EP0302390B1 - Druckgasschalter für Hoch- oder Mittelspannung mit von der Lichtbogenenergie entnommener Ausschaltenergie - Google Patents
Druckgasschalter für Hoch- oder Mittelspannung mit von der Lichtbogenenergie entnommener Ausschaltenergie Download PDFInfo
- Publication number
- EP0302390B1 EP0302390B1 EP88112228A EP88112228A EP0302390B1 EP 0302390 B1 EP0302390 B1 EP 0302390B1 EP 88112228 A EP88112228 A EP 88112228A EP 88112228 A EP88112228 A EP 88112228A EP 0302390 B1 EP0302390 B1 EP 0302390B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- arc
- contacts
- circuit breaker
- auxiliary
- piston
- 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.)
- Expired - Lifetime
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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 or medium voltage circuit breaker with pressurized dielectric gas, the breaking energy of which is, for the breaking of high currents, partially drawn from that of the arc.
- Circuit breakers comprising a arc blowing piston, the operating energy of which is provided at least partially by the gas, the pressure of which increases under the effect of the temperature increase produced by the arc.
- circuit breaker is for example described in American patent 3,985,988.
- An object of the invention is to provide a circuit breaker with arc blowing by piston, in which a second arc, increasing the force exerted on the piston, is only established when the current to be cut is large (short current -circuit for example) this auxiliary arc is not established when the current to be cut is low (inductive current, no-load breaking).
- German patent DE-C-1029449 describes an oil circuit breaker which, in order to limit the maximum possible pressure inside the device, does not authorize the separation of the auxiliary contacts only when the pressure in the blowing zone is less than a predetermined threshold.
- the circuit breaker of Figure 1 comprises an outer casing 1, made of ceramic delimiting a volume 2 filled with a dielectric gas such as sulfur hexafluoride, under a pressure of a few bars.
- a dielectric gas such as sulfur hexafluoride
- a metal part comprising a first cylindrical portion 5a coaxial with the envelope, a disc part 5b perpendicular to the axis 6 of the envelope and a second cylindrical part 5c of diameter less than the diameter of the part 5a.
- the disc part comprises preferably circular orifices 5d, regularly distributed towards the edge of the disc, for example three orifices at 120 degrees from one another.
- the cylindrical part 5c has a thicker end 5e pierced with orifices 5f converging towards the axis 6.
- the part 8 carries orifices 8b in coincidence with the orifices 5f to define blowing passages.
- the orifices 5d pass rods 9 fixed by a first end to a ring 10 sliding in the cylinder 5a and pushed by a spring 11 bearing on the flange.
- the second end of the rods 9 carries a piston 12 which is extended on the one hand by a metal cylinder 13 surrounding the cylinder 5a, on the other hand by an insulating cylinder 14 terminated by a bulged part 14a.
- Parts 12, 14, 5c and 8 define a volume V1.
- the cylinder 5a is extended by a metal part 15 provided with an annular portion 16 constituting a fixed piston sliding along the cylinder 13.
- the volume delimited by the parts 16, 13, 12, 5c and 5b is designated by V2.
- the pistons 12 and 16 are pierced with orifices referenced respectively 12a and 16a associated with movable valves 12b and 16b.
- a metal tube 18 terminated by an annular shoulder 18a.
- a cylindrical assembly comprising a first metal cylinder 19 extended by a second insulating cylinder 20 itself extended by a third metal cylinder 21, terminated by an end 21a of metal or alloy resistant to arc wear and constituting one of the main arcing contacts.
- the cylinder 21 extends from the side opposite the end 21a by a cylindrical part external to the cylinder 20 and terminated by a portion 21c constituting one of the auxiliary arcing contacts.
- the other auxiliary arcing contact is a metal part 22 pushed by a spring 23 bearing on the shoulder 18a, provided with a resistant end 22a.
- the cylinder 5c has, at the right of the auxiliary arcing contacts, large openings 18b.
- An insulating cylinder 24 is fixed to the contact 23. This cylinder has openings 24a putting the contact area 21c, 22a in connection with the volume V2 through the openings 18b.
- the cylinder 24 has an annular part 24b provided with a sliding contact closing the volume V2 by sliding on the cylinder 22.
