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ANSI/NEMA C29.12-2020
Composite Insulators - Transmission Suspension Type
Covers composite-suspension insulators made of a fiberglass-reinforced resin rod core, polymer material weathersheds and metal end fittings intended for use on overhead transmission lines for electric power systems, 70 kV and above. Mechanical and electrical performance levels specified herein are required for new insulators.
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NEMA: National Electrical Manufacturers Association [nema]