EP0334181A1 - Hochspannungsschalter mit geringer Antriebsenergie - Google Patents

Hochspannungsschalter mit geringer Antriebsenergie Download PDF

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Publication number
EP0334181A1
EP0334181A1 EP89104558A EP89104558A EP0334181A1 EP 0334181 A1 EP0334181 A1 EP 0334181A1 EP 89104558 A EP89104558 A EP 89104558A EP 89104558 A EP89104558 A EP 89104558A EP 0334181 A1 EP0334181 A1 EP 0334181A1
Authority
EP
European Patent Office
Prior art keywords
tube
contact
circuit breaker
movable
constituting
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
EP89104558A
Other languages
English (en)
French (fr)
Other versions
EP0334181B1 (de
Inventor
Edmond Thuries
Denis Dufournet
Michel Perret
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.)
Alstom Holdings SA
Original Assignee
Alstom SA
GEC Alsthom 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 Alstom SA, GEC Alsthom SA filed Critical Alstom SA
Priority to AT89104558T priority Critical patent/ATE99829T1/de
Publication of EP0334181A1 publication Critical patent/EP0334181A1/de
Application granted granted Critical
Publication of EP0334181B1 publication Critical patent/EP0334181B1/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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7007—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein the flow is a function of the current being interrupted
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/901—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism making use of the energy of the arc or an auxiliary arc
    • H01H33/903—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism making use of the energy of the arc or an auxiliary arc and assisting the operating mechanism

