EP0135789B1 - Sectionneur haute tension, en particulier sectionneur monocolonne, capable de commuter des courants - Google Patents
Sectionneur haute tension, en particulier sectionneur monocolonne, capable de commuter des courants Download PDFInfo
- Publication number
- EP0135789B1 EP0135789B1 EP84109850A EP84109850A EP0135789B1 EP 0135789 B1 EP0135789 B1 EP 0135789B1 EP 84109850 A EP84109850 A EP 84109850A EP 84109850 A EP84109850 A EP 84109850A EP 0135789 B1 EP0135789 B1 EP 0135789B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- equipment
- countercontact
- isolating switch
- switching
- 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
Links
Images
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
- H01H31/34—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact adapted to engage an overhead transmission line, e.g. for branching
- H01H31/36—Contact moved by pantograph
-
- 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
Definitions
- the invention relates to a high-voltage isolating switch with movable main contact pieces arranged at the ends of a pair of scissors that can be moved in the vertical direction, a main contact piece that is fixedly mounted on the conductor cable of the high-voltage line as a counter-contact piece, and preliminary contacts.
- This high-voltage disconnector is relatively low, namely that of the main contact pieces as well as the pre-contact pieces. It is therefore only a shift of the erosion to the pre-contact pieces. The erosion itself can not be reduced by the low switching speed, so that the life of the pre-contact pieces is limited.
- switch disconnectors with main contacts and contacts which open after the main contacts for tearing off the arc are known.
- an energy store is charged during the final shutdown in order to release the contact pieces after a certain stroke in order to break the arc, which then snap back into their starting position.
- the installation of gas-emitting material for extinguishing the arc is also known from these documents.
- the object of the invention is to make available a high-voltage isolating switch in which, when switched off, the contact pieces of the pre-contact system separate at a predetermined speed, regardless of the speed of the main contact pieces.
- the high-voltage circuit breaker proposed by the subsequently published EP-A-0104599 (which contains a prior art in accordance with Art. 54 (3) EPC, since the priority date of the corresponding application lies before that of the application on which the present patent is based), which has the features of Sections a) to d) of claim 1 further developed.
- the advantage of the invention is that the conditions for the interruption of the currents are optimized and the contact erosion is reduced.
- the first contact device mentioned in section e of claim 1 is designed in such a way that, even with slow movement, it quickly comes from the state of the first contact with the contact load 0 to the state of full current carrying capacity with a corresponding contact load. This causes no problems when switching on the isolator due to the slow ("creeping") switching on of the contacts of the second contact device mentioned in section e of claim 1, since the first contact device switches on the circuit just before the contacts of the second contact device touch and so on protects the contacts of the second contact device from scorching.
- FIGS. 1 and 2 which essentially consists of a porcelain column 1 and a scissors 2 that can be moved in the vertical direction with the main contact pieces 3a, 3b, two pliers-like contacts are provided on the upper mating contact 4 fixedly attached to the conductor cable 5 about a fastening point 10 pivotable contact bracket 6a, 6b arranged, which are held by the force of a spring 7 in a spread position at a certain distance from the counter contact 4 by the force of a spring.
- the contact pieces 8b of the additional switching contacts 8 forming the pre-contact system are arranged on the ends of the crossed levers 11, 11 'formed on the pivotable contact brackets 6a, 6b, facing away from the main contact pieces 3a, 3b.
- the contact pieces 8a of the additional switching contacts 8 carried by the counter-contact piece 4 are arranged on a common contact carrier 30 between the crossed levers 11, 11 'such that they are contacted by the contact pieces 8b of the additional switching contacts 8 carried by these levers 11, 11', when switching on the main contact pieces 3a, 3b causes the contact bracket 6a, 6b and thus the crossed levers 11, 11 'to pivot towards each other.
- the switching contacts 8 forming the pre-contact system When switching on, against the spring force in the switching device accommodated under a hood 9, the switching contacts 8 forming the pre-contact system, which can be single or double, are closed before the Main contacts 3a, 3b and 4 of the disconnector touch.
- the spring 7 between the contact brackets 6a, 6b which can be pivoted like pliers about the attachment point 10, ensures that these follow the moving main contacts 3a, 3b of the scissors 2 and thereby the separation of the switching contacts 8 after the main contacts 3a, 3b have separated with the subsequent arc quenching in the extinguishing tube 12.
- FIGS. 3, 3a and 3b show a pre-contact system which replaces the switching contacts 8a and 8b in FIG. 2. This results in the embodiment according to the invention.
