IS 2486 : Part 2 : 1989 Insulator fittings for overhead power lines with nominal voltage greater than 1 000 V: Part 2 Dimensional requirements

1 Scope

1.1 This standard (Part 2) gives the dimensions of the insulatorfittings and their associated gauges for use on overhead powerlines with a nominal voltage greater than 1000 V.

2 Reference Standards

IS 731 :1971Porcelain insulators for overhead power lineswith a nominal voltage greater than 1000 V

IS 1363 : Part 3 :1984 Hexagon head bolts, screws and nutsof productgrade C:Part 3 Hexagon nuts (size range M5 to M36)

IS 1885 : Part 54 :1980 Electrotechnical vocabulary:Part 54 Insulator

IS 3188 :1980Characteristics of string insulator units

IS 4218 : Part 2 :1976 ISO metric screw threads:Part 2 Diameter pitch combinations

IS 7935 : 1975Insulator fittings for overhead power lineswith a nominal voltage up to and including1000 V

IS 10136 :1982Code of practice for selection of discinsulator fittings for highest system voltages4 of 72.5 kV and above