Definitions

  • the present invention relates to a high voltage circuit breaker in which the breaking chamber is filled with dielectric gas, such as sulfur hexafluoride, and in which the energy of the arc is used, thanks to the increase in pressure it gives to gas, to reduce the energy required for cutting.
  • dielectric gas such as sulfur hexafluoride
  • the invention relates more particularly to a circuit breaker having a blowing cylinder and a second chamber in which an additional pair of contacts is capable of generating, when the circuit breaker opens, a secondary arc used to help provide energy for the opening maneuver.
  • Such a circuit breaker is known for example from French patent No. 8701545.
  • a problem to be solved in this type of circuit breaker is that the pressure remains low in the blowing cylinder for cutting small cutlery (low operating energy) and that the pressure is high for cutting large currents without increasing the maneuvering energy.
  • the circuit breaker described in the aforementioned document has drawbacks, however.
  • the maximum separation distance of the secondary contacts is as long as the separation distance of the arcing contacts so that the secondary arc stretches for a long time, which leads to strikes on the walls. of the chamber containing the secondary contacts.
  • a first object of the invention is to provide a circuit breaker in which no ignition due to the secondary arc.
  • Another object of the invention is to provide a circuit breaker in which no arc strikes upon switching on.
  • the subject of the invention is a high-voltage circuit breaker with pressurized dielectric gas, of the type comprising at least one breaking chamber comprising an insulating envelope filled with said gas inside which are placed an assembly comprising a fixed main contact and a fixed arcing contact, a movable assembly comprising in particular a movable main contact and a movable arcing contact, the interrupting chamber further comprising a blowing cylinder opening into a blowing nozzle, said circuit breaker comprising a pair of secondary contacts, characterized in that it comprises first means for limiting the maximum distance of separation of the secondary contacts to a value less than the maximum distance of separation of the arcing contacts and second means for preventing any initiation on engagement.
  • Figure 1 shows a breaking chamber comprising an envelope 1, of insulating material such as ceramic, filled with a dielectric gas such as sulfur hexafluoride under a pressure of a few bars.
  • an assembly comprising a fixed main contact formed by contact fingers 2 protected by a corona hood 3 and an arcing contact formed by a metal tube 4 terminated by one end 4A alloy resistant to the effects of the arc.
  • the moving element comprises a metal tube 5 serving as a moving arcing contact, terminated by a tip 5A made of an alloy resistant to the effects of the arcing.
  • the tube 5 is driven by a metal tube 6, for example made of aluminum, fixed to an operating rod, not shown. Tubes 5 and 6 are not attached to each other; on the contrary, a certain clearance between them is possible; the drive is done by two steps 5B and 6B of the tubes 5 and 6. The travel is limited by a stop 6C.
  • a metal tube 7, concentric with the tube 5, serves as a movable main contact.
  • blowing nozzle 8 made of insulating material. It is in electrical contact with a metal block 9, made of aluminum for example, secured to the fixed assembly, by contact fingers 10.
  • the tube 5 and the tube 7 are joined by an insulating ring 12, pierced with holes 12A.
  • the volume 20 delimited by the tubes 5 and 7 is closed by a fixed piston 14, made of an insulating material such as polytetrafluoroethylene, held in place by a metal tube 15 fixed to the block 9.
  • the volume delimited by the tubes 5 and 7, the ring 12 and the piston 14 is designated by 20. This volume constitutes the blow-out cylinder of the circuit breaker.
  • the piston 14 is pierced with orifices 16 and includes a valve 17 authorizing the passage of gas only from the outside to the inside of the volume 20.
  • the piston 14 comprises a seal 18 and a guide 19.
  • the orifices 16 of the piston 14 can be obstructed by an annular piston 22, which can slide in the annular space formed by the tube 5 and a cylindrical extension 23, pierced with holes 23A, of the piston 14.
  • the annular piston 22 is pushed against the orifices 16 by a spring 24 pressing against an integral part of the fixed tube 15.
  • the piston is sealed by seals 26 and 27.
  • a pair of auxiliary contacts includes: a fixed tubular contact 30, provided with an end 30A of arc-resistant material, and fixed to the tube 15, - a tubular contact 31, provided with a wear end 31A, fixed to a guide block made of insulating material 32, and provided with sliding contacts 31B cooperating with the tube 5.
  • the insulating block is guided in the annular space between the tubes 5 and 15 thanks to a portion 32A coming to bear against the tube 15.
  • This portion is provided with orifices 33 to allow the free passage of the gas in the volume 35 comprised between the tube 15 and the parts 31, 32 and 42.
  • the insulating part 32 is provided with a latching system, for example with balls 36 and springs 37, cooperating with grooves 38 and 39 formed in the tube 5.
  • a stop 40 of the tube 15 limits the stroke of the insulating part 32 .
  • the volume 35 is closed by an insulating piston 42, fixed to the tube 5 and having a guide segment 43 and a valve 44 allowing the passage of gas only from the outside to the inside of the volume 35.
  • the tube 5 has holes 46 at its end.
  • the tube 6 has holes 47.
  • the part 9 carries a contact 48 cooperating with one end 49 of the tube 5 to place the tube 5 at the same potential as the rest of the moving assembly at the end of the opening stroke.
  • the circuit breaker works as follows.
  • the vacuum generated in the volume 35 causes the valve 44 to open and the pressure in the volume 35 to be maintained. There is therefore no loss in suction.
  • the arc 60 which is established between the contacts 30 and 31 either at the same time as the arc 50, either slightly before or slightly after, creates a sufficiently low overpressure so as not to disturb this operation.
  • the current passes through contact 4, arc 50, tube 5, contacts 31B, contact 31, arc 60, contact 30 , the tube 15 and the part 9.
  • the part 32A After a certain stroke, determined as a function of the short-circuit current, the part 32A abuts on the stop 40.
  • the tube 5 continuing its stroke, the balls 36 leave the groove 39 and come to be positioned on the groove 38 (FIG. 3) at the end of the opening maneuver and the slight overpressure of the volume 20 disappears thanks to the holes 23A; the piston 22 comes into abutment against the fixed piston 14.
  • the contact 48 puts the end 49 of the tube 5, and therefore the contact 31, at the potential of the part 9, of the tube 15 and therefore of the contact 30.
  • the maximum separation distance of the secondary contacts remains less to that of the arcing contacts, so that no risk of ignition due to excessive stretching of the secondary arcing is to be feared.
  • the tube 6 is actuated to the left of the figure ( Figure 4).
  • the stop 6C drives the tube 5 and the contacts 30 and 31 come into contact, without creating an arc since they are at the same potential thanks to the contact of the parts 48 and 49.
  • the slight overpressure in the volume 35 is evacuated, by the holes 46 and 47 which come into coincidence, towards the volume 70 inside the tube 5.
  • Figure 5 shows the circuit breaker being opened by moving the tube 6 to the right of the figure.
  • the arc 60 causes rapid heating of the volume 35 and of the volume 35B surrounded by the contacts 30, 31 the piston 22 and the cylinder 5.
  • the increase in pressure has two effects: -
  • the first effect is to press the piston 22 against the piston 14 and thus close any communication between the volume 35B and the volume 20.
  • the increasing pressure in the volume 20 promotes the extinction of the primary arc 50 by a favored self-blowing by the reduction in size of the volume 20 due to the displacement of the moving element 5, 7, relative to the fixed piston 14.
  • the second effect is to exert pressure on the insulating piston 42 and thus make a contribution to the energy of maneuver.
  • the hot gas of volume 35 passes through the orifices 33 of the part 32A.
  • FIG. 6 shows an alternative embodiment.
  • the elements common to this figure and to the preceding figures have been given the same reference numbers.
  • the insulating tube 103 is advantageously provided with grooves parallel to the axis of the circuit breaker which channel the secondary arc.
  • the first secondary contact 105 provided with a wearing part 105 A is integral with the tube 15; the second secondary contact 106, provided with a wearing part 106 A, is movable relative to the tube 101 and extended by a tubular part 107 itself connected to an operating rod of the circuit breaker not shown.
  • the contact 106 has a solid part 106 C provided with radial orifices 108 which, when the circuit breaker is closed (position in FIG. 6), are in coincidence with the bores 102.
  • the part 106C has sliding electrical contacts 106B cooperating with the part 101.
  • a stop 109 such as a circlip, integral with the rod 107, abuts against the part 101 during an engagement maneuver.
  • the movable main contact 7 carries sliding electrical contacts 110 ensuring the passage of current through the part 15 which, as before, is connected to one of the sockets of the circuit breaker.
  • a stop 111 limits the travel of the moving part to the engagement; as in FIGS. 1 to 5, the chamber 35 is closed by an insulating piston 42 provided with a guide segment 43 and a valve 44.
  • the circuit breaker works as follows: - In the closed position, the current flows through the fingers 2, the tube 7, the contacts 110 and the tube 15; the orifices 102 and 108 are in coincidence, - at the opening of the circuit breaker (tripping), the tube 107 is pulled to the right of the figure and it drives the contact 106 whose massive part 106A first closes the orifices 102, then drives the part 102 and consequently arcing contact 5.
  • the arc appears at about the same time on the arcing contacts and on the secondary contacts.
  • the circuit breaker of the invention requires only a low operating energy for all the current values to be cut.
  • the number of elements is low and they are all of revolution which ensures an economical construction and an easy and fast assembly. Its design eliminates any risk of priming.

