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HIGH-TEMPERATURE-RESISTANT OVERHEAD LINES able to withstand temperatures up to 210°C (HTLS - High Temperature Low Sag)


THERMAL RESISTANCE FOR THE MOST STRINGENT REQUIREMENTS

ZTAl (AT3), also an aluminium zirconium alloy, enables temperatures of up to 210 °C in continuous operation. Within the conductor, continuous current increases of up to 100% are possible, with the HACIN preventing a significant increase in sag and meaning that the necessary ground clearance can be maintained.


HACIN wires, i.e. aluminium-clad INVAR wires, contribute to reducing sag, primarily at higher temperatures. INVAR, a steel-nickel alloy (with approx. 36% nickel) has a considerably lower thermal coefficient of expansion than conventional carbon steel.

 

 

LIST OF MATERIALS

  • AT3 (ZTAl) Conductor
  • AT3 Conductor HACIN Reinforced

"HOT AND BLACK" - BLACK HIGH-TEMPERATURE CONDUCTORS

Conductors with a black surface have been developed in order to optimise the operational behaviour and the continuous current carrying capacity. The black conductor surface causes an improvement in the heat emission, meaning that the conductor stays significantly cooler for a given transfer performance or, conversely, more energy can be transferred at a given conductor temperature.

 

More information on  COATED OVERHEAD CONDUCTORS  

 

 

PRODUCT CHARACTERISTICS

Due to the fact that the continuous current carrying capacity is up to approx. 100% higher compared to ACSR with the same cross section, a capacity increase of up to approx. 100% (doubling) is possible. One of the most cost-effective solutions for upgrading existing systems. These conductors can also be used to generate transmission reserves. Due to the higher short-circuit current, the conductors also ensure greater operational safety.



VERSIONS

In order to reduce visibility in particularly sensitive environmental areas or to optimise the continuous current load, the thermal resistant conductor can be coated in a specific colour. Using a special surface treatment, a "noise-reduced conductor" version is also possible.

More information on   SURFACE TREATMENTS FOR OVERHEAD CONDUCTORS