US3258546A - Transfer switch with movable contact toggle mechanism for tapped regulating transformers - Google Patents

Transfer switch with movable contact toggle mechanism for tapped regulating transformers Download PDF

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Publication number
US3258546A
US3258546A US341641A US34164164A US3258546A US 3258546 A US3258546 A US 3258546A US 341641 A US341641 A US 341641A US 34164164 A US34164164 A US 34164164A US 3258546 A US3258546 A US 3258546A
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contacts
fixed
contact
movable
toggle
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US341641A
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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
    • H01H9/0016—Contact arrangements for tap changers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle

Definitions

  • Another object of this invention is to provide transfer switches of the aforementioned description wherein the opening speed characteristic of each movable contact can readily and individually be determined at will, thus minimizing the degree of arcing, or arcing time, which occurs on separation of cooperating separable contacts.
  • FIG. 1 is a diagrammatic perspective view of the contact structure of a polyphase or three-phase transfer switch embodying the present invention showing the fixed contacts and the movable contacts of but one single phase thereof, the contacts of the other phases being omitted in FIG. 1;
  • FIG. 2 is a vertical section of a polyphase or three-phase transfer switch embodying the present invention taken substantially along 2-2 of FIG. 3;
  • FIG. 3 is a top plan view of the structure of FIG. 2;
  • FIG. 4 is a portion of a section taken along 44 of FIG. 2 drawn on a larger scale than FIG. 2 and limited to the constituent parts of one phase of the transfer switch, the constituent parts of the two other phases being omitted in FIG. 4;
  • FIG. 5 is a side elevation of a detail of the structure of FIG. 2 seen in the direction of the arrow A in FIG. 2;
  • FIG. 6 is a diagram illustrating the method of control of the speed of the movable contacts of the structure of FIGS. 1-4 by means of cams;
  • FIG. 7 is another such diagram.
  • reference character Tr has been applied to indicate a transformer winding having two spaced taps U and U
  • the fixed contacts of the transfer switch are supported by a pair of spaced coaxial cylindrical structures 6, 7 of insulating material held in spaced relation by three vertical spacing bars or rails 8, angularly displaced degrees.
  • One-third of the outer surfaces of cylindrical insulating structures 6, 7 supports the fixed contacts 2, 3, 4, 5 of phase U, the fixed contacts of this phase being shown in FIG. 1.
  • the fixed contacts of the two other phases V, W supported by the two other thirds of the outer surfaces of parts 6, 7 have been omitted in FIG. 1.
  • Each insulating cylinder 6, 7 supports one of a pair of spaced fixed contacts which are arranged in registry and adapted to be conductively interconnected by a movable contact or contact bridge.
  • fixed contacts 2, 2 are arranged in registry and adapted to be conductively interconnected by movable contact bridge 9.
  • Fixed contacts 2, 2 and 3, 3 are main contacts and the intermediate fixed contacts 4, 4 and 5, 5 are auxiliary contacts.
  • Contact bridges 9, 10 are main contacts and contact bridges 11, 12 are auxiliary contacts.
  • Leads L L conductively connect taps U and U to the lower fixed main contacts 2, 3.
  • Leads L L conductively connect taps U and U by intermediary of resistors R to the lower fixed auxiliary contacts 4, 5. All the upper fixed contacts 2, 3, 4, 5 are grounded by a system of leads L this being the case when considering a Y connected regulating transformer whose neutral point is grounded.
  • Contact bridge 11 engages fixed contacts 4, 4. Contact bridge 9 parts from fixed contacts 2, 2. Contact bridge 12 engagesfixed contacts 5, 5. Contact bridge 11 parts from fixed contacts 4, 4. Contact bridge engages fixed contacts 3, 3. Contact bridge 12 parts from fixed contacts 5, 5.
  • reference numeral 1 has been applied to designate a pivotable driving shaft coextensive with the geometrical axis of the insulating cylinders 6, 7 supporting the pairs of fixed main contacts 2, 2 and 3, 3 and the pairs of fixed auxiliary con tacts 4, 4 and 5, 5.
  • Shaft 1 may be driven by motor means (not shown) as is well known in the art.
  • Shaft 1 may be driven, for instance, by a spring motor (not shown) which may be wound-up manually.
  • Shaft 1 is associated with motor means causing the shaft to pivot in clockwise or counterclockwise direction, depending upon whether it is desired to change from tap U to tap U or to change from tap U to tap U (see FIG. 1).
  • Reference numerals 14, have been applied to indicate a pair of substantially disc-shaped, spaced, parallel structures arranged at right angles to driving shaft 1.
  • Disc-shaped structures 14, 15 are supported by the spacers 8 for insulating cylinders 6 and 7, as clearly shown on the right of FIG. 2.
  • Disc-shaped structures 14, 15 define cam slots 16 each adapted to form a guiding means for a pin, or the like, entering into it.
  • Disc-shaped structure 17 is arranged below of and parallel to disc-shaped structure 14 and defines cam slots 16 in registry with the cam slots 16 defined by disc-shaped structure 14.
