US3250865A - Transfer switch for tapped regulating transformers with radial guide and linkage structure - Google Patents

Transfer switch for tapped regulating transformers with radial guide and linkage structure Download PDF

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Publication number
US3250865A
US3250865A US369475A US36947564A US3250865A US 3250865 A US3250865 A US 3250865A US 369475 A US369475 A US 369475A US 36947564 A US36947564 A US 36947564A US 3250865 A US3250865 A US 3250865A
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contacts
contact
fixed
movable
center
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US369475A
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English (en)
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Bleibtreu Alexander
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Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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    • 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
    • H01H9/0027—Operating mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs

Definitions

  • TRANSFER SWITCH FOR TAPPED REGULATING TRANSFORMERS WITH RADIAL GUIDE AND LINKAGE STRUCTURE Filed May 22, 1964 4 Sheets-Sheet 5 W n/r04 Mum WW M Wm M A y 1966 A. B IBTREU 3,250,865
  • This invention is concerned with transfer switches for tapped regulating transformers, and more particularly with rotary Jansen type transfer switches.
  • An important feature of Jansen ty-pe transfer switches resides in the fact that the movable contacts thereof are under the control of snap-action operating mechanisms adapted to impart to their movable contacts high switching velocities, particularly high velocities of separation from the fixed contacts thereof.
  • the design of a transfer switch depends largely upon whether it is intended for single-phase application, or polyphase application.
  • Single phase designs of transfer switches are applied in single phase circuits, and also in polyphase circuits whenever it is necessary, or desirable, to use a separate transfer switch for each phase of the polyphase circuit.
  • Such a situation may exist in a three phase circuit including a transformer having tapped deltaconnected phase windings.
  • polyphase designs of transfer switches the movable contacts !and the fixed contacts of all phases are integrated into a structural unit.
  • Such polyphase designs of transfer switches are particularly applied in three phase circuits including a transformer having tapped Y-connected windings.
  • This invention is concerned with transfer switches intended for single phase applications, as explained above, i.e., transfer switches comprising movable switching contacts and operating linkages therefor limited to the duty of performing the switching operations pertaining to one single phase.
  • this invention is not concerned with a transfer switch of the type comprising movable switching contacts and operating linkages therefor adapted to perform the switching operations pertaining to several phases of a polyphase circuit, and wherein the contacts and linkages are integrated into one unitary switch structure.
  • Jansen type transfer switches are generally operated by motor means or, to be more specific, by loaded springs pre-storing the energy for performing the required'sequence of switching operations, or switching steps, to switch from one tap of a transformer winding to another. These loaded springs determine the intervals of time which occur between successive switching operations, or switching steps, as well as the speed at which cooperating contacts part from each other, and engage with each other.
  • the switching capacity or interrupting capacity of a transfer switch for tap-changing regulating transformers depends largely upon the choice of the speed of contact separation. Optimal values of switching capacity or interrupting capacity can only be achieved if it is possible to control the speed of contact separation independently from the interval of time elapsing between successive switching operations, or switching steps.
  • Still another object of the invention is to provide transfer switches for tapped regulating transformers having spring means determining the speed at which successive switching operations are being performed, i.e., determining the intervals of time elapsing between successive switching operations, and having additional spring means determining the speed at which cooperating contacts part and engage.
  • FIG. 1 is a diagrammatic illustration of the contact structure and the linkage structure of a transfer switch embodying this invention and of its association with a tapped transformer winding and with switch-over resistors, the selector switch normally being associated with such a transfer switch as shown in FIG. 1 having been omitted in FIG. 1;
  • FIG. 2 is a vertical section of a transfer switch of the kind diagrammatically illustrated in FIG. 1, this section being taken substantially along 2-2 of FIG. 3;
  • FIG. 3 is a section taken substantially along 33 of FIG. 2 showing some portions of the structure as being broken away to expose to view other portions thereof;
  • FIG. 4 is a diagrammatic illustration of the structure of FIGS. 2 and 3 including the loaded spring mechanism provided for its operation which is omitted in FIGS. 2 :and 3; and
  • FIGS. 5 to 7 are diagrammatic illustrations of the same contact structure and linkage structure as shown in FIG. 4. in three different operating positions thereof.
  • reference character T has been applied to indicate a transformer winding having two taps a and a and reference characters R and R have been applied to indicate a pair of switching impedances formed by :a pair of ohmic resistors.
  • the transfer switch comprises four pairs of movable contacts 27, 28, 29 and 30.
  • Movable contacts 27 are adapted to engage fixed contacts 23, 23' and to part simultaneously from fixed contacts 23, 23.
