Classifications

• • 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
• • 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
  • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
  • H01H9/0005—Tap change devices
  • H01H9/0027—Operating mechanisms
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
  • H01H9/02—Bases, casings, or covers

Definitions

• the invention relates to a diverter switch for a tap changer with continuously switching for each phase continuous main contacts.
• Relieve load switch At the beginning of each switching, i. each actuation of the diverter switch, opens the first of the current leading permanent main contact, the current is on the
• a constructive embodiment of a generic diverter switch with continuously switching for each phase continuous main contacts is known from DE 103 12 176 B3, each of the permanent main contact pairs having a common, electrically conductive permanent main contact, which is Drainenkbar in two different end positions and thus the respective
• Permanent main contact pairs in stationary operation alternatively bridged.
• a centrally extending switching shaft is arranged in the interior of the diverter switch, through which the movable, electrically conductive and designed as a bridging contact permanent main contact can be actuated.
• Each permanent main contact pair consists of a first and a second permanent main contact, which are electrically isolated from each other.
• One of these first permanent main contacts is connected to the one side A, the other of these first permanent main contacts with the other side B of the diverter switch electrical.
• the two second permanent main contacts are with a common
• Permanent main contact actuation functionally necessary, which may be structurally related tolerance-related and also accomplish the leadership of the Umlenkkurbel during the actual switching purely on a small circular sector of a rubbing, provided on the front side of the drive pulley, locking contour.
• Object of the present invention is therefore to provide a diverter switch for a tap changer, in which the Treasurehauptarracrustation increased dielectric withstand voltage between the individual voltage-carrying components, at the same time mechanically simplified construction.
• the general inventive idea is to beschalte the fixed permanent main contacts of the side A or B of the diverter switch by means of a movable rail-shaped permanent main contact, which establishes an electrical connection with the respective corresponding permanent main contacts of the load dissipation only in its respective end positions and also only a single deflection for actuation provides that the spring-hinged each more contact blades of the corresponding fixed permanent main contact connected purely oppressive. It is therefore not so, as in the prior art, the load dissipation during the entire switching over at least a portion of the movably pivotable permanent main contact with this electrically connected, but only in the respective end positions of the switching.
• the spatial distances between the current - carrying components in particular the distance between the
• the movable rail-shaped permanent main contact can be actuated only via a single deflection, d. H. pivotable.
• a two-disc drive disc is provided, each having offset by 120 ° degrees against each other roller engagement, which, depending on the switching direction, can be brought into engagement with arranged on a rocker of the movable permanent main contact actuating rollers to the permanent main contact thus in his respective end position to pivot, such that the respective resiliently articulated plurality of contact blades of the corresponding fixed permanent main contact are connected purely oppressive.
• the actuating rollers run during the entire
• Figure 1 shows a diverter switch according to the invention with permanent main contacts in
• Figures 2a to 2c is also a schematic sectional view of an inventive
• Load-transferring member is a base plate 1, which receives and carries the movable permanent main contacts and the means for their operation for each phase.
• a complete permanent main contact 2 is shown.
• Fixed permanent main contact pairs 3, 4 are, cooperating with this, on the inner wall of an oil vessel, not shown, which encloses the entire diverter switch, attached.
• three contact carriers 5, 6, 7 are provided for each phase.
• each of the permanent permanent main contacts 8 and 9 consists of a plurality of individual contact blades 8.1 and 9.1.
• Each of the contact blades 8.1 and 9.1 is secured to a spring arm 28 and 29, which is mounted resiliently rotatable about an axis 30 and 31, respectively.
• Permanent main contact pair 4 This consists quite analogous from below arranged fixed first permanent main contacts 12, which are electrically connected to the other side B of the diverter switch and above arranged fixed second permanent main contacts 13, which lead to the common load discharge.
• each of the permanent permanent main contacts 12 and 13 of a plurality of individual contact blades 12.1 and 13.1 consisting, in turn, completely analogously by only indicated contact springs 14 and 15 individually resiliently to a spring arm 32 and 33, which in turn about an axis 34th and an axis not visible in this representation 35 are rotatably mounted, articulated.
• the fixed permanent main contacts 9 and 13 are arranged on the first electrically conductive contact carrier 5 and form the common load dissipation.
• Permanent main contacts 8 are arranged on the second contact carrier 6 and connected to the side A of the diverter switch, and the fixed permanent main contacts 12 are, electrically isolated therefrom, arranged on the third contact carrier 7 and connected to the side B of the diverter switch.
• a common electrically conductive and designed as a contact rail movable permanent main contact 16 is provided. He has in the upper area on his left side one
• the movable rail-shaped permanent main contact 16 further comprises a bearing 21 which cooperates with a receptacle, not shown, such that the movable permanent main contact 16 in the longitudinal axis of the diverter switch around the bearing 21 around pivotable is. A more detailed description of the pivoting operation of the permanent main contact 16 can be found in embodiments of Figure 2 again.
• the two ramp surfaces 17 and 18 are not, as known in the prior art, spherically dimensioned so that they would remain on pivoting of the movable permanent main contact 6 to its bearing 21 constantly with the fixed permanent main contacts 9 and 13 in contact, but in a straight line rail-shaped , such that they only when pivoting the movable
• Permanent main contact 16 in one of its two end positions in contact with the respective
• actuating roller 25.1 acts together with the upper drive pulley 23.1, whereas the lower, not visible in this illustration, actuating roller 25.2 can be brought into engagement with the roller grips 23 of the lower drive pulley 23.2.
• the actuating rollers run 25.1 or 25.2 during complete switching smoothly along corresponding outer end faces 27.1 or 27.2 of the respective drive pulley 23.1 or 23.2 contact along and cause by these forced guidance over the corresponding frontal contour 27.1 or 27.2 of the drive pulley 23.1 or 23.2 caused by the According to the invention, therefore, there is no frictional blocking in a central position, but a slight continuous movement of the movable permanent main contact 16 by means of the actuating rollers 25.1 or 25.2 on the corresponding end contours 27.1 or 27.2 of the respective Drive disk 23.1 or 23.2.
• a central opening 26 is provided in the drive plate 23, in which a not shown drive shaft of the diverter switch engages and on the drive pulley 23, in the case of switching, a rotational movement.
• FIGS. 2a to 2c show the top view of a diverter switch according to the invention
• FIG. 2a The stationary state of the wiring of the side B of the diverter switch is shown in FIG. 2a, in which the ramp surface 18 of the movable permanent main contact 16 by means of the roller engagements 22.2 of the lower drive pulley 23.2 and the actuating pulley 25.2 corresponding to the underside of the rocker 24 firmly against the
• FIG. 2c shows the wiring of side A of the on-load tap-changer in the stationary state after switching over has taken place.
• the ramp surface 17 of the movable permanent main contact 16 by means of the roller engagements 22.1 of the upper drive pulley 23.1 and at the top of the rocker 24 corresponding actuating roller 25.1 firmly against the corresponding

