High Thermal Limit Conductors
The constant increase of population density and electric energy consumption requires continuous transport capacity increase. Building new lines is often very difficult due to lack of available lands and environmental concerns, especially in the developed countries.
The high thermal limit conductors (HTL) for overhead lines are proposed specially to solve this problem, allowing an upgrade of the existing line increasing the ampacity from 1.5 to 2 times by replacing only the conductors, so saving time and money.
The use of innovative technologies allows to have conductors with mechanical and dimensional characteristics similar to standard ACSR or AAAC but without any decline if exposed to high working temperatures. Another special feature of high thermal limit conductors is the lower thermal expansion coeffcient that allows the reducing of the sag increase at high temperatures.
The main types of high termal limit conductors are: