NEMA C37.33-1970
Rated control voltages and their ranges for high-voltage air switches

Standard No.

NEMA C37.33-1970

Release Date

1970

Published By

NEMA - National Electrical Manufacturers Association

Status

Be replaced

Replace By

NEMA C37.33-1987

Latest

NEMA C37.33-1987

Scope

This standard specifies the rated control voltages and their ranges for power-operated mechanisms@ when measured at the terminals of the operating motors@ solenoids@ or tripping mechanisms during operation.

NEMA C37.33-1970 history

• 1987 NEMA C37.33-1987 Switchgear - High-Voltage Air Switches - Rated Control Voltages and Their Ranges (Addition to Table 1) Supplement C37.33A - 1990 [Replaced: ANSI C37.33, ANSI C37.33, ANSI C37.33]
• 1970 NEMA C37.33-1970 Rated control voltages and their ranges for high-voltage air switches