EP0772215A1 - Sectionneur, en particulier disjoncteur sectionneur pour moyenne tension - Google Patents

Sectionneur, en particulier disjoncteur sectionneur pour moyenne tension Download PDF

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Publication number
EP0772215A1
EP0772215A1 EP96116928A EP96116928A EP0772215A1 EP 0772215 A1 EP0772215 A1 EP 0772215A1 EP 96116928 A EP96116928 A EP 96116928A EP 96116928 A EP96116928 A EP 96116928A EP 0772215 A1 EP0772215 A1 EP 0772215A1
Authority
EP
European Patent Office
Prior art keywords
switch according
contact
knife
pin
chamber
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.)
Granted
Application number
EP96116928A
Other languages
German (de)
English (en)
Other versions
EP0772215B1 (fr
Inventor
Raimund Buhl
Helmut Hörchens
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.)
Fritz Driescher Kg Spezialfabrik fur Elektrizitatswerksbedarf & Co GmbH
Original Assignee
Fritz Driescher Kg Spezialfabrik fur Elektrizitatswerksbedarf & Co 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 Fritz Driescher Kg Spezialfabrik fur Elektrizitatswerksbedarf & Co GmbH filed Critical Fritz Driescher Kg Spezialfabrik fur Elektrizitatswerksbedarf & Co GmbH
Publication of EP0772215A1 publication Critical patent/EP0772215A1/fr
Application granted granted Critical
Publication of EP0772215B1 publication Critical patent/EP0772215B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/125—Load break switches comprising a separate circuit breaker
    • H01H33/126—Load break switches comprising a separate circuit breaker being operated by the distal end of a sectionalising contact arm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/125—Load break switches comprising a separate circuit breaker

