US3590175A - Composite selector switch and reversing switch for tap-changing regulating transformers - Google Patents

Composite selector switch and reversing switch for tap-changing regulating transformers Download PDF

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Publication number
US3590175A
US3590175A US856345A US3590175DA US3590175A US 3590175 A US3590175 A US 3590175A US 856345 A US856345 A US 856345A US 3590175D A US3590175D A US 3590175DA US 3590175 A US3590175 A US 3590175A
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Prior art keywords
contact
contacts
pair
reversing
switch
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Expired - Lifetime
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US856345A
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English (en)
Inventor
Alexander Bleibtreu
Josef A Kreuzpaintner
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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
    • 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
    • H01H3/44—Driving mechanisms, i.e. for transmitting driving force to the contacts using Geneva movement

Definitions

  • Scott AttorneyErwin Salzer ABSTRACT A selector switch and a reversing switch for tapchanging regulating transformers are integrated into a unitary structure performing both the function of tap-selection in connection with a tapped transformer winding and of reversing the terminals of a tapped transformer winding.
  • This integral dual function switch is very compact, hardly exceeding the bulk of a conventional selector switch without reverse switching means.
  • Tap-changing regulating transformers frequently include three basic units, i.e. a transformer having a tapped winding, a selector switch, and a transfer switch. Selector switches are provided to select the desired tap on a tapped transformer winding, and transfer switches for inserting the desired tap into a circuit. Selector switches do not perform any switching operations between contacts that carry currents. This task is performed by the transfer switches. Some tap-changing regulating transformers include, in addition to selector switches and transfer switches, reversing switches.
  • reversing switches The function of reversing switches is to change the polarity of the terminals of a tapped transformer winding.
  • the voltage generated in a particular portion of a tapped transformer winding may be used either to boost, or to buck, another voltage and more particularly the voltage generated in a transformer winding which is not tapped, or principal transformer winding.
  • This invention relates generally to a tap-changing regulating transformer including selector switch means, transfer switch means and reversing switch means, i.e. systems of the kind described in considerable detail in US. Pat. No. 3,366,763 to A. Bleibtreu et al., .Ian. 30, 1968 for Reversing Switch for Tap- Changing Regulating Transformers to which reference may be had for certain details not disclosed below having a bearing on the present invention, but not directly involved in the same.
  • This invention is more particularly related to a novel unit which includes both the selector switch means and the reversing switch means, and whose outstanding feature consists in great compactness, thus making it possible to greatly reduce the bulk of a tap-changing regulating transformer.
  • the structure according to the present invention is an adaptation of multipolar rotary selector switches as disclosed in US. Pat. No. 3,233,049 to A. Bleibtreu, Feb. 1, 1966 for Integral Selector Switch and Transfer Switch Unit for Tapped Regulating Transformers; in U.S. Pat. No. 3,250,864 to A. Bleibtreu et al., May 10, 1966, for Regulating Transformers Having a Large Number of Taps, and in US. Pat. No. 3,366,750 to A. Bleibtreu, Jan. 30, 1968 for Switching Mechanism for Tapped Regulating Transformers.