  • Disc-shaped structure 18 is arranged above and parallel to disc-shaped structure 15 and defines cam slots 16 in registry with the cam slots 16 defined by disc-shaped structure 15.
  • the disc-shaped structures 14, 15 define at the outer periphery thereof radially inward extending recesses alternating in U-shape and in V-shape.
  • Reference numerals 13 have been applied to indicate the former and reference numerals 13' have been applied to indicate the latter.
  • Each of U-shaped recesses 13 is provided with a pair of radially extending guide surfaces or ways 9a, 10a, 11a and 12a for the contact bridges 9, 1t), 11 and 12.
  • Registering pairs of guide surfaces or ways on upper and lower disc-shaped members 14, 15 determine the radial trajectories of the upper ends and the lower ends of contact bridges 9, 1t), 11 and 12.
  • Shaft 1 supports a slide-supporting member 19 arranged at right angles to shaft 1 and jointly pivotable with shaft 1.
  • Slide-supporting member 19 has a radially inner hub portion 19a mounted on shaft 1 and a radially outer substantially fork-shaped portion 19b for each phase of the transfer switch.
  • Slide-supporting member 19 is not shown in FIG. 3, and FIG. 4 shows but that portion of slidesupporting member 19 pertaining to one phase of the transfer switch, the other portions of member 19 being broken away in FIG. 4.
  • Each of the fork-shaped portions of slide-supporting member 19 forms a pair of straight parallel guide surfaces or ways 26 guiding a transverse slide 25.
  • Reference numeral has been applied to indicate a plurality of helical slide-biasing tension springs.
  • Springs 20 interconnect the hub-portion 19a of slide-support 19 and transverse slide 25, thus biasing the latter radially inwardly toward shaft 1.
  • each pair of linkages or toggle-levers 22, 23 is pivotably secured to transverse slide 25, and the opposite end of each pair of linkages or toggle-levers 22, 23 is pivotally secured to one of the contact bridges 9, 1t 11 and 12.
  • Each of the contact bridges 9, 10, 11 and 12 is operated from transverse slide 25 by the intermediary of an upper linkage 22, 23 arranged in planes situated be tween parts 14 and 17 and by the intermediary of a lower linkage 22, 23 arranged in planes situated between parts 15 and 18. This arrangement of linkages or toggles 22, 23 is clearly shown in FIG. 2.
  • Each linkage or toggle 22, 23 comprises a pair of levers 22 and 23 which are pivotally interconnected at the juxtaposed end thereof by pins 24 projecting transversely through both levers 22 and 23.
  • the ends of pins 24 extend beyond levers 22 and 23 and project into the cam slots 16.
  • the ends of the upper pins 24 project into the cam slots 16 defined by disc-shaped structures 14 and 17 and the ends of the lower pins 24 project into the cam slots defined by disc-shaped structures 15 and 18.
  • cam slots 16 in parts 14, 15, 17 and 18 determines the opening speeds and the closing speeds of contact bridges 9, 10, 11 and 12 as well as the stroke versus time or travel characteristics thereof. All that is required if it is desired to alter these speeds, or characteristics, is to substitute similar parts for parts 14, 15, 17 and 18, which similar parts have cam slots 16 whose shape or geometrical configuration is diiferent and adapted to achieve the desired contact speeds and stroke versus time or travel characteristics. This will be explained below more in detail in connection with FIGS. 6 and 7.
  • Jansen type regulating transformers with load tap changers include selector switches and transfer switches.
  • the selector switches serve the purpose of selecting a partrcular tap on a tapped transformer winding intended to be connected into an electric circuit.
  • Selector switches do not carry any load currents at the time a particular tap is selected, i.e. they 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 and, therefore, only the transfer switches call for the provision of means for are control and/ or arc suppression.
  • FIG. 1 no selector switch has been shown in order to limit this drawing to what is essential for an understandmg of the instant transfer switch. Normally a selector switch would be interposed between the tapped winding Tr of FIG. 1 and the transfer switch structure shown therein.
  • FIGS. 2-5,v inclusive, have been strictly limited to the transfer switch structure according to this invention, 1.e. they do not.comprise any elements pertaining to a selector switch cooperating with the transfer switch embodying this invention.
  • While the driving means, or the motor means, for operating shaft 1 may be of a conventional nature, they must be sufficiently fast to drastically limit the periods of time during which the current-limiting switch-over resistors R shown in FIG. 1 must carry load or overload currents. These periods of time may be in the order of a few hundredths of a second.
  • FIGS. 1-5, inclusive is particularly desirable because the presence of movable contact bridges and the association with each contact bridge of a pair of fixed contacts results in the formation of serially related points of break.
