DE3630415A1 - Transformer which is constructed as a tapped transformer and is insulated with cast resin - Google Patents

Transformer which is constructed as a tapped transformer and is insulated with cast resin

Info

Publication number
DE3630415A1
DE3630415A1 DE19863630415 DE3630415A DE3630415A1 DE 3630415 A1 DE3630415 A1 DE 3630415A1 DE 19863630415 DE19863630415 DE 19863630415 DE 3630415 A DE3630415 A DE 3630415A DE 3630415 A1 DE3630415 A1 DE 3630415A1
Authority
DE
Germany
Prior art keywords
load selector
transformer
oil
transformer according
step transformer
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
DE19863630415
Other languages
German (de)
Other versions
DE3630415C2 (en
Inventor
Karl Dipl Ing Stenzel
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.)
Maschinenfabrik Reinhausen GmbH
Original Assignee
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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 Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
Priority to DE19863630415 priority Critical patent/DE3630415A1/en
Priority to FR8710623A priority patent/FR2603734B1/en
Publication of DE3630415A1 publication Critical patent/DE3630415A1/en
Application granted granted Critical
Publication of DE3630415C2 publication Critical patent/DE3630415C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/025—Constructional details of transformers or reactors with tapping on coil or windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0044—Casings; Mountings; Disposition in transformer housing

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Transformer Cooling (AREA)

Abstract

The taps of the transformer are fed to a conventional, oil-filled, cylindrical, built-in load selector. Said load selector is arranged in a free-standing manner alongside the transformer, above an oil catchment sump or oil quenching (extinguishing) sump which is filled with coarse gravel. It has no pressure-relief device at its head, while a bursting plate which responds to a sudden rise in pressure is provided in the base of the load selector.

Description

Die Erfindung bezieht sich auf einen als Stufentransformator ausgebildeten gießharzisolierten Transformator gemäß Oberbegriff des Patentanspruches 1.The invention relates to a step transformer trained cast resin insulated transformer according to the generic term of claim 1.

In zunehmendem Maße werden derartige Transformatoren als Austauschtransformatoren für clophenisolierte Transformatoren eingesetzt. Hierbei liegt die Schwierigkeit in der Ausbildung des Stufenschaltwerkes, da die ursprünglichen clophenisolierten Transformatoren üblicherweise mit ölgefüllten Einbau-Lastwählern ausgerüstet sind.Such transformers are increasingly being used as Replacement transformers for clophen insulated transformers used. The difficulty here lies in the training of the tap changer since the original clophen insulated Transformers usually with oil-filled built-in load selectors are equipped.

Die Erfindung stellt sich die Aufgabe für die eingangs genannten Stufentransformatoren ein Stufenschaltwerk anzugeben, das die Vorteile der ölgefüllten Einbau-Stufenschalter nutzt. Diese Aufgabe wird durch die im Kennzeichen des Patentanspruches 1 angegebenen Mittel gelöst.The invention has as its object the aforementioned Step transformers to specify a tap changer that the Benefits of the oil-filled built-in tap changer. These Task is by in the characterizing part of claim 1 specified means solved.

Die Unteransprüche geben vorteilhafte Weiterführungen der Erfindung an.The subclaims give advantageous continuations of Invention.

Der mit der Erfindung erzielte Vorteil liegt in der Verwendung der herkömmlichen Lastwähler auch bei gießharzisolierten Stufentransformatoren, und zwar unter Vermeidung jeglicher Brandgefahr. Sollte es zu einem Schaden am freistehenden Lastwähler kommen, so ist durch die im Boden des Lastwählers angeordnete Berstplatte sichergestellt, daß das eventuell austretende Öl sicher aufgefangen wird und daß durch die im Auffangbecken angeordnete Kiesschicht ein Brennen des Öles vermieden wird.The advantage achieved with the invention lies in the use the conventional load selector even with cast resin insulated Step transformers, avoiding any Risk of fire. Should there be damage to the free-standing load selector come, is by the arranged in the bottom of the load selector Rupture plate ensures that the oil that may leak is caught safely and by the in the catch basin arranged gravel layer a burning of the oil is avoided.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird anschließend näher beschrieben:An embodiment of the invention is in the drawing is shown and then described in more detail:

