12 kV ~ 245kV pure porcelain wall bushing,
1.Service conditions
Ambient air temperature: -50 centigrade ~ +50 centigrade
The altitude ≤ 1000m, if higher, amend according to IEC 60137
The creepage ratio20mm/kV, 25mm/kV or 31mm/kV
2. Technical indexes
Rated voltage ( Ur ): 33kV, 52kV, 72.5kV, 123kV, 145kV, 170kV, 245kV
Rated current ( IR ): ≤ 4000A
Partial discharge: ≤ 5PC
Dielectric dissipation factor: ≤ 0.004
Ith: 25IR
All parameters are in accordance with IEC 60137
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