  • the invention is, however, not limited to this particular feature. In instances in which it is not necessary to form serially related points of break one of the fixed contacts associated with each contact bridge may be omitted and each contact bridge may be reduced to a movable one-point-of-break contact.
  • the feature of arranging the fixed contacts nearer to the vertical axis of the transfer switch than the movable contact bridges and of controlling the contact bridges in such a way that they move during the closing operation thereof radially inwardly toward, and during the opening operation thereof radially outwardly away from, the fixed contacts of the transfer switch is of crucial importance in regard to inspection, maintenance and repair since this feature gives ready access to all the contacts and to the engaging contact surfaces of all thecontacts.
  • FIGS. 1-5, inclusive, and described above is a so-called PEN- NANT transfer switch, this term for designating this type of transfer having been coined by Bernhard Jansen to whom the development of the family of so-called Jansen type transfer switches is due.
  • Other members of this family may differ from a PENNANT transfer switch by the sequence of operation of the movable contacts or contact bridges.
  • the number of fixed and movable contacts varies also with the number of the phases for which any particular piece of equipment is designed.
  • the transfer switch'illustrated in FIG. 3 is intended to control a threephase circuit and comprises four movable contact bridges and eight fixed contacts per phase.
  • FIG. 6 the same reference characters have been applied to indicate like parts as in FIGS. l5.
  • numeral 1 has been applied to diagrammatically indicate a driving shaft for operating a toggle 22, 23.
  • Toggle 22, 23 is tied to and operates movable contact bridge 9 adapted to engage cooperating fixed contacts 2 and to be moved radially outward from fixed contacts 2 to its off position.
  • the letter S has been applied to indicate the maximum separation of contact bridge 9 from contacts 2.
  • Contact bridge 9 is fully moved out of engagement with contacts 2, or fully moved into engagement with contacts 2, upon shaft 1 having completed a pivotal motion encompassing the angle cc.
  • Reference characters 16a and 16b have been applied to two different cam means each adapted to guide the center pivot 24 of toggle 22, 23 during the closing movement and during the opening movement of contact bridge 9 more fully described in connection with FIGS. 1-5.
  • the law of motion to which movable contact bridge 9 is subject depends upon the shape, or geometry, of the cam means which guide center pivot 24. Since the shape, or geometry, of cam means 16a and 16b is different, either of both cam means 16a and 16b subjects center pivot 24 .of toggle 22, 23 and movable contact bridge 9 to different laws of motion.
  • FIG. 7 shows the separation of contacts 2 and con- 'tact bridge 9 plotted against time.
  • reference character a has been applied to indicate the time-contactseparation characteristic which obtains in the case that center pivot 24 is guided by cam means 16a and reference character b has been applied to indicate the time-contactseparation characteristic which obtains in case that center pivot 24 is guided by cam means 16b.
  • cam means 16b results in a relatively large initial velocity of contact separation and a relatively small final velocity of contact separation.
  • FIG. 7 further shows that the use of cam means 16a results in a relatively small initial velocity of contact separation and a relatively large final velocity of contact separation. (The velocity of contact separation is expressed by the rate of rise of curves a and b.)
  • cam means 16a is not suitable for the particular case in hand, but cam means 16b complies with the condition that the arcing time be less than t
  • time-contact-separation characteristic depends upon various parameters, including the intensity of the current to be interrupted, and the rate of rise of the transient recovery voltage tending to re-kindle the are which had been extinguished between the separated contacts.
  • the kind of structure which has been described above is sulficiently flexible to comply with any time-contact-separation characteristic which may be required, or desired, in any particular case since it allows to vary time-contactseparation characteristics at will merely by changing the cam means controlling the movement of the center pivot 24 of toggle 22, 2 3.
  • a transfer switch for tapped regulating transformers comprising in combination:
  • a plurality of movable contacts each movable along a radius of said arcuate pattern into engagement and out of engagement with one of said plurality of fixed contacts, said plurality of movable contacts including two movable outer main contacts each cooperatively related to one of said two fixed outer main contacts, and said plurality of movable contacts further including movable inner auxiliary contacts each operatively related to one of said fixed inner auxiliary contacts;
  • said operating (a) a plurality of fixed contacts arranged in an arcuate means including a pivotable driving shaft arranged pattern, said plurality of fixed contacts including two in the center of said arcuate pattern and at right fixed outer main contacts and fixed inner auxiliary angles to the plane defined by said pattern; and contacts arranged between said two fixed outer main (e) a plurality of fixed cam means each cooperatively contacts;
