The National Electrical Manufacturers Association (NEMA) published NEMA HV 2-2014 Suspension and Post Type Insulators for Electric Power Overhead Lines General Use Information.
HV 2 provides guidelines for the proper use of insulators and
suggestions for precautions to be taken against improper use. This
latest edition of HV 2 was rewritten to include all suspension and post
type high-voltage insulators as covered in the ANSI C29 series of
American National Standards.
HV 2-2014 may be downloaded at no cost or purchased in hardcopy for $61 on the NEMA website.
NEMA is the association of electrical equipment and medical imaging manufacturers, founded in 1926 and headquartered in Rosslyn, Virginia. Its 400-plus member companies manufacture a diverse set of products including power transmission and distribution equipment, lighting systems, factory automation and control systems, and medical diagnostic imaging systems. Total U.S. shipments for electroindustry products exceed $100 billion annually.
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