  • a combined selector switch and reversing switch embodying this invention includes a first plurality of fixed contacts arranged to form a first circular pattern, the constituent contacts of said first plurality of contacts having a relatively small circular pitch at one side of said circular pattern and a relatively large circular pitch at the opposite side of said circular pattern.
  • a first contact arm is pivotable about the center of said first circular pattern and has a radially outer end selectively engageable with each of said first plurality of fixed contacts.
  • the switch further includes a second plurality of fixed contacts arranged to fonn a second circular pattern in coaxial relation to said fust circular pattern.
  • the constituent contacts of said second plurality of contacts have a relatively small circular pitch on one side of said circular pattern and a relatively large circular pitch at the opposite side of said circular pattern.
  • the region of said second circular pattern where there is a relatively large circular pitch between the constituent contacts thereof includes a center contact.
  • the switch further includes a pair of additional fixed contacts immediately adjacent said center contact each having the same angular pitch relative to said center contact and each fonning part of said second circular pattern.
  • a second contact arm is pivotable about the center of said second circular pattern and has a radially outer end selectively engageable with each of said second plurality of fixed contacts.
  • the structure further includes a movable reversing contact pivotable about the center of said second circular pattern and selectively conductively connecting said center contact with one of additional fixed contacts.
  • FIG. 1 shows in vertical section a combined selector switch and reversing switch embodying this invention, FIG. 1 being a section taken substantially along II of FIG. 2;
  • FIG. 2 is a transverse section of the structure shown in FIG. 1 taken substantially along the line II-Il of FIG. 1;
  • FIG. 3 is a development of the contact structure of FIGS. 1 and 2 into a plane, i.e. the plane of the paper on which FIG. 3 is drawn;
  • FIG. 4 is a diagrammatic representation of the circuitry of the structure of FIGS. 1 and 2;
  • FIG. 5 is a section substantially along l-l of FIG. 2 and shows on a larger scale than FIG. 1 the above referred-tocenter contact and its associated parts;
  • FIG. 6 shows on a larger scale than FIG. 1 a portion of the drive mechanism shown in FIG. 1 for the combined selector and reversing switch;
  • FIG. 7 is a top plan view of the structure shown in FIG. 6.
  • FIGS. 1 and 2 a plurality of vertical bars 21 of insulating material are arranged to define a cylindrical surface and form a squirrel-cagelike structure for supporting the fixed contacts of a composite selector and reversing switch.
  • the selector and reversing switch of FIGS. 1 and 2 is intended to be used together with three tapped transformer windings each having thirteen taps. Each tap is conductively connected to a fixed contact supported by vertical insulating bars 21.
  • the 13 fixed contacts of each of the three phases may be designated by the reference characters 1,2,3,4,5 across8,9,l0,1l,12,13.
  • FIG. 1 shows to the left thereof a vertical insulating bar 21 supporting the fixed contacts 5 and 6 of all three phases U,V,W.
  • each insulating bar 21 supports an even fixed contact and an odd fixed contact for each phase U,V,W.
  • the first bar 21 supports the fixed contacts 5,6 of each phase U,V,W or a total of six fixed contacts
  • the second bar 21 supports the fixed contacts 3, 4 of each phase U,V,W, or a total of six contacts, etc.
  • Fig. 3 further clearly illustrates that the fixed even contacts 2,4,6...8,10,12 and the fixed odd contacts l,3,5....7,9,11,l3 are arranged in planes parallel to each other.
  • Reference numeral 27 has been applied to indicate a center column arranged in coaxial relation to the squirrel-cage structure formed by insulating bars 21.
  • Column 27 supports a plurality of pairs of stationary slip rings 25,26 mounted on the outer surface thereof.
