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Heat shrink joint

Heat shrink joint

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Application areas:

Widely used in the construction of 1-35kV power cable transmission and distribution network infrastructure

Product Description

1. Meets environmental protection requirements.
2. Using polyolefin with excellent insulation properties as the base material, the product has excellent anti-creep, anti-tracking, and anti-aging properties after irradiation crosslinking modification.
3. The 6-35kV heat shrinkable cable joint adopts the parametric stress control method to alleviate the problem of electrical stress concentration. The product is composed of multiple layers of tubing.
4. The product must be installed while it is heated.

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Product Parameters

The electrical performance of the product meets the requirements of IEC60502 and GB/J12706.4 standards.

Main electrical parameters:

Test Project Standard requirements and test results
8.7/15kV 12/20 kV 18/30 kV 26/35 kV
5-minute power frequency withstand voltage test 39kV 54kV 81kV 117kV
No penetration, no flashover
Partial discharge test 15 kV 20 kV 30 kV 45 kV
Undetectable discharge
Air load cycling test 22 kV 30 kV 45 kV 65 kV
The conductor was heated to 95℃～100℃ and subjected to 60 cycles without breakdown or flashover.
Water load cycling test 22 kV 30 kV 45 kV 65 kV
The conductor was heated to 95℃～100℃ and subjected to 60 cycles without breakdown or flashover.
Impulse voltage test 95 kV 125 kV 170 kV 200 kV
Ten tests each for positive and negative polarities were conducted; no breakdown or flashover was observed.
Maximum allowable temperature during normal operation 90℃ 90℃ 90℃ 90℃
Maximum permissible temperature during short circuit 250℃ 250℃ 250℃ 250℃


Main electrical parameters of 0.6/1kV products:

Test Project Standard requirements Experimental results in conclusion
1-minute power frequency withstand voltage test 4kV without flashover or breakdown 4kV/1min, no flashover, no breakdown pass
Load cycling test (three cycles) Heating for 5 hours, cooling for 3 hours, conductor temperature during heating: 75℃ Based on the following assessment pass
4-hour power frequency withstand voltage test 2.4kV No flashover, no breakdown 2.4kV/4h, no flashover, no breakdown pass

Wolong Electric is committed to continuous product improvement, therefore we reserve the right to change designs, dimensions, and data without prior notice.

 

Product Selection

Selection table for 0.6～35kV heat shrinkable joints:

voltage level Number of wire cores Cable cross-section/mm2 Product Code
26/35kV 3,1 25-50 70-120 150-240 300-400 500-630 26/35kVRSJY-3/1(1/1) 26/35kVRSJY-3/2(1/2) 26/35kVRSJY-3/3(1/3) 26/35kVRSJY-3/4(1/4) 26/35kVRSJY-3/5(1/5)
18/30kV modified to 18/20(30)kV 3,1 25-50 70-120 150-240 300-400 500-630 18/20 (30) kVRSJY-3/1 (1/1) 18/20 (30) kVRSJY-3/2 (1/2) 18/20 (30) kVRSJY-3/3 (1/3) 18/20 (30) kVRSJY-3/4 (1/4) 18/20(30)kVRSJY-3/5(1/5)

0.6/1kV Heat Shrink Joint Product Selection Table:

Product Name Specifications and Models Applicable cable cross-section
Heat shrink single core connector 0.6/1kVRSJ-1/（-1） 4-6mm2
0.6/1kVRSJ-1/0 10-16mm2
0.6/1kVRSJ-1/1 25-50mm²
0.6/1kVRSJ-1/2 70-120mm2
0.6/1kVRSJ-1/3 150-240mm²
0.6/1kVRSJ-1/4 300-400mm2
Heat shrink two-core connector 0.6/1kVRSJ-2/（-1） 4-6mm2
0.6/1kVRSJ-2/0 10-16mm2
0.6/1kVRSJ-2/1 25-50mm²
0.6/1kVRSJ-2/2 70-120mm2
0.6/1kVRSJ-2/3 150-240mm²
0.6/1kVRSJ-2/4 300-400mm2
Heat shrink three-core intermediate connector 0.6/1kVRSJ-3/（-1） 4-6mm2
0.6/1kVRSJ-3/0 10-16mm2
0.6/1kVRSJ-3/1 25-50mm²
0.6/1kVRSJ-3/2 70-120mm2
0.6/1kVRSJ-3/3 150-240mm²
0.6/1kVRSJ-3/4 300-400mm2
Heat shrink four-core intermediate connector 0.6/1kVRSJ-4/（-1） 4-6mm2
0.6/1kVRSJ-4/0 10-16mm2
0.6/1kVRSJ-4/1 25-50mm²
0.6/1kVRSJ-4/2 70-120mm2
0.6/1kVRSJ-4/3 150-240mm²
0.6/1kVRSJ-4/4 300-400mm2
Heat shrink five-core intermediate connector 0.6/1kVRSJ-5/（-1） 4-6mm2
0.6/1kVRSJ-5/0 10-16mm2
0.6/1kVRSJ-5/1 25-50mm²
0.6/1kVRSJ-5/2 70-120mm2
0.6/1kVRSJ-5/3 150-240mm²
0.6/1kVRSJ-5/4 300-400mm2


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