IEEE Unapproved Draft Std PC37.06/D9 Nov 2008 IEEE Draft: Standard AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis - Preferred Ratings and Related Required Capabilities for Voltages Above 1000 Volts.
Institute of Electrical and Electronics Engineers (IEEE)
Scope
This standard describes the preferred ratings of indoor and outdoor high-voltage circuit breakers rated above 1000 V for use in commercial, industrial, and utility installations.