EP0217103A1 - Transformateur à encapsulage isolant coulé - Google Patents

Transformateur à encapsulage isolant coulé Download PDF

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Publication number
EP0217103A1
EP0217103A1 EP86111589A EP86111589A EP0217103A1 EP 0217103 A1 EP0217103 A1 EP 0217103A1 EP 86111589 A EP86111589 A EP 86111589A EP 86111589 A EP86111589 A EP 86111589A EP 0217103 A1 EP0217103 A1 EP 0217103A1
Authority
EP
European Patent Office
Prior art keywords
transformer
winding
connection rubber
iron core
connection
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.)
Granted
Application number
EP86111589A
Other languages
German (de)
English (en)
Other versions
EP0217103B1 (fr
Inventor
Peter Dipl.-Ing. Bradt
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT86111589T priority Critical patent/ATE43454T1/de
Publication of EP0217103A1 publication Critical patent/EP0217103A1/fr
Application granted granted Critical
Publication of EP0217103B1 publication Critical patent/EP0217103B1/fr
Expired 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
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • 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
    • H01F27/02—Casings
    • H01F27/022—Encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/005—Impregnating or encapsulating

Definitions

  • the invention relates to a transformer with a cast insulating jacket, in particular for underfloor airfield lighting, and a method for its production.
  • Such transformers are recessed into the runways of airfields with the connected headlights and, in addition to a small installation space, must have complete tightness and resistance to alkalis, acids and sea water, in particular to ensure operational safety.
  • a high-voltage-resistant, insulating-coated transformer in particular for use in underfloor airport lighting systems, is to be created which, despite simple manufacture and only a small size, can ensure the tightness and required resistance to sea water and alkalis and acids.
  • the transformer according to the invention without additional separate buffering of the active part, with its only directly injection-molded elastic sheathing of the winding applied to a coil former spacing the iron core on all sides and the injection of the space between the iron core and coil former, which is ensured in a simple manner by the spacer webs requirements for tightness and resistance to soil, sea water as well as alkalis and acids can be met even if the inner active part heats up;
  • the penetration of moisture along the outward connection means for the outer connection line is now also clearly prevented by the fact that the connection rubber bushings which are pre-fixed on the coil former and already co-injected during the production of the sheathing during cooling of the insulating sheath in the sense of a press connection with a high sealing pressure of the injection molding compound are enclosed.
  • connection rubber bushings for holding the part to be overmolded at least consisting of core, bobbin with primary or secondary winding and pre-fixed connection means existing connection part for holding in the injection mold until the overmolded insulation cools mass shared.
  • injection is preferably carried out in the direction of the coil axis.
  • the coil former 2 used in the transformer according to the invention is shown in FIGS. 1 to 3.
  • the winding space for the primary winding 7 is located between the right end flange 21 and the opposite central flange 23, and the winding space for the secondary winding 8 is located between the left end flange 22 and the opposite central flange 24.
  • At the top of the coil former 2 are 21 on the right end flange 21 two brackets 25, 26 for the pre-fixed mounting of connection rubber bushings 3, 4 for the primary winding 7 and on the upper side of the left end flange 22 a mounting bracket 27 for the pre-fixed mounting of a connection rubber bushing 5 for the secondary winding 8 is also molded.
  • Fig. 4 shows a single connection rubber bushing 4, which receives in its center a connection means for the respective winding end and an outer connection line and has a pin 41 cast into the side of this connection means, with which the connection rubber bushing 4 connects to the in 3 shown mounts can be inserted and thereby pre-fixable.
  • a plug-in sleeve 10 is inserted as a connection means into the connection rubber bush.
  • One winding end of the primary or secondary winding 7 or 8 is inserted and soldered or crimped into the lower sleeve part protruding from the connecting rubber bushing; a plug connected to the stripped part of an outer connecting line is inserted into the upper sleeve part, the stripped part of the outer connecting line being pressed directly or indirectly into the recess 42 of the connecting rubber bushing.
  • 11 is a second embodiment of an advantageously sealed connection vulcanized into the connecting rubber bushing 4 as a prefabricated connecting component, the inner stripped end 92 of which is stripped and protrudes from the connecting rubber bushing and is connected to one winding end of the primary and secondary winding 7; 8.
  • connection rubber bushings 3 The assembly of the entire bobbin 2 with all pre-fixed connection rubber bushings can be seen in Figures 5,6 and 9.
  • the high-voltage primary winding has two separate connection rubber bushings 3, 4, each with a connection means 71 and 72, respectively, for connecting an outer line to the primary winding 7; in the single rubber socket 5 for the secondary winding 8, both connection means 81, 82 for the outer line or the winding ends of the secondary winding 8 are combined.
  • FIGS. 7, 8 show the wound and equipped active part of the transformer according to FIG. 5 or FIG. 6 after the molded insulating jacket; 10 shows the view of the active part of the transformer according to FIG. 9 after its injection-molded casing.
  • spacer webs 28 are attached to the inner surfaces of the rectangular coil core of the coil body 2, which comprises the inserted iron core, such that the transformer iron core 1 is kept at a distance from the coil body 2 in accordance with the height of the distance webs 28 the resulting space between the transformer iron core 1 and the coil body 2 and thus the primary winding 7 and secondary winding 8 can also be completely filled with the injection-molded insulating material made of elastic thermoplastic.
  • the spacer webs 28 abut one another outside the corners the inner surfaces of the right-angled coil core of the coil body 2 are arranged so that the core corners, at which particularly high field strengths occur, have reliable insulation from the surrounding primary or secondary winding.
  • an earthing strap 6, which protrudes from the injection-molded insulating jacket can additionally be welded onto the outside of the laminated core, for example.
  • the wound and equipped active part to be overmolded is advantageously set up in the injection mold by means of its connecting rubber bushings 3-5, so that no further additional external spacing means are necessary which could give rise to dangerous inhomogeneous zones in the insulating sheathing .
  • the injection molding compound filled in under high pressure is preferably injected in the direction of the coil axis, so that the transformer is held in the injection mold in the centered position and thus sufficient insulation sheathing guaranteed on all sides.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Of Coils (AREA)
  • Insulating Bodies (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP86111589A 1985-09-03 1986-08-21 Transformateur à encapsulage isolant coulé Expired EP0217103B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111589T ATE43454T1 (de) 1985-09-03 1986-08-21 Transformator mit gegossener isolierummantelung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3531445 1985-09-03
DE3531445 1985-09-03

