IEEE standards download IEEE Std C37.04-2018 pdf download – IEEE Standard for Ratings and Requirements for AC High-Voltage Circuit Breakers with Rated Maximum Voltage Above 1000 V IEEE Std C37.04-2018 pdf download - IEEE Standard for Ratings and Requirements for AC High-Voltage Circuit Breakers with Rated Maximum Voltage Above 1000 V. 3.1 Definitions For the purposes of this document, the following terms and definitions... 02-26 Download Now