  • the structure of FIGS. 1 and 2 further includes contact arms or contact bridges 23 and 24 of which each is pivotable about the longitudinal axis of column 27. When pivoted, the radially inner ends of contact arms or contact bridges 23 slide on the surfaces of slip rings 25, while the radially outer ends of contact bridges 23 are adapted to engage selectively the odd numbered fixed contacts 1,3,5....9,11,l3 of the three phases U,V,W.
  • contact bridges 24 When contact bridges 24 are pivoted their radially inner ends slide upon the surfaces of slip rings 26, while the radially outer ends of contact bridges24 are adapted to engage selectively the even numbered fixed contacts 2,4,6 ...8.l0,l2 of the three phases U,V;W. In FIG. I. but the three bridges 24 can be seen, the
  • pitch or spacing between adjacent insulating bars 21, or the angular relation between adjacent insulating bars 21 is not equal and corresponds to the difference in potential between the fixed contacts supported by the insulating bars 21.
  • the spacing between, or the angles enclosed between, the insulating bars supporting contacts 1 and 3 and 5 and 7 and 9 and 11 is smaller thanthe angular pitch or spacing between, or the angles enclosed between, the insulating bars 21 supporting contacts 11 and I3, and I3 and 1, respectively. This is particularly evident from FIG. 3. y
  • the insulating bar 21 at the extreme right of FIGS. I and 2 supports fixed center contacts K arranged at the levels uni t..yrtcinnrn tnrhsndd .n nhrrssiflrrisqnnsn l,3,5...9.11,l3 of the switch.
  • Fixed center contacts K are adapted to be engaged by the radially outer ends of contact arms or contact bridges 24.
  • Reversing switch contacts are arranged in the same cylindrical surface as fixed contacts 1 to 13 of phases U,V.W and vertical insulating rods 28.29 form part of the squirrel cage structure defined by vertical insular ing rods 21.
  • the three fixed contacts K are arranged in the planes or at the levels Ug,V;.W; and. adapted to be engaged by the radially outer ends of contact bridg s 24.
  • Each center contact K is provided with a terminal or connector 51 for connecting the same to a nontappcd or principal transformer winding, as will be shown below more in detail in connection with FIG. 4.
  • the movable reversing switch contacts are pivotable about the common longitudinal axis of column 27 and the squirrel cage structure formed by vertical bars 21.
  • the movable reversing switch contacts 39 are affixed to scgmcnt shaped contact supports 31. The latter are tied together by vertical tie rods 32 of insulating material. The upper ends of tie rods 32 are affixed to an arm 34 having a radially inner bearing 36 pivotslly mounted on th outer surface of switch column 27.
  • tie rods 32 are affixed to an arm having a radially inner bearing an pivotally mounted on the outer surface of switch column 27.
  • Reference numeral .33 has been applied to generally indicate the pivotablc unit including parts 30.31.32.34.35.36..
  • FIG. 2 the fixed reversing switch con tact; and are pr vi ed with terminals or c nnectors 37 for formerwinding.
  • crank 41 operates a pair of geneva gears 42,43 of which one 42 is arranged above crank 41 and the other 43 is arranged below crank 41.
  • Crank 41 includes a pair of cams or pins angularly displaced 180 deg. intended to engage geneva gears 42,43.
  • Geneva gear 42 is provided to operate contact bridges 23 and geneva gear 43 is provided to operate contact bridges 24. To this end contact bridges 23 are tied to geneva gear 42 and contact bridges 24 are tied to geneva gear 43 by tie means as will be explained below.
  • Geneva gears 42.43 are provided with substantially radially extending slots or recesses 44,45.
  • FIG. 7 shows the recesses 44,45 in geneva gear 43, and geneva gear 42 is provided with like substantially radially extending recesses or slots. It will be apparent from FIG. 7 that slots or recesses 44 are outwardly flaring and that slots or recesses 45 have substantially the same width along their entire length, except at their closed ends.
