Porcelain insulators including: HV Line Pin Insulator, Disc Insulator, Post Insulator, LV Line Pin Insulator, Shackle Insulator, Strain Insulator, Spool Insulator, Porcelain insulator for fuse cutout, etc.
Technical requirement of Line Post Insulator (57-3):
1.Creepage distance: Min.737mm;
2.Cantilever strength: 12.5kN;
3.Cantilever proof load: 5kN;
4.Critical impulse flashover, positive: 210kV;
5.Colour of insulator glazed: Grey or Brown.