Landscapes

  • Circuit Breakers (AREA)
  • Lasers (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Electronic Switches (AREA)
  • Organic Insulating Materials (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP89104558A 1988-03-23 1989-03-15 Hochspannungsschalter mit geringer Antriebsenergie Expired - Lifetime EP0334181B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89104558T ATE99829T1 (de) 1988-03-23 1989-03-15 Hochspannungsschalter mit geringer antriebsenergie.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8803803 1988-03-23
FR8803803A FR2629260B1 (fr) 1988-03-23 1988-03-23 Disjoncteur a haute tension a faible energie de manoeuvre

Publications (2)

Publication Number Publication Date
EP0334181A1 true EP0334181A1 (de) 1989-09-27
EP0334181B1 EP0334181B1 (de) 1994-01-05

Family

ID=9364564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104558A Expired - Lifetime EP0334181B1 (de) 1988-03-23 1989-03-15 Hochspannungsschalter mit geringer Antriebsenergie

Country Status (9)

Country Link
US (1) US4945198A (de)
EP (1) EP0334181B1 (de)
JP (1) JP2577080B2 (de)
CN (1) CN1017578B (de)
AT (1) ATE99829T1 (de)
BR (1) BR8901362A (de)
CA (1) CA1309443C (de)
DE (1) DE68911962T2 (de)
FR (1) FR2629260B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661550A1 (fr) * 1990-04-26 1991-10-31 Alsthom Gec Disjoncteur a haute tension a arc serie.
EP0554686A1 (de) * 1992-02-06 1993-08-11 GEC Alsthom T&D AG Druckgasschalter
FR2691575A1 (fr) * 1992-05-25 1993-11-26 Alsthom Gec Disjoncteur à haute tension à non passages par zéro du courant.
EP0779638A1 (de) * 1995-12-14 1997-06-18 Gec Alsthom T & D Sa Hochspannungslastschalter mit geringer Antriebsenergie
US6207918B1 (en) 1996-07-10 2001-03-27 Siemens Aktiengesellschaft Compressed gas power switch

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647255B1 (fr) * 1989-05-17 1993-04-23 Alsthom Gec Disjoncteur a haute tension a gaz dielectrique de soufflage
FR2764728B1 (fr) * 1997-06-12 1999-09-24 Gec Alsthom T & D Sa Disjoncteur a resistance de fermeture
FR2947377B1 (fr) * 2009-06-29 2011-07-22 Areva T & D Sa Valve a clapet de decharge destinee a decharger un gaz dielectrique entre deux volumes d'une chambre de coupure de disjoncteur haute ou moyenne tension
CN101930871B (zh) * 2010-08-25 2012-11-21 中国西电电气股份有限公司 一种高压开关设备用高载流能力灭弧室
CN106575584B (zh) * 2014-06-13 2019-05-03 Abb瑞士股份有限公司 断续器驱动式电阻器开关组件