  • the relatively large or outwardly flaring slots or recesses of geneva gears 42, 43 result in relatively small angular displacements when these gears are engaged by the pins of crank 41 and pivoted.
  • the relatively narrow slots or recesses 45 result in relatively large angular displacements when gears 42,43 are engaged by the pins of crank 41 and pivoted.
  • the lower geneva gear 43 is provided with a drive pin 46 engaging upon each complete revolution of gear 43 the fork-shaped end 48 of a one sided reversing lever 49 pivotable about shaft 41.
  • the fork-shaped end 48 of reversing lever 49 is permanently engaged by drive pin 47 integral with pivotable unit 34, described above in detail.
  • Drive pin 46 engages the forkshaped end of reversing lever 49 only at the end of each full revolution of geneva gear 43.
  • contact bridges 24 move away from fixed contacts 12 into engagement with contacts K
  • reversing switch contacts-30 are pivoted out of engagement with fixed reversing switch contacts and into engagement with fixed reversing switch contacts The latter position has been shown in FIG. 2.
  • the aforementioned pivotal motion of movable reversing switch contacts 30 is effected by the pivotal motion of reversing lever 49 transmitted by drive pin 47 to pivotable unit 34 including the vertical insulating bars 32.
  • Geneva gear 42 is provided with an axial projection 42' integral with an annular member 42" mounted on, and pivotable around, column 27.
  • the upper end of a tie rod 38,0f insulating material is affixed to annular member 42" and the lower end of said tie rod 38 is affixed to contact bridges 23 so that contact bridges 23 are driven in unison with geneva gear 42.
  • tie rods 38 are broken away at a point close to annular member 42" and thus FIG. i does not show the mechanical connection between tie rod 38 affixed to annular member 42" and contact bridges 23.
  • the aforementioned axial projection 42' of geneva gear 42 projects transversely across geneva gear 43 which is provided with a sector-shaped slot for the passage of projection 42'. The length of this slot is sufflcient to allowunimpeded pivotal movements of geneva gear 42.
  • Geneva gear 43 is provided with a hub member 43 having an axial projection 43" integral with an insulating rod 38 projecting verticallyin downward direction to which con-.
  • FIG. 1 shows the lower ends of both tie rods 38 of insulating material.
  • the lower ends of tie rods 38 are integral with two annular members 42" and 43". respectively. of which each is pivotable about column 27 and of which each is in the shape of a bearing.
  • the upper annular bearing 36 for the pivotable contact structure 33'including Contacts 39 forms sector-shaped apertures for the transverse passage of parts 32 and 43 through it.
  • FIG. 4 is a diagrammatic representation of the circuitry of 5 I the structure of FIG. 1.
  • a transformer'in cludes a nontapped winding Tr-having a terminal P permanently conductively connected by lead L tofixed contact K and a tapped winding Tr having 13 taps numbered from 1 to 13 and ends All even selector switch taps numbered 2-12 are connected to contacts 2-12 arranged in a circular pattern, and all odd selector switch taps numbered 1-13 are conductively connected to contacts l-l3jarranged in another circular pattern.
  • Tap 1 is conductively connected to fixed switch contact 1
  • tap 2 is conductively connected to fixed switch contact 2, etc.
  • tap 13 is conductively connected to fixed switch contact 13.
  • FIG. 4 Such an arrangement of leads interconnecting corresponding taps of a tapped windingand fixed contacts of a selector switch has been illustrated in FIG. 4 of US. Pat. No. 3,176,089 to A. Bleibtreu' et al., Mar. 30, 1965 for Load TapChangers for Transformers but has been shown only diagrammatically in FIG. 4 where the plurality of leads from the various taps 1-13 to the various fixed contacts 1-13 of the switch have been indicated by a single line. in H0.