Publications (2)

Publication Number Publication Date
EP0217103A1 true EP0217103A1 (fr) 1987-04-08
EP0217103B1 EP0217103B1 (fr) 1989-05-24

Family

ID=6280041

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111589A Expired EP0217103B1 (fr) 1985-09-03 1986-08-21 Transformateur à encapsulage isolant coulé

Country Status (7)

Country Link
US (1) US4763095A (fr)
EP (1) EP0217103B1 (fr)
JP (1) JPS6255914A (fr)
AT (1) ATE43454T1 (fr)
DE (1) DE3663601D1 (fr)
DK (1) DK415186A (fr)
FI (1) FI862409A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056214A (en) * 1989-12-19 1991-10-15 Mark Iv Industries, Inc Method of making a molded transformer enclosure
US5589808A (en) * 1993-07-28 1996-12-31 Cooper Industries, Inc. Encapsulated transformer
US5528091A (en) * 1994-05-16 1996-06-18 Xolox Corporation Swing-type actuator and device for locating terminal pins relative to coil for same
DE19613127A1 (de) * 1996-04-02 1997-10-09 Sel Alcatel Ag Spulenkörper für die Ständerwicklung eines Elektrokleinmotors und mit diesem hergestellter Elektrokleinmotor
US5853643A (en) * 1996-07-19 1998-12-29 Bauer; Scott V. Method for constructing a liquid-impervious electric motor assembly
MY120386A (en) * 1999-07-28 2005-10-31 Samsung Electronics Co Ltd High voltage transformer for microware oven and method of manufacturing therefor.
EP2426679A1 (fr) * 2010-09-03 2012-03-07 RS Isolsec, S.L. Transformateur de tension/courant avec boitier intégral en résine moulée et sa méthode de fabrication

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725539A (en) * 1954-05-21 1955-11-29 Elastic Stop Nut Corp Transformers
FR1525962A (fr) * 1967-01-26 1968-05-24 Augier Sa Transformateur pour l'éclairage public
US4019167A (en) * 1975-05-19 1977-04-19 Amerace Corporation Encapsulated transformer
GB2089764A (en) * 1980-11-25 1982-06-30 Legrand Sa Coil former for transformer
FR2529376A1 (fr) * 1982-06-28 1983-12-30 Siemens Ag Petit transformateur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525966A (en) * 1968-07-24 1970-08-25 Square D Co Encapsulated coil and method of making same and spacer for use during encapsulation
DE7309528U (de) * 1973-03-13 1973-06-07 Siemens Ag Spule insbesondere erregerspule fuer laugenpumpen
US3909759A (en) * 1974-04-08 1975-09-30 Gen Electric Bushing well for instrument transformer and transformers including such well
US3959760A (en) * 1974-04-08 1976-05-25 General Electric Company Dry type instrument transformer with potential tap and connector therefor
US4161776A (en) * 1977-07-13 1979-07-17 Denki Onkyo Co., Ltd. Flyback transformer with high tension connector
JPS608412Y2 (ja) * 1980-03-12 1985-03-25 三洋電機株式会社 フライバツクトランス
NL8105830A (nl) * 1981-12-24 1983-07-18 Philips Nv Werkwijze voor het met een isolerende laag bedekken van een induktieve stabilisatieballast, alsmede induktieve stabilisatieballast die volgens die werkwijze met een isolerende laag bedekt is.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725539A (en) * 1954-05-21 1955-11-29 Elastic Stop Nut Corp Transformers
FR1525962A (fr) * 1967-01-26 1968-05-24 Augier Sa Transformateur pour l'éclairage public
US4019167A (en) * 1975-05-19 1977-04-19 Amerace Corporation Encapsulated transformer
GB2089764A (en) * 1980-11-25 1982-06-30 Legrand Sa Coil former for transformer
FR2529376A1 (fr) * 1982-06-28 1983-12-30 Siemens Ag Petit transformateur

Also Published As

Publication number Publication date
DK415186D0 (da) 1986-09-01
JPS6255914A (ja) 1987-03-11
DE3663601D1 (en) 1989-06-29
FI862409A (fi) 1987-03-04
DK415186A (da) 1987-03-04
US4763095A (en) 1988-08-09
ATE43454T1 (de) 1989-06-15
FI862409A0 (fi) 1986-06-05
EP0217103B1 (fr) 1989-05-24

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