This test rig was able to be built thanks to the use of igus® e-chains®. Because these are the only ones that allow the test surface to be turned through 380°. The test rig is used to test solar collectors and solar systems. During the test, the movement of following the sun is simulated. The safe lifting and lowering of the test surface with all the hydraulic and electrical cables it contains is also secured through igus® e-chains®.