Finishing Steps
ASTA is a manufacturer of high-quality winding material for large electrical machinery as transformers and generators. Starting with continuous cast wire rod, high-precision flat conductors are produced in bare wire manufacturing. After insulating the single conductors, they are finished further into continuously transposed conductors, Roebel bars, single and multiple conductors with a great variety of insulation systems.
Quality assurance
Quality is at the center of the manufacturing process. Here quality stands not only for the product quality, but also the quality of all processes.
All processes are subject to constant quality control. ASTA has the latest inspection and measuring equipment.
High-quality copper continuous cast wire rod is the beginning of the manufacturing process.
The copper wire is predrawn round and then rolled into high-precision flat wires in accordance with the respective customer specification.
Insulation of the copper wire is a core process. The insulation determines the service life of the final product to a great extent.
Enamel insulation systems are further developed either in-house or together with the suppliers.
Compactness, dimensional accuracy and easy winding of the bundle of conductors are the most important criteria in the production of CTCs.
ASTA’s own CTC head allows transposing for extreme dimensions and short transposing lengths.
ASTA also offers suitable insulation systems for the greatest variety of applications.
Besides enamel, ASTA also offers insulation with special paper, films, continuous glass yarn or a combination of them.