  • Movable contacts 28 cooperate in the same fashion with fixed contacts 24, 24'. The same applies in regard to movable contacts 29 and fixed contacts 25, 25' and in regard to movable contacts 30 and fixed contacts 26, 26.
  • terminal T is to be disconnected from tap u and to be connected to tap a the following switching operations must be carried out sequentially in the specific sequence which is indicated below:
  • the next step consists in engagement of contacts 38 and 26, 26', contacts 29 remaining in the closed position thereof and contacts 27 and 28 remaining in the open positions thereof.
  • the following current path is added to the aforementioned current path: tap a lead e, resistor R leaf 1, contact 26, contacts 30, contact 26, lead g, terminal T.
  • the turns of winding T situated between taps u and a are shunted by resistors R R in this position of the transfer switch, thus giving rise to circulating currents.
  • the next operating step consists in separation of contacts 29 from contacts 25, 25, contacts 30 remaining in the closed position thereof and contacts 27 and 28 remaining in the open positions thereof.
  • tap M1 is completely disconnected from terminal T and the shunt path for circulating currents including resistors R and R is interrupted.
  • the last step in the tap-changing switching operation of the transfer switch shown in FIG. 1 is closing of contacts 28, contacts 30 remaining in the closed position thereof and contacts 27 and 29 remaining in the open positions thereof.
  • the last referred-to switching step establishes the following direct current path between tap u and terminal T: tap bi lead h, contact 24, contacts 28, contact 24, lead g, terminal T.
  • a certain interval of time occurs between each consecutive step, and the timing of these consecutive steps is referred to as the speed at which the tap-changing operation is performed.
  • Each pair of movable contacts 27, 28, 29, 30 has a velocity at which its parts and at which it engages its pair of cooperating fixed contacts 23, 23; 24, 24; 25, 25 and 26, 26'.
  • This velocity is, of course, not constant along the travel or stroke of each pair of movable contacts 27, 28, 29, 30, but is zero in the two limit positions of contacts 27, 28, 29 and 30 and increases at the beginning of their travel or stroke and decreases at the end of their travel or stroke.
  • the switching capacity or interrupting capacity of the breaks formed between separating contacts depends critically upon the rate of the dielectric recovery at each break, and the rate of dielectric recovery at each break depends, in turn, upon the time-travel characteristic of each pair of parting contacts.
  • each pair of movable contacts 27, 28, 29, 30 is operated by a link 31.
  • the ends of links 31 remote from the pairs of contacts 27, 28, 29, 30 are pivotally supported on a vertical floating shaft 33.
  • Shaft 33 is under the action of a helical tension spring 36 whose radial- 1y outer end is attached to a pivot pin 38.
  • Pivot pin 38 is 4 lever 40.
  • the mechanism is designed to sequentially operate the four pairs of movable contacts 27, 28, 29, 30 in the manner set forth above. How this is achieved will be explained below more in detail in connection with FIGS. 4-7.
  • FIG. 1 It'will be apparent from a consideration of FIG. 1 that cooperating pairs of fixed and movable contacts such as, for instance, contacts 23, 23 and 27, are provided to establish double breaks at each point of break.
  • the structure shown in FIGS. 2 and 3 comprises also contacts forming double breaks at each point of break.
  • the structure shown in FIGS. 4 to 7, inclusive is a slightly simplified version of the structure shown in the other figures. It has been assumed in drawings FIGS. 4, to 7 that each pair of movable contacts 27, 28, 29, 38 of FIG. 1 is merged into one single contact and that each pair of fixed contacts is merged into one single contact, e.g., fixed contacts 23 and 23 are merged into one single contact. As a result, the double break feature of FIG. 1 is changed to single breaks, FIGS. 4 to 7, inclusive, showing the same contact structure as FIG. 1 upon having effected a contact merger as indicated above.
  • FIGS. 4 to 7 four movable contacts 27, 28, 29, 30 take the place of the corresponding pairs of movable contacts shown in FIG. 1 and four fixed contacts 23, 24, 25, 26 take the place of the corresponding pairs of fixed contacts shown in FIG. 1.
  • crank mechanism 1 may be operated either manually, or by appropriate motor means.
  • the radially outer end of crank mechanism 1 is provided with a pin 2 engaging an elongated slot 3 in a spring-operating lever 4.
  • Lever 4 is pivotally mounted at 6 and gear segment 5 is integral with lever 4.
  • Gear segments 5 is in meshing engagement with a pinion 7 loosely mounted on a vertical shaft 10.
  • Spring loading lever 8 is integral with pinion 7, thus transmitting any rotary motion of pinion 7 to the left end of spring 9.
  • the right end of spring 9 is attached to a lever 11 keyed to shaft 10, or otherwise secured to shaft 10 in such a way as to always move jointly with shaft 10.
  • the pivotal motions of lever 11 are limited by two abutments or dogs 12, 13, thus establishing two limit positions for lever 11.
  • Spring 9 is loaded'by operating crank mechanism 1.
  • the operation 'of parts 1, 4, 5, 7 and 8 resulted in moving spring 9 over center, and spring 9 is about to pull lever 11 from its upper limit position defined by abutment 12 to its lower limit position defined by abut ment 13.
  • the aforementioned lower limit position of lever 11 has been indicated by a dash-and-dot line to which reference character 11' has been applied.
  • a pivotal motion of lever 11 under the action of spring 9 results in a corresponding pivotal motion of shaft 10, shaft 10 being integral with lever 11.
  • a rotary motion of crank mechanism 1 of degrees results in a clockwise pivotal motion of lever 4 about fulcrum 6, and a clockwise rotary,