- the end of the cylinder 24 has a bulged portion 24c closing the annular space between the cylinders 21 and 5c and constituting a piston.
- the section of this annular space is greater than the section between the part 21 and the end of the part 5e.
- the mobile assembly of the circuit breaker comprises a tube 25 with an end 25a resistant to the arc and constituting the movable main arc contact, as well as fingers 26 associated with springs 27 and protected by a cover 28 and constituting the main contact. fixed.
- the movable contacts 25 and 26 are connected as is well known to a second outlet not shown.
- the cover 28 pushes the part 14, which causes the compression of the spring 11.
- the main contacts 26 and 8a ensure the passage of the permanent current through the socket 4, the flange 3, the cylindrical part 5a, 5b, 5c, 5e, contact 8a and contact 26.
- the main arcing contacts 25a-21a and the auxiliary arcing contacts 22a-21c are in contact, the spring 23 can be slack or bandaged.
- the circuit breaker works as follows:
- the moving part is moved by the operating rod down the figure.
- the movement causes the separation of the auxiliary arcing contacts 22a and 21c, causing the creation of a secondary arcing; the current then flows through parts 4, 3, 5a, 5d, 18, 18a, 19, 22, arc 31, 21c, 21, 21a, arc 30, 25a and 25.
- the arc 31 causes a strong rise in the pressure in the volume V2, which increases the pressure on the piston 12 which, acting on the large surface S4 thus contributes to increasing the blowing of the primary arc 30 by the gas of volume V1.
- valve 12b remains closed, since it has a larger surface on the side of the volume V1 than on the side of the volume V2.
- the valve 16b opens and prevents a depression of the volume V2.
- the arc 30 has insufficient energy for the increase in pressure it generates to be sufficient to move the part 24 against the action of the spring.
- the energy contained in the spring 11 is sufficient to ensure, by its action on the piston 12, a correct blowing of the arc 30.
- Decompression holes 21b in the part 21 and 18b in the part 18 make it possible to equalize the pressures and reduce the energy required to close the circuit breaker.
- the current threshold to be cut from which the secondary arc is established is adjusted by the force of the spring 23.
- blowing piston and the auxiliary arcing contacts belong to the fixed parts of the circuit breaker.
- FIG. 3 represents a circuit breaker in which the blowing piston and the auxiliary arcing contacts belong to the mobile assembly.
- FIGS. 1 and 3 The elements functionally common in FIGS. 1 and 3 have been given the same reference numbers.
- the spring 11 now rests in a groove 5g of the part 5a-5b-5c which is guided in a fixed tube 33.
- the blowing piston 12 is not coupled to the movable contact.
- the mass of the moving part being greater than that of the moving part of the circuit breaker according to FIG. 1, the solution of FIG. 1 will often be preferred to that of FIG. 3.
- pre-striking may occur for high nominal voltages during the closing (closing) phase of the circuit breaker.
- Pre-ignition causes the opening of the secondary arcing contacts, causing an arcing which increases the pressure in the volume V2. It is therefore necessary to provide a means of evacuating the gas from this volume to volume V1, failing which the closing of the circuit breaker could not take place.
- FIG 4 is a partial view of the circuit breaker of the invention, in which the elements common to Figures 1 and 4 have been given the same reference numbers.
- the circuit breaker has the following characteristics: the cylinder 14 is made movable relative to the cylinder 13 by means of a spring 40 which is supported on a step 13a of the part 13.
- the cylinder 13 is pierced with radial holes 13b; it is the same for the part 14, which has radial orifices 14b, situated so that, by the relative sliding of the parts 13 and 14, the orifices 13b can come into coincidence with the orifices 14b.
- the holes 13b and 14b are also located relative to each other so that when the circuit breaker is open or being opened ( Figure 4), these holes are not in coincidence, which leaves the volume V2 closed.
- the stroke of the part 14 can be limited by a pin 13c secured to the cylinder 13 cooperating with a light 14c of the part 14.
- Figure 6 is a partial view in axial half-section of a circuit breaker according to an alternative embodiment.
- auxiliary contact 22 and the part 24 are fixed and integral with the part 5a.
- the second auxiliary contact, now referenced 45 slides in a housing 24c of the part 24, under the action of a piston 46, one face 46a of which is placed in communication with the zone of the main arc by grooves.