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR814518A (fr) * 1936-02-27 1937-06-24 Alsthom Cgee Perfectionnements apportés aux interrupteurs électriques
DE2349263A1 (de) * 1973-10-01 1975-04-03 Bbc Brown Boveri & Cie Elektrischer schalter
GB1596867A (en) * 1978-05-30 1981-09-03 Aei Gas blast switches and circuit interrupters
DE3224778A1 (de) * 1981-03-30 1982-12-30 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Hochspannungsschaltkammer mit hilfslichtbogen
FR2535518A1 (fr) * 1982-10-28 1984-05-04 Alsthom Atlantique Chambre de coupure pour disjoncteur a gaz
DE3344094A1 (de) * 1983-12-02 1985-06-13 Siemens AG, 1000 Berlin und 8000 München Elektrischer druckgasschalter
FR2576142A1 (fr) * 1985-01-16 1986-07-18 Alsthom Atlantique Disjoncteur a haute tension, a gaz comprime, a energie de manoeuvre assistee par l'effet thermique de l'arc

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2521262B2 (ja) * 1986-07-07 1996-08-07 株式会社日立製作所 パツフア式ガス遮断器
FR2610763B1 (fr) * 1987-02-09 1989-04-28 Alsthom Disjoncteur a faible energie de manoeuvre
FR2619246B1 (fr) * 1987-08-03 1989-11-17 Alsthom Disjoncteur a haute ou moyenne tension a gaz sous pression a energie de coupure prelevee sur celle de l'arc

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR814518A (fr) * 1936-02-27 1937-06-24 Alsthom Cgee Perfectionnements apportés aux interrupteurs électriques
DE2349263A1 (de) * 1973-10-01 1975-04-03 Bbc Brown Boveri & Cie Elektrischer schalter
GB1596867A (en) * 1978-05-30 1981-09-03 Aei Gas blast switches and circuit interrupters
DE3224778A1 (de) * 1981-03-30 1982-12-30 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Hochspannungsschaltkammer mit hilfslichtbogen
FR2535518A1 (fr) * 1982-10-28 1984-05-04 Alsthom Atlantique Chambre de coupure pour disjoncteur a gaz
DE3344094A1 (de) * 1983-12-02 1985-06-13 Siemens AG, 1000 Berlin und 8000 München Elektrischer druckgasschalter
FR2576142A1 (fr) * 1985-01-16 1986-07-18 Alsthom Atlantique Disjoncteur a haute tension, a gaz comprime, a energie de manoeuvre assistee par l'effet thermique de l'arc

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661550A1 (fr) * 1990-04-26 1991-10-31 Alsthom Gec Disjoncteur a haute tension a arc serie.
EP0456025A1 (de) * 1990-04-26 1991-11-13 Gec Alsthom Sa Hochspannungsschalter mit Hilfslichtbogen in Reihe
US5160818A (en) * 1990-04-26 1992-11-03 Gec Alsthom Sa Series-arc high tension circuit-breaker
EP0554686A1 (de) * 1992-02-06 1993-08-11 GEC Alsthom T&D AG Druckgasschalter
FR2691575A1 (fr) * 1992-05-25 1993-11-26 Alsthom Gec Disjoncteur à haute tension à non passages par zéro du courant.
EP0779638A1 (de) * 1995-12-14 1997-06-18 Gec Alsthom T & D Sa Hochspannungslastschalter mit geringer Antriebsenergie
FR2742576A1 (fr) * 1995-12-14 1997-06-20 Gec Alsthom T & D Sa Disjoncteur a haute tension a energie de manoeuvre reduite
US6207918B1 (en) 1996-07-10 2001-03-27 Siemens Aktiengesellschaft Compressed gas power switch

Also Published As

Publication number Publication date
JPH02148526A (ja) 1990-06-07
JP2577080B2 (ja) 1997-01-29
ATE99829T1 (de) 1994-01-15
DE68911962D1 (de) 1994-02-17
BR8901362A (pt) 1989-11-07
FR2629260A1 (fr) 1989-09-29
US4945198A (en) 1990-07-31
DE68911962T2 (de) 1994-04-28
CA1309443C (fr) 1992-10-27
CN1017578B (zh) 1992-07-22
CN1036659A (zh) 1989-10-25
FR2629260B1 (fr) 1994-07-08
EP0334181B1 (de) 1994-01-05

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