IS 12676 : 1989 Oil impregnated paper insulated condenser bushings - Dimensions and requirements

1 Scope

1.1 This standard applies to only oil impregnated paperinsulated condenser type transformer bushings fitted with test taparrangement. The bushings are suitable for use in light, medium orheavily polluted atmospheres.

1.2 This standard specifies the standard dimensions of joints inthe lead arrangements of draw lead (DL) and draw rod (DR) typebushings of rated voltages 145, 245 and 420 kV, This standard alsospecifies the dimensions of oil end terminal of solid stem (SS)type bushings of rated voltage 52, 72.5 and 245 kV.

1.3 The performance requirements and tests on bushings if notspecified in this standard, shall be in accordance with thosespecified is IS 2099 : 1986.

2 References

IS 1359 :1977Electroplated coatings of tin

IS 2099 :1986Bushings for alternating voltages above 1 000 volts

IS 2102 : Part 1 :1980 General tolerances fordimensions and form andposition: General tolerances for linear andangular dimensions

IS 2269 :1981Hexagonal socket head cap screws

IS 3347 (issued in parts) Dimensions for porcelaintransformer bushingsfor use in lightly polluted atmospheres

IS 5371 : 1982Multi-tooth lock washers

IS 8607 (issued in parts) Dimensions for porcelaintransformer bushingsfor use in heavily polluted atmospheres