  • a transfer switch for tapped regulating transformers 10 (c) a plurality of fixed guide means each for one of comprising in combination: said plurality of movable contacts each extending (a) a plurality of fixed contacts arranged in an arcuatc radially outwardly from one of said plurality of fixed pattern, said plurality of fixed contacts including two contacts; fixed outer main contacts and fixed auxiliary con- ((1) a plurality of toggle-levers each having one end tacts arranged between said two fixed outer main pivotally connected to one of said plurality of movcontacts; able contacts and each including an intermediate (b) a plurality of movable contacts each movable along pivot pin situated between the ends thereof;
  • transfer switch for tapped regulating transformers by said pattern, and said driving means further incomprising in combination: eluding a spring biased radially movable member (a) a cylindrical structure substantially of insulating pivotable by and jointly with said driving shaft and material; supporting said other end of each of said plurality E ⁇ plurality of fixed contacts supported by said of toggle-levers; and cylindrical structure arranged at the same level along (e) a fixed frame structure defining a radial guide a segment thereof, said plurality of contacts includmeans for each of said plurality of movable coning two fixed outer main contacts and fixed inner tacts, said fixed frame structure further defining a auXiliary contacts arranged between aid two fi d plurality of cam slots each cooperatively engaging Outer main contacts; and guiding said intermediate pivot pin of one of (c) a plurality of movable contacts each cooperatively aid plurality of toggle-levers, related to one of said plurality of fixed contacts; 3.
  • a transfer switch for tapped regulating transformers (d) a plurality of toggle-levers each having one end comprising i bi i pivotally connected to one of said plurality of mov- (a) a plurality of fixed contacts arranged in an arcuate able contacts and each lncluding an intermediate pattern, said plurality of fixed contacts including two p1v0t pin situated between the ends thereof; fixed outer main contacts and fixed inner auxiliary (6) common means for operating the other end of each contacts arranged between said two fixed outer main 0f aid plurality of toggle-levers, said operating contacts; means including a pivotable driving shaft coextensive (b) a plurality of movable contacts each cooperatively th the aXis Of said cylindrical structure and a comrelated to one of said plurality of fixed contacts; 111011 pp j P Y PP Sald other efldof (c) a plurality of fixed guide means each for one of eaflh 0f a f p rallt
  • transfer switch for tapped regulating transformers able contacts and each including an intermediate compflslng n natl ni pivot i i d between h d th f; (a) a cylindrical structure substantially of insulating (e) common operating means for the other end of material;
  • each of said plurality of toggle-levers said operating (b) a plurality of fixed contacts supported by said means including a pivotable driving shaft arranged (35 cylindrical structure arranged at the same level along in the center of said arcuate pattern and at right a segment thereof, said plurality of contacts includangles to the plane defined by said pattern, and said ing two fixed outer main contacts and fixed inner operating means further including a spring-biased auxiliary contacts arranged between said two fixed common support for said other end of each of said outer main contacts; plurality of toggle-levers driven by said driving shaft (c) a plurality of fixed guide means each for one of and radially movable relative to said driving shaft; said plurality of movable contacts each extending and radially outward from the radially outer surface of (f) a plurality of fixed cam means each cooperatively said cylindrical structure;
  • a transfer switch for tapped regulating transformers comprising in combination:
  • operating means for said plurality of movable contacts including a pivotable driving shaft arranged in the center of said arcuate pattern at right angles to the plane defined by said pattern, said operating means further including a plurality of linkages each having one end operated by said shaft and another end pivotally connected to and operating one of said plurality of movable contacts; and
  • a transfer switch for tapped regulating transformers comprising in combination:
  • operating means for said plurality of movable contacts including a pivotable driving shaft arranged in the center of said arcuate pattern at right angles to the plane defined by said pattern, a slide-supporting member driven by said shaft, a slide supported by and radially movable relative to said slide-supporting member, spring means biasing said slide for radial movement relative to said slide-supporting member, and a plurality of linkages each having one end pivotally secured to said slide and another end pivotally secured to one of said plurality of movable contacts; and
  • a transfer switch for tapped regulating transformers comprising in combination:
  • a fixed plate structure arranged at right angles to said shaft and defining a plurality of cam slots, each of said plurality of cam slots being cooperatively engaged by a pivot pin of one of said plurality of linkages situated intermediate said one end and said other end thereof, said plate structure defining at the outer periphery thereof radially inward extending recesses alternating in U-shape and in V-shape;
  • a transfer switch for tapped regulating transformers comprising in combination:
  • operating means for said plurality of movable contacts including a pivotable driving shaft coextensive with the axis of said cylindrical structure, a slidesupporting member having a radially inner hub portion mounted on said shaft and a radially outer substantially fork-shaped portion defining a pair of straight spaced parallel guide surfaces, a slide supported by said slide-supporting member and guided by said pair of guide surfaces, a plurality of helical tension springs interconnecting said hub portion of said member and said slide to bias said slide radially inwardly toward said shaft, and a plurality of linkages each having one end pivotally secured to said slide and another end pivotally secured to one of said plurality of movable contacts; and
  • a transfer switch for tapped regulating transformers comprising in combination:
  • a transfer switch for tapped three-phase regulating transformers comprising
  • a transfer switch for tapped regulating transformtures into a structural unit leaving the cylindrical ers comprising in combination: space defined between said pair of insulating struc- (a) a pair of coaxial cylindrical contact supporting tures laterally substantially open;
  • said pair of cylindrical structures each in registry (e) a plurality of radially movable contact-bridges adwith one of said first plurality of fixed contacts; jacent each of said three sectors of each of said pair (d) operating means for said plurality of contactof cylindrical structures;
  • each of said plurality of contact- (f) operating means for said plurality of movable bridges selectively radially inward into engagement contact-bridges including a pair of fixed substantially with one of said first plurality and one of said secdisc-shaped structures arranged in parallel relation within said space at right angles to the axis of said pair of cylindrical structures, each of said pair of disc-shaped structures defining a plurality of cam surfaces in each of the three sectors of said pair of ating means including a shaft arranged in coaxial redisc-shaped plates bounded by a pair of said rail lation to and inside of said pair of cylindrical strucmeans, an operating shaft loosely projecting at right tures, a plurality of operating linkages driven by angles through said pair of disc-shaped structures, said shaft, arranged in said cylindrical space and and a plurality of linkages arranged in each of the each supporting one of said plurality of movable three sectors of said space bounded by a pair of said contact-bridges at the radially outer end thereof, and rail means
  • a transfer switch for tapped regulating transformformers the combination of:
  • toggle-levers each of said pair of toggle-levers being a Second plurality of fiXed contacts 81119130r ted 111 all pivotally connected with one end thereof to vertically arcuate pattern on the outside of the other of said Spaced registering points of Said Contact bridge.
  • pair of cylindrical structures each in registry with one (e) means for Operating the other ends of a Pair of Sald fi ahty of fixefi contacts; of toggle-levers, said means including a vertical piv- (d) operating means for said plurality of fcontact- Otable Shaft.
  • a transfer switch for tapped regulating transformers comprising in combination:
  • a transfer switch for tapped regulating transformers comprising in combination:
  • operating means for moving said plurality of contact bridges radially inwardly into engagement with said first plurality of fixed contacts and said second plurality of fixed contacts, said operating means including a shaft arranged coaxially inside said upper contact support and inside said lower contact support, a plurality of linkages operated by said shaft and arranged in the space between said upper contact support and said lower contact support, said plurality of linkages having ends projecting radially outwardly beyond said upper contact support and radially outwardly beyond said lower contact support and through said gap defined between said upper contact support and said lower contact support and tied to said plurality of contact bridges.
  • a transfer switch for tapped regulating transformers comprising in combination:
  • operating means for moving said plurality of contact bridges radially inwardly into engagement with said first plurality of fixed contacts and with said second plurality of fixed contacts, said operating means including a shaft arranged coaxially inside said upper contact support and inside said lower contact support, a plurality of linkages operated by said shaft and arranged in the space between said upper contact support and said lower contact support, said plurality of linkages having radially outer ends projecting through said gap defined between said upper contact support and said lower contact support and tied to said plurality of contact bridges, and a plurality of fixed cam means each operatively related to one of said plurality of linkages for controlling the movement thereof.

