NEMA’s new standard,
ANSI C84.1 Electric Power Systems and Equipment – Voltage Ratings (60 Hertz), establishes nominal voltage ratings and operating tolerances for 60-hertz electric power systems above 100 volts. It includes preferred voltage ratings up to and including 1200 kV maximum system voltage. A hard or electronic copy may be purchased for $68 by visiting
global.ihs.com or by contacting IHS at 800-854-7179 or 303-397-7956 (international).
