US3174097A - Transfer switch for tap changers for regulating transformers - Google Patents

Transfer switch for tap changers for regulating transformers Download PDF

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Publication number
US3174097A
US3174097A US255291A US25529163A US3174097A US 3174097 A US3174097 A US 3174097A US 255291 A US255291 A US 255291A US 25529163 A US25529163 A US 25529163A US 3174097 A US3174097 A US 3174097A
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Prior art keywords
contact
contacts
fixed
pairs
tap
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Expired - Lifetime
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US255291A
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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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Priority claimed from DEM51739A external-priority patent/DE1230903B/de
Application filed by Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
Priority to US359806A priority Critical patent/US3238320A/en
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Publication of US3174097A publication Critical patent/US3174097A/en
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    • 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
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/44—Contacts characterised by the manner in which co-operating contacts engage by sliding with resilient mounting
    • 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

Definitions

  • This invention is concerned with transfer switches for tap-changing regulating transformers.
  • Another object of this invention is to provide improved transfer switches for so-called Jansen type tap-changing regulating transformers.
  • Transfer switches according to the present invention may be constructed either for single phase service or for polyphase service.
  • Tap-changing regulating transformers include selector switches and transfer switches.
  • the selector switches serve the purpose of selecting a particular tap on a tapped transformer winding intended to be connected into an electric circuit.
  • Selector switches are not required to interrupt, or close, on current carrying circuits. This task is performed by the transfer switches. The latter perform all switching operations under load. Therefore all arcing is kept away from the selector switches and occurs only at the transfer switches. It is, therefore, of considerable importance that the transfer switches be designed to effectively cope with power arcs resulting from load switching operations and overload switching operations.
  • FIG. 1 shows a prior art transfer switch known as the Pennant transfer switch and the voltage vector diagram pertaining to that kind of transfer switch;
  • FIG. 2 shows the prior art transfer switch known as the Flag transfer switch and the voltage vector diagram pertaining to that kind of transfer switch;
  • FIG. 3 shows the prior art transfer switch known as Flag-Pennant transfer switch and the voltage vector diagram pertaining to that kind of transfer switch;
  • FIGS. 4-7, inclusive, show diagrammatically a transfer switch embodying the present invention in various successive operating positions thereof;
  • FIG. 8 is mainly a vertical section through a transfer switch embodying the present invention, some parts thereof being shown in front elevation rather than in vertical section;
  • FIG. 9 is a horizontal section through the structure of FIG. 8 showing the main contacts and the auxiliary contacts thereof in top-plan view;
  • FIG. 10 shows a detail of FIG. 8 on a substantially larger scale
  • FIG. 11 is a section along 11-1l of FIG. 10.
  • FIG. 12. is a horizontal section through the structure of FIG. 8 taken at a lower level than the section shown in FIG. 9.
  • FIGS. 1-3 show a portion T of a tapped transformer winding.
  • the P-transfer-switch comprises four movable contacts 1, 2, 3, 4.
  • a cylindrical contact support 6a of insulating material supports four fixed contacts adapted to be cooperatively engaged by the aforementioned movable contacts 1, 2, 3, 4.
  • the taps U U of the tapped portion of winding T are directly connected by appropriate leads to the outer or fixed main contacts of the P- ransfer-switch.
  • the taps U U are further connected by the intermediary of ohmic resistors R to the inner or fixed auxiliary contacts of the P-transfer-switch.
  • the movable contacts land 3, on the one hand, and the movable contacts 2 and 4, on the other hand, form part of separate or different contact operating systems.
  • tap U is directly connected to the load, the flow of the load current being indicated by a small arrow.
