ROSSLYN, Va.—The National Electrical Manufacturers Association (NEMA) published ANSI/NEMA C29.7-2015 American National Standard for Wet-Process Porcelain Insulators—High-Voltage Line-Post Type. This standard covers high-voltage line-type insulators made of wet-process porcelain and used in the transmission and distribution of electrical energy.
ANSI/NEMA C29.7 was developed by the ASA Accredited Standards Committee C29 on insulators for electric power lines and the NEMA 8HV committee on high-voltage insulators. This standard is used by electric power utility companies, public utilities, and manufacturers of high-voltage electrical products. In this revision, changes have been made to the sampling sizes, glaze and color requirements, units of measurement, and marking and packing requirements.
ANSI C29.7-2015 may be downloaded at no charge or purchased in hard copy for $54 on the NEMA website.
The National Electrical Manufacturers Association (NEMA) represents nearly 400 electrical, medical imaging, and radiation therapy manufacturers. Our combined industries account for more than 400,000 American jobs and more than 7,000 facilities across the U.S. Domestic production exceeds $117 billion per year. Our industry is at the forefront on electrical safety, reliability, resilience, efficiency, and energy security.