Definitions

  • the invention relates to a circuit breaker, in particular a medium-voltage switch disconnector with post insulators, on which there is a break contact per pole, with a movable disconnect knife, a lagging contact and with a closed arcing chamber equipped with a movable switching pin, in particular filled with SF 6 gas.
  • Such a load-break switch is known from German patent specification 1 154 170, in which the quenching chamber is located in a secondary flow path, which leads only briefly immediately after opening the main contact current through the retarding contact, which remains temporarily in the switched-on position, through the quenching chamber, until through which the Moving pin of the quenching chamber separating the counter-contact, the circuit is interrupted and the resulting arc is quenched in the quenching chamber.
  • the invention is based on the problem of simplifying the switch design, in particular reducing its space requirement and improving its switching performance, while maintaining the basic advantages of arranging an arcing chamber in the secondary flow path, of the switch specified at the outset.
  • a post insulator with an integrated quenching chamber per pole, the quenching chamber being located between the post insulators of one pole in a preferred embodiment.
  • the quenching chambers used to form separate units for the relevant switches which could often only be assembled with great effort, and the switch dimensions, due to their protruding structure, also the dimensions of the switch cell, In which they are to be installed, the invention results in an extremely compact and space-saving construction paired with a very high switching reliability and switching speed.
  • a particularly favorable construction not only in the sense of a small space requirement, but also in terms of optimal guidance of the auxiliary current path results when the arcing chamber is integrated in the post insulator that bears the main contact with the knife pivot point.
  • the secondary flow path can be implemented in a particularly simple manner by a comparatively short cable connection between the lagging contact and the arcing chamber.
  • the lag contact ensures that the current flows briefly and temporarily on a branch line as soon as the knife interrupts the main current path by opening the associated isolating contact until the movable contact pin in the arcing chamber is released from the fixed contact and the switch-off process is thus completed .
  • the size is further reduced if the cutting knife is divided lengthways and a switching kinematics for the quenching chamber is accommodated between the two cutting knife halves, which ensures a particularly reliable and high switching speed.
  • This switching kinematics is preferably in operative connection with the switching pin of the arcing chamber and the separating knife, i.e. Depending on the respective position of the switching knife, the switching kinematics ensure the right time at which the contact in the arcing chamber is to be interrupted and the spark is to be extinguished.
  • a kinematics which consists of a lever mechanism, works particularly reliably under the conditions here, an angle lever that has been proven to be articulated, which is articulated at one end to the extinguishing chamber switching pin, while the other end is mounted at an articulation point that provides an articulated connection of the free one End of an articulated lever articulated at a fixed point with the free end of a trigger linkage actuated by the cutting knife.
  • Such kinematics mounted between the cutting knife halves not only ensures a separation process that is precisely coordinated with respect to the individual movement sequences, but also ensures a compact, space-saving construction and, due to the low weight, leads to fast switching processes.
  • the kinematics ensure that the movable switching pin of the arcing chamber moves away from its fixed counter contact at exactly the desired time triggers up to which, via the kinematics, the switching pin is held against the excess pressure of approx. 1/2 bar in the arcing chamber.
  • two versions of the kinematics are preferably provided, namely the kinematics can be provided on the one hand with a pawl mounted on the angle lever connected to the extinguishing chamber switching pin and cooperating with a fixed locking pin, in the pivot point of which a leg spring exerting latching forces on the pawl is mounted, a stop pin for the free pawl end being located on the separating knife, while in the second version a pressure spring supported on the separating knife is arranged on the angle lever connected to the extinguishing chamber switching pin.
  • the secondary current path which briefly takes over the current supply is realized in that the lag contact is electrically connected to the fixed contact in the quenching chamber, preferably via a cable, while the movable quenching chamber contact is electrically connected to the disconnecting knife pivot point via the kinematics.
  • FIG. 2 shows an embodiment of a switch unit as a medium-voltage switch disconnector 1, in which the three poles A, B and C of the switch unit can be seen attached to a common base frame 2.
  • Fig. 1 in which switched-off state of the switch 1 is shown in dash-dotted lines, it is clear that each pole is attached to the base frame 2 with two insulators 3 and 4, in the illustrated embodiment, the upper support insulator 3 is the isolating contact support, while it is in the lower support insulator 4 is the fulcrum contact support. Accordingly, the upper support insulator 3 carries the connection or disconnect contact 5, while the contact piece carried by the lower support insulator 4 is designated 6 and has the fulcrum contact 7.
  • a separating knife 8 which can be pivoted about the fulcrum contact 7 and which, as can be seen in FIG. 2, is divided in the longitudinal direction.
  • one of the two cutting knife halves carries a lag contact in the form of a lag switching pin 9, which is insulated from the cutting knife 8 and is pivotably mounted on the latter.
  • each pole A, B and C is provided with an arcing chamber 10 which is integrated in the pivot contact insulator 4 in such a way that it is on the side of the pivot contact insulator 4 facing the isolating contact insulator 3, as a result of which a particularly compact and space-saving arrangement is achieved, as can also be seen in FIG. 2, since each arcing chamber lies within the surface of the base frame 2 essentially defined by the spacing of the support insulators.
  • the movable switching pin 11 protrudes from the arcing chamber 10 on the side facing the separating knife 8 and interacts with a fixed contact 11a in the arcing chamber 10 in a manner still to be explained in connection with the explanation of the auxiliary current path 12.
  • each separating knife 8 or the two knife halves belonging to a knife are, as can be seen in FIG. 1, connected in terms of drive to a drive shaft 14 common to the three poles A, B and C.
  • the actuation insulators are in alignment between the cutting knife halves 8.
  • This kinematics 15 consists essentially of an angle lever 16 as a transmission lever, which is articulated with its one end 16a on the quenching chamber switching pin 11. Its other end is mounted on an articulation point 16b, which forms an articulated connection between the free end of a trigger linkage 17 actuated by the cutting knife 8 and the free end of an articulated lever 18 articulated at a fixed point 18a.
  • the actuating sequence i.e. the freewheel controlling the various movement sequences
  • the angle lever 16 carries a compression spring 21 which is supported on the one hand on the angle lever and on the other hand on the separating knife 8.
  • FIG. 3a shows the kinematics 15 in the normal, switched-on state. If there is a switch-off process, the separating knife 8 is turned by turning the Drive shaft 14 is initially pivoted counterclockwise via the actuating insulator 13 into the intermediate position shown in FIG. 3b, in which, as can be seen from FIG. 3b, the lag pin 9 and the kinematics 15 remain in the position shown in FIG. 3a.
  • the main current path is interrupted by the pulling of the knife 8 by the isolating contact 5, while the current now flows via the secondary current path 12, ie from the upper connection contact 5 via the trailing pin 9 further via a cable 9a and an electrical connection between this and the fixed contact of the arcing chamber 11a, via the movable quenching chamber switching pin 11 and the kinematics 15 electrically connected to the separating knife 8 to the pivot point contact 7 of the lower contact piece 6.
  • the compression spring 21 has already relaxed somewhat, but still acts so strongly on the movable switching pin 11 that it does not detach from the fixed contact 11a in the arcing chamber 10.
  • the stop pin 20 in the slot 19 has reached the left boundary edge of the slot and acts in the sense of pivoting the kinematics 15 also counterclockwise on the release linkage 17, which also pivots the angle lever 16 counterclockwise.
  • the piston plate 11c connected to it Due to the contact interruption movement of the movable switching pin 11, the piston plate 11c connected to it is moved to the left, as a result of which the pressure in the left part of the interior of the arcing chamber 10 is increased, which, due to the bores in the piston plate 11c, leads to an extinguishing gas flow in the direction of the arises when the contacts 11 and 11a are separated and thus the current flow is interrupted.
  • FIGS. 4a to c show a preferred variant for the design of the kinematics 15, which differs from the kinematics explained above in connection with FIGS. 3a to c only in terms of the design which brings about the counterforce to the internal pressure of the arcing chamber 10.
  • this kinematics 15 has a pawl 22, which is preferably pivotally mounted in the knee of the angle lever 16 and is held in a latching position by a leg spring 23, which is supported on the one hand on the angle lever 16 and on the other hand on the pawl 22, in which it with a hook-shaped end engages behind a fixed point (pin) 24 and thereby indirectly, namely via the angle lever 16, compensates for the excess pressure of the arcing chamber as a counter-pressure component.
  • the separating knife 8 carries a release stop 25 acting on the free end of the pawl 22 in the desired angular position of the separating knife 8.
  • FIG. 4a again shows the switch-on position of the kinematics 15, while FIG. 4b shows the separating knife 8 already pulled by the contact 5 in the position pivoted counterclockwise, at which time the explained action of the stop pin 20 on the kinematics takes place.
  • the switch-on process can be carried out in a simple manner by pivoting the disconnecting knife 8 clockwise up to its switch-on position on the disconnect contact 5. During this pivoting movement, the separating knife 8 also brings about the return of the remaining switch parts to the starting position (switched-on state) according to FIGS. 1, 3a and 4a through the mechanical connections explained in detail above.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Gas-Insulated Switchgears (AREA)
EP96116928A 1995-10-31 1996-10-22 Sectionneur, en particulier disjoncteur sectionneur pour moyenne tension Expired - Lifetime EP0772215B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19540552A DE19540552A1 (de) 1995-10-31 1995-10-31 Trennschalter, insbesondere Mittelspannungs-Lasttrennschalter
DE19540552 1995-10-31