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US341641A 1963-02-09 1964-01-31 Transfer switch with movable contact toggle mechanism for tapped regulating transformers Expired - Lifetime US3258546A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM55735A DE1217492B (de) 1963-02-09 1963-02-09 Lastumschalter fuer Stufenschalter von Regeltransformatoren

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US3258546A true US3258546A (en) 1966-06-28

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US (1) US3258546A (uk)
AT (1) AT241621B (uk)
BE (1) BE643587A (uk)
CH (1) CH405498A (uk)
DE (1) DE1217492B (uk)
GB (1) GB995119A (uk)
NL (4) NL6610821A (uk)

Cited By (6)

* 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
US3415957A (en) * 1964-11-14 1968-12-10 Reinhausen Maschf Scheubeck Transfer switch for tap-changing regulating transformers having current-carrying contacts and operating means therefor achieving high initial speeds of contact separation
US3632908A (en) * 1969-06-18 1972-01-04 Reinhausen Maschf Scheubeck Regulating transformer tap-changer switch
US4749156A (en) * 1984-11-19 1988-06-07 Davenport David C Lifting aerial load suspending device
CN103065829A (zh) * 2013-01-06 2013-04-24 南京信息工程大学 一种分离开关使用的快速同步换相机构
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

Citations (2)

* 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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR886951A (fr) * 1942-06-16 1943-10-29 Acec Commutateurs à rupture brusque pour le réglage en charge par gradins de la tension des transformateurs
AT196974B (de) * 1956-01-07 1958-04-10 Bernhard Dr Ing Jansen Lastumschalter für Stufentransformatoren
DE1207002B (de) * 1957-10-17 1965-12-16 Licentia Gmbh Sprunglastschalter fuer Stufentransformatoren
FR1299374A (fr) * 1960-09-07 1962-07-20 Bbc Brown Boveri & Cie Commutateur à prises de réglage pour l'actionnement de quatre contacts de commutation de la charge dans les transformateurs de réglage

Patent Citations (2)

* 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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415957A (en) * 1964-11-14 1968-12-10 Reinhausen Maschf Scheubeck Transfer switch for tap-changing regulating transformers having current-carrying contacts and operating means therefor achieving high initial speeds of contact separation
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
US3632908A (en) * 1969-06-18 1972-01-04 Reinhausen Maschf Scheubeck Regulating transformer tap-changer switch
US4749156A (en) * 1984-11-19 1988-06-07 Davenport David C Lifting aerial load suspending device
CN103065829A (zh) * 2013-01-06 2013-04-24 南京信息工程大学 一种分离开关使用的快速同步换相机构
CN103065829B (zh) * 2013-01-06 2015-05-13 南京信息工程大学 一种分离开关使用的快速同步换相机构
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

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Publication number Publication date
NL128456C (uk)
BE643587A (uk) 1964-05-29
CH405498A (de) 1966-01-15
NL122861C (uk)
AT241621B (de) 1965-08-10
NL6610821A (uk) 1966-10-25
DE1217492B (de) 1966-05-26
NL301185A (uk)
GB995119A (en) 1965-06-16

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