  • reference numeral 23 has been applied to indicate the pivotable contact arm or contact bridge adapted to selectively connect either of the odd numbered fixed contacts 1-13 to the slip ring 25 and reference numeral 24 has been applied to indicate the pivotable contact arm or contact bridge adapted to selectively connect either of the even numbered fixed con;
  • fixed contacts K are in the form of rods and the radially outer ends of contact bridges 24 are formed by a pair of'fingers engaging both the upper and the lower side of the rod-shaped contacts K.
  • Contacts K project transversely through vertical insulating bars 21 by which they are supported.
  • the pivotable contact segments 30 engage both sides of rod-shaped contacts K and are biased by spring action into engagement with rod-shaped contacts K.
  • Each contact segment 30 is arranged inside of a segment-shaped support 31 therefor.
  • the right ends of rod contacts K are screw-threaded to secure to them terminals such as terminal 51 shown in FIGS. 1-3.
  • Mounted on rod contacts K are two clamping members each to one side of insulating bar 21 for securing the former to the latter.
  • the upper end of column 27 may be in the'form of a plate forming a bearing 27 As shown in FIGS. 6 and '7 the upper end of column 27 may be of reduced diameter and may be in the form of a vertical shaft 27" for mounting parts 34,43 and d2 thereon.
  • a combined selector switch and reversing switch for use in tap-changing regulating transformers said switch including:
  • a. a first plurality of fixed contacts (1,3,5...9,11,13) arranged to form a first circular pattern, the constituent contacts (l,3,5...9,11,il3) of said first circular pattern having a relatively small circular pitch (a) at oneside of for supporting shaft said pattern and a relatively large circular pitch (6) at the opposite side of said pattern;
  • a first contact arm (23) pivotable about the center of said first circular pattern and having a radially outer end selectively engageable with each of said first plurality of fixed contacts (1,3,5 ,7,9,l1,13);
  • a second plurality of fixed contacts (2,4,6...l0,12,l() arranged to form a second circular pattern in coaxial relation to said first circular pattern, the constituent contacts (2,4,6...10,12,K) of said second circular pattern having a relatively smallcircular pitch (a) at one side of said pattern and a relatively large circular pitch (3) at the opposite side of said pattern, the region of said second circular pattern where there is a relatively large circular pitch (B) between the constituent contacts (2,4,6...10,l2,K) thereof including a center contact (K);
  • a second contact arm (26) pivotable about the center of said second circular pattern and having a radially outer end selectively engageable with each of said second plurality of fixed contacts (2,4,6...10,12,K);
  • a combined selector switch' and reversing switch as specified in claim 1 including:
  • arm means extending radially outward from said column (27) each having a radially inner end defining a bearing (36) engaging the outer surface of said column (27) and each having a radially outer end affixed to said movable reversing contact (30) to operate said movable reversing contact.
  • a polyphase combined selector switch and switch including:
  • a polyphase combined selector switch and reversing switch as specified in claim 4 including: 5 a. a column (27) arranged in the center of said squirrel-cage insulating structure supporting a plurality of slip rings (25,26) .each engaged by the radially inner end of one of said plurality of contact arms (23,24);
  • said gear drive (40) includes a crank mechanism (41); a pair of geneva gears (42,43) operated by said crank mechanism (41) for operating said plurality of contact arms (23,24); a reversing contact operating lever (49) pivotable about a fixed point (41) and having a fork-shaped end (48) engageable by a pin (46) integral with one of said pair of geneva gears (43), said forkshaped end (48) of said reversing contact operating lever (49) being permanently engaged by said pin (47) projecting upward from said one (34) of said pair of operating arms (34,35).

