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Heat shrink cable termination
Heat shrink cable termination
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Application areas:
It is widely used in the construction of 0.6-35kV 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, anti-aging properties and good stress homogenization properties after irradiation crosslinking modification.
- 3. The product must be installed while it is heated.
- 1. Completely restore the original cable structure at the cable joint. The conductor, inner semiconducting layer, main insulation and outer semiconducting layer at the joint should be restored to their original structure, so that the cable joint is equivalent to the complete cable structure.
- 2. The cable fusion bond without active interfaces eliminates interfaces and effectively avoids electrical hazards caused by air gaps between cable insulation and joint insulation.
- 3. It uses the same material as each layer of the cable and has a concentric cylindrical structure consistent with the cable body, resulting in a more uniform electric field distribution.
- Depending on the voltage level, the products are divided into voltage levels such as 8.7/15kV, 12/20kV, 18/20(30)kV, and 26/35kV.
Features:
Product Parameters
The electrical performance of the product meets the requirements of IEC60502 and GB/T12706.4 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. | ||||
| 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. | ||||
| Outdoor terminal salt spray test | 11 kV, 1000h | 15kV, 1000h | 22.5kV, 1000h | 32.5kV, 1000h |
| No breakdown, no flashover, no electrical erosion or mechanical damage. | ||||
| Indoor terminal humidity test | 11 kV, 300h | 15kV, 300h | 22.5kV, 300h | 32.5kV, 300h |
| No breakdown, no flashover, no electrical erosion or mechanical damage. | ||||
| 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:
| Experimental 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 |
Product Selection
Selection table for 0.6～35kV heat shrink terminal products:
| voltage level | Number of wire cores | Cable cross-section/mm2 | Indoor terminal product code | Outdoor terminal product code |
| 26/35kV | 3,1 | 25-50 70-120 150-240 300-400 500-630 | 26/35kVRSNY-3/1(1/1) 26/35kVRSNY-3/2(1/2) 26/35kVRSNY-3/3(1/3) 26/35kVRSNY-3/4(1/4) 26/35kVRSNY-3/5(1/5) | 26/35kVRSWY-3/1(1/1) 26/35kVRSWY-3/2(1/2) 26/35kVRSWY-3/3(1/3) 26/35kVRSWY-3/4(1/4) 26/35kVRSWY-3/5(1/5) |
| 18/20(30)kV | 3,1 | 25-50 70-120 150-240 300-400 500-630 | 18/20 (30) VRSNY-3/1 (1/1) 18/20 (30) VRSNY-3/2 (1/2) 18/20 (30) VRSNY-3/3 (1/3) 18/20 (30) VRSNY-3/4 (1/4) 18/20 (30) VRSNY-3/5 (1/5) | 18/20 (30) VRSWY-3/1 (1/1) 18/20 (30) VRSWY-3/2 (1/2) 18/20 (30) VRSWY-3/3 (1/3) 18/20 (30) VRSWY-3/4 (1/4) 18/20 (30) VRSWY-3/5 (1/5) |
| 12/20kV | 3,1 | 25-50 70-120 150-240 300-400 500-630 | 12/20kVRSNY-3/1(1/1) 12/20kVRSNY-3/2(1/2) 12/20kVRSNY-3/3(1/3) 12/20kVRSNY-3/4(1/4) 12/20kVRSNY-3/5(1/5) | 12/20kVRSWY-3/1(1/1) 12/20kVRSWY-3/2(1/2) 12/20kVRSWY-3/3(1/3) 12/20kVRSWY-3/4(1/4) 12/20kVRSWY-3/5(1/5) |
0.6/1kV Heat Shrink Terminal Selection Table:
| Product Name | Specifications and Models | Applicable cable cross-section |
|---|---|---|
| Heat shrink single-core terminal | 0.6/1kVRST-1/（-1） | 4-6mm2 |
| 0.6/1kVRST-1/0 | 10-16mm2 | |
| 0.6/1kVRST-1/1 | 25-50mm² | |
| 0.6/1kVRST-1/2 | 70-120mm2 | |
| 0.6/1kVRST-1/3 | 150-240mm² | |
| 0.6/1kVRST-1/4 | 300-400mm2 | |
| Heat-shrink dual-core terminal | 0.6/1kVRST-2/（-1） | 4-6mm2 |
| 0.6/1kVRST-2/0 | 10-16mm2 | |
| 0.6/1kVRST-2/1 | 25-50mm² | |
| 0.6/1kVRST-2/2 | 70-120mm2 | |
| 0.6/1kVRST-2/3 | 150-240mm² | |
| 0.6/1kVRST-2/4 | 300-400mm2 | |
| Heat shrink three-core terminal | 0.6/1kVRST-3/（-1） | 4-6mm2 |
| 0.6/1kVRST-3/0 | 10-16mm2 | |
| 0.6/1kVRST-3/1 | 25-50mm² | |
| 0.6/1kVRST-3/2 | 70-120mm2 | |
| 0.6/1kVRST-3/3 | 150-240mm² | |
| 0.6/1kVRST-3/4 | 300-400mm2 | |
| Heat shrink four-core terminal | 0.6/1kVRST-4/（-1） | 4-6mm2 |
| 0.6/1kVRST-4/0 | 10-16mm2 | |
| 0.6/1kVRST-4/1 | 25-50mm² | |
| 0.6/1kVRST-4/2 | 70-120mm2 | |
| 0.6/1kVRST-4/3 | 150-240mm² | |
| 0.6/1kVRST-4/4 | 300-400mm2 | |
| Heat shrink five-core terminal | 0.6/1kVRST-5/（-1） | 4-6mm2 |
| 0.6/1kVRST-5/0 | 10-16mm2 | |
| 0.6/1kVRST-5/1 | 25-50mm² | |
| 0.6/1kVRST-5/2 | 70-120mm2 | |
| 0.6/1kVRST-5/3 | 150-240mm² | |
| 0.6/1kVRST-5/4 | 300-400mm2 |
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