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Aug 05 2025
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Link Box/ Link Box with SVL is used in systems where cables are directly grounded. They provide a low-impedance path to ground, preventing overvoltage and protecting against faults.
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 | ||
Main Electrical Properties of SVL
| Test Item | BHQ-7/600 | BHQ-10/600 |
| DC 1mA reference voltage | 4kV | 5.8kV |
| Rectangular wave capacity | 600A | 600A |
| Residual voltage ratio | K≤2 | K≤2 |
| Current capacity | 100kA | 100kA |
| Rated voltage | 2.8kV | 4kV |
| Residual voltage of nominal discharge | ≤7kV | ≤10kV |
Design
1. Volume-small
2. Weight-light
3. Installation-easy
Materials
1. With stainless steel enclosure.
2. Filled by resin inside, making it non-removable, fully sealed and theft-proof.
