Overvoltage protective wiring structure for photovoltaic plants, has wires of same polarity that are connected on common varistor, and wires of same polarity with different input channels that are decoupled thought spark gap

摘要

The overvoltage protective wiring structure has the inverters (4) that are provided with several input channels. The electrical connection region is formed between the photovoltaic modules (5,6) and the direct current (DC) voltage input side of the inverter. A varistor (1,2) is connected with pole spacer wire against the ground potential. The wires of the same polarity are connected on a common varistor. The wires of the same polarity with different input channels are decoupled thought the spark gap (7-10).