Publications (2)

Publication Number Publication Date
EP0772215A1 true EP0772215A1 (fr) 1997-05-07
EP0772215B1 EP0772215B1 (fr) 2000-07-19

Family

ID=7776268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96116928A Expired - Lifetime EP0772215B1 (fr) 1995-10-31 1996-10-22 Sectionneur, en particulier disjoncteur sectionneur pour moyenne tension

Country Status (4)

Country Link
EP (1) EP0772215B1 (fr)
AT (1) ATE194879T1 (fr)
DE (2) DE19540552A1 (fr)
NO (1) NO964375L (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0959483A2 (fr) * 1998-04-20 1999-11-24 Fritz Driescher KG, Spezialfabrik für Elektrizitätswerksbedarf GmbH & Co. Sectionneur de coupure en charge avec une chambre d'extinction
CN106611676A (zh) * 2015-10-26 2017-05-03 辽宁华隆电力科技股份有限公司 一种面接触户外交流高压隔离开关
CN106611658A (zh) * 2015-10-26 2017-05-03 辽宁华隆电力科技股份有限公司 一种具有动静触头斜面的户外交流高压隔离开关
CN106611661A (zh) * 2015-10-26 2017-05-03 辽宁华隆电力科技股份有限公司 一种预制静触头宽度的户外交流高压隔离开关
CN106611657A (zh) * 2015-10-26 2017-05-03 辽宁华隆电力科技股份有限公司 一种不等厚动触头面接触户外交流高压隔离开关
CN106611660A (zh) * 2015-10-26 2017-05-03 辽宁华隆电力科技股份有限公司 一种静触头压紧结构的户外交流高压隔离开关
CN106611659A (zh) * 2015-10-26 2017-05-03 辽宁华隆电力科技股份有限公司 一种带自锁功能的面接触户外交流高压隔离开关
CN108054049A (zh) * 2018-01-31 2018-05-18 大连北方真空开关有限公司 高压隔离开关防掉刀装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004006476B4 (de) * 2004-02-04 2006-02-09 Siemens Ag Lasttrennschalter
CN102543555A (zh) * 2011-12-29 2012-07-04 仪征市电瓷电器有限责任公司 一种中压式气体绝缘隔离开关

