TREFINASA is a company stablished in 1999 with the first objective of manufacturing aluminium clad steel (ACS) wire. These wires are used in electrical industry, more concretely in manufacturing optical ground wire (OPGW) and strands for conductors installed in overhead electrical lines. Trefinasa, by applying the same manufacturing process, manufactures aluminium tubes with optical fibre inside for OPGW conductors, as well as aluminium profiles for insulated cables, flat wires for the automotive, electrical and renewable industries and aluminium tubes for refrigeration, home appliances, automotive industry and rivets).
Since 2018 and once the acquisition of the rights for MADE HERRAJES was completed, TREFINASA offers a complete solution including in its range of products the fittings for insulator string, bolted and compression clamps and accessories up to 500kV OHL.
Trefinasa supplies to the most relevant European OPGW and ACSR manufactures, as well as to different electrical companies and appliance companies.
HTLS GAP Conductor - ACS and Alumoweld Wire
TREFINASA deployed in 2006 the manufacturing GAP technology for High Temperature Low Sag conductors. These conductors are able to dispatch more power and reduce joule losses at standard operating temperatures, keeping the same safety clearances than their equivalent hard drawn aluminium conductor due to the possibility to continuously run at higher operation temperature.
Nowadays TREFINASA is developing the ACSS technology for High Temperature Low Sag conductors to complete the wide range of available products for the upgrade of existing OHL at a very beneficial investment-cost ratio.