EP1672659A2 - Sectionneur à contact mobile linéairement - Google Patents

Sectionneur à contact mobile linéairement Download PDF

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Publication number
EP1672659A2
EP1672659A2 EP05022821A EP05022821A EP1672659A2 EP 1672659 A2 EP1672659 A2 EP 1672659A2 EP 05022821 A EP05022821 A EP 05022821A EP 05022821 A EP05022821 A EP 05022821A EP 1672659 A2 EP1672659 A2 EP 1672659A2
Authority
EP
European Patent Office
Prior art keywords
contact
switch
push
blade
insulator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05022821A
Other languages
German (de)
English (en)
Other versions
EP1672659A3 (fr
Inventor
Anton Scharlach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elektrotechnische Werke Fritz Driescher & Sohne GmbH
Original Assignee
Elektrotechnische Werke Fritz Driescher & Sohne GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Elektrotechnische Werke Fritz Driescher & Sohne GmbH filed Critical Elektrotechnische Werke Fritz Driescher & Sohne GmbH
Publication of EP1672659A2 publication Critical patent/EP1672659A2/fr
Publication of EP1672659A3 publication Critical patent/EP1672659A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/14—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch
    • H01H31/24—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch with rectilinearly-movable bridging contact

Definitions

  • the invention relates to a push-disconnect switch with two post insulators and a switched on the support insulators electrically connecting switch blade, which has a contact arrangement for contacting a fixed contact of the first post insulator at its front in the closing movement, and in the region of his turn-in direction rear end on the second post insulator is movably guided in a guide device.
  • Such thrust disconnectors are often used in the operated in the medium voltage range power grids of railway systems, in which case they are then usually carried out unipolar. In multi-pole design, however, such slide-type disconnectors are increasingly also used in supply networks of the electricity companies.
  • Such a slide disconnector serves to open or close a circuit, in which case it is only actuated when there are no excessive currents and / or there is no significant voltage change between the terminals of each disconnect switch pole.
  • Typical rated currents of such slide switch are, for example, 630 A or 2500 A, each with a rated voltage of 12-38.5 kV. Such currents can be performed continuously.
  • push-pull disconnectors can withstand significantly higher currents of, for example, 20 kA up to 31.5 kA for current designs over a certain period of time.
  • shear switches have a base frame, are arranged on the two support insulators spaced from each other.
  • the connection between the contact portions in the head region of the support insulators is via a switch blade, usually a pair of knives, produced.
  • the switch blade is mounted longitudinally displaceable in a support insulator, so that it is movable to a fixed contact on the other support insulator to or from this.
  • DE 20 64 037 describes a known construction of a push-break switch with a partially insulated sheathed switching pin, which is slidably mounted in a stationary, isolierstoffgekapselten sliding contact and after passing through an isolating distance in a stationary, surrounded by a Isolierstoffhülle mating contact is retracted.
  • the mating contact piece as well as the sliding contact piece is obviously provided with contact fingers, which bear resiliently on the contact pin and thus at the same time also provide the electrical contact in addition to a guiding function.
  • the second supporting insulator In the area of the rear end of the separating knife pair in the switching-on direction, the second supporting insulator is present, in which the separating knife pair is longitudinally displaceable and, due to the pivoting movement of the crank drive, is also pivotally mounted in a certain frame.
  • a guide device is arranged in the second support insulator, which contains two mutually facing sliding guide elements, which are present at the top or bottom of the separating knife pair.
  • the sliding guide elements are rounded at the contact points, so that they produce a linear contact with the separating knife pairs and so assume the leadership function in cooperation with the crank drive.
  • the sliding guide elements also serve to produce the electrical contact, wherein due to the linear contact higher rated currents than in the above-discussed prior art can be performed with punctiform contact points.
  • the invention is therefore the object of developing a generic slide switch so that higher compared with conventional push-breakers higher short-circuit currents can be performed.
  • a push-disconnect switch with the features of claim 1.
  • This is characterized in particular by the fact that the switch blade carries at its rear end in the switch-on a contact arrangement, the contact elements have in the direction of the second support insulator, the contact arrangement contacted in the on state of the rear side in the switch-on direction fixed contact of the second post insulator and is removed at the turn-off of this.
  • the invention thus provides for the first time a functional separation of the guide function on the second post insulator from the production of the electrical contact.
  • Another advantage here is that can also be realized with the inventive push-break switch higher switching speeds, which extend the application possibilities in practice.
  • the fixed contact of the first post insulator and / or the fixed contact of the second post insulator comprises contact fingers, which in the course of the closing movement into engagement with at least one contact plate of the contact arrangement at the front in the switch-on direction and / or get to the rear of the switch blade in the switch-on direction.
  • the contact fingers are fixedly arranged on a support insulator or on both support insulators, so that they are not moved or only at one point with the switch blade. The moving mass can be reduced thereby, which has an advantageous effect on the switching speed as well as the energy consumption.
  • contact fingers are present only at one end of the switch blade or a support insulator and at the other contact a conventional Kunststoffibook example, with a linear contact means of rollers, sliders, etc. is applied. Furthermore, contact fingers can also be present once at the stationary contact and at the other contact point on the switchgear.
  • Another advantage is when the guide device of the switch blade is designed as a roller guide. Then, a particularly low-friction guidance of the switch blade can be achieved, whereby an even higher switching speed while reducing wear and increased service life can be achieved.
