ANSI C29.2-1992 pdf download American National Standard for Insulators- Wet-Process Porcelain and Toughened Glass- Suspension Type
Scope
This standard covers suspension-type insulators, 4-1/4 inches (108 millimeters) in diameter and
larger, made of wet-process porcelain or of toughened glass and used in the transmission and
distribution of electrical energy.
2 Normative references
This standard is intended to be used in conjunction with the following American National Standards. When the referenced standards are superseded by a revision approved by the American National Standards Institute Inc, the revision shall apply.
ANSI C29.1-1988, Test Methods of Electrical Power Insulators
ANSI Z55.1-1967 (R1973), Gray Finishes for Industrial Apparatus and Equipment’
ANSI/IEEE 268-1982, Metric Practice
ASTM A153-82, Specification for Zinc Coating (Hot-Dip) on lron and Steel Hardware’
ASTM C151-84, Test Method for Autoclave Expansion of Portland Cement
3 Definitions
See section 2 of American National Standard Test Methods for Electrical Power Insulators,ANSI C29.1-1988, for definitions of terms.
4
General
4.1
Insulators shall conform in all respects to the requirements of this standard. The text and figures supplement each other and shall be considered part of this standard.
4.2
Manufacturer’s drawings, if furnished, shall show the outine of the insulators, together with all pertinent dimensions. Any variations in these dimensions due to manufacturing tolerances shall be indicated.
5
Material
5.1
Insulator shells
The insulator shells shall be made of wet-process porcelain or toughened glass. Shells shall be sound and free from defects that might adversely affect the insulators.
5.2
Shell surface
The surface of shells exposed after the assembly, which shall be glazed for porcelain insulators, shall be relatively smooth and free of imperfections.

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