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Aug 05 2025
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Cross bonding link box is used for cross inter connection of high-voltage single-core cable metal sheath, limiting over voltage applied to cable sheath and both insulated part ends of shield-break joint, controlling induced voltage on metal sheath, reducing or eliminating ring current on cable sheath, increasing transmission capacity of power cable, to ensure a safe operating for per cable.
Main Electrical Properties of Link Boxes
| Test Item | Technical Requirements | ||
| DC voltage withstand test | Neither breakdown nor flashover shall occur at 20kV for 1 min | ||
| Impulse voltage test | Neither breakdown nor flashover shall occur at 10 positive and 10 negative impulse of 40kV (peak value) | ||
| Insulation resistance test between copper bar and housing | Not less than 20MΩ | ||
| Contact resistance test of copper bar | Not less than 20MΩ | ||
Design
1. Volume-small
2. Weight-light
3. Installation-easy and SVL removable
4. Used for cross interconnection of high-voltage single-core cable metal sheath
Materials
1. With stainless steel enclosure
2. Filled by resin inside