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  • Switch Cases, Indication, And Locking (AREA)
  • Transmission Devices (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Housings And Mounting Of Transformers (AREA)
US856345A 1968-09-14 1969-09-09 Composite selector switch and reversing switch for tap-changing regulating transformers Expired - Lifetime US3590175A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681788013 DE1788013B1 (de) 1968-09-14 1968-09-14 Stufenwaehler mit wender fuer stufenschalter von re geltransfor matoren

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US3590175A true US3590175A (en) 1971-06-29

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US (1) US3590175A (de)
JP (1) JPS527130B1 (de)
AT (1) AT296438B (de)
BE (1) BE738802A (de)
CH (1) CH493156A (de)
DE (1) DE1788013B1 (de)
ES (1) ES371468A1 (de)
FR (1) FR2018098B1 (de)
GB (1) GB1252839A (de)
NL (1) NL145983B (de)
SE (1) SE350873B (de)

Cited By (12)

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Publication number Priority date Publication date Assignee Title
US4647731A (en) * 1984-07-04 1987-03-03 Ateliers De Constructions Electriques De Charleroi (Acec) Societe Anonyme Transformer crankshaft load selector
US4939319A (en) * 1988-08-12 1990-07-03 Maschinenfabrik Reinhausen Gmbh Step selector for a stepped transformer
US5523674A (en) * 1992-07-16 1996-06-04 Maschinenfabrik Reinhausen Gmbh Step switch
US20080078922A1 (en) * 2006-07-17 2008-04-03 Nuctech Company Limited High-voltage automatic changeover switch
US20090205938A1 (en) * 2008-02-12 2009-08-20 Adc Gmbh Switching distribution board
EP2200057A1 (de) * 2008-12-22 2010-06-23 AREVA T&D AG Antriebssvorrichtung eines Mittel- oder Hoschspannungstrennschalters
US20130213776A1 (en) * 2010-02-11 2013-08-22 Klaus Hoepfl Tap changer having a freewheel
US20140159847A1 (en) * 2011-09-17 2014-06-12 Silke Wrede On-load tap changer
US20160293325A1 (en) * 2013-12-05 2016-10-06 Maschinenfabrik Reinhausen Gmbh Electrical switching system for a three-phase network
US9583284B2 (en) 2014-07-08 2017-02-28 Hyundai Heavy Industries Co., Ltd. Tap changer
WO2018148811A1 (en) * 2017-02-16 2018-08-23 Abb Bulgaria Eood Selector with preselector for on-load tap changer
CN114050020A (zh) * 2021-11-02 2022-02-15 国网四川省电力公司雅安供电公司 一种档位切换、极性切换联动的有载分接开关

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DE2749852C2 (de) * 1977-11-08 1981-10-22 Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg Stufenwähler für Stufentransformatoren
JPS57180013A (en) * 1981-04-28 1982-11-05 Tokyo Shibaura Electric Co Contact for tap changer
DE4041980C2 (de) * 1990-12-21 1996-04-11 Aeg Tro Transformatoren Gmbh Wähler für Stufenschalter von Transformatoren und Drosselspulen
DE102007023124B3 (de) * 2007-05-16 2008-10-02 Maschinenfabrik Reinhausen Gmbh Schaltanordnung
CN103426657B (zh) * 2012-05-17 2016-03-30 上海华明电力设备制造有限公司 一种分接选择器动触头与静触头之间的切换结构
DE102013112405A1 (de) * 2013-11-12 2015-05-13 Maschinenfabrik Reinhausen Gmbh Kontakteinheit
DE102013113505B4 (de) 2013-12-05 2017-01-05 Maschinenfabrik Reinhausen Gmbh Schaltanordnung und Verfahren zum Betätigen der Schaltanordnung

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US3176089A (en) * 1961-06-22 1965-03-30 Reinhausen Maschf Scheubeck Load tap changers for transformers
US3233049A (en) * 1962-07-12 1966-02-01 Reinhausen Maschf Scheubeck Integral selector switch and transfer switch unit for tapped regulating transformers
US3250864A (en) * 1962-07-04 1966-05-10 Reinhausen Maschf Scheubeck Regulating transformers having a large number of taps
US3366763A (en) * 1965-07-20 1968-01-30 Reinhausen Maschf Scheubeck Reversing switch for tap-changing regulating transformers
US3366750A (en) * 1963-09-18 1968-01-30 Reinhausen Maschf Scheubeck Switching mechanism for tapped regulating transformers

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FR996130A (fr) * 1949-08-09 1951-12-13 Sélecteur de prises d'enroulement pour transformateur électrique
DE856019C (de) * 1950-11-23 1952-11-17 Siemens Ag Wendeschalterantrieb mit Rollen- bzw. Gleitkoerpergesperre
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FR1537430A (fr) * 1966-10-14 1968-08-23 Reinhausen Maschf Scheubeck Mécanisme à croix de malte pour sélecteur d'étages de transformateurs de réglage

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US3176089A (en) * 1961-06-22 1965-03-30 Reinhausen Maschf Scheubeck Load tap changers for transformers
US3250864A (en) * 1962-07-04 1966-05-10 Reinhausen Maschf Scheubeck Regulating transformers having a large number of taps
US3233049A (en) * 1962-07-12 1966-02-01 Reinhausen Maschf Scheubeck Integral selector switch and transfer switch unit for tapped regulating transformers
US3366750A (en) * 1963-09-18 1968-01-30 Reinhausen Maschf Scheubeck Switching mechanism for tapped regulating transformers
US3366763A (en) * 1965-07-20 1968-01-30 Reinhausen Maschf Scheubeck Reversing switch for tap-changing regulating transformers

