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
  • 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
  • H01H9/0005—Tap change devices
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
  • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
  • G05F1/10—Regulating voltage or current 
• • 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
  • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
  • H01H9/0005—Tap change devices
  • H01H9/0038—Tap change devices making use of vacuum switches

Definitions

• the invention relates to a tap changer with vacuum interrupters according to the preamble of the first claim.
• Tap changers have been used worldwide for many years to continuously switch between different winding taps of high-speed tap-changers.
• Such tap changer usually consist of a selector for powerless selection of the respective winding tap of the tapped transformer, to be switched to, and a
• the diverter switch for actual switching from the wired to the new, preselected winding tap.
• the sudden changeover is usually carried out with the aid of a force accumulator, when its triggering a switching shaft is rotated quickly.
• the diverter switch also usually has switching contacts and resistor contacts. The switching contacts serve for direct connection of the respective winding tap with the load dissipation, the
• Resistor contacts for short-time wiring d. H. Bridging by means of one or more switching resistors.
• Vacuum interrupter acts.
• the cam is realized here in the form of a horizontally deviating from the circular contour circumferential groove, engages the form-fitting the respective role.
• the object of the invention is therefore to provide a tap changer with vacuum interrupters of the type mentioned above, in which the one or more cams occupy little space within the diverter switch despite a large number of switching contacts to be actuated.
• the general inventive idea is that one or more cams are provided which have both on the top or bottom, as well as on the front side profiled circumferential contours, for example in the form of cams, so that both by the profiled circumferential contour of Front side, as well as the top or bottom electrical contacts, such as vacuum interrupters, are actuated.
• a plurality of areas of the surface of one or more cams are provided for actuating various electrical contacts with different switching sequences.
• Figure 1 is a schematic representation of a part of a tap changer according to the invention
• Figure 2 shows a plan view of a part of a tap changer according to the invention
• FIG. 3 shows a preferred embodiment of a tap changer according to the invention
• Figure 1 shows an embodiment of a cam 1 with a plurality of cams 2.1, 2.2, 2.3 and 2.4 in their interaction control the temporal switching sequence of a contact system for switching a tap changer and are suitable for the operation of multiple vacuum interrupters.
• cams 2.3 and 2.4 On the upper side of the cam 1, two further cams 2.3 and 2.4, also with rotating cams, are mounted, which correspond with rollers 12 and 15 secured to rocker arms 8 and 11 with vacuum interrupters 4 and 7 respectively. It would also be technically feasible to install the cams 2.3 and 2.4 on the underside of the cam 1.
• the provided on the cams 2.3 and 2.4 height profiling on the type of circumferential cam consists of substantially concentric to each other arranged webs.
• the height profile of the cam 2.4 in comparison to that of the cam 2.3 is somewhat adoptedender, so that in the case of rotation of the cam 1 none of each of the height profile of the corresponding control cam 2.3 and 2.4 cross roller 12 and 15 collides with the height profile of the other control cam , In this way, more than the two control cams 2.3 and 2.4 shown in Figure 1 can be provided on the top or bottom of the cam 1.
• cam 1 thus both on the top or bottom, as well as on the front side profiled circumferential contours, for example in the form of cams, provided so that both by the profiled circumferential contour of the front side, as well as the top or Underside various electrical contacts, for example in the form of vacuum interrupters, are actuated.
• the contours on the front side, as well as the upper or lower side can also be referred to as cam tracks.
• the angle of attack of the respective cam can be selected within wide limits and ranges from a very acute to an approximately right angle. It is also possible to form the individual cams with a flowing transition, in the manner of waves. Centered inside the essentially rotationally symmetric
• Cam 1 is a through hole 3 is mounted, is guided by a shift shaft, not shown, which is fixedly connected to the cam 1 and by means of which the cam 1 can be set in rotation.
• a single cam 1 is shown in FIG. 1, which permits the space-saving actuation of a plurality of vacuum interrupters 4 to 7 via a multiplicity of control cams 2.1 to 2.4 provided on it.
• Cams could then in turn both on the top or bottom, as well as the front contoured contours, for example in the form of cam tracks are arranged, as described in Figure 1 and shown in more detail, and thus, if necessary, in a simple manner an even greater number be actuated by vacuum interrupters.
• Figure 2 shows the top view of a part of a tap changer according to the invention
• Vacuum interrupters The vacuum interrupters 4, 5, 6 and 7 are positioned in such a way to the cam disc 1 that they are as compact as possible by means of the rocker arms 8, 9, 10 and 11 and with these cooperating rollers 12, 13, 14 and 15 are actuated.
• the rollers 12 and 15 engage in the case of rotation of the cam 1, the surface topologies of the rotating cams of the respective cams 2.3 and 2.4 from and actuate depending on the surface profile passed through the corresponding corresponding vacuum interrupter 4 and 7. Accordingly, then in parallel to the rollers 13th and 14 on the two front-side cams 2.1 and 2.2 deviating from the circular contours on the type of cam and actuate the respective
• the cam disk 1 shown in FIGS. 1 and 2 is designed in one piece and moreover preferably consists of electrically insulating materials. Alternatively, however, it is also conceivable to construct the cam 1 in several parts, for example such that each cam 2.1 to 2.4 is a separately manufactured component, which is first mounted to a cam 1 following the manufacturing process, or the separately manufactured components on the selector shaft, not shown individually plugged.

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• General Physics & Mathematics (AREA)
• Radar, Positioning & Navigation (AREA)
• Automation & Control Theory (AREA)
• Power Engineering (AREA)
• High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
• Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
• Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
• Mechanisms For Operating Contacts (AREA)
• Switches With Compound Operations (AREA)

Priority Applications (10)

Applications Claiming Priority (2)

Publications (1)

Family

ID=42732388

Family Applications (1)

Country Status (11)

Cited By (6)

Families Citing this family (24)

Citations (4)

Family Cites Families (13)

• 2009
  • 2009-09-26 DE DE200910043171 patent/DE102009043171B4/de active Active
• 2010
  • 2010-06-12 US US13/390,402 patent/US9030175B2/en active Active
  • 2010-06-12 RU RU2012116776/07A patent/RU2012116776A/ru not_active Application Discontinuation
  • 2010-06-12 CN CN201080042683.7A patent/CN102549695B/zh active Active
  • 2010-06-12 EP EP10724318.0A patent/EP2481065B1/de active Active
  • 2010-06-12 BR BR112012004262-9A patent/BR112012004262B1/pt active IP Right Grant
  • 2010-06-12 WO PCT/EP2010/003554 patent/WO2011035825A1/de not_active Ceased
  • 2010-06-12 KR KR1020127006851A patent/KR101710970B1/ko active Active
  • 2010-06-12 CA CA2775010A patent/CA2775010A1/en not_active Abandoned
  • 2010-06-12 JP JP2012530138A patent/JP5694333B2/ja active Active
  • 2010-12-06 UA UAA201203495A patent/UA106630C2/uk unknown

Patent Citations (4)

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