China 11kv 12kv 15kv 24kv 25kv 33kv 35kv 36kv Medium Voltage Heat Shrinkable Outdoor Termination Kits for Polymeric Insulated Cable, Find details about China Paper Insulated, Indoor from 11kv 12kv 15kv 24kv 25kv 33kv 35kv 36kv Medium Voltage Heat Shrinkable Outdoor Termination Kits for Polymeric Insulated Cable
Test item | Voltage Um (kV) | Result | ||||
7.2 | 12 | 17.5 | 24 | 36 | ||
D.C. voltage dry withstand,15min | 23 | 38 | 52 | 78 | 125 | No failure or flashover |
A.C. voltage dry withstand,5min | 17 | 28.5 | 39 | 57 | 93.6 | No breakdown or flashover |
A.C. voltage wet withstand,1min | 15 | 25.5 | 35 | 51 | 83 | No breakdown or flashover |
Partial discharge at ambient temperature | 6.5 | 11 | 15 | 22 | 36 | <5pC |
Impulse voltage at elevated temperature (10 positive and 10 negative 1.2/50μs) | 60 | 95 | 95 | 125 | 200 | No breakdown or flashover |
Heat cycling in air, 3 cycles 5hrs heating, 3hrs cooling, at 95°C | 9.5 | 16 | 23 | 32 | 52 | Pass |
Partial discharge at elevated and ambient temperature | 6.5 | 11 | 15 | 22 | 36 | <5pC |
Heat cycling in air, 113 cycles 5hrs heating, 3hrs cooling, at 95°C | 9.5 | 16 | 23 | 32 | 52 | Pass |
Partial discharge at elevated and ambient temperature | 6.5 | 11 | 15 | 22 | 36 | <5pC |
Impulse voltage at elevated temperature (10 positive and 10 negative 1.2/50μs) | 60 | 95 | 95 | 125 | 200 | No breakdown or flashover |
A.C. voltage dry withstand 15min | 9.5 | 16 | 23 | 32 | 52 | No breakdown or flashover |
Salt fog, 1000h | 5.0 | 8 | 11 | 16 | 26 | No failure or flashover |