  • Changing the connection of the load from tap U, to tap U involves a closing operation of movable auxiliary contact 3 preceding the separation of the left movable main contact 1 from its cooperating fixed main contact. Since the fixed auxiliary contact cooperating with the movable auxiliary contact 3 is connected to tap U by the intermediary of right resistor R, the closing operation of contact 3 gives rise to a circulating current. This circulating current is superimposed upon the load current.
  • FIG. 1 shows but one of many possible embodiments resides in the fact that prior to interrupting a load circuit including a given tap, another pre-selected tap is being connected into the load circuit by the intermediary of an ohmic resistor.
  • the difference in potential between taps U and U gives rise to a circulating current and it is the algebraic sum of this circulating current and of the load current which must be interrupted by the P-transfer-switch. This is a relatively onerous interrupting duty.
  • operation of a P-transfer-switch has little efiect upon the system voltage.
  • the F-transfer-switch shown in FIG. 2 differs from the P-transfer-switch shown in FIG. 1 in regard to the se quence of switching operations.
  • the movable contact 1 parts from its cooperating fixed contact subsequent to engagement by movable contact 2 of its cooperating fixed contact which is connected by the intermediary of left ohmic resistor R with tap U of transformer winding T Hence no circulating current is established incident to engagement between the movable contact 2 and its cooperating fixed contact.
  • the gist of an F-transfer-switch is seen in that in such a transfer switch a contact is closed to connect a resistance into the circuit extending from the active tap to the load before another contact is closed establishing a current path from a preselected tap (the one to which a direct connection is to be made) to the load. Since an F-transfer-switch does not give rise to the flow of circulating currents, only the load current is interrupted when movable contact 1 parts from its cooperating fixed contact. While the interrupting duty or switching duty of an F-transfer-switch is relatively easy, its reaction on the system voltage is relatively significant.
  • FIG. 3 illustrating a FP-transferswitch
  • the fixed contacts thereof are arranged on a cylindrical contact support 6a and the movable contacts 1, 2 5, 6 are operated by two separate lever systems.
  • One of these lever systems includes contacts 1, 3 and 5 and the other of these lever systems includes contacts 2, 4 and 6.
  • the tap U is directly connected to the fixed contact cooperating with movable contact 1.
  • reference characters Uw and UWg have been applied to indicate the vectors of the voltages across the resistors which are inserted into the circuit during a tap changing operation and the reference character U has been applied to indicate the vector of the voltage between the two taps U and U
  • the angular relation of the above vectors depends upon the phase angle prevailing in the particular circuit under consideration. However this phase angle may be, the vector diagram of the voltages involved is generally in the shape of a pennant, the vector U forming the pole thereof.
  • Pennant transfer switch or P-transfer-switch which was coined for the transfer switch structure shown in FIG. 1 and described in connection with that figure.
  • Prior art P-transfer-switches as well as prior art F-transfer-switches and prior art FP-transfer-switches are capable of safely switching currents in the order of the rated current carrying capacity, and have a life commensurate to that of the regulating transformer with which they are associated.
  • transformer switches are not capable of switching effectively overload currents of, say 2 to 3 times the rated current. Switching of currents of such magnitude is conducive to excessive arcing tending to cause short-circuits between immediately adjacent transformer taps with resulting danger to the transfer switch as well as to the regulating transformer itself.
  • the novel transfer switch diagrammatically shown in FIGS. 4-7 removes the aforementioned limitations of prior art transfer switches.
  • the transfer switch shown in FIGS. 4-7 comprises six movable contact bridges 1', 2, 3, 4', 5, 6'. These contact bridges may be arranged on cylindrical segments. Contact bridges 1', Z 5', d are adapted to cooperate with a system of upper fixed contacts 31 and with a system of lower fixed contacts 30.
  • the transfer switch is associated with a tapped transformer winding of which but one section situated between two taps U and U has been shown. Tap U is directly connnected by a lead to fixed contact 3t? cooperating with contact bridge 1'. Tap U is further connected by the intermediary ohmic resistors R and R to the fixed contacts 36 cooperating with contact bridge 2' and 3', respectively. Tap U is directly connected by a lead to fixed contact 3t!
  • Tap U is further connected by the intermediary of ohmic resistors R and R to the fixed contacts 30 cooperating with contact bridge 4' and 5, respectively.
