EP0173804B1 - Interrupteur à gaz comprimé - Google Patents
Interrupteur à gaz comprimé Download PDFInfo
- Publication number
- EP0173804B1 EP0173804B1 EP85107283A EP85107283A EP0173804B1 EP 0173804 B1 EP0173804 B1 EP 0173804B1 EP 85107283 A EP85107283 A EP 85107283A EP 85107283 A EP85107283 A EP 85107283A EP 0173804 B1 EP0173804 B1 EP 0173804B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- compressed
- contact
- case
- breaker according
- 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
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000011810 insulating material Substances 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 19
- 230000003628 erosive effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
Images
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
- H01H33/025—Terminal 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
Definitions
- the invention is based on a gas pressure switch according to the preamble of claim 1.
- the invention relates to a gas pressure switch as described in DE-A-2 811 509.
- the known switch has an insulating gas-filled, tubular housing in which two contact pieces which are movable relative to one another along the housing axis are arranged.
- the contact pieces form a U-shaped current loop with two current connections running through the housing wall at right angles to the housing axis.
- This switch uses an insulating gas to extinguish an arc that is located on the contact pieces when it is switched off, and which is compressed by the arc as a result of heating and is stored in a heating volume surrounding the contact pieces.
- this switch requires an insulating tube, the inside diameter of which is matched to the outside diameter of one of its movable contact pieces.
- Such an insulating tube stabilizes the arc on the housing axis which is burning in the course of the U-shaped current loop and is therefore exposed to radial magnetic forces, but is exposed to the direct thermal influence of the arc and is therefore subject to heavy wear.
- the power connections are offset from one another in the direction of the housing axis, which results in a comparatively large axial overall length.
- This switch also has a comparatively large overall length, since the two power connections are axially offset from one another below the isolating gap delimiting the switching arc on the housing and the current from the upper of the two electrical connections is first in a casing part of the housing coaxially surrounding the isolating distance and then via a radially extending plate is guided to a nozzle-shaped, fixed contact piece.
- the current path formed by the jacket part, the plate and the contact pieces receiving the arc in the isolating section consists of axially symmetrical loops which center the arc on the housing axis and prevent its radial migration.
- the compressed gas switch according to the invention is characterized in that, because of its small overall length in the direction of the contact piece axis, it can be installed in switchgear in such a way that the path of the current to be switched off runs transversely to the contact piece axis. This makes it possible to design the switchgear to be particularly space-saving. In addition, such a switch can be easily installed, since its contact system can be produced independently of its housing and can be attached to a fixed contact located in the housing by simply plugging it on.
- 1 denotes a cylindrical housing filled with an insulating gas, such as sulfur hexafluoride, for example at a pressure of 4 bar.
- Bushings 2 and 3 are provided on diametrically opposite sides of the housing 1, through which a power connection 4 and 5 for a movable, fully cylindrical contact piece 6 and a fixedly hollow cylindrical contact piece 7 are guided into the interior of the housing 1.
- the power connection 2 is electrically conductively connected via a sliding contact (not shown) and, for example, designed as a multi-lamella contact, to the contact piece 6 movable by a drive (not shown) in the direction of an axis shown in broken lines.
- the movable contact piece 6, like the fixed contact piece 7, is designed to be erosion-resistant. Both contact pieces can be used Transfer of nominal current may be formed, however, when transmitting large nominal currents, it is advantageous to provide the movable contact piece 6 with a nominal current contact 8 shown in dotted lines in FIG dotted) nominal current contact 9 cooperates.
- This forms a nominal current path which now runs parallel to the contact pieces 6 and 7, which now only act as erosion contacts, and which runs outside a heating volume 10, which consists of a body 11 arranged coaxially with the contact pieces 6 and 7 and made of a pressure-resistant and erosion-resistant insulating material, such as glass-fiber reinforced material Plastic that is surrounded.
- the contact piece 7 does not necessarily have to be hollow cylindrical. Rather, it is also possible for it to be of fully cylindrical design and to close the heating volume 10. In a corresponding manner, the movable contact piece 6 can be designed as a hollow cylinder.
