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Cross linked polyethylene5/6/2023 In the short circuit, the maximum temperature of the cable conductor does not exceed 250 degrees and the duration does not exceed 5 seconds.Īt the highest rated temperature, the volume resistivity r is not less than 1012 W.cm the insulation resistance constant Ki is not less than 36.7 MW.km.ġ) The finished cable is subjected to 3500V AC frequency voltage test for 5 minutes without breakdown Ģ) The heat resistance, cold resistance, chemical resistance, insulation resistance and service life of cross-linked polyethylene insulated control cables are far superior to those of PVC insulated control cables.Ĭross-linked polyethylene insulated PVC sheathed control cableĬross-linked polyethylene insulated PVC sheathed copper wire braided shielded control cableĬross-linked polyethylene insulated PVC sheathed steel tape armored control cableĬross-linked polyethylene insulated PVC sheathed copper tape shielded control cable The long-term allowable working temperature of the cable conductor is 90 degrees. Laying temperature and minimum bending radius: no pre-heating is required when the laying temperature is not lower than 0 degrees the laying is not limited by the drop, and the minimum bending radius: the cable without armoring layer should not be less than 6 times the cable outer diameter Cables with armored or copper shielded structure shall not be less than twice the outer diameter of the cable flexible cables with shielded structure shall not be less than 10 times the outer diameter of the cable Then, the following is to introduce the application of cross-linked polyethylene insulation control cable.Ĭross-linked polyethylene insulated PVC sheathed control cable is suitable for distribution equipment with AC rated voltage of 450/750V and below as the connection line of electrical instruments.ġ. The use of different cable types is also different, so it is necessary to clarify their own needs in order to find the appropriate cable model. It should be noted that this effect is not limited to PE materials.Application of cross-linked polyethylene insulated control cables Water treeing is a defect which is the result of imperfections in the insulation where fracture lines occur and grow in the direction of the electric field, increasing with electrical stress. Improved water-tree resistance is another benefit of XLPE insulation for LV cables and MV cables over PE insulations. The XLPE insulation will not melt or drip, even at the temperatures of soldering irons, and it has increased flow resistance and improved ageing characteristics. The addition of carbon black can be used to further enhance hot deformation and cut through resistance. The mechanical properties of the XLPE are superior to many other insulations, offering greater tensile strength, elongation and impact resistances. Cross-linking the polyethylene also enhances the chemical and oil resistance at elevated temperatures and makes it suitable for use as a Low Smoke Zero Halogen material. XLPE is suitable for voltage ranges from low to extra high voltage, surpassing other insulation materials such as PVC, Ethylene Propylene Rubber ( EPR) and silicone rubbers.
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