IS 3347 : Part 8 : Sec 2 : 1992 Dimensions for porcelain transformer bushings for use in lightly polluted atmospheres: Part 8 52 kV bushings: Section 2 Metal parts

1 Scope

This standard (Part 8/Sec 2) lays down the dimensions,tolerances and materials of metal parts and accessories of thebushings of 52 kV 1 000 A used with power transformers and reactorsfor use in lightly polluted atmospheres.

2 References

List of Referred Indian Standards

IS 191 : Parts 1 to 10 : 1980 Specification forcopper (covers Parts 1to 10)

IS 292 :1983Leaded brass ingots and castings

IS 407 :1981Brass tubes for general purposes

IS 613 :1984Copper rods and bars for electricalpurposes

IS 1364 : Part 3 :1983Specification for precision andsemi-precision hexagon bolts, screws, nutsand jock nuts (diameter range 6 to 39 mm)

IS 2062 :1980Weldable structural steel

IS 2102 : Part 1 : 1980 General tolerancefor dimensions and formand position: Part 1 General tolerance forlinear and angular dimensions

IS 2712 :1979Compressed asbestos fibre jointing

IS 3400 : Part 2 :1980Methods of test for vulcanized rubbers:Part 2 Hardness

IS 6912 :1985Copper and copper alloy forging stock andforgings (superseding IS 3488 : 1980)

IS4218ISO-metric screw threads

IS 4253 : Part 2 :1980 Corkcomposition sheets: Part 2 Cork andrubber

IS 4257 : Part 1 :1981 Dimensions forclamping arrangements forporcelain transformer bushings: Part 1 For12 to 52 kV bushings

IS 4759 :1984Hot-dip zinc coatings on structural steeland other allied products

IS 9550 :1980Specification for bright bars