Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1982-02-17
1983-11-29
Christian, Leonard D.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
29 2542, 242 561, 324 54, B65H 3916, H01G 700
Patent
active
044177011
ABSTRACT:
A method of, and means for, controlling the manufacture of a winding for an inductive apparatus, for example a transformer winding or a reactor winding, which winding is of the kind comprising a plurality of turns of a sheet composed of an electrically conductive metallic foil and an electrically insulating film on each side of the metallic foil. During the winding of the sheet, the metallic foil together with the insulating films is passed through at least one electrode device which comprises at least two rolls arranged one on each side of the sheet and having a different voltage compared with the metallic foil. At the electrode device, the insulating films are pressed with a certain pressure against the metallic foil across the entire width of the latter by means of the rolls, and the electrical insulation of both sides of the sheet is checked by separately sensing the leakage current which via each of the rolls passes through the respective insulating film.
REFERENCES:
patent: Re30775 (1981-10-01), Miller et al.
patent: 2942248 (1960-06-01), Huggins
patent: 3355664 (1967-11-01), Pranke
patent: 3407465 (1968-10-01), Ortel
patent: 4276683 (1981-07-01), Konno et al.
ASEA Aktiebolag
Christian Leonard D.
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