CH146083A - Device to reduce losses due to stray fields in oil transformers. - Google Patents
Device to reduce losses due to stray fields in oil transformers.Info
- Publication number
- CH146083A CH146083A CH146083DA CH146083A CH 146083 A CH146083 A CH 146083A CH 146083D A CH146083D A CH 146083DA CH 146083 A CH146083 A CH 146083A
- Authority
- CH
- Switzerland
- Prior art keywords
- stray fields
- losses due
- reduce losses
- oil transformers
- iron sheets
- Prior art date
Links
Landscapes
- Regulation Of General Use Transformers (AREA)
Description
Einrichtung zur Verminderung der Verluste durch Streufelder in Öltransformatoren. Neuere Transformatoren werden aus Be triebsgründen vielfach mit verhältnismässig grosser Streuung ausgeführt. Dabei treten die Streulinien stellenweise auf die Ölkasten- wand übe'r und verursachen dort durehWir- belstrombildung Verluste und örtliche Er wärmungen.
Dies zu verhindern und die Verluste au± ein Mindestmass zu beschränken, dient die vorliegende Erfindung. Sie besteht darin, dass man die Innenwand des Ölkastens, wenigstens an den der Streuung besonders aus 'gesetzten Stellen, mit einer Schicht von im Verhältnis zur Kastenwand dünnen Eisen blechen bekleidet. Diese Schicht ist* zweck- mässigerweise so gestaltet, dass sie den Streu linien den Eintritt erleichtert und ihnen einen magnetisch besser leitenden Weg darbietet als die Kastenwand selbst.
Um den Streulinien den Eintritt an bestimmten, vorgesehenen Stellen zuerleichtern, sollen die Bleche ihnen jeweils auf grösserer Fläche ihre schmale Kanten darbieten. Jedes Streufeld wird dann in Richtung der Längsausdehnung der Bleche bis zu seinem Austritt an der entgegengesetz t' tD ten Kante des jeweils gleichen Bleches weiter- n geleitet, ohne die wirbelstromgefährdeten massiven Kastenwände zu durchsetzen.
Es ist zweckmässig, diese Hilfsbleche an den Ein- und Austrittsstellen der Streulinien in be- kannter Weise treppenförmig abzustufen.
Device to reduce losses due to stray fields in oil transformers. For operational reasons, newer transformers are often designed with a relatively large spread. The scattering lines step over the oil tank wall in places and cause losses and local warming there due to the formation of eddy currents.
The present invention serves to prevent this and to limit the losses to a minimum. It consists in clad the inner wall of the oil box, at least at the points particularly exposed to the scattering, with a layer of iron sheets which are thin in relation to the box wall. This layer is expediently designed in such a way that it makes it easier for the scattering lines to enter and offers them a magnetically better conductive path than the box wall itself.
In order to make it easier for the scatter lines to enter certain, designated places, the metal sheets should present their narrow edges over a larger area. Each stray field is then passed on in the direction of the longitudinal extension of the sheets until it emerges at the opposite edge of the same sheet without penetrating the massive box walls, which are at risk of eddy currents.
It is expedient to graduate these auxiliary sheets in a known manner at the entry and exit points of the scattering lines.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE146083X | 1929-04-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH146083A true CH146083A (en) | 1931-03-31 |
Family
ID=5671131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH146083D CH146083A (en) | 1929-04-19 | 1930-04-10 | Device to reduce losses due to stray fields in oil transformers. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH146083A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1062341B (en) * | 1958-03-25 | 1959-07-30 | Siemens Ag | Transformer winding |
DE1087262B (en) * | 1957-09-12 | 1960-08-18 | Licentia Gmbh | Arrangement to reduce the eddy current losses in pressure bodies made of ferromagnetic material for transformer windings u. like |
-
1930
- 1930-04-10 CH CH146083D patent/CH146083A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1087262B (en) * | 1957-09-12 | 1960-08-18 | Licentia Gmbh | Arrangement to reduce the eddy current losses in pressure bodies made of ferromagnetic material for transformer windings u. like |
DE1062341B (en) * | 1958-03-25 | 1959-07-30 | Siemens Ag | Transformer winding |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH146083A (en) | Device to reduce losses due to stray fields in oil transformers. | |
AT100421B (en) | Single or multi-pole oil switch. | |
DE920315C (en) | Cover plate for switchboards | |
DE387006C (en) | Arrangement for increased cooling of the oil in oil containers for electrotechnical purposes, in particular air-cooled transformer boxes of great height | |
DE513105C (en) | Trough-shaped iron sheet pile | |
DE603944C (en) | Tin box with a hinge | |
DE386328C (en) | Oil boxes for transformers and other electrical devices with smooth walls and straight tubes for oil circulation between the flanges of strong components that close the box at the top and bottom | |
DE571306C (en) | Iron sheet pile wall | |
AT112940B (en) | Process for the manufacture of coolers. | |
DE632857C (en) | Roll film spool | |
AT118547B (en) | Lids for junction boxes. | |
DE415187C (en) | Sealing closure plate for carrying out the process | |
DE412591C (en) | Bearing shell | |
DE416655C (en) | Sheet metal fitting for storage of the drive bolt of a rod lock for windows and doors | |
AT126550B (en) | Jet regulator for Woltman water meters. | |
DE452105C (en) | Luminous letter or light bar or characters for advertising purposes with covered exposure, which consists of two light boxes showing the letter outlines twice | |
DE438606C (en) | Detachable shipping container | |
DE588284C (en) | Skimming and sludging device designed as a funnel for steam boilers | |
DE570950C (en) | Device on relay cards for fastening the cards in tubular holders that serve as spacers | |
DE543954C (en) | Device for reducing the amount of steam in front of the anodes of mercury vapor rectifiers in metal housings | |
AT96315B (en) | Slide closure for cans and. like | |
DE639921C (en) | Device for the production of bimetal strips | |
AT142323B (en) | Folding box. | |
DE929545C (en) | Device for dearsenating sulfuric acid up to 60íÒBe and hydrochloric acid | |
DE543766C (en) | Use of an alloy consisting of silicon and nickel for the production of castings |