ACCC Conductor News  CTC Global - February 2015


  PT PLN Completes 35th ACCC Installation in Indonesia

With the help of contractor PT KELINCI MAS UNGGUL,  PT PLN completed the installation of 150.6 mm^2 (297 kcmil) ACCC Helsinki size conductor used to span the Banda Sea from Baruta (MUNA Island) to Bau-Bau (BUTON Island) in Southeast Sulawesi, Indonesia. This project represents PLN's 35th successful ACCC conductor installation in Indonesia, with over 7,000 km of ACCC installed to date.  The ACCC conductor, stranded by Kabelindo, was selected to replace 120 mm^2 ACSR to improve the capacity of a 20 kV distribution line. PLN serves over 50 million residential, commercial and industrial customers throughout Indonesia with the highest level of integrity, efficiency and innovation.

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In This Issue
What is a Thermal Knee-Point?
All conductors that use core materials that are different from the outer conductive strands have a thermal knee-point. Initially, the tensile load of an installed conductor is shared by the core and conductive strands. As the conductor's temperature rises with increased current, the coefficient of thermal expansion ("CTE") of the outer strands causes them to elongate faster than the lower CTE core. As temperatures rise the outer strands relax and transfer their tensile load to the 'tighter' core. The apex of this transfer is referred to as the thermal knee-point. Because the CTE of the core is lower than the CTE of the outer strands, conductor sag above the thermal knee-point decreases. The ACCC conductor's lower CTE and lower thermal knee-point offers reduced thermal sag under any operating condition. For more information please download a free electronic copy of CTC Global's Engineering Manual.
Free Design Software
CTC Global created CCP to help system planners and engineers compare the ampacity, line losses, thermal and ice load sag, and economic aspects of nearly any conductor type and size, so the numerous advantages of the ACCC� conductor can be fully realized. The user simply selects the conductor types and sizes from drop down menus and enters the appropriate values & assumptions highlighted in the yellow boxes. The program is fully functional and uses standard industry formulas (such as IEEE 738-2006). Outputs are readily comparable to Sag10�, PLS CADD™ and other similar programs.


Why Over 100 International Utilities Have Selected ACCC

  • High Capacity
  • Low Sag
  • High Strength
  • Fatigue Resistant
  • Corrosion Resistant
  • Excellent Self Damping
  • Easy to Install
  • Great for Long Spans
  • Very Tough
  • Extensively Proven
  • Excellent for N-1 Conditions
  • Lower Line Losses


The ACCC Conductor's added aluminum content (without a weight or diameter penalty) allows it to run cooler under any load condition which translates into reduced line losses. Reduced line losses can save fuel, emissions and generation capacity.


The Bottom Line:

In more than 300 cases, the ACCC conductor has provided more than 100 utilities the best economic solution for their specific project needs. 


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ACCC Conductor is an internationally patented and trademark registered product of CTC Global Corporation.  The ACCC conductor is manufactured in association with 19 qualified and licensed international stranding partners. If you are interested in the ACCC conductor, please contact CTC Global to make sure your supplier is authorized to produce ACCC.  Thank You. 


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