- Fig. 3 shows the pre-contact system in the closed position. If the main contacts (not shown) carry current in the switched-on position of the disconnector, the likewise closed contacts of a first 15, 16 and second contact device 13, 14 which form the pre-contact system are electrically parallel to the main contacts. When the disconnector is opened after the main contacts mentioned have separated, the current essentially initially shifts to the still closed first contact device with the elastic contact fingers 15 and the movable contact piece 16. After a short stroke, the first contact device 15, 16 also separates ( Fig.
- the circuit is closed by the first contact device 15, 16, after the contact fingers 15 slide over a conical ramp 25 made of insulating material in the course of the switch-on movement, whereby they receive the pretension required for the required contact load, and finally in contact with the Contact path of the contact piece 16 arrive (Fig. 3). Only after this contact has been made does the tear-off pin 13 located inside the extinguishing tube 23 come into contact with the contact 14, so that no welding can occur here.
- An electrically high-quality plastic with a low coefficient of friction such as e.g. an acetal resin can be used.
- a copper alloy with good erosion resistance can be used as the contact surface for the contact piece 16.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Mechanisms For Operating Contacts (AREA)
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84109850T ATE44422T1 (de) | 1983-08-27 | 1984-08-18 | Hochspannungstrennschalter, insbesondere einsaeulen-trennschalter, zum schalten kommutierender stroeme. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3331024A DE3331024A1 (de) | 1983-08-27 | 1983-08-27 | Hochspannungstrennschalter, insbesondere einsaeulen-trennschalter, zum schalten kommutierender stroeme |
DE3331024 | 1983-08-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0135789A2 EP0135789A2 (fr) | 1985-04-03 |
EP0135789A3 EP0135789A3 (en) | 1986-10-29 |
EP0135789B1 true EP0135789B1 (fr) | 1989-07-05 |
Family
ID=6207654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84109850A Expired EP0135789B1 (fr) | 1983-08-27 | 1984-08-18 | Sectionneur haute tension, en particulier sectionneur monocolonne, capable de commuter des courants |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0135789B1 (fr) |
AT (1) | ATE44422T1 (fr) |
DE (2) | DE3331024A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3709664A1 (de) * | 1987-03-24 | 1988-10-06 | Bbc Brown Boveri & Cie | Mehrstellungs-kommutierungstrenner fuer hoch- und mittelspannungs-schaltanlagen |
FR2674678B1 (fr) * | 1991-03-29 | 1996-09-20 | Const Electro Meca Ste D | Sectionneur haute-tension apte a etablir et a couper les courants de transfert de barres dans un circuit en boucle. |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE946638C (de) * | 1951-04-06 | 1956-08-02 | Sachsenwerk Licht & Kraft Ag | Schubtrennschalter fuer zusaetzliche Lastabschaltung |
DE1240973B (de) * | 1958-11-15 | 1967-05-24 | Sachsenwerk Licht & Kraft Ag | Lasttrennschalter |
DE1240158B (de) * | 1960-12-10 | 1967-05-11 | Sachsenwerk Licht & Kraft Ag | Lasttrennschalter |
DE1941383C3 (de) * | 1969-08-14 | 1974-08-22 | Felten & Guilleaume Schaltanlagen Gmbh, 4150 Krefeld | Lasttrennschalter mit gasabgebender Rohrlöschkammer |
DE2809499A1 (de) * | 1978-03-06 | 1979-09-13 | Licentia Gmbh | Hochspannungstrennschalter |
DE2907574C2 (de) * | 1979-02-27 | 1984-05-17 | Concordia Sprecher-Schaltgeräte GmbH, 7024 Filderstadt | Löschkammer |
DE3111793A1 (de) * | 1981-03-20 | 1982-09-30 | Siemens AG, 1000 Berlin und 8000 München | Lasttrennschalter mit einem schwenkbaren schaltarm und mit einer loescheinrichtung |
DE3122442A1 (de) * | 1981-06-02 | 1982-12-23 | Siemens AG, 1000 Berlin und 8000 München | Trennschalter fuer hochspannungsanlagen |
-
1983
- 1983-08-27 DE DE3331024A patent/DE3331024A1/de not_active Withdrawn
-
1984
- 1984-08-18 DE DE8484109850T patent/DE3478883D1/de not_active Expired
- 1984-08-18 AT AT84109850T patent/ATE44422T1/de not_active IP Right Cessation
- 1984-08-18 EP EP84109850A patent/EP0135789B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0135789A2 (fr) | 1985-04-03 |
EP0135789A3 (en) | 1986-10-29 |
DE3331024A1 (de) | 1985-03-14 |
ATE44422T1 (de) | 1989-07-15 |
DE3478883D1 (en) | 1989-08-10 |
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