Wie aus der Figur ersichtlich, befindet sich am Kern 1 des Gießharztransformators 2 eine Traverse 3. An dieser Traverse 3 ist freistehend der Lastwähler 4, der als herkömmlicher zylindrischer Einbau-Lastwähler mit eigenem Ölausdehnungsgefäß 17 ausgeführt ist, angehängt. Die Verbindungsleitungen 5 führen von den Klemmen 6 des Transformators zu den Anschlußkontakten 7 des Lastwählers. Die Verbindungsleitungen 5 sind natürlich isoliert. Ebenfalls sind die Kontaktverbindungen zwischen den Verbindungsleitungen 5 und den Anschlußkontakten 7 isoliert, was zweckmäßig mittels einer aufschrumpfbaren schlauchartigen Isolierung geschieht. Im übrigen sind die Anschlußkontakte 7 außerhalb der eigentlichen Kontaktflächen epoxydharzbeschichtet, um so Kriechströme zwischen den Anschlußkontakten zu vermeiden. Der Lastwähler 4 wird mittels eines ebenfalls von der Traverse 3 getragenen Motorantriebs 8 auf übliche Weise betätigt. Der Kopf 9 und insbesondere der Deckel 10 des Lastwählers sind jedoch in Abweichung von herkömmlichen Lastwählern ohne Druckentlastungsvorrichtung, wohingegen der Boden 11 des Lastwählers eine Berstplatte 12 enthält, die bei plötzlich im Lastwähler auftretenden Überdruck zerstört wird. Unterhalb des Lastwählers 4 ist eine Ölauffanggrube 13, die mit groben Kieseln aufgefüllt ist, angeordnet. Diese Grube 13 ist dann ferner über eine Sammelleitung 14 mit einem Ölsammelbehälter 15 verbunden. Zwischen dem unteren Ende des Lastwählers 4 und der Ölauffanggrube 13 ist ein Zylinder 16 vorgesehen, der ein seitliches Weglaufen oder Wegspritzen des möglicherweise plötzlich aus der Berstöffnung 12 austretenden Öls verhindert. Die groben Kiesel in der Grube 13 sorgen auf Grund der stark vergrößerten Oberfläche für ein rasches Abkühlen des heißen Öls.As can be seen from the figure, a crossbar 3 is located on the core 1 of the cast resin transformer 2 . The load selector 4 , which is designed as a conventional cylindrical built-in load selector with its own oil expansion vessel 17 , is attached to this crossbar 3 in a free-standing manner. The connecting lines 5 lead from the terminals 6 of the transformer to the connection contacts 7 of the load selector. The connecting lines 5 are of course insulated. The contact connections between the connecting lines 5 and the connecting contacts 7 are also insulated, which is expediently carried out by means of a shrinkable hose-like insulation. Otherwise, the connection contacts 7 are epoxy-coated outside the actual contact surfaces, so as to avoid leakage currents between the connection contacts. The load selector 4 is actuated in the usual way by means of a motor drive 8 likewise carried by the cross member 3 . The head 9 and in particular the cover 10 of the load selector are, however, in deviation from conventional load selectors without a pressure relief device, whereas the bottom 11 of the load selector contains a bursting plate 12 , which is destroyed in the event of excess pressure suddenly occurring in the load selector. An oil collecting pit 13 , which is filled with coarse pebbles, is arranged below the load selector 4 . This pit 13 is then also connected via a collecting line 14 to an oil collecting container 15 . A cylinder 16 is provided between the lower end of the load selector 4 and the oil collecting pit 13 , which prevents the oil that may suddenly emerge from the bursting opening 12 from running away or splashing away to the side. The coarse pebbles in the pit 13 provide for a rapid cooling of the hot oil due to the greatly enlarged surface.

