China 40.5kV Cold Shrink Outdoor Termination for 240-400 sq.mm 3-core Cable, Find details about China Cold Shrink, Cold Shrink Terminaiton from 40.5kV Cold Shrink Outdoor Termination for 240-400 sq.mm 3-core Cable
Voltage | Cable cores | Cable conductor size (mm2) | Suitable insulation dia. range (mm) |
12/20(24)kV and below | 1-core or 3-core | 25-800 | 15-49 |
18/30(36)kV | 1-core or 3-core | 35-630 | 23-49 |
26/35(40.5)kV | 1-core or 3-core | 50-800 | 31-57 |
Test item | 12/20(24)kV | 18/30(36)kV | 26/35(40.5)kV |
A.C. voltage withstand test | No flashover, no breakdown at 54kV for 5min. | No flashover, no breakdown at 81kV for 5min. | No flashover, no breakdown at 117kV for 5min. |
Partial discharge test | 20kV, <10pC | 30kV, <10pC | 45kV, <10pC |
Heating cycles voltage test | 60 cycles at the temperature of 95-100°C, 30kV | 60 cycles at the temperature of 95-100°C, 45kV | 60 cycles at the temperature of 95-100°C, 65kV |
Impulse voltage withstand test at 95-100°C | No flashover, no breakdown at 10 positive and 10 negative impulses at 125kV | No flashover, no breakdown at 10 positive and 10 negative impulses at 170kV | No flashover, no breakdown at 10 positive and 10 negative impulses at 200kV |
15min, A.C. voltage withstand test | 30kV, 15min. no flashover, no breakdown | 45kV, 15min. no flashover, no breakdown | 65kV, 15min.no flashover, no breakdown |