Information

Due to being subjected to temperature changes, both the busbar and the building suffer thermal expansions. The expansion element can absorb expansion and contraction of both the busbar trunking system section and the building, up to the maximum permitted length (± 50 mm approx.). The expansion element must be fitted near the expansion joints of the building and in straight sections of the line (horizontal and/or vertical) longer than 40 m. For straight line sections longer than 40 m, expansion elements must be fitted in a way that splits the path into equal sections not longer than 40 m. XCP-HP busbar trunking system elements are designed to compensate for thermal expansion if the straight sections of the installation are less than 40 m; in this case no expansion element is necessary.