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Lug 2. Cable core 3. Melt adhesive 4. Sealing tube 5. Cable insulation layer 6. Heat shrinkable tube 7. Single hole rain skirt 8. Stress tube 9. Cable semi-conductive layer 10. Copper copper screen layer 11. Three hole rain skirt 12. Trigeminal sheath 13. Earthing wire 14. Cable 15. Triangulation cone
Voltage Section number | 1 | 2 | 3 | 4 |
8.7/15 | 25-50 | 70-120 | 150-240 | 300-400 |
12/20,26/35 | 50-95 | 120-185 | 240-400 | 500-630 |
Lug 2. Cable core 3. Melt adhesive 4. Sealing tube 5. Cable insulation layer 6. Heat shrinkable tube 7. Single hole rain skirt 8. Stress tube 9. Cable semi-conductive layer 10. Copper copper screen layer 11. Three hole rain skirt 12. Trigeminal sheath 13. Earthing wire 14. Cable 15. Triangulation cone
Voltage Section number | 1 | 2 | 3 | 4 |
8.7/15 | 25-50 | 70-120 | 150-240 | 300-400 |
12/20,26/35 | 50-95 | 120-185 | 240-400 | 500-630 |
Voltage Section number | 1 | 2 | 3 | 4 |
8.7/15 | 25-50 | 70-120 | 150-240 | 300-400 |
12/20,26/35 | 50-95 | 120-185 | 240-400 | 500-630 |
Item | Requirement | ||
8.7/15(17.5) | 12/20(24) | 26/35(40.5) | |
5min Power frequency voltage test | 39kV, no flashover, no breakdown | 54kV, no flashover, no breakdown | 117kV, no flashover, no breakdown |
Partial discharge test | 15kV discharge capacity≤10pC | 20kV discharge capacity≤10pC | 45kV discharge capacity≤10pC |
Lightning impulse test | 95kV | 125kV | 200kV |
10 times of positive and negative, no flashover, no breakdown | |||
Constant voltage load cycle test in air | 22kV | 30kV | 65kV |
The conductor is heated to 95-100ºC, each cycle is 8h, heating 5h and cooling 3H for 60 cycles. | |||
Partial discharge test at high temperature | 15kV discharge capacity≤10pC | 20kV discharge capacity≤10pC | 45kV discharge capacity≤10pC |
15min AC voltage withstand test | 22kV, no flashover, no breakdown | 30kV, no flashover, no breakdown | 65kV, no flashover, no breakdown |
Negative DC voltage test | 52kV, no flashover, no breakdown | 64kV, no flashover, no breakdown | 156kV, no flashover, no breakdown |
4H power frequency voltage test | 35kV, no flashover, no breakdown | 48kV, no flashover, no breakdown | 104kV, no flashover, no breakdown |
Outdoor termination salt spray test 1000h | 11kV, no flashover, no breakdown | 15kV, no flashover, no breakdown | 32.5kV, no flashover, no breakdown |
Indoor termination humidity test 300h | 11kV, no flashover, no breakdown | 15kV, no flashover, no breakdown | 32.5kV, no flashover, no breakdown |
Lug 2. Cable core 3. Melt adhesive 4. Sealing tube 5. Cable insulation layer 6. Heat shrinkable tube 7. Single hole rain skirt 8. Stress tube 9. Cable semi-conductive layer 10. Copper copper screen layer 11. Three hole rain skirt 12. Trigeminal sheath 13. Earthing wire 14. Cable 15. Triangulation cone
Voltage Section number | 1 | 2 | 3 | 4 |
8.7/15 | 25-50 | 70-120 | 150-240 | 300-400 |
12/20,26/35 | 50-95 | 120-185 | 240-400 | 500-630 |
Lug 2. Cable core 3. Melt adhesive 4. Sealing tube 5. Cable insulation layer 6. Heat shrinkable tube 7. Single hole rain skirt 8. Stress tube 9. Cable semi-conductive layer 10. Copper copper screen layer 11. Three hole rain skirt 12. Trigeminal sheath 13. Earthing wire 14. Cable 15. Triangulation cone
Voltage Section number | 1 | 2 | 3 | 4 |
8.7/15 | 25-50 | 70-120 | 150-240 | 300-400 |
12/20,26/35 | 50-95 | 120-185 | 240-400 | 500-630 |
Voltage Section number | 1 | 2 | 3 | 4 |
8.7/15 | 25-50 | 70-120 | 150-240 | 300-400 |
12/20,26/35 | 50-95 | 120-185 | 240-400 | 500-630 |
Item | Requirement | ||
8.7/15(17.5) | 12/20(24) | 26/35(40.5) | |
5min Power frequency voltage test | 39kV, no flashover, no breakdown | 54kV, no flashover, no breakdown | 117kV, no flashover, no breakdown |
Partial discharge test | 15kV discharge capacity≤10pC | 20kV discharge capacity≤10pC | 45kV discharge capacity≤10pC |
Lightning impulse test | 95kV | 125kV | 200kV |
10 times of positive and negative, no flashover, no breakdown | |||
Constant voltage load cycle test in air | 22kV | 30kV | 65kV |
The conductor is heated to 95-100ºC, each cycle is 8h, heating 5h and cooling 3H for 60 cycles. | |||
Partial discharge test at high temperature | 15kV discharge capacity≤10pC | 20kV discharge capacity≤10pC | 45kV discharge capacity≤10pC |
15min AC voltage withstand test | 22kV, no flashover, no breakdown | 30kV, no flashover, no breakdown | 65kV, no flashover, no breakdown |
Negative DC voltage test | 52kV, no flashover, no breakdown | 64kV, no flashover, no breakdown | 156kV, no flashover, no breakdown |
4H power frequency voltage test | 35kV, no flashover, no breakdown | 48kV, no flashover, no breakdown | 104kV, no flashover, no breakdown |
Outdoor termination salt spray test 1000h | 11kV, no flashover, no breakdown | 15kV, no flashover, no breakdown | 32.5kV, no flashover, no breakdown |
Indoor termination humidity test 300h | 11kV, no flashover, no breakdown | 15kV, no flashover, no breakdown | 32.5kV, no flashover, no breakdown |