  • the fixed contacts 31 cooperating with contact bridges 2', 3', 4 and 5 are conductively interconnected by lead 2100.
  • lead tilt? is conductively connected to the neutral point of the Y-connected transformer. This has been indicated by placing an inverted Y adjacent to lead 100.
  • the fixed contact 31 cooperating with contact bridge 1 is conductively connected to the fixed contact 30 cooperating with contact bridge 2' by lead 101.
  • the fixed contact 31 cooperating with contact bridge 6' is conductively connected to the fixed contact 3% cooperating with contact bridge 5' by a lead 101.
  • tap U In the position of the parts shown in FIG. 4 tap U is active and tap U is inactive.
  • An electric circuit is established which includes tap U fixed contact 30 cooperating with contact bridge 1, contact bridge 1, fixed contact 31 cooperating with contact bridge 1', lead 101, fixed contact cooperating with contact bridge 2', contact bridge 2, fixed contact 31 cooperating with contact bridge 2', lead 100, neutral point.
  • the first tap-changing step which is shown in FIG. 5 consists in engagement of fixed contacts 31, 30 by their cooperating contact bridge 3' and in separation of contact bridge 1' from its fixed cooperating contacts 31, 3%. Separation of contact bridge 1 from its fixed cooperating contacts 31, 3% results in the formation of two series breaks in the circuit. These series breaks are shunted by ohmic resistor R resulting in instability of the two arcs formed at the two points of break.
  • the second tap-changing step which is shown in FIG. 6 consists in engagement .of the fixed contacts 31, 3d cooperating with contact bridge 4' by the latter.
  • the contact operating mechanism may be designed in such a way that sufficient time elapses to allow extinction of the arcs formed at the two aforementioned breaks at contact bridge ll before contact bridge 4' engages its cooperating fixed contacts 31, 39. This calls for are extinction at the first natural current zero and can readily be achieved if the current is not in excess of the rated load current of the transfer switch.
  • the third tap-changing step which is shown in FIG. 7 consists in engagement of the fixed contacts 31, 30 cooperating with the movable contact bridge 5 by the latter and in separation of the movable contact bridge 3' from its fixed cooperating contacts 31, 30. Separation of contact bridge 3 from its fixed cooperating contacts 31, 36 results in interruption of the current path of the circulating current.
  • the main current path established by the third tap-changing step includes tap U resistors R and R in parallel, contact bridges 5 and 4' in parallel, lead lift), and the neutral point of the Y-connected system.
  • the fourth and final tap-changing step consists in parting of contact bridge 4 from its cooperating fixed contacts 31, 3t and engagement by contact bridge 6 of its cooperating fixed contacts 31, 39. This establishes a direct current path including tap U contact bridge 6', lead 1% and the neutral point of the Y-connected system.
  • Some of the tap-changing steps referred-to above include two switching operations. There is a total of six switching operations as follows: contact bridge 3 closes; contact bridge 1' opens; contact bridge 4 closes; contact bridge 2 opens; contact bridge 6 closes; contact bridge 4- opens.
  • the design of the transfer switch of FIGS. 4-7 may be carried out in such a way that the length of the two breaks formed between contact bridge 1 and its cooperating fixed contacts 31, 3 exceeds the length of the two breaks formed by contact bridge 2' and its cooperating contacts 31, 30. Under such circumstances, in case of a restrike, or re-ignition, the dielectric breakdown of the two breaks formed by contact bridge 2' will precede the dielectric breakdown of the two breaks formed by contact bridge 1'. In case of a dielectric breakdown of the two breaks formed by contact bridge 2, two parallel current paths are established of which one comprises resistor R and contact bridge 2, and the other comprises resistor R and contact bridge 3.
  • transfer switches of the kind illustrated in FIGS. 4-7 increase their interrupting or switching capacity automatically if arcing persists on the two first-formed breaks on account of the presence of a current in excess of the med load current of the transfer switch.
  • transfer switches embodying the present invention operate as FP-transfer-switches as long as the current to be switched is in the order of the rated load current, and that they operate as P-transfer-switches having four serially related breaks if the current to be switched substantially exceeds the rated load current.
  • the upper end and the lower end of rod 16 is loosely guided by the upper end plate 12" and the lower end plate 13'', respectively.
  • the upper end of rod 16 is mechanically connected to the upper end plate 12" by means of a helical tension spring 14".