  • Reference numeral 15 has been applied to indicate .the lower end or an extension of pivotable shaft 10.
  • lever 48 The pivotal motions of the end or extension 15 of shaft 10 are transmitted by lever 48 to lever 40 pivotally supported at 42.
  • Lever 48 and lever 40 are pivotally joined together by pin and slot means 46 allowing the point at which link 48 and lever 40 are pivotally connected to move relative to lever 40 in a direction longitudinally thereof.
  • Helical tension spring 36 is interposed between the radially outer end 38 of lever 40 action mechanism shown in the upper portion of FIG.
  • each movable cont-act 27, 28, 29, 30 has a pair of contact surfaces cooperating with a pair of fixed contacts to establish double breaks upon parting from said pair of fixed contacts.
  • FIG. 2 but one of the four movable contact bridges is shown, but FIG. 3 clearly shows the four vertical contact bridges 27, 28, 29, 30.
  • FIG. 3 shows only the upper fixed contacts 23, 24, 25, 26 cooperating with each contact bridge 27, 28, 29, 30.
  • the lower fixed contacts 23, 24, 25, 26 indicated in FIG. 1 and present in the structure of FIGS. 2 and 3 do not appear in FIG. 3, and FIG. 2 shows only one of 15 is pivoted counterclockwise resulting in a movement of the parts of the transfer switch from the position shown in FIG. 7 to that shown in FIG. 5.
  • eachfixed contact of the structure of FIGS. 47 has been replaced by a pair of fixed contacts arranged along a vertical line.
  • the fixed contact 23 of the structure of FIGS 4-7 has been replaced by the pair of contacts 23, 23', as
  • FIG. 1 diagrammatically shown in FIG. 1.
  • the circuitry for the structure of FIGS. 2 and 3 is that of FIG. 1 wherein the four lower fixed contacts, i.e. contact 23'.
  • numeral 21 has been applied to indicate a substantially cylindrical insulating structure forming a housing for the contact structure of the transfer switch and supporting the fixed contacts 23, 23; 24, 24; 25, 25' and 26, 26' forming part thereof.
  • the driving shaft for operating the four movable cont-act bridges 27, 28, 29, 30 com prises two separate portions, i.e., an upper portion 10 and a lower portion or extension 15 axially spaced from the upper portion 10. Both portions 10, 15 are mechanically coupled for joint motion and electrically insulated from each other by an insulating sleeve 14.
  • lever 48 of FIGS. 2, 3 and 4 to 7 is substantially identical with lever 48 of FIG. 1, and that the structure of FIGS. 2 and 3 requires'the addition of another lever 49 performing the same function as lever 48.
  • This is due to the fact that the substitution of vertical contact bridges 27, 28, 29, 30 for single break contacts 27, 28, 29, 30 arranged in a common plane calls for contact operat ing means of increased mechanical strength, coextensive with a significant portion of the length of shaft 15.
  • levers 40 and 41 fulcrumed at 42 and 43 take the place of single lever 48 fulcrumed at 42
  • springs 36 and 37 take the place of single spring 36
  • contact operating links 31 and 32 take the place of the single contact operating links 31 for each movable contact.
  • levers 48, 49 are provided formed in levers 40, 41.
  • Pivots 38, 39 at the radially outer ends of levers 40, 41 form supports for the axially outer ends of springs 36 and 37, respectively.
  • the axially inner ends of springs 36, 37 are attached to spring supports 34, 35 mounted respectively upon the upper end and upon the lower end of vertical floating shaft 33.
  • Vertical floating shaft 33 pivotally supports the axially inner ends of pairs of contact operating links 31, 32 of which but the upper operating links 31 are shown in FIG. 3.
  • the structure of FIGS. 2 and 3 comprises four pairs of contact operating links 31, 32. In FIG. 2 the axially inner ends of all contact operating links 31, 32 have been shown, but the axially outer ends of six of the contact operating links 31, 32 are broken away.
  • FIG. 2 shows fully but the pair of contact operating links for contact bridge 27 which are pivotally connected to the latter.
  • FIGS. 2 and 3 further comprises four transverse horizontal partitions 53, 54 and 44, 45 arranged inside of cylindrical insulating housing 2 1.
  • Partitions 44 and 45 support or form a pair of bearings in which shaft 15 is journalled.
  • Partitions 44 and 45 support also a pair of additional bearings forming fulcra for pivots 42 and 43 on levers 40 and 41.
  • Partitions 53 and 54 form radial slots 51 and 52 for radially guiding the four contact bridges 27, 28, 29, 30.
  • shaft 10 of the structure of FIGS. 2 and 3 is intended to be driven by a loaded spring mechanism such as that shown above in FIG. 4 and de scribed in connection therewith.
  • FIGS. 2 and 3 The mode of operation of the above described structure, i.e. that shown in FIGS. 2 and 3 is substantially the same as that described in connection with FIGS. 4 to 7, inelusive, except thatthe structure of FIGS. 2 and 3 establishes double breaks at each point where the structure of FIGS. 4 to 7, inclusive, establishes single breaks.
  • floating shaft is used in this context with reference to shaft 33 implies that the shaft is free to move in any direction under the action of a resulting force acting upon it, as distinguished from a shaft that is restrained from moving in any direction by suchmeans as, for instance, a groove, or the like guide means, limiting the free mobility of the shaft.
  • a snap action contact operation occurs any time the radially outer end of over-center spring 36 or pivot pin 38, respectively, is moved transversely across one of the above referred-to straight angularly displaced lines, or across one of the links 3d, respectively. It will be apparent from FIGS. 5 to 7 that the radially outer end of over-center spring 36 does not move transversely across all of the above-referred-to straight angularly displaced straight lines, or across all of links 31. The radially outer end of spring 36 or pin 38, respectively, is moved transversely across the links 31 pivotally supporting movable contacts 29 and 30, but not across the links 31 pivotally supporting movable contacts 23 and 28.
