125kV Porcelain station post insulator is one of porcelain solid core insulator consisting of one post insulator unit or assembly of such units and is intended to give rigid support to a live part which is insulated from earth or from another live part. At both ends of porcelain station post insulator is usually same. It is an insulator of columnar shape, 

125kV Porcelain station post insulator is often used in power station and substation for supporting and insulation wire. Sometimes it called porcelain solid-core insulator. 125kV Porcelain station post insulators are available in various electrical and mechanical rating. There are two types for this series, normal and anti-pollution type.