The laying of cable chain cables has to be planned carefully in order to guarantee an optimal functioning and longevity. It is important to check if the specification of the cable is appropriate for the required application.
Therefore, especially 3 parameters have to be considered:
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It is recommended to adapt the cable chain to the cable and not the other way round. There shall be a free space between the cable and the chamber of the energy chains at least 15 % of the cable diameter around the cable which goes up with an increasing travelling path. In order to guarantee an even weight distribution it is necessary to mount the heavy cables in the external parts and the light ones in the internal parts of the chamber. The minimum bending radius has to be respected in order to guarantee a long service life. The indication of the min. bending radius is x-time the cable diameter and is only valid for normal temperatures (approx. +20°C). There is one rule: “The higher the bending radius of the cable chain, the higher the life expectancy of the cable. |
Handling and installation of cables in energy chains:The cable shall be unwound tangentially without twist, cut to the required length and left behind for about 24 hours to unwind any remaining bends. If this is not possible install the cable in bending direction. The cables have to be inserted parallel next to each other in the energy chains (not pulled in ) and placed in the neutral zone in order to avoid traction and thrust. In order to avoid the crossing of the cables among each other the vertical free space shall not exceed 50 % of the cable diameter. It is advantageous if the cable chain allows the laying of one cable per chamber. A strain relief shall only be attached after a length of 20 x diameter in order to guarantee a length compensation. The strain relief shall at least be mounted at the moved end of the cable chain in order to avoid high load on the cable. Regular inspections and maintenance work are important to maintain the functionality of the cables. In case of a defective energy chain also the cables shall be exchanged as the tensile forces could be transferred on them. An adequate storing of the products and the avoidance of torsion for example due to multiple winding and unwinding of the cables are also important in order to maintain the quality of the products. |
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