  • the roller guide may have two spaced-apart bearing rollers, which receive the switch blade between them. Then, a reliable guidance of the switch blade is achieved by simple means, wherein further linear guide points are provided so that not only linear movements of the switch blade but also e.g. can be absorbed by a crank drive tilting movements reliably and without increased wear.
  • the guide means of the switch blade is designed as a sliding guide, whereby the design effort for a provision of the guide means can be kept low and, for example, can be used substantially on known guide elements.
  • a push-disconnector 1 has a base frame 2 on which a first support insulator 3 and a second support insulator 4 are mounted. Furthermore, the diverter switch 1 contains a switch blade 5, which can be moved by means of a drive 6 between an open position (FIG. 1) and a closed position (FIGS. 2 and 3). Here, the switching blade 5 is movably mounted by means of a guide device 7 in the second support insulator 4.
  • the first support insulator 3 and the second support insulator 4 are formed substantially identical. They each have an insulator body 31 or 41 as well as a fixed contact 32 or 42 on the head area remote from the base frame 2.
  • the fixed contacts 32 and 42 respectively contain on the upper side connecting plates 33 and 43, by means of which lateral contact plates 34 and 44 are connected.
  • the two contact plates 34 and 44 of each fixed contact 32 and 42 respectively point to the section chamfers 35 or 45, which are to be pointed out in more detail below, on the switch blade 5 (see FIG facilitate.
  • the switching blade 5 has a separating knife pair 51, as can be seen in particular from FIG.
  • a first contact arrangement 52 is arranged at the front end of the switch blade 5 which is in the direction of switch-on movement, that is to say the end pointing to the first support insulator 3.
  • a second contact arrangement 53 is arranged at the rear end in the direction of switch-on movement, that is to say in the region of the second support insulator 4 on the switch blade 5.
  • the first contact arrangement 52 and the second contact arrangement 53 are formed substantially identically and each have a holder 54, which on both sides of the separating knife pair 51st Retraction contacts 55 stops. These each have to the fixed contacts 32 and 42 of the support insulators 3 and 4.
  • electrolytic copper As a base material for the current-carrying components such as the terminal plates 33 and 43, the contact plates 34 and 44, the separating blade pair 51 and the contact assemblies 52 and 53, electrolytic copper is used, which is galvanically silvered.
  • the drive 6 has a drive shaft 61, which in a manner not shown here can be coupled with a drive motor or, in particular for emergency, with a manually operated hand crank.
  • the drive shaft 61 acts in the present embodiment on a four-bar linkage, which has a rocker 62, a coupling 63 and a crank member 64.
  • the crank member 64 is rotatably connected to a switching shaft 65 which is mounted in the base frame 2.
  • One end of an actuator 66 is also also rotatably connected to the switching shaft 65, so that a rotation of the drive shaft 61 can be transferred directly to the actuator 66.
  • the other end of the actuator 66 is pivotally coupled to the switch blade 5 to move it upon actuation of the drive shaft 61 between a closed and an open position of the slide switch 1 back and forth.
  • the guide device 7 is arranged in the head region of the second support insulator 4 within the contact arrangement 53, which has two bearing rollers 71 and 72.
  • the two bearing rollers 71 and 72 are mounted in the two contact plates 44 and extend transversely to the longitudinal direction or direction of movement of the switch blade 5.
  • the bearing rollers 71 and 72 are arranged at such a distance from each other that they take each cutting blade of the separating knife pair 51 between them.
  • Each bearing roller 71 or 72 has for this purpose a collar 73, which can be seen in particular in Fig. 3.
  • the drive shaft 61 is driven to move the switch blade 5 by means of the actuator 66 from the open position shown in FIG. 1 in the closed position shown in FIGS. 2 and 3.
  • the switching blade 5 is guided by the guide means 7 and the actuator 66 stabilized.
  • the first contact arrangement 52 engages with the fixed contact 32 on the first support insulator 3, while the second contact arrangement 53 simultaneously comes into engagement with the fixed contact 42 on the second support insulator 4.
  • the resiliently biased contact fingers 56 slide over the chamfers 35 and 45 of the contact plates 34 and 44 away and provide a clamping connection between the Einfahrtagen 55 and the contact plates 34 and 44 ago.
  • the main flow path of the slide-break switch 1 is closed.
  • the drive 6 is designed so that the rocker 62 and the coupling 63 go beyond the dead center of the four-bar linkage and so produce an end position, which prevents inadvertent contact separation. This ensures that the drive mechanism even under exceptional conditions, such. B. a short circuit, no automatic counter-rotating movement and thus interrupts the main flow path. Especially in the event of a short circuit, enormous dynamic forces can occur due to the expanding current loop, which are, however, controlled by the over-center mechanism of the drive 6.
  • Fig. 1 shows the push-break switch 1 in the end position with the switch open, in which a required separation distance and thus the dielectric strength of the slide-break switch 1 is ensured.
  • the function of the slide switch 1 is recognizable independent of the installation position.
  • the contact assemblies 52 and 53 are equipped with other contacts, as the Einfahressore shown in the figures. Examples of this are known to the skilled person to a large extent, such as resiliently biased rollers, balls or the like.
  • the Einfahressore are not arranged on the switch blade 5 but on the support insulators 3 and 4 at one or both contact points of the slide switch, in which case corresponding contact plates, etc. are provided on the switch blade 5.
  • the fixed contacts on the support insulators 3 and 4 of a slide-break switch 1 need not be identical.
  • the contact arrangements 52 and 53 on the switch blade 5 may have different shapes and provide different contacting possibilities.
  • the bearing rollers 71 and 72 of the guide means 7 may also have a different shape from the embodiment shown. For example it is possible to dispense with the collar 73 and / or provide additional frets laterally from the switch blade 5.
  • a sliding guide serves as a guide device for the switch blade 5.
  • the drive 6 is configured in a different shape than a four-bar linkage.
  • the drive for the movement of the switch blade 5 can be applied to the switch blade 5 elsewhere and by other means.