  • a transfer switch for tapped regulating transformers comprising in combination:
  • contact-operating means including an over-center
  • a floating shaft supporting the ends of said plurality of links remote from said plurality of movable contacts and further supporting one end of said overcenter spring, said floating shaft being free to move in any direction under the action of said over-center spring and not subject to any driving forces other than driving forces exerted by said over-center spring;
  • contact-operating means pivotally. connected to the ends of said pluralityof lin ks remote from said plurality of movable contacts for selectively moving each of said plurality of movable contacts radially inward and radially outward, said contact-operating means including a common floating support for said ends of said plurality of links remote from said plurality of movable contacts, lever means pivotally mounted in said center of said fixed contacts, and spring means interposed between said common floating support and the radially outer end of said lever means; and
  • a transfer switch for tapped regualting transformers comprising in combination: I
  • a source of motive power including a loaded spring for pivoting said drive shaft in clockwise direction and in counterclockwise direction between two limit positions thereof;
  • a transfer switch for tapped regulating transformers comprising in combination:
  • first means substantially determining the speed of engagement and disengagement of said plurality of fixed contact means and of said plurality of movable contact means, said first means including a plurality of links each having one end pivotally connected to one of said plurality of movable contact means, a floating shaft pivotally supporting the ends of said plurality of links remote from said plurality of movable contact means, over-center spring means supported with one end thereof by said floating shaft, and a spring support for the other end of said overcenter spring means pivotally supported at said center of said circular pattern of fixed contact means; and 1 (d) additional means substantially determining the speed of sequential operation of said plurality of movable contact means including a drive shaft arranged parallel to said floating shaft, loaded spring means for pivoting said drive shaft in clockwise and counterclockwise direction between tWo limit positions thereof, and transmission means for transmitting the pivotal motion of said drive shaft to said spring support to pivot said spring support along an angle sufficiently wide to effect snap-action operation of a plurality of movable contacts in a predetermined sequence.
  • a transfer switch for tapped regulating transformers comprising in combination:
  • contact-operating means pivotally connected to the ends of said plurality of linkages remote from said plurality of movable contacts for selectively mov ing each of said plurality of movable contacts radially inward and radially outward, said contact-operating means including a common floating shaft supporting the ends of said plurality of linkages remote from said plurality of movable contacts, lever means pivotally mounted in said center of said fixed contacts and tension spring means connecting said common floating shaft and the radially outer end of said lever means; and v (f) means for pivoting said lever means selectively in clockwise direction and in counterclockwise direction along an angle sutficiently wide to effect snap-action operation of said plurality of movable contacts in a predetermined sequence, said lever pivoting means including an over-center spring motor separate and spaced from said spring means.
  • a transfer switch for tapped regulating transformers comprising in combination:
  • transverse partition means inside, of said contact support having radial slots defining ways for guiding said plurality of movable contact means
  • lever means pivotally mounted in coaxial relation to the longitudinal axis of said contact support;
  • tension over-center spring means interconnecting said common floating shaft and said lever means;
  • a transfer switch for tapped regulating transformers comprising in combination:
  • transverse partition means inside of said contact support having radial slot-s defining ways for guiding said plurality of movable contact means
  • lever means pivotally mounted in coaxial relation to the longitudinal axis of said contact support;
  • over-center tension spring means interconnecting said floating shaft and said lever means;
  • a transfer switch for tapped regulating transformers comprising in combination:
  • transverse partition means inside of said contact support having radial slots defining ways for guiding said plurality of movable contact means
  • a snap-action spring motor adapted to pivot said sec- :ond shaft in clockwise direction and in counterclockwise direction to cause sequential snap-action operation of said plurality of movable contacts by the intermediary of said over-center tension spring means.
  • a transfer switch for tapped regulating transformers comprising in combination: 7
  • a first contact operating spring having performance characteristics substantially determining the speed of the sequence of operation of said plurality of Contact bridges, said first contact operating spring being arranged adjacent one end of said driving shaft and adapted to pivot said driving shaft in clockwise direction and in counterclockwise direction between two limit positions thereof;
  • a transfer switch for tapped regulating transformers comprising in combination:
  • a transfer switch for tapped regulating transformer comprising in combination.
  • a transfer switch for tapped regulating transform ers comprising in combination:
  • a transfer switch for tapped regulating transformers comprising in combination:

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US369475A 1963-07-18 1964-05-22 Transfer switch for tapped regulating transformers with radial guide and linkage structure Expired - Lifetime US3250865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM57543A DE1273677B (de) 1963-07-18 1963-07-18 Lastumschalter fuer Stufenschalter von Regeltransformatoren

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US3250865A true US3250865A (en) 1966-05-10

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US369475A Expired - Lifetime US3250865A (en) 1963-07-18 1964-05-22 Transfer switch for tapped regulating transformers with radial guide and linkage structure

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US (1) US3250865A (hr)
AT (1) AT242813B (hr)
BE (1) BE650757A (hr)
CH (1) CH413097A (hr)
DE (1) DE1273677B (hr)
GB (1) GB1029336A (hr)
NL (2) NL6407434A (hr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3315043A (en) * 1965-07-13 1967-04-18 Reinhausen Maschf Scheubeck Transfer switch for tap changing regulating transformers including a contact support for the fixed contacts having no creepage path
US3400231A (en) * 1965-02-23 1968-09-03 Reinhausen Maschf Scheubeck Transfer switch for tap-changing transformers having contacts movable along orthogonal diameters of a circle
US3406394A (en) * 1966-07-18 1968-10-15 Control Data Corp Synchronized communications sytem
US3441700A (en) * 1967-09-20 1969-04-29 Automatic Switch Co Multipole mechanically held relay
US3462563A (en) * 1968-01-08 1969-08-19 Superior Electric Co Tap changing mechanism with scotch yoke actuator
US3632908A (en) * 1969-06-18 1972-01-04 Reinhausen Maschf Scheubeck Regulating transformer tap-changer switch
US3671687A (en) * 1969-12-16 1972-06-20 Reinhausen Maschf Scheubeck Transfer switch for tap-changing regulating transformers including lost motion interconnection driving mechanism
WO1997018572A1 (en) * 1995-11-13 1997-05-22 Abb Power T & D Company Inc. Diverter switch and link system for load tap changer
US11120962B2 (en) * 2015-08-28 2021-09-14 Maschinenfabrik Reinhausen Gmbh Load transfer switch for an on-load tap changer and continuous main switch and disconnecting switch for same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1638484C2 (de) * 1968-01-17 1975-11-20 Maschinenfabrik Reinhausen Gebrueder Scheubeck Kg, 8400 Regensburg Stufenschalter fur Regeltransformatoren
DE4016428C1 (hr) * 1990-05-22 1991-11-07 Maschinenfabrik Reinhausen Gmbh, 8400 Regensburg, De

