EP0750328A1 - Lasttrennschalter - Google Patents

Lasttrennschalter Download PDF

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Publication number
EP0750328A1
EP0750328A1 EP96401331A EP96401331A EP0750328A1 EP 0750328 A1 EP0750328 A1 EP 0750328A1 EP 96401331 A EP96401331 A EP 96401331A EP 96401331 A EP96401331 A EP 96401331A EP 0750328 A1 EP0750328 A1 EP 0750328A1
Authority
EP
European Patent Office
Prior art keywords
control shaft
electromagnet
switch
operating mechanism
shaft
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
EP96401331A
Other languages
English (en)
French (fr)
Other versions
EP0750328B1 (de
Inventor
Paul Rozier
Joachim Dams
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.)
Grid Solutions SAS
Original Assignee
GEC Alsthom T&D SA
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 GEC Alsthom T&D SA filed Critical GEC Alsthom T&D SA
Publication of EP0750328A1 publication Critical patent/EP0750328A1/de
Application granted granted Critical
Publication of EP0750328B1 publication Critical patent/EP0750328B1/de
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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • 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
    • H01H33/022—Details particular to three-phase circuit breakers
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6667—Details concerning lever type driving rod arrangements

Definitions

  • the present invention relates to a medium-voltage self-disconnecting switch, usable up to 36 kV, with possible extensions up to 72 kV.
  • This device finds application in the production of cells and substations at medium voltage, indoor or outdoor.
  • An electrical disconnect switch is called an electrical device having the power to cut a nominal current, most often 400, 630 or 1250 amperes and which, when in the open position, has between its terminals excellent dielectric strength, at least equal to that required for the disconnectors.
  • the self-disconnecting switch of the invention is derived from the self-disconnecting circuit breaker which was the subject of European patent application No. 92 401816.1, the principle of which is recalled now.
  • Such a self-disconnecting circuit breaker comprises, for each pole, an insulating bushing enclosing a vacuum interrupter, the bushing comprising at a first end a first contact connected to a first terminal of the vacuum interrupter and at a second end a second contact connected to a second terminal of the vacuum interrupter, the bushings being fixed to a metal profile along which is disposed an operating shaft common to the vacuum interrupters and actuated by a control operation of the vacuum interrupters contained in an integral box of the profile, the latter being actuated in rotation to ensure the sectioning function.
  • Such a self-disconnecting circuit breaker makes it possible to fulfill the functions of cutting the current and cutting, and, therefore, it is equivalent to a circuit breaker framed by two disconnectors. Its construction is economical, its reduced size, its maintenance is facilitated by the fact that in the sectioning position, the poles are housed in a drawer that can be extracted under tension in complete safety.
  • the invention relates to a three-phase auto-disconnector switch characterized in that it comprises three insulating bushings each containing a vacuum interrupter, the bushings being integral with a beam which can pivot inside a chassis, the ampoules unladen being maneuvered by means of a control shaft associated with an operating mechanism, the beam being secured to a member for rotation by spring with neutral passage, the opening of the switch being made by the successive operation of the control shaft and of the member for rotating the beam.
  • control shaft is of the rickshaw type, the operating mechanism comprising an electromagnet.
  • control shaft is a rotary shaft, the operating mechanism comprising an electromagnet.
  • the electromagnet is supplied up to the point of passage through the neutral point of the rotating member with neutral point passage.
  • the reference 1 designates a tubular frame, provided with rollers 2, intended to be placed, in the manner of an extractable drawer, in a cabinet not shown.
  • a horizontal beam 4 is articulated by its two ends 4A and 4B to plates 5A and 5B fixed to the chassis, so as to be able to carry out a rotational movement of 90 ° around its longitudinal axis.
  • Beam 4 is at ground potential.
  • a shaft 10 for opening and closing the poles which can be actuated by rotation or by translation.