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647731A (en) * 1984-07-04 1987-03-03 Ateliers De Constructions Electriques De Charleroi (Acec) Societe Anonyme Transformer crankshaft load selector
US4939319A (en) * 1988-08-12 1990-07-03 Maschinenfabrik Reinhausen Gmbh Step selector for a stepped transformer
US5523674A (en) * 1992-07-16 1996-06-04 Maschinenfabrik Reinhausen Gmbh Step switch
US7679012B2 (en) * 2006-07-17 2010-03-16 Nuctech Company Limited High-voltage automatic changeover switch
US20080078922A1 (en) * 2006-07-17 2008-04-03 Nuctech Company Limited High-voltage automatic changeover switch
US8153914B2 (en) * 2008-02-12 2012-04-10 Adc Gmbh Switching distribution board
US20090205938A1 (en) * 2008-02-12 2009-08-20 Adc Gmbh Switching distribution board
CN101840797B (zh) * 2008-12-22 2014-05-07 阿尔斯通技术有限公司 尤其用于控制高压或中压断路器的机械控制装置
US20100155214A1 (en) * 2008-12-22 2010-06-24 Areva T&D Ag Mechanical control device especially for controlling a high-voltage or medium-voltage disconnector
FR2940508A1 (fr) * 2008-12-22 2010-06-25 Areva T & D Ag Dispositif mecanique de commande d'un sectionneur a haute ou moyenne tension
CN101840797A (zh) * 2008-12-22 2010-09-22 爱瑞万T&D股份有限公司 尤其用于控制高压或中压断路器的机械控制装置
US8191444B2 (en) 2008-12-22 2012-06-05 Areva T&D Ag Mechanical control device especially for controlling a high-voltage or medium-voltage disconnector
EP2200057A1 (de) * 2008-12-22 2010-06-23 AREVA T&D AG Antriebssvorrichtung eines Mittel- oder Hoschspannungstrennschalters
US20130213776A1 (en) * 2010-02-11 2013-08-22 Klaus Hoepfl Tap changer having a freewheel
US20140159847A1 (en) * 2011-09-17 2014-06-12 Silke Wrede On-load tap changer
US20160293325A1 (en) * 2013-12-05 2016-10-06 Maschinenfabrik Reinhausen Gmbh Electrical switching system for a three-phase network
US10176919B2 (en) * 2013-12-05 2019-01-08 Maschinenfabrik Reinhausen Gmbh Electrical switching system for a three-phase network
US9583284B2 (en) 2014-07-08 2017-02-28 Hyundai Heavy Industries Co., Ltd. Tap changer
WO2018148811A1 (en) * 2017-02-16 2018-08-23 Abb Bulgaria Eood Selector with preselector for on-load tap changer
CN114050020A (zh) * 2021-11-02 2022-02-15 国网四川省电力公司雅安供电公司 一种档位切换、极性切换联动的有载分接开关
CN114050020B (zh) * 2021-11-02 2024-05-03 国网四川省电力公司雅安供电公司 一种档位切换、极性切换联动的有载分接开关

Also Published As

Publication number Publication date
AT296438B (de) 1972-02-10
DE1788013B1 (de) 1971-12-02
CH493156A (de) 1970-06-30
NL145983B (nl) 1975-05-15
NL6913919A (de) 1970-03-17
JPS527130B1 (de) 1977-02-28
BE738802A (de) 1970-02-16
FR2018098A1 (de) 1970-05-29
SE350873B (de) 1972-11-06
FR2018098B1 (de) 1974-09-20
ES371468A1 (es) 1971-10-16
GB1252839A (de) 1971-11-10

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