Drag chain cable is also called drag cable, tank chain cable. In order to prevent the cables from being entangled, worn, pulled off, hung and scattered, the cables are often put into the cable drag chain to protect the cables, and the cables can also move back and forth with the drag chain, which can move back and forth with the drag chain. Highly flexible special cable that is not easy to wear.
Drag chain cable structure is:
1. Tensile Center
In the center of the cable according to the number of cores and the space where each core crosses as much as possible, there is a real centerline filling (rather than the usual case, with some filler material or garbage cores made of waste plastic). ) This method can effectively protect the stranded wire structure and prevent the stranded wire from freeing to the central area of the cable.
2. Conductor structure
The cable should choose the most flexible conductor. Generally speaking, the thinner the conductor, the better the flexibility of the cable. However, if the conductor is too thin, the cable will be twisted. A series of long-term experiments have provided the optimum combination of diameter, length and nodal shielding for a single conductor, which has the best tensile strength.
3. Core wire insulation
Insulation materials within the cable must not stick to each other. And the insulation also needs to support each single strand of wire. Therefore, its reliability has only been proven in the application of high-pressure formed PVC or TPE materials for use in energy chains with millions of meters of cable.
4. Stranded wire
The stranded wire structure must be wound around a stable tensile center with an optimal crossover pitch. However, due to the application of insulating materials, the stranded wire structure should be designed according to the state of motion, starting from 12 core wires, so it should be bundled and stranded.
5 fillers or accessory fillers
Inner Sheath Armor-style extruded inner sheath replaces inexpensive wool material, fillers or accessory fillers. This method ensures that the stranded wire structure is not scattered.
6. Braided shield
The layer is tightly braided outside the inner jacket, and the loose braid will reduce the EMC protection ability and the shielding layer will also quickly fail due to the rupture of the shielding. The tightly woven shield is also torsionally resistant.
7. High-performance outer sheath
Outer Sheath Outer sheath is made of different modified materials with different functions, anti-UV function, anti-low temperature function, oil-resistant and cost-optimized. But all of these outer jackets have one thing in common, high abrasion resistance and won't stick to anything. The outer sheath must be highly flexible but also supportive, and should of course be high pressure formed.
The process of drag chain cable is:
●Rated voltage: 300V: size less than or equal to 0.38mm2, 500V: suitable for drag chain cables with size greater than or equal to 0.50mm2, 0.75mm, 1.0mm, 1.5mm
●Test voltage: 2000V;
●Conductor stranding method: ultra-fine copper wire stranding conforms to VDE 0295, class6 standard;
●Insulation resistance: minimum 100 Mohm X km;
●Working capacitance 800Hz: about 70 nF/km for core/core, about 110 nF/km for core/shield;
●Temperature range: mobile installation: -40°C to +80°C, fixed installation: -50°C to +80°C;
●Bending radius: 10x cable diameter
●Used for drag chain system service life: more than 10 million times
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