  • the lower end of rod 16" is mechanically connected to the lower end plate 13 by means of a helical tension spring
  • Reference numeral 17" has been applied to indicate a plurality of upper contact operating arms and reference numeral 13 has been applied to indicate a plurality of lower contact operating arms.
  • Each contact operating arm 17', 18 has a radially inner bearing and a radially outer bearing.
  • Rod 16" extends through the radially inner bearings of contact operating arms l7", 18'.
  • each of the contact bridges 20" is firmly yet resiliently held in position in its respective contact carrier 19".
  • Each of the aforementioned insulating plates 23 engages a concave recess 29" in one of the contact carriers l9 and each of the contact bridges 29" has a convex projection on its back engaging recess 29 in one of the contact carriers 19 and one of the insulating plates 28, respectively.
  • Grooves 24" and are provided with insulating inserts 24a and 25a for insulating contact bridges 20" from the contact carriers 19" at the upper and lower points where the former are inserted into the latter.
  • the upper end of each contact bridge Ed and the lower end of each contact bridge 20" is adapted to cooperate with a pair of fixed contacts 31 and 30.
  • Contacts 30 and 31 are supported by the wall of the switch housing 2 and include terminal elements which are arranged on the radially outer surface of the switch housing 2". Pairs of fixed contacts 31, 38 are arranged in vertically extending channel members 32 insulating contiguous pairs of contacts 31, 3t) from each other. Because of the provision of channel-shaped insulating barriers 32 the angular spacing of pairs of contacts 31, 3th may be small, and yet fiashovers between pairs of contacts 31, 3.0 which are at different potentials are effectively precluded by the presence of channel-shaped barriers 32".
  • FIGS. 4-7 calls for the provision of six contact carriers is" and of six contact bridges 2i?" and of six pairs of contacts 3t, 3% per phase. in other applications the number of contact carriers, contact bridges and of pairs of fixed contacts per phase may be smaller than six or larger than six.
  • the fixed contacts 31, 3d of each phase and the contact bridges of each phase are arranged in form of a sector of a circle.
  • the fixed contacts 32., at the ends of each such sector are main arcing contacts and the fixed contacts of each such sector arranged between main contacts are auxiliary arcing contacts to be connected to the switchinng resistors R R arranged in the lower portion of switch housing 2".
  • FIG. 9 shows all the arcing contacts pertaining to one phase, omitting the arcing contacts of the other phases.
  • the linkages operating the movable arcing contacts not shown have been indicated in FIG. 9 by d-ash-and-dot lines.
  • FIG. 12 fully illustrates the arrangement of the aforementioned main current carrying contacts.
  • the fixed main current carrying cont-acts are also shown in FIG. 9.
  • Reference numeral 33" has been applied to indicate six movable main current carrying contacts. These contacts 33 are arranged remotely from the main and auxiliary switching or arcing contacts 31, 39 and at a lower level than the latter.
  • the movable main current carrying contacts 33" form current-carrying bridges conductively interconnecting conductor bars 9 and angular main current carrying contacts 34''.
  • the transfer switch comprises six fixed main current carrying contacts 34", a pair of such contacts for each phase of a three phase circuit.
  • the phase groups of the movable main current carrying contacts and the fixed main current carrying contacts are angularly displaced degrees.
  • FIG. 12 shows three movable main current carrying contacts 34 in the closed position thereof and three such contacts in the open position thereof.
  • the fixed main current carrying contacts 34 are secured to the inner surface of cylindrical switch housing 2". Each fixed main current carrying contact 34 is conductively connected to a pair of terminals 5".
  • PEG. 12 shows to the right two movable main current carrying contacts 33" of which one is in the closed posit-ion and the other in the open position thereof. The closed contact 33" of FIG.
  • each movable main current carrying contact 33 is pivotally attached at 33a" to an operating lever 35".
  • the operating levers 35" are pivot-ally secured at 35a to lower end plate 13'.
  • Each pair of movable current carrying contacts 33" associated with one phase of a polyphase circuit is under the control of a lever 36 having a pair of pivotable operating arms.
  • the current path of the structure of FIGS. 8-12 is the same as explained in detail in connection with FIGS. 4-7.
  • the current path begins at terminals extends through resistors R R R R includes lower arcing contacts 30, contact bridges 20" and upper arcing contacts 31".