- the insulating body 11 has a lower opening, into which the movable contact piece 6 is guided, and an upper opening, in which the fixed contact 7 is fastened to the insulating body 11.
- the fixed contact 7 contains two contact parts 12 and 13 (FIG. 2) designed as erosion-resistant nozzle half-shells, which are in electrically conductive connection with the power connection 5. This electrically conductive connection can be brought about in that the current connection 5 is led directly to the contact piece 7 or acts only indirectly on the contact piece 7.
- the power connection 5 is formed from two flat rails 14 and 15 which run parallel to one another and which have fork-like widened ends in the region of the contact piece 7.
- the ends of the two flat rails 14 and 15 rest on insulating parts 16 and 17, which are supported on diametrically opposite outer surfaces of both contact parts 12 and 13 (see also FIG. 3).
- the ends of the turns 18, 19 facing away from the flat rails 14, 15 are connected in an electrically conductive manner to a spring ring 21 which is arranged coaxially with the coil 20 and which presses the contact parts 12, 13 together.
- the spring ring 21 is made of electrically conductive material and therefore mediates the electrical contact between the coil 20 and the contact parts 12 and 13.
- the two flat rails 14, 15 are under the action of a spring 22.
- the flat rails 14, 15 are supported on the one hand in a defined manner on the contact parts 12, 13 and, on the other hand, there is a defined contact force between the flat rails 14, 15 and a fixed contact provided in the power connection 23 generated.
- the contact system described above can be completely preassembled and then only needs to be plugged onto the fixed contact 23 when mounting the compressed gas switch.
- the power connections 4 and 5 are guided out of the housing 1 essentially transversely to the contact piece axis and each form at least one loop in the interior of the housing.
- These loops are arranged in a plane containing the bushings 2 and 3 and the contact piece axis and each have a section 24 or 25 which extends in the axial direction and a section 26 or 27 which extends radially to the contact piece axis.
- the section 24 extends from the bushing 2 downwards, whereas the section 25 extends from the bushing 3 upwards.
- the section 26 adjoining the section 24 extends into the interior of the housing 1 and ends in the sliding contact enclosing the movable contact piece 6, while the section 27 adjoining the section 25 and also extends into the housing 1 is designed as flat rails 14, 15 as described above and ends at contact piece 7.
- This gas pressure switch has the mode of operation described below:
- the movable contact piece 6 When it is switched off, the movable contact piece 6 is moved downward and, after the nominal current contacts 8 and 9, which may be provided, are opened, an arc 28 caused by the current to be switched off is drawn between the subsequently separating contact pieces 6 and 7. Due to the loops provided in the current connections 4 and 5 and designed as described above, the electromagnetic forces acting on the arc 28 cancel each other almost completely, so that the arc 20 burns essentially centrally despite the cross-feed, whereby the contact pieces 6 and 7 burn off evenly is achieved.
- the configuration of the power connection 5 by means of parallel flat rails 14 and 15 ensures that the frictional forces between the fixed contact piece 7 and the movable contact piece inserted into the fixed contact piece 7 when switched on can be kept low.
- the erosion on the contact pieces 6 and 7 is further reduced by the fact that the current to be switched off flows through the coil 20.
- the magnetic field caused by the coil 20 namely causes the arc 28 to rotate about the contact piece axis. Since the coil 20 has two windings 18 and 19, each of which is fed in parallel by a flat rail 14 or 15, the attractive force of the flat rails 14 and 15 is also retained in the region of the fixed contact piece 7.
- the spring ring 21 which receives the currents flowing through the parallel windings 18 and 19 of the coil 20 effects the current transfer to the contact parts 12 and 13.
- the spring forces of this ring should be dimensioned in such a way that in the switched-on state, namely when the movable contact piece 6 is in the contact piece 7 is retracted, the force effect of which ensures sufficient current transfer from the fixed to the movable contact piece via the contact parts 12 and 13 for large and small currents. Since, as described above, the attractive and repulsive electromagnetic forces at the contact piece 7 are almost compensated for with large currents when the flat rails 14 and 15 are suitably dimensioned, it is possible to keep the frictional force between the fixed and movable contact piece and thus the contact abrasion low.
