The power of the sun

Solar thermal companies depend on the reliable and robust connectors in the Han® series from HARTING for power connections and on PushPull connectors for data transmission via fiber optic cables.

In solar thermal power plants, thousands of individual mirrors concentrate sunlight on to a single point in a tower where water or oil flowing through it is vaporized. The high temperatures are used to drive conventional steam turbines which generate electricity. In order to work most efficiently, the mirrors must always be directed towards the focal point on the tower, so each heliostat in the plant, which can extend up to 100 hectares, is fitted with positioning drives to move the mirrors. On each heliostat, there are distribution boxes for data and energy connected with reliable HARTING connectors. The plastic or metal housing and the seals of the connectors are designed to be ozone and UV-resistant and also dust-proof. As a typical outdoor application, they must also be able to withstand extreme fluctuations in temperature with no problems. The LOC boxes are therefore hermetically sealed; a diaphragm provides pressure equalization and prevents water penetration. The operators use the Han® series for the power connection; data is exchanged via either RJ45-PushPull connectors or optical PushPull LC duplex connectors.  

As a typical outdoor application, they must also be able to withstand extreme fluctuations in temperature with no problems.

The cables are connected up in a daisy-chain configuration. This allows the service personnel to connect input and output connectors to each other and cut out a defective station without any effect on the others.

In brief

  • User-friendly installation and maintenance

  • Outdoor application for extreme fluctuations in temperature