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电缆护层保护器可将安装电缆护层感应电压(峰值)限制在标称雷电残压之下。若系统存在超出保护器耐受能力的工频过电压，应将保护器进行串联使用，否则易损坏。化、防爆和良好的化学稳定性、憎水性、密封性。订货时请提供电缆的电压等级，或者提供电缆护层保护器氧化锌电阻片的参数及订货数量，交货数量，交货时间。如有特殊要
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Due to electromagnetic induction, the metal shield (or metal sheath) of a long-line high-voltage single-core power cable will generate a high induced voltage. Once the induced voltage exceeds the breakdown voltage of the cable outer sheath, the outer sheath will be broken down, resulting in a single-core cable multi-point grounding fault. Therefore, DL/T401 "Guidelines for the Selection of High-voltage Power Cables" stipulates that a cable sheath protector must be used to limit the overvoltage amplitude on the metal shield (or metal sheath) of the power cable.
Due to electromagnetic induction, the metal shield (or metal sheath) of a long-line high-voltage single-core power cable will generate a high induced voltage. Once the induced voltage exceeds the breakdown voltage of the cable outer sheath, the outer sheath will be broken down, resulting in a single-core cable multi-point grounding fault. Therefore, DL/T401 "Guidelines for the Selection of High-voltage Power Cables" stipulates that a cable sheath protector must be used to limit the overvoltage amplitude on the metal shield (or metal sheath) of the power cable.
Using ZnO resistors as protection elements, there is no series gap, fast response speed, good protection characteristics, and excellent nonlinear volt-ampere characteristic curve. This product not only has the advantages of porcelain sleeve metal oxide arresters, but also has good electrical insulation performance, high dielectric strength, anti-leakage, anti-corrosion, heat resistance, cold resistance, aging resistance, explosion-proof and good chemical stability, hydrophobicity, and sealing.
The cable sheath protector can limit the induced voltage (peak value) of the installed cable sheath to below the nominal lightning residual voltage. If the system has a power frequency overvoltage that exceeds the protector's tolerance, the protector should be used in series, otherwise it is easy to be damaged. Chemical, explosion-proof and good chemical stability, hydrophobicity, and sealing.
When ordering, please provide the voltage level of the cable, or provide the parameters of the zinc oxide resistor of the cable sheath protector and the order quantity, delivery quantity, and delivery time. If there are special requirements, they should be raised when ordering.
When ordering, please provide the voltage level of the cable, or provide the parameters of the zinc oxide resistor of the cable sheath protector and the order quantity, delivery quantity, and delivery time. If there are special requirements, they should be raised when ordering.