Steel crosspieces for medium voltage lines on spun concrete poles

The subject of the article is a natural-scale study of a steel crosspiece for a flat system of phase conductors in a sheath with a cross-section of 120 mm 2 in a single-circuit medium voltage power line 15 and 20 kV with a span length of 90 m and the line bend angle of 178 0 . The crosspiece was mounted on a straight-line pole made of a prestressed concrete column E12/12. During the tests, the method of attaching the crosspiece to the power spun pole and its actual deformation and strength characteristics were checked. The test program was carried out by performing two different load tests (test 1 and 2 depending on the loads acting on the pole and the crosspiece), and then, after test 2, the load was incrementally added until failure.