NEMA C84.1-1989
Electric Power Systems and Equipment - Voltage Ratings (60 Hertz)

Standard No.

NEMA C84.1-1989

Release Date

1989

Published By

NEMA - National Electrical Manufacturers Association

Status

Be replaced 2006-12

Replace By

NEMA C84.1-1995

Latest

NEMA C84.1-2020

Scope

This standard establishes nominal voltage ratings and operating tolerances for 60-hertz electric power systems above 100 volts and through 230 kilovolts. It also makes recommendations to other standardizing groups with respect to voltage ratings for equipment used on power systems and for utilization devices connected to such systems.NOTE: For completeness@ information on extra-high voltage systems (345 kilovolts and higher) from American National Standard for Power Systems??? Alternating-Current Electrical Systems and Equipment Operating at Voltages above 230 kV Nominal??? Preferred Voltage Ratings@ ANSI C92.2-1987@ is also included as a footnote to Table 1.

NEMA C84.1-1989 history

• 1970 NEMA C84.1-2020 Electric Power Systems and Equipment - Voltage Ratings (60 Hertz) R(2001)
• 2016 NEMA C84.1-2016 Electric Power Systems and Equipment - Voltage Ratings (60 Hertz)
• 2011 NEMA C84.1-2011 Electric Power Systems and Equipment - Voltage Ratings (60 Hertz)
• 2006 NEMA C84.1-2006 Electric Power Systems and Equipment - Voltage Ratings (60 Hertz)
• 1995 NEMA C84.1-1995 Electric Power Systems and Equipment - Voltage Ratings (60 Hertz)
• 1989 NEMA C84.1-1989 Electric Power Systems and Equipment - Voltage Ratings (60 Hertz)
• 1982 NEMA C84.1-1982 ELECTRIC POWER SYSTEMS AND EQUIPMENT - VOLTAGE RATINGS (60 HZ)