Citations (2)

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US2177109A (en) * 1935-04-29 1939-10-24 Allis Chalmers Mfg Co Voltage regulator
US2833873A (en) * 1956-01-07 1958-05-06 Jansen Bernhard Multi-pole tap switch construction for changing transformer taps under load

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Publication number Priority date Publication date Assignee Title
DE660944C (de) * 1932-02-14 1938-06-07 Siemens Schuckertwerke Akt Ges Schalteinrichtung fuer Transformatorwicklungen
DE915590C (de) * 1943-05-14 1954-07-26 Bernhard Jansen Dr Ing Stufenwaehler fuer Anzapftransformatoren
BE497346A (hr) * 1949-08-09
DE908640C (de) * 1949-12-24 1954-04-08 Bernhard Jansen Dr Ing Lastumschalter fuer Stufentransformatoren
DE857519C (de) * 1950-01-17 1956-06-28 Bernhard Dr-Ing Jansen Federkraftspeicher zum Schnellantrieb eines Lastumschalters
DE955340C (de) * 1953-05-14 1957-01-03 Licentia Gmbh Lastumschalter fuer unter Last regelbare Transformatoren und Drosselspulen
AT192006B (de) * 1954-12-15 1957-09-25 Elin Ag Elek Ind Wien Lastumschalter mit unterteilten Schaltstücken
AT196974B (de) * 1956-01-07 1958-04-10 Bernhard Dr Ing Jansen Lastumschalter für Stufentransformatoren
AT226838B (de) * 1960-09-07 1963-04-10 Bbc Brown Boveri & Cie Stufenschalter für die Betätigung von vier Lastumschaltkontakten bei Reguliertransformatoren

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2177109A (en) * 1935-04-29 1939-10-24 Allis Chalmers Mfg Co Voltage regulator
US2833873A (en) * 1956-01-07 1958-05-06 Jansen Bernhard Multi-pole tap switch construction for changing transformer taps under load

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400231A (en) * 1965-02-23 1968-09-03 Reinhausen Maschf Scheubeck Transfer switch for tap-changing transformers having contacts movable along orthogonal diameters of a circle
US3315043A (en) * 1965-07-13 1967-04-18 Reinhausen Maschf Scheubeck Transfer switch for tap changing regulating transformers including a contact support for the fixed contacts having no creepage path
US3406394A (en) * 1966-07-18 1968-10-15 Control Data Corp Synchronized communications sytem
US3441700A (en) * 1967-09-20 1969-04-29 Automatic Switch Co Multipole mechanically held relay
US3462563A (en) * 1968-01-08 1969-08-19 Superior Electric Co Tap changing mechanism with scotch yoke actuator
US3632908A (en) * 1969-06-18 1972-01-04 Reinhausen Maschf Scheubeck Regulating transformer tap-changer switch
US3671687A (en) * 1969-12-16 1972-06-20 Reinhausen Maschf Scheubeck Transfer switch for tap-changing regulating transformers including lost motion interconnection driving mechanism
WO1997018572A1 (en) * 1995-11-13 1997-05-22 Abb Power T & D Company Inc. Diverter switch and link system for load tap changer
US5693922A (en) * 1995-11-13 1997-12-02 Abb Power T&D Company Inc. Diverter switch and link system for load tap changer
CN1068958C (zh) * 1995-11-13 2001-07-25 Abbt＆D动力有限公司 转换开关及负载抽头转换开关联动系统
US11120962B2 (en) * 2015-08-28 2021-09-14 Maschinenfabrik Reinhausen Gmbh Load transfer switch for an on-load tap changer and continuous main switch and disconnecting switch for same

Also Published As

Publication number Publication date
AT242813B (de) 1965-10-11
NL6407434A (hr) 1965-01-19
CH413097A (de) 1966-05-15
BE650757A (hr) 1964-11-16
GB1029336A (en) 1966-05-11
DE1273677B (de) 1968-07-25
NL126088C (hr)

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