  • Contacts 31" are conductively connected to a conductive strap L arranged on the outside of housing 2 by conductors projecting through housing 2".
  • Strap L is connected to flange element 6 which is the structural equivalent of lead lltltl of FIGS. 47 and terminals 4- are applied to connect flange element 6" to the neutral point of the system.
  • FIGS. 8l2 The sequence of operating steps of contact bridges 20" of the structure of FIGS. 8l2 is the same as the sequence of operating steps of the contact bridges 1', 2' 5', 6 of FIGS. 4-9 described in connection with these figures.
  • the kinematic theory underlying the structure of FIGS. 8-12 is set forth in detail in United States Patent 2,680,796 to Bernhard Jansen, June 8, 1954, for Load Changeover Switch for Tapped Transformers Using a Combination of Contact Movements see particularly FIG. 5 and column 6, line 55 to column 7, line 23) and reference may be had to that patent for additional information regarding this subject.
  • transfer switches embodying the present invention dispense entirely with flexible connections or braids for energizing the movable contact segments including contact bridges 20".
  • contact bridges 20 are insulated from their supports l all the movable parts within the transfer switch may be made of metal rather than of insulating material, which greatly contributes to the ruggedness of transfer switches embodying the present invention.
  • the ruggedness of such transfer switches is due in particular to the presence of the squirrel-cage type structure comprising guide plates 7", and the three conductive bars 9".
  • the entire transfer switch is supported as a self-sustained structural unit at a single point, namely at the flange element 6".
  • the transfer switch structure proper may be withdrawn from housing 2" in downward direction upon loosening the supporting screws 10''.
  • a transfer switch for tap-changing regulating transformers comprising in combination:
  • a plurality of contact bridges each adapted to engage with and to part from, one of said plurality of pairs of fixed contacts, said plurality of contact bridges including two main contact bridges each adapted to engage with, and to part from, one of said two pairs of fixed main contacts, and said plurality of contact bridges further including auxiliary contact bridges each adapted to engage with, and to part from, one of said pairs of auxiliary fixed contacts;
  • each of said pair of terminals being conductively connected to one of each said two pairs of fixed main contacts;
  • a transfer switch for tap-changing regulating transformers comprising in combination:
  • a first line of spaced fixed contacts including a pair of fixed main contacts each arranged at the end of said first line and auxiliary fixed contacts ar ranged between said pair of main fixed contacts;
  • a plurality of contact bridges each adapted to engage with, and to part from, one of said fixed contacts in said first line and one of said fixed contacts in said second line, said plurality of contact bridges including a pair of main contact bridges each adapted to cooperate with one of said pair of main contacts in said first line and one of said pair of main contacts in said second line, and said plurality of contact bridges further including aux iliary contact bridges each adapted to cooperate with one of said auxiliary contacts in said first line and one of said auxiliary contacts in said second line;
  • a first group of fixed contacts including six contacts arranged adjacent one end of said six contact bridges and each adapted to be engaged by, and to be disengaged from, one of said six contact bridges, said first group including a pair of outer main contacts and four inner auxiliary contacts;
  • a transfer switch for tap-changing regulating transformers comprising in combination:
  • a plurality of contact bridges each adapted to engage with, and to part from, one of said plurality of pairs of fixed contacts, said plurality of contact bridges including two main contact bridges each adapted to engage with, and to part from, one of said two pairs of fixed main contacts, and said plurality of contact bridges further including auxiliary contact bridges each adapted to engage with, and to part from, one of said pairs of fixed auxiliary contacts;
  • a transfer switch for tap-changing regulating transformers comprising in combination:
  • a plurality of contact bridges each adapted to engage with, and part from, one of said plurality of pairs of fixed contacts, said plurality contact bridges including two main contact bridges each adapted to engage with, and to part from, one of said two pairs of fixed main contacts, and said plurality of contact bridges further including auxiliary contact bridges each adapted to engage with, and to part from, one of said pairs of auxiliary fixed contacts;

