Sector Solutions · 05

Renewable Energy

Integrated earthing and lightning protection for the panel structures, inverters and transformer kiosks of large PV plants and wind turbines.

13 reference projects

The protection need

Solar and wind power plants stand in open country, spread over large areas and directly exposed to lightning. The module structures, the inverters, the DC and AC cable routes and the transformer kiosks have to be bonded to a common earthing system, and the separation distances have to be maintained.

Principal risks and design criteria

01
Wide site spread
Long cable routes and potential differences between structures.
02
DC side
Surges in the module strings and at the inverter inputs.
03
Separation distance
Maintaining the distance between air terminals and the module mounting structures.
04
Soil conditions
Reaching the target resistance in rocky ground or soil of high resistivity.