Test ItemsStandard Requirements and Test Results
8.7/15 kV26/35 kV
5 min power-frequency withstand voltage test39 kV / 117 kV
Partial discharge test15 kV / 45 kV
Load cycle test in air22 kV / 65 kV
Impulse voltage test95 kV / 200 kV
Outdoor termination salt mist test11 kV, 1000 h / 32.5 kV, 1000 h
Indoor termination humidity test11 kV, 300 h / 32.5 kV, 300 h
Maximum allowable temperature during normal operation90°C / 90°C
Maximum allowable temperature during short circuit250°C / 250°C
L1L2 / L3 / L4 / Number of sheds
26/35 kV outdoor termination≥400 / 450±10 / 1000-4500 / 780-880 / 9
26/35 kV indoor termination≥300 / 330±10 / 800-4500 / 700-800 / 7
8.7/15 kV outdoor termination≥200 / 294±10 / 600-3000 / 500-600 / 5
8.7/15 kV indoor termination≥125 / 210±10 / 500-3000 / 400-500 / 4