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Housings And Mounting Of Transformers (AREA)
US255291A 1962-02-08 1963-01-31 Transfer switch for tap changers for regulating transformers Expired - Lifetime US3174097A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US359806A US3238320A (en) 1962-02-08 1964-02-26 Transfer switch for tap changers for regulating transformers including a cylindrical insulating housing, a squirrel-cage contact-supporting structure and contact bridgesinsulatingly supported by contact bridge carriers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEM51739A DE1230903B (de) 1962-02-08 1962-02-08 Lastumschalter fuer Stufenschalter von Regeltransformatoren
DEM52886A DE1239394B (de) 1962-02-08 1962-05-17 Schaltanordnung fuer Lastumschalter von Stufenschaltern bei Regeltransformatoren

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US3174097A true US3174097A (en) 1965-03-16

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US (1) US3174097A (xx)
BE (2) BE632521A (xx)
CH (1) CH400346A (xx)
DE (1) DE1239394B (xx)
GB (1) GB994329A (xx)
NL (3) NL292688A (xx)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254296A (en) * 1962-05-25 1966-05-31 Reinhausen Maschf Scheubeck Transfer switch for tap changers for regulating transformers
US3632908A (en) * 1969-06-18 1972-01-04 Reinhausen Maschf Scheubeck Regulating transformer tap-changer switch
US3805087A (en) * 1972-06-20 1974-04-16 Reinhausen Maschf Scheubeck Tap-changing transfer switch having series breaks and means for controlling the recovery voltage between breaks
US3806735A (en) * 1972-06-20 1974-04-23 Reinhausen Maschf Scheubeck Tap changing transfer switch having series breaks
US3934174A (en) * 1973-11-16 1976-01-20 Maschinenfabrik Reinhausen Gebruder Scheubeck K.G. Surge voltage protection for transfer switches for load-tap changers
US4112274A (en) * 1976-02-04 1978-09-05 General Power Corp. Electrical control
FR2462773A1 (fr) * 1979-07-31 1981-02-13 Reinhausen Kg Maschf Commutateur d'echelons pour transformateur a echelons avec un support pour des resistances de polarisation
EP0252400A2 (de) * 1986-07-05 1988-01-13 Maschinenfabrik Reinhausen Gmbh Mit Vorwähler versehener Lastwähler für Stufentransformatoren
WO1997023888A1 (de) * 1995-12-21 1997-07-03 Maschinenfabrik Reinhausen Gmbh Lastumschalter für einen stufenschalter
US20130306449A1 (en) * 2012-05-17 2013-11-21 Shanghai Huaming Power Equipment Co., Ltd Change-over structure between moving contact and static contact of tap selector
CN104465140A (zh) * 2014-12-29 2015-03-25 刁俊起 一种永磁驱动有载调压开关
WO2017036496A1 (de) * 2015-08-28 2017-03-09 Maschinenfabrik Reinhausen Gmbh Lastumschalter für einen laststufenschalter und dauerhauptschalter und trennschalter hierfür
CN114373645A (zh) * 2021-12-30 2022-04-19 雷顿电气科技有限公司 自动转换开关的传动装置

Citations (7)

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Publication number Priority date Publication date Assignee Title
US2680790A (en) * 1951-03-07 1954-06-08 Jansen Bernhard Load changeover switch for tapped transformers using a combination of contact movements
US2833873A (en) * 1956-01-07 1958-05-06 Jansen Bernhard Multi-pole tap switch construction for changing transformer taps under load
US3005881A (en) * 1960-11-28 1961-10-24 Orval T Ellsworth Rotary electric switch
US3014999A (en) * 1957-10-24 1961-12-26 Acec Multi-contact electrical switches
US3045173A (en) * 1959-05-01 1962-07-17 Mc Graw Edison Co Transformer protective device
US3090841A (en) * 1959-11-23 1963-05-21 Udylite Corp Transformer control switch
US3100865A (en) * 1960-11-17 1963-08-13 Allis Chalmers Mfg Co Control system for tap changing regulator

