Ceramic insulators are made by wet process porcelain or dry process porcelain with excellent mechanical strength and made from C130 porcelain materials.
According to insulator application, ceramic insulators can be divided into
◆ Transformer bushing types – transformer bushing for outdoor and indoor are used as structure carrying on conductor through a partition from transformer tank
◆ Low voltage pin insulator – these insulators are fitted on low voltage overhead lines (1.1 kV) for fixing of conductor to poles and in the distribution system with insulator spindle
◆ Cap and pin insulator – generally used on overhead transmission and distribution network
◆ Pin insulators - are used on medium voltage overhead distribution lines (11, 22 and 33 KV) for fixing conductors to tower bodies to distribute power from substation to town and inside the town networks
◆ Post insulator – P13 and P70 post insulators are the hot insulator used in substations and stations
◆ Line post insulator – are applied on medium voltage overhead distribution lines (36kV, 69kV and 72.5kV) for supporting and insulating
◆ Stay insulators – give protection in the event of accidentally broken live wire that can accidentally energizing a stay wire and remaining in contact with line which doesn’t trip.
◆ Long rod insulators - Long rod insulators are applied on medium and high voltage overhead distribution and transmission lines for suspension or tension of conductor to tower bodies.
Ceramic insulators also called porcelain insulator includes hot insulator which is suspension insulator. Sometimes cap and pin insulator including porcelain suspension insulator and especial post insulator.
Porcelain line post insulator
Porcelain pin insulator
Porcelain station post insulator
Porcelain bushing insulator