DE1975287U - PHASE INSULATION FOR WINDING HEADS. - Google Patents

Description

Idcentia Ifetent-Verwaltunge ~ <i.ii.b.H. Frankfurt (KaIn), afteodor-Stera-Eai 1

Erf.-Hr .: 66 / OOfr Ärankfurt, October 16, 1967

ffEW / ttei / h

Phase isolation for winding heads

Oils! Firing unit refers to a Sien Eaasenisolation for is (Präufelverfahren old hardening materials impregnated Vickel-, heads of electric machines.. '

Sine such phase isolation, which from. The shape and dimensions of the winding overhangs that are insulated in each case are: peJten stacks of insulating material, has the task of creating a chip breakdown as a fraction dielectric> from one winding overhang to the other in the winding overhangs; The insulating material used for this purpose must, on the one hand, have sufficient electrical · |

have stability, including not just the operating voltage, j but also to withstand the test voltage, on the other hand it must also be mechanically stable enough so that it j

inserted between the individual phases of the winding heads can be. After all, the "material must also have sufficient flexibility and conformability to" During the formation of the winding heads, they can be deformed without wires of adjacent phases push through the material.

, τ »?. ι 66/009

has sieve now been shown in practice that when using such Ifcasenisolationen are impregnated when the winding head e in Eriu feiverfahren *, where they sometimes remain the liquid saturant onto the winding head "& Um8m IiBt * from impregnating not reticulated Häume in Wikkelkopf"

To this on the electrical strength of the winding itself to eliminate a very disadvantageous deficiency «is done with phase isolation of the type described at the beginning according to the innovation proposed that a perforated insulation · « material is used, the high-voltage test of the machine should continue before the impregnation be carried out in order to be able to recognize any errors in good time and to be able to eliminate them, so a! the test voltage can be prevented in the non-impregnated state, if, according to a further 'feature of the innovation, the insulating material is in the installed, unimpregnated state has a thickness that can withstand the test voltage of the machine. Under perforated materials are all those To understand substances that are in some way liquid-permeable, that is, they are porous, sponge-like, foam-like or fabric-like.

Such a perforated one. Insulating material can consist of several Layers to be built up from different fabrics can consist, for example, of an inner elastic, mechanically stressable and two outer, only as Spacer layers * Appropriately can absorbent materials are used as external grinding, which prevent the impregnating agent hitting there when it drips immediately drains. Has absorbent material

Erf.-Np .. t .66 / 009 - 5 -

namely, a certain storage capacity, are allowed to do that Impregnating agent, instead of unsuitable draining, ssun next is held and therefore better through the perforation can penetrate through into the underlying parts of the winding head.

Execution examples of the innovation are in the drawing and are discussed in more detail below. Fig * 1 2eigt a cross section durah a phase isolation and Pig, Figure 2 gives a plan view of part of the same again «both in a greatly enlarged representation. the actual thickness of such phase isolation is for machines of medium power and operating voltage approx «0» 5 ~ ^ mm «,

The Ehaaeniaolation shown in Fig. 1 is made up of three Layers 1, 2, 3 built up »with the inner layer 1 an elastic and mechanically stressable material, for example a film, while the outer layers 2, 3 serve only as spacers and consist of an absorbent material such as blotting paper be able. The phase insulation is provided with openings 4, through which the impregnation agent can pass,

Fig. 2 shows the way in which the openings.4 can be arranged, for example *

Finally, FIG. 3 also shows an insulation insert which has an imperforate band 5. This design achieves that the tensile strength as is fully preserved with unperforated material. The imperforate edge can either be replaced by a corresponding

be trained as a liaison officer or? also, thereby, that nail, in the case of deformable materials, punches the insulation inserts out of perforated strips and then fuses the edge area under the action of heat.

When impregnating the winding heads of electrical machines using the trickling method, the wound stator is usually rotated slowly in a device, with the impregnating agent flowing onto the winding head at the same time from just one sighting, because the perforation ensures that parts of the rocker head located below the phase isolation are penetrated by the impregnating agent The outer circumference and the inner circumference of the winding head can be opened so that the impregnating agent reaches all of the winding head parts infighted and cheaper. The innovation also has a particularly advantageous effect "if it is not possible to drizzle over the outer circumference because the part * is located on the machine housing because it protrudes to the end of the winding. In addition, with the appropriate choice of the insulation material thickness, it is also possible to carry out the high-voltage test for aev windings before the winding heads are offended, so that defective windings and winding parts can be replaced in the simplest way and without significant loss.

4 pages description 9 protection claims

1 sheet of drawing with

5 figures

Claims (1)

Λ ". 1- P.A. 596 790 * 10/19/67 '- I Λ «· tfi «KteätV (Mal») «. :,. the 16th Olfct · 196? ■■ 'S β Ji u t .τ · ü e h e la irlaufirex 'lead with; Fabric ei »'soaked Vlok ^ l heads eleK-trioöbfti · Haa ^ hinen gf »ke ^ neei«) breath through 2i) Hiasenisolation according to Anaprueh i, thereby that the IsQXiermaterlal (1} 2; 3) an iro undefined state of the test voltage of the machine i , holding £ i «ke has, 3 «") ^ Haaenisolatloriv after A »apruch 1 or 2, gekennae.ioib.net; dui? Öb. A Mehrsßhiohtmafcerial (1; 2; 3) -». 4 «). Hiasenisoiatfio ^ according to claim 3 »thereby gelcennzeifhnet, P layers (1 | 2} 3) auo ve-raoliiedenön fabrics' t ' '' ■ *. ' ■ '. ■ - ^ ".
'■■ K- ·. '-.!' -. ; ^; ( ->.-S til: * ' 5> ·) "W * aa *» niaolation according to Annpruoh 1- ^ i, marked dupch An inner elastic, mechanically adjustable layer and outer, lecllglioh as spacers di «pind · layers (2} 3). β.) Phae «nisolAtion according to claims 1-5, thereby k« nni * lchn «t» that the outer right (2; 3) made of eeuggliche ^ material ?,) Phaseniaolation according to claim 1-6, characterized GEK "NNSS t> leans that five layers Nind present in the order of Fl te oil paper" laminated paper - "· foil laminated paper - Pließpapi # * r 8.) Fhaeenieolation according to claims 1-7 «characterized ;, that the Ieolationsbeilagen a non-perforated
(5) 9 «) Fhaeeni eolation according to claims 1-8, characterized ^ ₁ that a. Tissue either ale, inner layer (1) or is used for it alone »