AC network via the inverter. As a
result, part of the alternating voltage amplitude reaches the intermediate circuit.
The fluctuating tension is constantly changing
• Do not use the device if abnormalities are detected. Avoid
the state of charge of the parasitic PV capacitor (i.e. capacity to PE). This
• Do not install the device in unfavorable environmental conditions, such as
Make temporary repairs.
is associated with a displacement current that is proportional to the capacity and
• Only approved spare parts may be used for all repairs
e.g. B. in the immediate vicinity of flammable or explosive substances, in a corrosive
or desert-like environment, at extremely high or low temperatures
or in high humidity.
the applied voltage amplitude.
according to their intended use and by a licensed professional
• In every PV system, several elements contribute to the leakage current to protective
earth (PE). These elements can be divided into two main types.
• Do not use the device if the safety devices are not working.
or an authorized AKKU SYS service representative.
• Capacitive leakage current: The leakage current is mainly caused by the parasitic
• Residual current: In the event of an error, e.g. B. a defective insulation, where an under
kidney or are deactivated.
• Liability for commercially available components lies with the respective manufacturer
Capacity of the PV modules compared to PE. The module type, the environmental
conditions (rain, humidity) and even the distance of the modules from the roof
A live cable that comes into contact with a grounded person will flow
an additional current called residual current.
• Use personal protective equipment during installation, including
delegated.
can influence the discharge current. Other factors contributing to parasitic
Gloves and eye protection.
• Inform the manufacturer of any non-standard installation conditions.
The residual current factors of PV systems
• Whenever the inverter has been disconnected from the public grid, leave
Please use extreme caution as some components may retain sufficient charge
to create a risk of electric shock. Before touching any part of the inverter, please
make sure that the surfaces and devices are free of dirt
high temperatures or voltage potentials before proceeding.
2.2 PE connection and leakage current
page 6
atx009de0823
Machine Translated by Google
