Mine cable sheath | Fuxin Mining Cable | Shenyang cable Yinhuan

China's first master 1100KV State Grid HVDC technology has revealed mining cables, UHV DC transmission technology has made a major breakthrough, making China the world's first successful mastery 1100 kV DC transmission technology of the country, electricity transmission capacity and transportation distance will be improved significantly. After thousands of discharge impact test, the State Grid technicians successfully obtained external insulation parameters 1100 kV UHV DC transmission lines. Insulation is one of the core technology of UHV mine cable type, voltage rating, the higher the required insulation requirements. This breakthrough technology means that China has fully overcome the technical difficulties 1100 kV UHV DC power transmission. After nearly two years after the test, the technical staff also includes a converter valve broke the design and manufacture of equipment insulation, wire selection, including a series of core technology. The results of the use on the construction of high voltage transmission line, than they are now operational capacity of plus or minus 800 kV UHV DC line expanded 1.8 times, reaching 1,375 million kilowatts, a substantial increase in transport distances. It is understood that the 2020 mining cable manufacturers, the country plans to build five applications of this technology in 1100 kV UHV DC transmission line, the annual delivery of electricity to more than 300 billion degrees. How to identify fake building security cable? 1, PVC sheath: the pressing surface can be seen inside the braid regular 'irregularities' described process, and will not produce sliding, good cable; the appearance of smooth, do not see the pressing braid' irregularities', Yong Shounie jacket has loose movement, is the difference between cable. 2. Check the shield braid: Program number is enough, copper netting, check weldability, tinned copper scraping to see which is not copper, aluminum-magnesium alloy hardness significantly greater than copper; netting sparse, uneven distribution of high-voltage cables mine package is not tight, and the insulating layer and the like is poor cable. 3, check the wire: cable diameter --- SYV 0.78 to 0.8mm, SYWV cable is 1.0mm; SYV75-5 recently there has been a core diameter is 1.0mm cable, characteristic impedance of this cable, certainly not 75 ohms, does not apply to 75 ohm transmission system. 4, check the adhesive force of the core wire and the insulating layer: obliquely cutting the insulating layer, the peeling direction pulled by the core wire, the core wire and the insulating layer to see there is no process of bonding material; cables have greater bonding strength, poor cable No bonding. Longitudinal tensile test: Take a meter cable, layered stripped wire, insulation, shielding layer, the outer jacket, left on each 10 cm long. The method is: two hands holding two adjacent cables, pull in the opposite direction; the cable pull force generally does not move, does not charge vigorously poor cable can easily pull out. Mine cable sheath | Fuxin Mining Cable | Shenyang Cable Cable coral coral from Shenyang Shen Enterprise Group Limited. Shenyang cable Yinhuan Enterprises Holdings Ltd. (slyhjt.com) strong, credible, in Shenyang, Liaoning province power cable industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead sink cable into the brilliant coral and you work for a better future!