IEEE Std C37.30.4:2018 pdf download IEEE Std C37.30.4:2018 pdf download.IEEE Standard for Test Code for Switching and Fault Making Tests... 12/07/2021IEEE Standards223IEEE Standard for Test Code for Switching and Fault Making Tests for High-Voltage Interrupter Switches Interrupters or Interrupting Aids Used on or Attached to Switches Rated for Alternating Currents Above 1000 VComments Read more