- a spring 47 allows the contact 45 to be recalled.
- the latter is provided with sliding contacts 45a ensuring the passage of current between the contact 45 and the main arcing contact.
Landscapes
- Circuit Breakers (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Gas-Insulated Switchgears (AREA)
Claims (6)
- Hoch- oder Mittelspannungs-Druckgasschalter, bei dem Energie zum Abschalten des Stroms dem Lichtbogen entnommen wird und der folgende Komponenten aufweist:- eine feststehende Baugruppe, die Hauptkontakte (8a) und Lichtbogenkontakte (21a) aufweist,- eine bewegliche Baugruppe, die Hauptkontakte (26) und Lichtbogenkontakte (25) aufweist,- ein Blasvolumen (V1) mit einem Kolben (12), der sich bei der Trennung der Kontakte verschiebt und Druckgas durch eine Blasdüse (7) treibt, die sich zu der Zone hin öffnet, in der sich bei der Trennung der Kontakte ein Hauptlichtbogen bildet, und- einen Satz Hilfskontakte (22a, 21c), die in Reihe mit den Lichtbogenkontakten angeordnet sind, um einen Hilfslichtbogen in dem hinter dem Kolben gelegenen Volumen (V2) zu erzeugen, dadurch gekennzeichnet, daß der Schalter Mittel (23, 24) aufweist, die die Trennung der Hilfskontakte (22a, 21c) nur dann erlauben, wenn der Druck in der Blaszone über einen vorbestimmten Schwellenwert hinaus ansteigt.
- Schalter nach Anspruch 1, dadurch gekennzeichnet, daß die Mittel einen Kolben (24c), der mit einem der Hilfskontakte (22a) fest verbunden und dem Druck der Hauptlichtbogenzone ausgesetzt ist, und eine Rückholzfeder (23) für den Hilfskontakt aufweisen.
- Schalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Hilfskontakte (22a, 21c) zur Gruppe der feststehenden Bauelemente gehören.
- Schalter noch Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Hilfskontakte (22a, 21c) zur Gruppe der beweglichen Bauelemente gehören.
- Schalter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das hinter dem Kolben befindliche Volumen (V2) mindestens eine Öffnung (13b) aufweist, die einem Schließmittel (14, 40) zugeordnet ist, das diese Öffnung beim Auslösen des Schalters schließt.
- Schalter nach Anspruch 5, dadurch gekennzeichnet, daß das Schließmittel einen Zylinder (14) aufweist, der mit einen Schlitz (14c) versehen und mit der beweglichen Baugruppe durch eine Feder (40) verbunden ist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88112228T ATE77512T1 (de) | 1987-08-03 | 1988-07-28 | Druckgasschalter fuer hoch- oder mittelspannung mit von der lichtbogenenergie entnommener ausschaltenergie. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8710988 | 1987-08-03 | ||
FR8710988A FR2619246B1 (fr) | 1987-08-03 | 1987-08-03 | Disjoncteur a haute ou moyenne tension a gaz sous pression a energie de coupure prelevee sur celle de l'arc |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0302390A1 EP0302390A1 (de) | 1989-02-08 |
EP0302390B1 true EP0302390B1 (de) | 1992-06-17 |
Family
ID=9353822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88112228A Expired - Lifetime EP0302390B1 (de) | 1987-08-03 | 1988-07-28 | Druckgasschalter für Hoch- oder Mittelspannung mit von der Lichtbogenenergie entnommener Ausschaltenergie |
Country Status (10)
Country | Link |
---|---|
US (1) | US4880946A (de) |
EP (1) | EP0302390B1 (de) |
JP (1) | JPH061656B2 (de) |
CN (1) | CN1014193B (de) |
AT (1) | ATE77512T1 (de) |
BR (1) | BR8803823A (de) |
CA (1) | CA1295003C (de) |
