CATALOGUE

The EdM technology
Medium-voltage winding
The medium-voltage winding, made by highly
automated winding machines, is constructed with
the continuous disk technique and made in
aluminium strip, interleaved with double insulation.
This type of working produces uniformity of the
internal and external thickness of the resin and
guarantees uniform resistance to the dielectric
stresses to which the transformer will be subjected
in the inspection phase or during its operation at the
place of installation.
The primary winding has sockets to adjust the
primary voltage equal to the value ± 2 x 2.5%,
made with brass bushes protruding from the
resin, copper nuts and bolts and indelible
numbering.
The insulating materials used belong to class F
and the permitted temperature rises are those
specified in Standards IEC 60076-11.
The pouring system
under high vacuum.
Modern electronically
controlled winding
machines
108 EdM - CAST RESIN TRANSFORMERS