IS 13305 : 1992 Permissible Limits of Visual Defects for Insulating Porcelains for Electrical Circuits

1 Scope

1.1 This standard applies to visual inspection of insulatingporcelains to be used on electrical circuits, such as porcelaininsulators, porcelain casings for lighting arresters and bushings,porcelain bases for switches and tap-boards and so on.

1.2 This standard substantially prescribes permissible limits ofvisual defects which are considered to have no influence upon theperformance of insulating porcelains.