Пересечение заземления Box для оболочки кабеля

The link box for cable sheathing made by Beijing Nobbel Electrical Tech Develop Co., Ltd. is used for protecting a high voltage cable sheathing be safe from damage by a overvoltage in high voltage power system. The link box for cable sheathing is different from other similar grounding box at home and abroad. With the main Zn0 cable sheathing tutamen, the box made by the best waterproof silastic seal, stainless steel hull and tinned copper conductor connector. With nut crimping, it is easy to install and easy to detach metal sheath from the tutamen when the preventive testing. Both used for indoor and outdoor, no affected from a variety of abnormal climate. 1. Advantages: 1. Free of maintenance 2. Light 3. Easy to install 4. Protection box can be designed to counter 2. Type: 1. ZJJD direct connection box, used for grounding cable sheath directly; 2. BHJD protect connection box, used for grounding cable sheath protectively; 3. JHJD crossing connection box, used for cross connection grounding the middle of a cable sheath protectively; 3. service conditions Indoor or outdoor Ambient air temperature: –50 centigrade +50 centigrade 4. Technical indexes 5s power frequecy withstand voltage: 3kV UDC,1mA: 4.5kV Residual voltage under 8/20us/10kA: 9.5kV 18 times of 2ms/600A square wave current 65kA of 4/10us impulse current Area for grounding cable: ≤240mm2 All parameters are in accordance with GB 50217-94