  • this tree 10 is a tree of the "rickshaw" type, since it acts by moving in translation along its own axis, under the action of an electro coil -magnet 12; the pole control mechanism is explained with reference to pole 7B: the movable rod 12B of the vacuum interrupter 9B is connected to a first end of a metal connecting rod 13B articulated around an axis 14B secured to the bushing 7B; the second end of the connecting rod 13B is articulated at a first end of an insulating connecting rod 15B capable of withstanding the operating voltage of the device; the second end of the insulating rod 15B is articulated in a lumen 17B from a first end of a metal bracket 18B whose second end 19B is articulated on the control shaft 10.
  • the bracket 18B pivots about an axis 20B secured to the beam 4. The translational movement along its axis of the shaft 10 causes the rotation of the bracket 18B and this movement is communicated to the control rod 12B by the connecting rods 15B and 13B.
  • the shaft 10 preferably has a rectangular section in its part between the joints, to allow easy fixing of the brackets; on either side of these joints it preferably has a circular shape, to slide freely through the plates 5A and 5B.
  • control shaft 10 for operating the bulbs is housed inside the joints of the beam 4, the shaft 10 moving in translation completely independently of the rotational movement of the beam 4.
  • the pole 7B has a first socket 24B cooperating with a current inlet 25B, and a second socket 26B cooperating with a bar 27B.
  • the other poles have the same sockets cooperating with the same homologous elements.
  • Insulating covers such as 29C provide insulation between the poles.
  • the pole is in the configuration of Fig. 1
  • the coil of the electromagnet 12 is excited, which has the effect of moving the shaft 10 in translation, causing the opening of the vacuum ampoules.
  • the beam 4 is suddenly pivoted 90 °, which causes the poles to be cut.
  • the passage through neutral is effected, at the latest when the disconnection is completed, the supply of the electromagnet is stopped; under the effect of atmospheric pressure, the vacuum ampoules close.
  • the closure can be effected by rotation of the beam, the contacts of the vacuum interrupter remaining open.
  • the current in the main circuit is then established at the end of the rotation by closing the contacts of the vacuum interrupter.
  • a cam 30 is secured to the beam 4 by a tube 31 passing through the plate 5A in which it can pivot freely; we note that inside this tube passes the shaft 10 for operating the poles. We denote by O the trace of the axis of rotation of the cam 30.
  • the cam 30 is articulated at a first end A of a spring 30A which is kept compressed when the switch is in the closed position.
  • the second end B of the spring 30A is fixed to the plate 5A.
  • the spring pushes the cam in the direction tending to rotate it counter-clockwise.
  • the angle between the axis AB of the spring 30A and the line AO is slightly less than 180 degrees of angle.
  • the cam is kept stationary by a lug 32 fixed to a nut 33 displaceable in translation on a threaded rod 34 which can be rotated by a motor 35; the nut 34 is immobilized in rotation by slides 36 and 37; the lug cooperates with a first shoulder 30 'of the cam, which is provided with a second shoulder 30 ".
  • the operation is as follows: immediately after the opening of the poles, or with a given delay, the motor 35 is actuated in rotation, causing the displacement of the lug 32 to the right of FIG. 2, which rotates the cam 30 in the direction clockwise. As soon as the line AB exceeds the neutral line, the spring 30A suddenly relaxes and causes the cam and all the mobile assembly which is integral with it to rotate rapidly, that is to say beam 4 and poles.
  • the sectioned position is shown in dashed lines in FIG. 2.
  • the switch is closed by operating the motor in the opposite direction to the direction used for opening; the lug, in abutment on the shoulder 30 ", drives the cam anti-clockwise, until passing neutral, with compression of the spring 30A; after which the lug is brought back into the position in abutment the 30 'lug, ready for a new interruption.
  • Figs. 4 and 5 illustrate another mode of actuation of the vacuum ampoules; in these figures, the elements common to these figures and to figures 1 to 3 have been given the same reference numbers.
  • the vacuum interrupters are actuated by a rotating shaft 40; the bracket 18B is this time replaced by a connecting rod 41B, the rest of the control mechanism being unchanged.
  • the shaft 40 is driven by a connecting rod 43 itself rotated by a shaft 44 displaced in translation by an electromagnet 45.
  • the motor 35 is provided with a crank 50 allowing manual control of the sectioning.