Landscapes

  • Push-Button Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
EP05022821A 2004-12-14 2005-10-19 Sectionneur à contact mobile linéairement Withdrawn EP1672659A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410060165 DE102004060165B3 (de) 2004-12-14 2004-12-14 Schubtrennschalter

Publications (2)

Publication Number Publication Date
EP1672659A2 true EP1672659A2 (fr) 2006-06-21
EP1672659A3 EP1672659A3 (fr) 2007-02-28

Family

ID=35613060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05022821A Withdrawn EP1672659A3 (fr) 2004-12-14 2005-10-19 Sectionneur à contact mobile linéairement

Country Status (3)

Country Link
EP (1) EP1672659A3 (fr)
CN (1) CN1805093A (fr)
DE (1) DE102004060165B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108922833A (zh) * 2018-06-20 2018-11-30 国网山东省电力公司滨州市沾化区供电公司 一种机械开关分闸动作机构
CN113539732A (zh) * 2021-08-05 2021-10-22 重庆德普电气有限公司 推拉式户外隔离开关

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ299378B6 (cs) * 2007-02-13 2008-07-09 Lekov, A. S. Zarízení pro natácení tocny odpojovacího nože
CN102074404B (zh) * 2011-01-31 2011-09-21 湖北网安科技有限公司 一种高可靠性户外高压隔离开关
CN102184793B (zh) * 2011-04-21 2014-02-12 西安新锐电力设备有限公司 一种隔离开关
CN108711528A (zh) * 2018-04-10 2018-10-26 长园共创电力安全技术股份有限公司 一种接地机构
CN110610832B (zh) * 2019-10-11 2021-05-04 北京中车赛德铁道电气科技有限公司 一种滑移式高压隔离开关
CN111725020B (zh) * 2020-06-29 2023-04-07 浙江福祥瑞特电气有限公司 一种高压隔离开关

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE557123C (de) * 1932-08-19 Sachsenwerk Licht & Kraft Ag Schubtrennschalter, insbesondere fuer Freiluftanlagen
FR68361E (fr) * 1955-11-17 1958-04-29 Ind D Soule Sa Des Ets Perfectionnement aux sectionneurs électriques
DE1110719B (de) * 1959-07-17 1961-07-13 Driescher Spezialfab Fritz Schubtrennschalter
US3694592A (en) * 1971-02-11 1972-09-26 Westinghouse Electric Corp Isolating switch having improved separable contact assembly

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2064037C2 (de) * 1970-12-28 1973-09-27 Voigt & Haeffner Gmbh, 6000 Frankfurt Schubtrennschalter
DE3224743A1 (de) * 1982-07-02 1984-01-05 Brown, Boveri & Cie Ag, 6800 Mannheim Schubtrennschalter fuer mittelspannung- und hochspannungsschalt- und -verteileranlagen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE557123C (de) * 1932-08-19 Sachsenwerk Licht & Kraft Ag Schubtrennschalter, insbesondere fuer Freiluftanlagen
FR68361E (fr) * 1955-11-17 1958-04-29 Ind D Soule Sa Des Ets Perfectionnement aux sectionneurs électriques
DE1110719B (de) * 1959-07-17 1961-07-13 Driescher Spezialfab Fritz Schubtrennschalter
US3694592A (en) * 1971-02-11 1972-09-26 Westinghouse Electric Corp Isolating switch having improved separable contact assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108922833A (zh) * 2018-06-20 2018-11-30 国网山东省电力公司滨州市沾化区供电公司 一种机械开关分闸动作机构
CN113539732A (zh) * 2021-08-05 2021-10-22 重庆德普电气有限公司 推拉式户外隔离开关
CN113539732B (zh) * 2021-08-05 2022-07-29 重庆德普电气有限公司 推拉式户外隔离开关

Also Published As

Publication number Publication date
CN1805093A (zh) 2006-07-19
EP1672659A3 (fr) 2007-02-28
DE102004060165B3 (de) 2006-02-09

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