Claims (6)

1. Als Stufentransformator ausgebildeter gießharzisolierter Transformator, bei dem die Anzapfungen einem Stufenschaltwerk zugeführt werden, dadurch gekennzeichnet, daß das Stufenschaltwerk ein herkömmlicher ölgefüllter zylindrischer Einbau-Lastwähler (4) ist, der freistehend neben dem Transformator (2) oberhalb einer mit groben Kies aufgefüllten Ölauffanggrube (13) bzw. Öllöschgrube angeordnet ist und dessen Kopf (9, 10) keine Druckentlastung besitzt, während im Boden (11) eine bei plötzlichem Druckanstieg ansprechende Berstplatte (12) vorgesehen ist.1. As a step transformer trained cast resin insulated transformer, in which the taps are fed to a tap changer, characterized in that the tap changer is a conventional oil-filled cylindrical built-in load selector ( 4 ), which is free-standing next to the transformer ( 2 ) above an oil collecting pit filled with coarse gravel ( 13 ) or oil extinguishing pit is arranged and the head ( 9 , 10 ) of which has no pressure relief, while in the bottom ( 11 ) a rupture plate ( 12 ) which responds to a sudden increase in pressure is provided. 2. Stufentransformator nach Anspruch 1, dadurch gekennzeichnet, daß zwischen Auffanggrube (13) und Lastwähler (4) ein das untere Ende des Lastwählers umgreifender Zylinder (16) angeordnet ist.2. Step transformer according to claim 1, characterized in that between the collecting pit ( 13 ) and load selector ( 4 ) is arranged around the lower end of the load selector cylinder ( 16 ). 3. Stufentransformator nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die in der Zylinderwand des Lastwählers sitzenden Anschlußkontakte (7) außerhalb der eigentlichen Kontaktflächen epoxydharzbeschichtet sind.3. Step transformer according to claim 1 or 2, characterized in that the connection contacts ( 7 ) seated in the cylinder wall of the load selector are coated with epoxy resin outside the actual contact surfaces. 4. Stufentransformator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Kontaktverbindungen zwischen den Anschlußleitungen (5) und den Anschlußkontakten (7) des Lastwählers (4) mit einer aufschrumpfbaren Isolierung versehen sind.4. Step transformer according to one of the preceding claims, characterized in that the contact connections between the connecting lines ( 5 ) and the connecting contacts ( 7 ) of the load selector ( 4 ) are provided with shrinkable insulation. 5. Stufentransformator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Volumen der Ölauffanggrube (13) eine Mehrfaches des im Lastwähler (4) vorhandenen Ölvolumens umfaßt.5. Step transformer according to one of the preceding claims, characterized in that the volume of the oil collecting pit ( 13 ) comprises a multiple of the oil volume present in the load selector ( 4 ). 6. Stufentransformator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Lastwähler (4) mit seinem Kopfflansch (9) an einer mit dem Kern (1) des Transformators (2) verbundenen Traverse (3) hängt.6. Step transformer according to one of the preceding claims, characterized in that the load selector ( 4 ) with its top flange ( 9 ) on a with the core ( 1 ) of the transformer ( 2 ) connected cross member ( 3 ).
DE19863630415 1986-09-06 1986-09-06 Transformer which is constructed as a tapped transformer and is insulated with cast resin Granted DE3630415A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19863630415 DE3630415A1 (en) 1986-09-06 1986-09-06 Transformer which is constructed as a tapped transformer and is insulated with cast resin
FR8710623A FR2603734B1 (en) 1986-09-06 1987-07-27 TRANSFORMER ISOLATED BY A CASTING RESIN AND COVERING THE FORM OF A STEP-BY-STEP TRANSFORMER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863630415 DE3630415A1 (en) 1986-09-06 1986-09-06 Transformer which is constructed as a tapped transformer and is insulated with cast resin

Publications (2)

Publication Number Publication Date
DE3630415A1 true DE3630415A1 (en) 1988-03-17
DE3630415C2 DE3630415C2 (en) 1991-11-07

Family

ID=6309066

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863630415 Granted DE3630415A1 (en) 1986-09-06 1986-09-06 Transformer which is constructed as a tapped transformer and is insulated with cast resin

Country Status (2)

