The invention concerns an
inverter for solar panels which includes at least two
inverter inputs to each of which a group of solar panels can be connected, and an
inverter output to which a network can be connected. The inverter includes an inverter element with a direct
voltage input and an alternating
voltage output which converts the direct
voltage which is connected to its direct voltage input into alternating voltage and sends it to the inverter output, an
electronic control system which monitors the direct voltage which is connected to the direct voltage input of the inverter element and the network voltage and / or the network frequency of the network which is connected to the inverter output, and a switching
system which is electrically arrayed between one of the at least two inverter inputs and the direct voltage input of the inverter element, wherein the at least two inverter inputs of the inverter are connected in series with the direct voltage input of the inverter element. The
electronic control system is designed so that it triggers the switching
system to disconnect the at least one inverter input of the inverter from the direct voltage input of the inverter element if the voltage which is connected to the direct voltage input of the inverter element exceeds an upper threshold value and / or the network voltage and / or the network frequency of the network which is connected to the inverter output lies outside a previously specified normal voltage or normal frequency range.The invention furthermore concerns a process to control an inverter for solar panels.