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Publication number Priority date Publication date Assignee Title
US2374974A (en) * 1942-10-22 1945-05-01 Gen Electric Electric circuit
CH367563A (de) * 1959-04-07 1963-02-28 Bbc Brown Boveri & Cie Stufenschalter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2680790A (en) * 1951-03-07 1954-06-08 Jansen Bernhard Load changeover switch for tapped transformers using a combination of contact movements
US2833873A (en) * 1956-01-07 1958-05-06 Jansen Bernhard Multi-pole tap switch construction for changing transformer taps under load
US3014999A (en) * 1957-10-24 1961-12-26 Acec Multi-contact electrical switches
US3045173A (en) * 1959-05-01 1962-07-17 Mc Graw Edison Co Transformer protective device
US3090841A (en) * 1959-11-23 1963-05-21 Udylite Corp Transformer control switch
US3100865A (en) * 1960-11-17 1963-08-13 Allis Chalmers Mfg Co Control system for tap changing regulator
US3005881A (en) * 1960-11-28 1961-10-24 Orval T Ellsworth Rotary electric switch

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254296A (en) * 1962-05-25 1966-05-31 Reinhausen Maschf Scheubeck Transfer switch for tap changers for regulating transformers
US3632908A (en) * 1969-06-18 1972-01-04 Reinhausen Maschf Scheubeck Regulating transformer tap-changer switch
US3805087A (en) * 1972-06-20 1974-04-16 Reinhausen Maschf Scheubeck Tap-changing transfer switch having series breaks and means for controlling the recovery voltage between breaks
US3806735A (en) * 1972-06-20 1974-04-23 Reinhausen Maschf Scheubeck Tap changing transfer switch having series breaks
US3934174A (en) * 1973-11-16 1976-01-20 Maschinenfabrik Reinhausen Gebruder Scheubeck K.G. Surge voltage protection for transfer switches for load-tap changers
US4112274A (en) * 1976-02-04 1978-09-05 General Power Corp. Electrical control
FR2462773A1 (fr) * 1979-07-31 1981-02-13 Reinhausen Kg Maschf Commutateur d'echelons pour transformateur a echelons avec un support pour des resistances de polarisation
EP0252400A3 (en) * 1986-07-05 1989-11-02 Maschinenfabrik Reinhausen Gmbh Tap selector for tapped transformers equipped with a preliminary selector
EP0252400A2 (de) * 1986-07-05 1988-01-13 Maschinenfabrik Reinhausen Gmbh Mit Vorwähler versehener Lastwähler für Stufentransformatoren
WO1997023888A1 (de) * 1995-12-21 1997-07-03 Maschinenfabrik Reinhausen Gmbh Lastumschalter für einen stufenschalter
US20130306449A1 (en) * 2012-05-17 2013-11-21 Shanghai Huaming Power Equipment Co., Ltd Change-over structure between moving contact and static contact of tap selector
US9165724B2 (en) * 2012-05-17 2015-10-20 Shanghai Huaming Power Equipment Co., Ltd Change-over structure between moving contact and static contact of tap selector
CN104465140A (zh) * 2014-12-29 2015-03-25 刁俊起 一种永磁驱动有载调压开关
WO2017036496A1 (de) * 2015-08-28 2017-03-09 Maschinenfabrik Reinhausen Gmbh Lastumschalter für einen laststufenschalter und dauerhauptschalter und trennschalter hierfür
RU2713393C2 (ru) * 2015-08-28 2020-02-05 Машиненфабрик Райнхаузен Гмбх Переключатель под нагрузкой для ступенчатого переключателя под нагрузкой и постоянный главный выключатель и разъединитель для него
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
CN114373645A (zh) * 2021-12-30 2022-04-19 雷顿电气科技有限公司 自动转换开关的传动装置
CN114373645B (zh) * 2021-12-30 2023-06-27 雷顿电气科技有限公司 自动转换开关的传动装置

Also Published As

Publication number Publication date
DE1239394B (de) 1967-04-27
NL292688A (xx)
NL288691A (xx)
GB994329A (en) 1965-06-02
CH400346A (de) 1965-10-15
NL123325C (xx)
BE632521A (xx)
BE628195A (xx)

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