Country Link
DE (1) DE3630415A1 (en)
FR (1) FR2603734B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5516992A (en) * 1992-05-15 1996-05-14 Maschinenfabrik Reinhausen Gmbh Transformer tap changing and step switch assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4216034C1 (en) * 1992-05-15 1993-12-09 Reinhausen Maschf Scheubeck Step switch for a preferably cast-resin-insulated step transformer

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE555061C (en) * 1929-12-17 1932-07-16 Sachsenwerk Licht & Kraft Ag Control transformer with attached control device for switching under load
DE913930C (en) * 1943-05-25 1954-06-21 Bernhard Jansen Dr Ing Step switching device for tapping transformers
DE922895C (en) * 1944-08-30 1955-01-27 Siemens Ag Protective arrangement to ensure the insulation strength
AT185441B (en) * 1954-01-13 1956-04-25 Elin Ag Elek Ind Wien Transformer assembled with a step regulator
DE1098604B (en) * 1959-09-16 1961-02-02 Licentia Gmbh Outlet device for diverter switch vessels built into the transformer tank
AT217118B (en) * 1959-09-16 1961-09-11 Licentia Gmbh Oil drain device for diverter switch vessels built into the transformer tank
DE1263172B (en) * 1961-08-16 1968-03-14 Siemens Ag Outlet device for diverter switch vessels built into the transformer tank
US3546535A (en) * 1967-10-10 1970-12-08 Smit Nijmegen Electrotec Transformers and composite tap changers associated therewith
DE1638386A1 (en) * 1967-06-08 1971-07-15 Licentia Gmbh Device for the operator-free drainage of rainwater from the oil collection pit of transformers installed outdoors

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57193013A (en) * 1981-05-22 1982-11-27 Toshiba Corp Low noise type transformer
JPS57211210A (en) * 1981-06-22 1982-12-25 Mitsubishi Electric Corp Oil-immersed electric device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE555061C (en) * 1929-12-17 1932-07-16 Sachsenwerk Licht & Kraft Ag Control transformer with attached control device for switching under load
DE913930C (en) * 1943-05-25 1954-06-21 Bernhard Jansen Dr Ing Step switching device for tapping transformers
DE922895C (en) * 1944-08-30 1955-01-27 Siemens Ag Protective arrangement to ensure the insulation strength
AT185441B (en) * 1954-01-13 1956-04-25 Elin Ag Elek Ind Wien Transformer assembled with a step regulator
DE1098604B (en) * 1959-09-16 1961-02-02 Licentia Gmbh Outlet device for diverter switch vessels built into the transformer tank
AT217118B (en) * 1959-09-16 1961-09-11 Licentia Gmbh Oil drain device for diverter switch vessels built into the transformer tank
CH378990A (en) * 1959-09-16 1964-06-30 Licentia Gmbh Oil drainage device for diverter switch vessels built into the transformer tank
DE1263172B (en) * 1961-08-16 1968-03-14 Siemens Ag Outlet device for diverter switch vessels built into the transformer tank
DE1638386A1 (en) * 1967-06-08 1971-07-15 Licentia Gmbh Device for the operator-free drainage of rainwater from the oil collection pit of transformers installed outdoors
US3546535A (en) * 1967-10-10 1970-12-08 Smit Nijmegen Electrotec Transformers and composite tap changers associated therewith
DE1802303B2 (en) * 1967-10-10 1971-09-23 TRANSFORMER WITH A TAP-SWITCH CONSISTING OF A LOAD CHANGEOVER AND A SELECTOR

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Gießharz-Transformatoren. Technische Information der Fa. Starkstrom-Gerätebau GmbH, Regensburg, Druckvermerk BTt 11/85, 1985 *
Umweltfreundliche Siliconflüssigkeit. In: Elektro-anzeiger 1981, H.10, S.18 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5516992A (en) * 1992-05-15 1996-05-14 Maschinenfabrik Reinhausen Gmbh Transformer tap changing and step switch assembly

Also Published As

Publication number Publication date
FR2603734B1 (en) 1990-04-06
FR2603734A1 (en) 1988-03-11
DE3630415C2 (en) 1991-11-07

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: MASCHINENFABRIK REINHAUSEN GMBH, 8400 REGENSBURG,

8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee