Power limitation in accordance with Section14a
INFO
Power limitation in accordance with Section14a - only applies to Germany
The power limitation in accordance with Section14a applies to all operators of controllable appliances commissioned after 1 January 2024.
Some energy suppliers require that certain larger energy consumers (heat pumps, wallbox or charging a battery on the inverter from the grid) can be controlled in accordance with Section14a by the energy supplier.
The inverter provides this option (e.g. power limitation) to implement/comply with the control specification issued by the energy supplier.
The energy supplier then limits the inverter’s power. If the energy supplier sends the power limitation signal to the inverter’s digital inputs via the ripple control receiver/control box, the power drawn from the grid is limited in accordance with Section14a of the German Energy Industry Act (EnWG).
The maximum rated input should be configured in the Webserver after commissioning by going to General > Digital inputs > Power limitation according to Section 14a. This should currently be limited to a maximum of 4200 W.
If power limitation is active, a battery connected to the inverter can only be charged from the grid using the set maximum power.
Another potential way of limiting power in accordance with Section 14a is control via the EEBus use cases Limitation of Power Consumption (LPC) and Limitation of Power Production (LPP). To do this, the inverter is connected to the Internet via LAN using an FNN control box (provided by the energy supplier) and control commands to the inverter are sent via this box.
The EEBus protocol is first activated in the inverter itself. Then simply pair the EEBus receiver (the CLS adapter) to establish the connection.
You will find more information about this under EEBus.