DE (1) | DE3872090T2 (de) |
ES (1) | ES2032908T3 (de) |
FR (1) | FR2619246B1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2629260B1 (fr) * | 1988-03-23 | 1994-07-08 | Alsthom | Disjoncteur a haute tension a faible energie de manoeuvre |
FR2639147B1 (fr) * | 1988-09-16 | 1990-12-14 | Alsthom Gec | Disjoncteur a haute tension a gaz dielectrique utilise pour le soufflage |
FR2647255B1 (fr) * | 1989-05-17 | 1993-04-23 | Alsthom Gec | Disjoncteur a haute tension a gaz dielectrique de soufflage |
FR2647949B1 (fr) * | 1989-05-31 | 1994-02-18 | Gec Alsthom Sa | Disjoncteur a haute tension a gaz dielectrique de soufflage |
FR2649531B1 (fr) * | 1989-07-04 | 1995-11-10 | Alsthom Gec | Disjoncteur a haute ou moyenne tension |
FR2661550B1 (fr) * | 1990-04-26 | 1992-06-12 | Alsthom Gec | Disjoncteur a haute tension a arc serie. |
FR2668648B1 (fr) * | 1990-10-24 | 1992-12-24 | Alsthom Gec | Disjoncteur a sf6 a condensateur incorpore. |
EP0508160B1 (de) * | 1991-04-12 | 1994-12-14 | GEC Alsthom T&D AG | Druckgasschalter |
FR2679696B1 (fr) * | 1991-07-24 | 1993-09-24 | Alsthom Gec | Disjoncteur a haute et moyenne tension a gaz de soufflage. |
EP0554686B1 (de) * | 1992-02-06 | 1996-07-03 | GEC Alsthom T&D AG | Druckgasschalter |
FR2691575B1 (fr) * | 1992-05-25 | 1994-07-01 | Alsthom Gec | Disjoncteur a haute tension a non passages par zero du courant. |
CN110914947B (zh) * | 2017-07-31 | 2021-12-28 | 通用电器技术有限公司 | 设置有吹弧单元的电气开关 |
CN112968653A (zh) | 2021-01-29 | 2021-06-15 | 中国第一汽车股份有限公司 | 一种电驱系统及车辆 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1029449B (de) * | 1957-01-17 | 1958-05-08 | Licentia Gmbh | Hochspannungsschalter mit zwei innerhalb einer Loeschkammer hintereinander-geschalteten Kontaktstellen |
DE2349263C2 (de) * | 1973-10-01 | 1982-08-26 | Brown, Boveri & Cie Ag, 6800 Mannheim | Elektrischer Druckgasschalter |
DE2710051A1 (de) * | 1976-06-24 | 1978-01-05 | Sprecher & Schuh Ag | Druckgasschalter |
FR2593636B1 (fr) * | 1986-01-29 | 1988-03-18 | Cegelec | Disjoncteur a hexafluorure de soufre fonctionnant dans un environnement a tres basse temperature |
-
1987
- 1987-08-03 FR FR8710988A patent/FR2619246B1/fr not_active Expired
-
1988
- 1988-07-21 US US07/222,641 patent/US4880946A/en not_active Expired - Fee Related
- 1988-07-28 ES ES198888112228T patent/ES2032908T3/es not_active Expired - Lifetime
- 1988-07-28 AT AT88112228T patent/ATE77512T1/de not_active IP Right Cessation
- 1988-07-28 EP EP88112228A patent/EP0302390B1/de not_active Expired - Lifetime
- 1988-07-28 DE DE8888112228T patent/DE3872090T2/de not_active Expired - Fee Related
- 1988-07-29 CA CA000573450A patent/CA1295003C/fr not_active Expired - Fee Related
- 1988-08-01 JP JP63192585A patent/JPH061656B2/ja not_active Expired - Lifetime
- 1988-08-02 CN CN88104784A patent/CN1014193B/zh not_active Expired
- 1988-08-02 BR BR8803823A patent/BR8803823A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN1014193B (zh) | 1991-10-02 |
EP0302390A1 (de) | 1989-02-08 |
DE3872090D1 (de) | 1992-07-23 |
DE3872090T2 (de) | 1992-12-03 |
BR8803823A (pt) | 1989-02-21 |
CA1295003C (fr) | 1992-01-28 |
US4880946A (en) | 1989-11-14 |
ATE77512T1 (de) | 1992-07-15 |
FR2619246B1 (fr) | 1989-11-17 |
ES2032908T3 (es) | 1993-03-01 |
FR2619246A1 (fr) | 1989-02-10 |
CN1031153A (zh) | 1989-02-15 |
JPS6459732A (en) | 1989-03-07 |
JPH061656B2 (ja) | 1994-01-05 |
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