WG B2.55 Conductors for the Uprating of Existing Overhead Lines

  • Expand Cigré TB 244 (2003) to include composite core HTLS conductors and to consider recent ac resistance, sag-tension, creep, acceptance testing models developed since its publication in 2003. 
  • Investigate high temperature creep and complex thermal elongation in HTLS conductors. 
  • Include recent recommendations on selection of weather conditions for line rating and acceptance testing of HTLS conductors (TB 426). 

Through coordination with WGB2.48, revised tension limits (to avoid vibration fatigue), installation, and HTLS laboratory test results will be discovered by means of a joint questionaire.