Landscapes

  • Keying Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
EP96401331A 1995-06-22 1996-06-19 Lasttrennschalter Expired - Lifetime EP0750328B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9507495A FR2735899B1 (fr) 1995-06-22 1995-06-22 Interrupteur auto-sectionneur
FR9507495 1995-06-22

Publications (2)

Publication Number Publication Date
EP0750328A1 true EP0750328A1 (de) 1996-12-27
EP0750328B1 EP0750328B1 (de) 1999-10-13

Family

ID=9480279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96401331A Expired - Lifetime EP0750328B1 (de) 1995-06-22 1996-06-19 Lasttrennschalter

Country Status (5)

Country Link
EP (1) EP0750328B1 (de)
AT (1) ATE185649T1 (de)
DE (1) DE69604621T2 (de)
ES (1) ES2138303T3 (de)
FR (1) FR2735899B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000025333A1 (de) * 1998-10-23 2000-05-04 Siemens Aktiengesellschaft Schaltanlagen mit in gehäusen angeordneten schaltgeräten
WO2012146517A1 (de) * 2011-04-29 2012-11-01 Siemens Aktiengesellschaft Schaltgerät
CN116844910A (zh) * 2023-06-28 2023-10-03 江苏宏达电气有限公司 一种隔离内置全绝缘立柱式深度融合断路器及互锁方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0424281A1 (de) * 1989-10-16 1991-04-24 Schneider Electric Sa Betätigungsvorrichtung für einen mehrpoligen Hochspannungsschalter
US5134256A (en) * 1990-11-02 1992-07-28 G & W Electric Company Puffer interrupter switch
EP0543681A1 (de) * 1991-11-20 1993-05-26 Gec Alsthom Sa Mittelspannungslastschalter für innen oder aussen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0424281A1 (de) * 1989-10-16 1991-04-24 Schneider Electric Sa Betätigungsvorrichtung für einen mehrpoligen Hochspannungsschalter
US5134256A (en) * 1990-11-02 1992-07-28 G & W Electric Company Puffer interrupter switch
EP0543681A1 (de) * 1991-11-20 1993-05-26 Gec Alsthom Sa Mittelspannungslastschalter für innen oder aussen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000025333A1 (de) * 1998-10-23 2000-05-04 Siemens Aktiengesellschaft Schaltanlagen mit in gehäusen angeordneten schaltgeräten
US6444938B1 (en) 1998-10-23 2002-09-03 Siemens Aktiengesellschaft Switchgear with switching devices arranged in housings
WO2012146517A1 (de) * 2011-04-29 2012-11-01 Siemens Aktiengesellschaft Schaltgerät
CN103503105A (zh) * 2011-04-29 2014-01-08 西门子公司 开关设备
CN103503105B (zh) * 2011-04-29 2015-12-23 西门子公司 开关设备
CN116844910A (zh) * 2023-06-28 2023-10-03 江苏宏达电气有限公司 一种隔离内置全绝缘立柱式深度融合断路器及互锁方法
CN116844910B (zh) * 2023-06-28 2024-05-24 江苏宏达电气有限公司 一种隔离内置全绝缘立柱式深度融合断路器及互锁方法

Also Published As

Publication number Publication date
EP0750328B1 (de) 1999-10-13
DE69604621D1 (de) 1999-11-18
ATE185649T1 (de) 1999-10-15
ES2138303T3 (es) 2000-01-01
DE69604621T2 (de) 2000-05-04
FR2735899A1 (fr) 1996-12-27
FR2735899B1 (fr) 1997-08-01

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