
Electric transformers
Electric transformers
Cobral supplies semi-finished non-ferrous metals ideal for the production of electrical transformers obtained from raw materials with a high conductivity value since the origin. Cobral enjoys the UNI EN ISO 9001: 2008 Quality Management System Certification and operates only alumina and copper supplied in accordance with the UNI EN standards: UNI EN 485/2 485/3 485/4 UNI EN 573-3 UNI EN 14121 e UNI EN 13599
The strips are the most demanding aluminum semi-finished products in the transformer industry
The high conductivity due to the purity of the raw material makes them particularly appreciated and ideal for this type of processing: in fact, Cobral-processed aluminum has a purity from 99.5% to 99.7%. To complete the quality of these aluminum laminates with a guarantee of more than 34.5 MS / m for material with physical status H0, are the production of un-flashed coils, narrow width tolerances, coiled cylindrical cardboard, with the possibility of adding the interlayers paper.
Quality, speed and product customization
Copper strips are Cobral’s response to the electrical transformer market
By processing a raw material with a purity of 99.98%, copper strips have high electrical conductivity. The quality of these semi-finished copper with warranty 58 MS / m, is also given by a longitudinal cut without burrs and with narrow width tolerances, by a winding with turns aligned on cardboard core and paper interlayer. As with aluminum strips, also for copper ribbons Cobral offers its clients a customized service, starting with the physical state of the metal: physical state R220 – R240 on cooked material. Thickness ranges from 0.20 mm to 3 mm and width from 8 mm to 1500 mm.
The coil is supplied with 3 sizes internal diameters: 300/400/500 mm and the outer one on request.
Also in the case of small quantities, Cobral guarantees quality, speed and product customization, from the physical characteristics from the metal to the packaging.