Landscapes

• Contacts (AREA)
• Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
• Housings And Mounting Of Transformers (AREA)
• Push-Button Switches (AREA)
• Slide Switches (AREA)
• Arc-Extinguishing Devices That Are Switches (AREA)

Priority Applications (10)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44041644

Family Applications (1)

Country Status (11)

Cited By (1)

Families Citing this family (4)

Citations (3)

Family Cites Families (10)

• 2010
  • 2010-05-11 DE DE102010020180A patent/DE102010020180A1/de not_active Withdrawn
• 2011
  • 2011-02-26 CA CA2798086A patent/CA2798086A1/en not_active Abandoned
  • 2011-02-26 UA UAA201212792A patent/UA107588C2/ru unknown
  • 2011-02-26 RU RU2012153216/07A patent/RU2012153216A/ru not_active Application Discontinuation
  • 2011-02-26 JP JP2013509456A patent/JP5784708B2/ja not_active Expired - Fee Related
  • 2011-02-26 CN CN201180023215.XA patent/CN102893357B/zh not_active Expired - Fee Related
  • 2011-02-26 US US13/642,130 patent/US8927886B2/en not_active Expired - Fee Related
  • 2011-02-26 WO PCT/EP2011/000950 patent/WO2011141082A1/de not_active Ceased
  • 2011-02-26 BR BR112012028426-6A patent/BR112012028426B1/pt not_active IP Right Cessation
  • 2011-02-26 EP EP11707341.1A patent/EP2569789B1/de not_active Not-in-force
  • 2011-02-26 KR KR1020127030584A patent/KR101794851B1/ko not_active Expired - Fee Related

Patent Citations (3)

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