http://www.eastceramic.com/porcelain-bushing/
bulk Porcelain Bushing Details Name: High voltage porcelain bushing Type: 30NF250 High voltage porcelain bushing Related type: 10NF/250A,20NF/250,30NF/250 Voltage Range: 12kV~36kV Standard: The DIN standard Graze colors of insulators: Brown Material: Alumina and silica porcelain 鈼廘ow voltage bushings: from 1 kV to 3 kV, from 250A to 4.500A 鈼廐igh voltage bushings: from 10