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Prefabricated cable termination
Prefabricated cable termination
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Application areas:
Widely used in the construction of 1-35kV power cable transmission and distribution network infrastructure
Product Description
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Product Introduction:
Prefabricated cable terminals are made by injection vulcanization of high-quality liquid silicone rubber in a factory. During installation, after properly treating the cable body as required, the terminal body is pushed firmly into the installation position. Depending on the usage environment, they are divided into indoor and outdoor types.
- 1. The main body is made of high-quality imported liquid silicone as the base material and is molded by high temperature and high pressure injection process. The product has excellent properties such as high elasticity, high tear resistance, aging resistance, corona resistance and creep resistance; the structural design is optimized.
- 2. After properly handling the cable body as required during installation, push the terminal body firmly into the installation position.
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 | 26/35 kV | |
| 5-minute power frequency withstand voltage test | 39kV | 117kV |
| No penetration, no flashover | ||
| Partial discharge test | 15 kV | 45 kV |
| Undetectable discharge | ||
| Air load cycling test | 22 kV | 65 kV |
| The conductor was heated to 95℃～100℃ and subjected to 60 cycles without breakdown or flashover. | ||
| Impulse voltage test | 95 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 | 32.5kV, 1000h |
| No breakdown, no flashover, no electrical erosion or mechanical damage. | ||
| Indoor terminal humidity test | 11 kV, 300h | 32.5kV, 300h |
| No breakdown, no flashover, no electrical erosion or mechanical damage. | ||
| Maximum allowable temperature during normal operation | 90℃ | 90℃ |
| Maximum permissible temperature during short circuit | 250℃ | 250℃ |
| 8.7/15kV and 26/35kV prefabricated cable terminal structural dimensions | |||||
| L1 | L2 | L3 | L4 | Number of umbrella skirts | |
| 26/35 kV Outdoor Terminal | ≥400 | 450±10 | 1000-4500 | 780-880 | 9 |
| 26/35 kV Indoor Terminal | ≥300 | 330±10 | 800-4500 | 700-800 | 7 |
| 8.7/15 kV Outdoor Terminal | ≥200 | 294±10 | 600-3000 | 500-600 | 5 |
| 8.7/15 kV Indoor Terminal | ≥125 | 210±10 | 500-3000 | 400-500 | 4 |
| L3 and L4 can be adjusted appropriately according to the on-site construction environment, and the length of the cold shrink insulation tube can be adjusted accordingly. | |||||
Product Selection
| voltage level | Number of wire cores | Cable cross-section/mm2 |
|---|---|---|
| 26/35kV | 1, 3 Indoor terminal |
50/95/120/150/185/240/300/400/500/630 |
| 1, 3 Outdoor Terminal |
50/95/120/150/185/240/300/400/500/630 | |
| 8.7/15kV | 1, 3 Indoor terminal |
25/35/50/95/120/150/185/240/300/400/500/630 |
| 1, 3 Outdoor Terminal |
25/35/50/95/120/150/185/240/300/400/500/630 |
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