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 |