$39.00 $78.00
  • Revision:2011 Edition, December 7, 2011
  • Published Date:December 7, 2011
  • Status:Active, Most Current
  • Document Language:English
  • Published By:Institute of Electrical and Electronics Engineers (IEEE)
  • Page Count:34
  • ANSI Approved:No
  • DoD Adopted:No

  • This standard covers certain electrical, dimensional, andmechanical characteristics and takes into consideration certainsafety features of three-phase, 60-Hz, liquid-immersed,self-cooled, network transformers with a primary grounding switch.These transformers are rated 2500 kVA and below with high voltagesof 34 500GrdY/19 920 volts and below. These transformers aregenerally used for step-down purposes from underground primarycables and supply a secondary network system through networkprotectors. These transformers are typically installed below groundlevel.

    Purpose

    This standard is intended for use as a basis for establishingthe performance, electrical and mechanical interchangeability,safety of the equipment covered, and to assist in the properselection of such equipment.