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Aug 05 2025
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The joint is designed for screened three core polymeric insulated MV cables up to 35kV.
Stress control tube, together with stress relief mastic, is used to smooth out the electrical field at the cable screen ends. Heat shrink insulation tube delivers consistent insulation thickness over the core insulation. Heat shrink dual layer tube is adopted to help ensure a void-free interface between the insulation and screen.
Copper mesh wrapped around the joint area rebuilds the metallic screen. Either soldering or solderless earth connection is available to provide screen continuity across the joint. The outer sealing and protection is performed by an adhesive coated heat shrink tube.
| Nominal voltage U0/U(Um) | Cross section (mm²) | Kit No. | L Dimensions(mm) |
| 3.6 / 6(7.2)kV | 50-120 150-240 300-400 500 | 6kVRSJY-3/1 6kVRSJY-3/2 6kVRSJY-3/3 6kVRSJY-3/4 | 1800 1800 1800 1800 |
| 6 / 10(12)kV 6.35 / 11(12)kV | 50-95 120-185 240-300 400-500 630 | 10kVRSJY-3/1 10kVRSJY-3/2 10kVRSJY-3/3 10kVRSJY-3/4 10kVRSJY-3/5 | 1800 1800 1800 1800 1800 |
| 8.7 / 15(17.5)kV | 25-50 70-120 150-240 300-400 500-630 | 10kVRSJY-3/1 10kVRSJY-3/2 10kVRSJY-3/3 10kVRSJY-3/4 10kVRSJY-3/5 | 1800 1800 1800 1800 1800 |
| 12 / 20(24)kV 12.7 / 22(24)kV | 35-50 70-120 150-240 300-400 500-630 | 20kVRSJY-3/1 20kVRSJY-3/2 20kVRSJY-3/3 20kVRSJY-3/4 20kVRSJY-3/5 | 1800 1800 1800 2600 2600 |
| 18 / 30(36)kV 19 / 33(36)kV | 35-50 70-120 150-240 300-400 500-630 | 30kVRSJY-3/1 30kVRSJY-3/2 30kVRSJY-3/3 30kVRSJY-3/4 30kVRSJY-3/5 | 2700 2700 2700 2700 2700 |
| 20.8 / 36(42)kV 26 / 35(42)kV | 50 70-120 150-240 300-400 500-630 | 35kVRSJY-3/1 35kVRSJY-3/2 35kVRSJY-3/3 35kVRSJY-3/4 35kVRSJY-3/5 | 2700 2700 2700 2800 2800 |
| Note: 1. Connectors need to be ordered separately. 2. RSJY-3 is for cables with copper wire screen without armour. 3. For cables with other construction, please order kits separately. Remark: Above cross-section range selection is for reference, the final determination factor is the diameter over insulation | |||
Electrical stress control
Stress control tube, together with stress relief mastic, is used to smooth out the electrical field at the cable screen ends.
Insulation and screen
Heat shrink insulation tube delivers consistent insulation thickness to meet or exceed that of the cable.
Heat shrink semi-conductive /insulation dual layer tube is also adopted to help ensure a void-free interface between the insulation and screen.
Metallic shielding
Copper mesh wrapped around the joint area rebuilds the metallic screen. Either soldering or solderless earth connection is available to provide screen continuity across the joint.
Outer sealing and protection
The outer sealing and protection is performed by an adhesive coated heat shrink tube. It provides mechanical protection and chemical resistance as expected from cable oversheath.
