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Electrical Tester Magazine - Issue 003 2021

Written by AVO NZ

ET Mag Issue 1 V01 web 1

  • Virtual testing of protection relays is real!
  • Testing high speed DC circuit breakers
  • Electrical hot spot inspection and preventative maintenance
  • Insulation drying and oil processing of in-service transformers
  • VLF testing on motors and generators
  • IEC 60255 1xx: Protection relay functional standards for all
  • Insulation assessment of motors through partial discharge testing and analysis
  • Surge and lightning arresters
  • Diagnostic testing of bushings
  • Understanding generator restricted earth fault (REF) protection and testing
  • Motor inrush current
  • The importance of IEC 61850 in relation to the smart grid

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