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971263C (de) * 1941-04-01 1958-12-31 Merlin Gerin Elektrische Schalteinrichtung
DE1154170B (de) 1960-09-28 1963-09-12 Siemens Ag Lasttrennschalter
US3136875A (en) * 1961-05-09 1964-06-09 Westinghouse Electric Corp Circuit interrupters
FR2281643A2 (fr) * 1974-08-08 1976-03-05 Alsthom Cgee Interrupteur autopneumatique
US4268811A (en) * 1976-02-24 1981-05-19 S&C Electric Company Circuit interrupting device
FR2529712A1 (fr) * 1982-07-05 1984-01-06 Simplex Appareils Interrupteur-sectionneur combine aerien haute tension
US4591678A (en) * 1984-10-26 1986-05-27 Square D Company High power switching apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971263C (de) * 1941-04-01 1958-12-31 Merlin Gerin Elektrische Schalteinrichtung
DE1154170B (de) 1960-09-28 1963-09-12 Siemens Ag Lasttrennschalter
US3136875A (en) * 1961-05-09 1964-06-09 Westinghouse Electric Corp Circuit interrupters
FR2281643A2 (fr) * 1974-08-08 1976-03-05 Alsthom Cgee Interrupteur autopneumatique
US4268811A (en) * 1976-02-24 1981-05-19 S&C Electric Company Circuit interrupting device
FR2529712A1 (fr) * 1982-07-05 1984-01-06 Simplex Appareils Interrupteur-sectionneur combine aerien haute tension
US4591678A (en) * 1984-10-26 1986-05-27 Square D Company High power switching apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0959483A2 (fr) * 1998-04-20 1999-11-24 Fritz Driescher KG, Spezialfabrik für Elektrizitätswerksbedarf GmbH & Co. Sectionneur de coupure en charge avec une chambre d'extinction
EP0959483A3 (fr) * 1998-04-20 2000-06-28 Fritz Driescher KG, Spezialfabrik für Elektrizitätswerksbedarf GmbH & Co. Sectionneur de coupure en charge avec une chambre d'extinction
CN106611676A (zh) * 2015-10-26 2017-05-03 辽宁华隆电力科技股份有限公司 一种面接触户外交流高压隔离开关
CN106611658A (zh) * 2015-10-26 2017-05-03 辽宁华隆电力科技股份有限公司 一种具有动静触头斜面的户外交流高压隔离开关
CN106611661A (zh) * 2015-10-26 2017-05-03 辽宁华隆电力科技股份有限公司 一种预制静触头宽度的户外交流高压隔离开关
CN106611657A (zh) * 2015-10-26 2017-05-03 辽宁华隆电力科技股份有限公司 一种不等厚动触头面接触户外交流高压隔离开关
CN106611660A (zh) * 2015-10-26 2017-05-03 辽宁华隆电力科技股份有限公司 一种静触头压紧结构的户外交流高压隔离开关
CN106611659A (zh) * 2015-10-26 2017-05-03 辽宁华隆电力科技股份有限公司 一种带自锁功能的面接触户外交流高压隔离开关
CN108054049A (zh) * 2018-01-31 2018-05-18 大连北方真空开关有限公司 高压隔离开关防掉刀装置

Also Published As

Publication number Publication date
DE19540552A1 (de) 1997-05-07
EP0772215B1 (fr) 2000-07-19
DE59605621D1 (de) 2000-08-24
NO964375D0 (no) 1996-10-15
ATE194879T1 (de) 2000-08-15
NO964375L (no) 1997-05-02

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