· The link box can be used for sing core cable system of 35-550kV right earthing system;
· The link box can used in different situation, such as tunnel, tower or Steel support;
· Different type link box can be used for different function according to the system design. As general, link box with or without SVL connet with single core earthing cable, while Cross-link box with SVL connect with coaxial earthing cable;
· Used in combination with these three type of link box as design can effectivly to prevent of the circulation of the eathing current in the cable metallic sheath.
Contact usOperating Conditions
· Environment temperature：-55~45°C
· Altitude：unlimited
Compatible Cables
· Cable Type: XLPE or other polymer-insulated, single-core copper/aluminum conductor MV power cables.
· Metallic Screen: Steel tape, Copper tape, Copper wires, Al wires, Al foil tape and etc.
Product Application Standards
Applicable standards: DL/T 2630、GB/T 11032
Technical Parameters Box
Item | 35~110kV | 220kV | 500kV |
Direct voltage(KV) | 25kV，1min，no breakdown | ||
Lightning impulse(KV) | 37.5kV，±10，no breakdown | 47.5kV，±10，no breakdown | 72.5kV，±10，no breakdown |
SVL
Product model | BHQ-7/200 | BHQ-7/400 | BHQ-7/600 | BHQ-10/600 | BHQ-20/800 |
Adaptable voltage(KV) | 35kV | 110kV | 110kV | 220kV | 500kV |
Rated voltage (KV) | 2.8 | 2.8 | 2.8 | 4.0 | 6.0 |
Continuous-running voltage(KV) | 2.24 | 2.24 | 2.24 | 3.2 | 4.8 |
Nominal discharge current（kV） | ≤7 | ≤7 | ≤7 | ≤10 | ≤20 |
2000μsrectangular wave curren（A） | 200 | 400 | 600 | 600 | 800 |
4/10μsHigh current tolerance（kA） | 65 | 100 | 100 | 100 | 100 |
Storage Conditions
· Optimal Storage Temperature: 10°C to 25°C
· Indoor with dry and clean environment, keep sealing and avoid ≥4 layers overlap.
Key Feature
1.The product casing is made of corrosion-resistant 304 stainless steel material;
2.The box body and the box cover are connected by bolts, which ensures a tight seal and also facilitates maintenance;
3.The SVL can be renewed easily if required.
Available Termination Selection (Recommended by Cable Insulation Diameter)
Name | Product Type | Voltage Level（kV） | Conductor Size Range（mm²) |
Link box without SVL | JD-35 3×120~240 | 35kV | 120~240 |
Link box without SVL | JD-110 3×120~400 | 110kV | 120~400 |
Link box without SVL | JD-220 3×185~500 | 220kV | 185~500 |
Link box without SVL | JD-500 3×240~500 | 500kV | 240~500 |
Link box with SVL | JDB-35 3×120~240 | 35kV | 120~240 |
Link box with SVL | JDB-110 3×120~400 | 110kV | 120~400 |
Link box with SVL | JDB-220 3×185~500 | 220kV | 185~500 |
Link box with SVL | JDB-500 3×240~500 | 500kV | 240~500 |
Cross-bonding Link box with SVL | JDH-35 3×120~240 | 35kV | 120~240 |
Cross-bonding Link box with SVL | JDH-110 3×120~400 | 110kV | 120~400 |
Cross-bonding Link box with SVL | JDH-220 3×185~500 | 220kV | 185~500 |
Cross-bonding Link box with SVL | JDH-500 3×240~500 | 500kV | 240~500 |
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