US2153090A - Electric transformer for high tension - Google Patents

Electric transformer for high tension Download PDF

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Publication number
US2153090A
US2153090A US185956A US18595638A US2153090A US 2153090 A US2153090 A US 2153090A US 185956 A US185956 A US 185956A US 18595638 A US18595638 A US 18595638A US 2153090 A US2153090 A US 2153090A
Authority
US
United States
Prior art keywords
insulating
high tension
paper
electric transformer
core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US185956A
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English (en)
Inventor
Libbe Alfred
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
"TRANSFORMATEURS DE MESURE E WALTER" GENTILLY SA
TRANSFORMATEURS DE MESURE E WA
Original Assignee
TRANSFORMATEURS DE MESURE E WA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TRANSFORMATEURS DE MESURE E WA filed Critical TRANSFORMATEURS DE MESURE E WA
Application granted granted Critical
Publication of US2153090A publication Critical patent/US2153090A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/341—Preventing or reducing no-load losses or reactive currents
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/10—Single-phase transformers

Definitions

  • the present invention relates to transformers and particularly pertains to the insulation of transformers having open magnetic circuits.
  • the insulation is open on the high-tension end, and in order to obtain a sufficient path to prevent fiashovers, the part of the insulating elements which projects from the end of the iron core must be transportation and the assembling.
  • This result can be obtained by an arrangement accordin to the present invention in which the insulation is closed on the high tension end so that it surrounds the free end of the core.
  • the insulation consists of paper bands wound according to a cylinder and having conducting sheets between them, the layers of paper can be bent over, at the free ends, towards the interior, and the insulating elements can be closed on the upper side by insulating discs. It is preferable to mount conducting sheets between the discs, and such sheets should be electrically connected to the cyq lindrical conducting sheets.
  • the accompanying drawing shows by way of example a constructional form of a transformer according to the invention.
  • the figure is a view in which the right-hand half represents, in elevation; the outer parts of the transformer, and the left-hand half is a vertical section showing the insulating elements and the windings.
  • the magnetic iron core 2 is secured to an iron base I which serves to reduce the reluctance of the magnetic circuit.
  • the base I is attached to the core by means of a spindle passing through the core, and by a. disc 3 which is urged against the upper end of the core 2 by means of a nut 4.
  • the core 2 carries a low-tension winding 5 which is cylindrical and surrounds the core.
  • the winding 5 rests upon an insulating disc 6, and the insulating covering 1 consisting of layers of paper 5 9 surrounding the insulating tube 8, also rests upon the disc 6.
  • These layers 9 are obtained by winding single bands of paper, with the interposition of metal sheets, as shown in the figure by the dotted lines. 10
  • the thickness of the insulating sheath increases from the bottom to the topand this increase corresponds to an increasing number of layers of paper, so that the surface portion provided with the high-tension winding ID, has a tapered form, which spreads out at the top.
  • the layers of paper are folded, one by one, towards the interior, and the edge of the first layer 9 which follows the insulating tube 8 is applied against the cover ll of this tube.
  • a disc of paper I2 rests upon the folded end of the first layer 9 and this disc comprises a sheet metal piece which is shown in dotted lines electrically connected to the sheet metal piece which surrounds the layer of paper 9.
  • the sheet metal is also connected with the end of the first fraction (counting from the bottom) of the high-tension winding Ill.
  • the beginning of this fraction of the winding I0 is electrically connected to the core which is grounded and to the metallic layer with which the insulating cylinder 8 is covered.
  • holes can then be formed in the discs l2 and I2 for the oil circulation. These holes preferably have a staggered arrangement, and may thus be loextending above the windings at the high tension end consisting of layers oi paper, metallic sheets between said layers for forming condenser coatings, said layers being bent towards the interior at the upper part of the insulating assembly, and insulating discs inserted between said bent parts for holding'them.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Insulating Of Coils (AREA)
  • Transformers For Measuring Instruments (AREA)
US185956A 1937-01-14 1938-01-20 Electric transformer for high tension Expired - Lifetime US2153090A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE204606X 1937-01-14

Publications (1)

Publication Number Publication Date
US2153090A true US2153090A (en) 1939-04-04

Family

ID=5782728

Family Applications (1)

Application Number Title Priority Date Filing Date
US185956A Expired - Lifetime US2153090A (en) 1937-01-14 1938-01-20 Electric transformer for high tension

Country Status (4)

Country Link
US (1) US2153090A (de)
AT (1) AT157344B (de)
CH (1) CH204606A (de)
GB (1) GB495921A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445169A (en) * 1944-12-05 1948-07-13 Mallory & Co Inc P R Electrical transformer and primary winding thereof
US2455960A (en) * 1945-11-16 1948-12-14 Mallory & Co Inc P R Electrical transformer
US2515874A (en) * 1946-09-17 1950-07-18 Rca Corp Transformer
US2799836A (en) * 1953-02-19 1957-07-16 Robert E Heller Pulse transformer
US2937349A (en) * 1955-10-12 1960-05-17 Gen Electric Stationary induction electrical apparatus
US2993183A (en) * 1957-10-30 1961-07-18 Westinghouse Electric Corp Transformer structures
US3524126A (en) * 1967-04-21 1970-08-11 Bbc Brown Boveri & Cie Transformer for transmitting pulses or power at stepped high-voltage potential
US4580122A (en) * 1982-11-26 1986-04-01 Robert Bosch Gmbh Ignition coil for ignition systems of internal combustion engines

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE898495C (de) * 1940-04-27 1953-11-30 Siemens Reiniger Werke Ag Roentgeneinrichtung, bei der die Roentgenroehre und der Hochspannungserzeuger in einem gemeinsamen geerdeten Gehaeuse untergebracht sind

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445169A (en) * 1944-12-05 1948-07-13 Mallory & Co Inc P R Electrical transformer and primary winding thereof
US2455960A (en) * 1945-11-16 1948-12-14 Mallory & Co Inc P R Electrical transformer
US2515874A (en) * 1946-09-17 1950-07-18 Rca Corp Transformer
US2799836A (en) * 1953-02-19 1957-07-16 Robert E Heller Pulse transformer
US2937349A (en) * 1955-10-12 1960-05-17 Gen Electric Stationary induction electrical apparatus
US2993183A (en) * 1957-10-30 1961-07-18 Westinghouse Electric Corp Transformer structures
US3524126A (en) * 1967-04-21 1970-08-11 Bbc Brown Boveri & Cie Transformer for transmitting pulses or power at stepped high-voltage potential
US4580122A (en) * 1982-11-26 1986-04-01 Robert Bosch Gmbh Ignition coil for ignition systems of internal combustion engines

Also Published As

Publication number Publication date
GB495921A (en) 1938-11-22
AT157344B (de) 1939-10-25
CH204606A (fr) 1939-05-15

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