ACCC Conductor News  CTC Global - June 2014

 The Economic Impact of Line Loss Reductions Using ACCC Conductor


Generally speaking most utilities, grid operators and regulators don't really worry too much about transmission and distribution line losses. After all, the costs are generally passed on to the consumer or "socialized." Surprisingly, utilities are often considered the largest single consumer of electricity as T&D losses range from about 6% (in Japan) to nearly 24% (in India). The ACCC conductor, generally used to increase the capacity of existing transmission and distribution lines to accommodate load growth or very high emergency loads, is also being used to reduce line losses by 25 to 40% or more depending upon load level.


This is due to the very low electrical resistance of the fully annealed type 1350-O aluminum used in most ACCC conductor designs, as well as the fact that most ACCC designs also use compact trapezoidal-shaped strands, which enables the incorporation of up to 28% more aluminum with no weight or diameter penalty, as the composite core is much lighter than steel. 


While every transmission engineer recognizes that line losses increase exponentially with current (think I^2R), the ACCC conductor, while rated for emergency operation up to 200 degrees C (~390 F), actually runs substantially cooler and more efficiently compared to other conductors of the same diameter and weight under any load condition.  The chart below was created from data compiled by Hydro One wherein a number of Drake size conductors were placed on a 65 meter (215 foot) test span and a current of 1,600 amps was applied.  You can see not only that the ACCC conductor exhibited the least amount of thermal sag (upper blue line), it also ran 60 to 80 degrees C (140 to 176 F) cooler than the other conductors under the same load.  This represents a huge reduction in line losses.


Considering that generation capacity is wasted supporting those losses, reducing losses can not only reduce fuel consumption and associated emissions, it can also 'free up' generation capacity that can now be deployed to 'paying customers.' Whether or not your organization considers line losses when they evaluate the never ending list of upcoming projects, at the end of the day, investment in efficiency does pay dividends.   To see this for yourself, request a free copy of CTC Global's CCP software program discussed in the sidebar below.  To better understand how utilities are beginning to identify and assess the true value of investment in transmission, please also check out the group known as WIRES.  There is a link to their website directly below.  Take a look at the Brattle report "The Benefits of Electric Transmission: Identifying and Analyzing the Value of Investments." It is available on the WIRES website.


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In This Issue
The Economic Impact of Line Loss Reduction Using ACCC
Recent Articles & News
Upcoming Events
Training Videos
ACCC Engineering Manual Now Available Electronically
Free CCP Engineering Software


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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 280 cases, the ACCC conductor has offered over 100 utilities the best economic solution for their particular project. 


Training Videos:


"A 'must read' document for design engineers, transmission line owners and decision makers"


Surinder Kumar Negi

Managing Director


Gujarat Energy Transmission Corporation Limited


You can now download an electronic copy from CTC Global's website!



Free CCP 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.

ACCC Conductor is an internationally patented and trademark registered product of CTC Global Corporation.  The ACCC conductor is manufactured in association with 18 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. 


CTC Global Corporation 2026 McGaw Avenue, Irvine, California USA 92614

Telephone: +1 949 428 8500

CTC Global Proudly Serving Over 100 Utilities Worldwide