Double insulation high-voltage insulation between house-hold CATV cable and TV or set-top box
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Double insulation is used for the high-voltage insulation between house-hold CATV cable and TV or set-top box. CATV cable usually shares the same wire pole with power lines and telephone lines, and after a long-distance transmission, the situation may arise: induction into the high voltage, exposed to leakage wire, induction to the thunder and lightning, and being possibly connected to some of house-hold leakage equipment. All of these reasons will result in a live television cable. If the TV cable is poorly grounded, high-voltage will be transmitted into users and will form potential difference between the ground wire of network and ground wire of CATV network, causing ground wire disturbances, which leads to distorted television images or unclear sound and can possibly damage TV sets, set-top boxes and other equipments. Seebest double insulation can eliminate the potential difference between network and CATV network to improve the effect of television viewing and protect the house-hold appliances.