DE1913329A1 - Winding for dry and oil transformers and chokes made of conductive foil - Google Patents

Description

Licentia Patent - Verwaltungs - GmbH 6 Frankfurt (Main), iPheodor-Stern ~ Kai 1

FST 69/2 Le Frankfurt, 13th Kara 1969

(L 26/298) Pf-FSf / Lehoann / hr

Winding for dry and oil transfoxmators and chokes made of conductive foil

Addition to Pat. «» ... ... (patent application P 15 13 906.7)

The Pat®at. ... ·> (the Patentanaeldung P 15 15 906.7) "refers ein® winding for dry and öltransformator® !!, and thrushes, from senior Foli © in © d r ein® series of lOlienbandwickölm <- from Polienbäaäern gewiek. © lt © n, ^ eilspulen - lined up next to each other and together> circuit is ₉ where the layer insulation of the foil layers

009839/1082

consists of insulating tape protruding on both sides and this consists of elastic material or material that shrinks during heat treatment and the protruding edges due to corresponding winding tension or shrinkage subsequent heat treatment inwards in the radial direction are folded over and the hands cover several layers radially

This isolation arrangement is still not optimal Conditions, since along «the ob @ r fleeing the over» Standing edges of the layer insulation can form creepage paths that would over-oil or break down the insulation material can initiate between adjacent coils. In particular, the loose superstructures of the Layer insulation does not guarantee the mechanical rigidity and strength of the coil.

However zuverlässig® isolation and in particular an absolute stiffness of the coil at a Wickläng by patent · .. _{e "eo} (P & teatanraei & msg P 1f? 13906"?] He invention convention under achieved _B that about stand @ n € le & is transferring switch edges the lMig®m ± Bola, tton is wetted on all sides siad and nst @ i> on Mg © ® $ m.®t d © r

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ment exactly in the radial dimensions Washer made of insulating material for a compact Ioolier- * layer pressed end cured aind

In the case of round bobbins, there is generally sufficient flexibility for further processing. However all coils old from the shape deviating from the rice form are produced, for example square or semicircular, it is very difficult to give the coil this shape lend permanently against the elastic forces of the Viokelaateriaia au, since these iaaer strive to keep the straight lines Side of the coil an outwardly curved claw bow * to give shape *

By enclosing one of the desired Spulenfora exactly corresponding 8cheibe aua Iaolieretofί and the Terklefemg this Seheibe alt the protruding bands of the Lekgenieolationen is the rorhandene ioragung the coil finally fixed. AU Ükterial for the washer For example, normal insulating paper is sufficient, especially if the layer insulation also consists of insulating paper, when choosing a suitable binding material enters into an intimate connection with these, whereby the band

009839/1082 BAD ORfGlNAL

1913320

partie takes on a preasspan-like character that known to have excellent insulating properties.

The simplest way of producing a disk from insulating material with the exact coil dimensions, ρ consists in gluing a not particularly adapted sheet onto the end face of the coils with the folded edges of the layer insulation and from this after the adhesive has hardened by traversing the coil contours with a. Knife to cut out the desired shape.

An example of the invention is shown in the accompanying drawing.

Fig. 1 shows a wound on a bobbin 1 made of foil tape 2 winding, with between the layers of the Foil tape die.Lagenisolationen 3 are wrapped, which is due to the elasticity of the material of the layer insulation at the edges protruding beyond the width of the metal foil folds radially inward, as it does in the patent. ... ... (patent application P 15 13 906.7) is provided.

ORIGINAL! NSPECiH) 009839/1082

1913 32α

71g. 2 shows a finished foil tape roll to the front * lying invention, with soft on the front sides the panes 4 made of insulating material are glued on and pressed on, so that these panes with the protruding edges of the layer insulation 3 and the applied A largely homogeneous pressboard-like adhesive Result in an insulating layer that has the best electrical insulating properties «

5 Rarely a description of 2 claims

1 sheet of drawing with 2 figures

OFtKSINALfNSPECTED 009839/1082

Claims (2)

Claims M T) winding for dry and oil transfer format oven and - chokes made of conductive foil, in which a series of foil tape windings - wound from foil tapes Partial coils - lined up next to each other and connected together, the layer insulation being the Foil layers consist of insulating tape protruding on both sides and this is made of elastic or at There is heat treatment of shrinking material and the protruding edges as a result of corresponding Winding tension or shrinkage in the event of subsequent heat treatment near the inside in the radial direction 009839/1082 .ORIGINAL INSPECTED and the edges radially cover several layers according to patent ... ... (patent application P 15 13 906.7), characterized in that the overhanging sands of the layer insulation are wetted on all sides with binding agent and with support of one of the winding exactly in the radial Dimensions corresponding to disk made of insulating material pressed into a compact X@oliersch.icht and hardened are. 2. winding according to claim 1, characterized in that that a paper web not adapted to the bobbin shape is glued and pressed on and that the laid paper web the exact dimensions by subsequent cutting out along the winding contours of the lap 009839/1082 ° Wginal tnspected Blank page