Shenzhen Woer Electric Technology Co., Ltd

Medium Voltage 1-core Heat Shrink Joints

The joint is designed for screened single 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.

Specification of Medium Voltage 1-core Heat Shrink Joints

specification-of-medium-voltage-1-core-heat-shrink-joints.jpg

Nominal voltage U0/U(Um)Cross section  (mm²)Kit No.Dimensions(mm)
3.6 / 6(7.2)kV50-1206kVRSJY-1/11000
150-2406kVRSJY-1/21000
300-4006kVRSJY-1/31000
5006kVRSJY-1/41000
6 / 10(12)kV50-9510kVRSJY-1/11000
6.35 / 11(12)kV120-18510kVRSJY-1/21000
240-30010kVRSJY-1/31000
400-50010kVRSJY-1/41000
63010kVRSJY-1/51000
8.7 / 15(17.5)kV25-5010kVRSJY-1/11000
70-12010kVRSJY-1/21000
150-24010kVRSJY-1/31000
300-40010kVRSJY-1/41000
500-63010kVRSJY-1/51000
12 / 20(24)kV35-5020kVRSJY-1/11000
12.7 / 22(24)kV70-12020kVRSJY-1/21000
150-24020kVRSJY-1/31000
300-40020kVRSJY-1/41200
500-63020kVRSJY-1/51200
800-100020kVRSJY-1/61200
120020kVRSJY-1/71200
18 / 30(36)kV35-5030kVRSJY-1/11400
19 / 33(36)kV70-12030kVRSJY-1/21400
150-24030kVRSJY-1/31400
300-40030kVRSJY-1/41400
500-63030kVRSJY-1/51400
800-100030kVRSJY-1/61400
120030kVRSJY-1/71400
20.8 / 36(42)kV5035kVRSJY-1/11400
26 / 35(42)kV70-12035kVRSJY-1/21400
150-24035kVRSJY-1/31400
300-40035kVRSJY-1/41500
500-63035kVRSJY-1/51500
800-100035kVRSJY-1/61500
120035kVRSJY-1/71500
Note:
1. Connectors need to be ordered separately.
2. RSJY-1 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


Features of Medium Voltage 1-core Heat Shrink Joints

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.

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