- the arc 28 drawn between the contact pieces 6 and 7 heats the insulating gas vigorously in the high current phase, as a result of which the gas pressure in the heating volume 10 is increased considerably.
- a vigorous flow of insulating gas stored in the heating volume 10 then sets in through the nozzle opening enclosed by the contact parts 12 and 13 into an expansion space delimited by insulating body 11 and housing 1, through which the arc 28 is blown.
- a further advantageous effect of the invention is to be seen in the fact that the heated insulating gas entering the expansion space initially strikes the housing 1 on the side facing away from the drive, and during this and during its subsequent outflow along the wall of the housing into the nominal current contacts 8, if applicable , 9 containing part of the housing is cooled considerably.
- the nominal current contacts 8, 9, if provided, are then effectively protected against direct contamination by the extinguishing gases emerging from the heating volume 10 and heated to high temperatures, despite the short overall length of the housing in the axial direction.
- An additional magnetic blowing is achieved here by the coil 20, in particular if it is arranged in the region of the narrowest part of the opening of the contact piece 7.
- a further blowing can also be achieved in that the lower opening in the insulating material body 11 is designed as a nozzle that can be released by the movable contact piece 6 or when the movable contact piece 6 itself is designed as a nozzle.
Landscapes
- Circuit Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH401584 | 1984-08-22 | ||
CH4015/84 | 1984-08-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0173804A1 EP0173804A1 (fr) | 1986-03-12 |
EP0173804B1 true EP0173804B1 (fr) | 1988-09-21 |
Family
ID=4268211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85107283A Expired EP0173804B1 (fr) | 1984-08-22 | 1985-06-13 | Interrupteur à gaz comprimé |
Country Status (4)
Country | Link |
---|---|
US (1) | US4665288A (fr) |
EP (1) | EP0173804B1 (fr) |
JP (1) | JPH07101581B2 (fr) |
DE (2) | DE3435967A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2617633B1 (fr) * | 1987-07-02 | 1989-11-17 | Merlin Gerin | Disjoncteur a arc tournant et a expansion |
US5140107A (en) * | 1991-07-02 | 1992-08-18 | Ncr Corporation | Digitizer screen and method of making |
US5464956A (en) * | 1994-04-08 | 1995-11-07 | S&C Electric Company | Rotating arc interrupter for loadbreak switch |
DE19613568A1 (de) * | 1996-04-04 | 1997-10-09 | Asea Brown Boveri | Leistungsschalter |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB485463A (en) * | 1936-10-31 | 1938-05-20 | British Electrical & Allied In | Improvements in or relating to electrical circuit breakers |
DE1864376U (de) * | 1962-08-10 | 1962-12-27 | Calor Emag Elektrizitaets Ag | Hochspannungsschaltgeraet mit handbetaetigten schaltbruecken. |
FR1366760A (fr) * | 1963-12-06 | 1964-07-17 | Coq France | Chambre de coupure pour interrupteur à coupure en charge |
US3632932A (en) * | 1969-08-08 | 1972-01-04 | Gen Electric | Current-limiting circuit breaker having a field strap assembly |
NL7306760A (fr) * | 1973-05-15 | 1974-11-19 | ||
DE2339652A1 (de) * | 1973-08-04 | 1975-02-20 | Bbc Brown Boveri & Cie | Loeschkammer fuer mittel- und hochspannungsschaltgeraete |
DE2342520A1 (de) * | 1973-08-23 | 1975-03-06 | Calor Emag Elektrizitaets Ag | Hochspannungsleistungsschalter |
JPS50156675A (fr) * | 1974-05-31 | 1975-12-18 | ||
JPS53117767A (en) * | 1977-03-24 | 1978-10-14 | Mitsubishi Electric Corp | Switch |
DE2759267C3 (de) * | 1977-12-30 | 1980-09-11 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Druckgasschalter |
FR2459543A1 (fr) * | 1979-06-15 | 1981-01-09 | Alsthom Cgee | Disjoncteur a haute tension a arc tournant et autosoufflage |
-
1984
- 1984-09-29 DE DE19843435967 patent/DE3435967A1/de not_active Withdrawn
-
1985
- 1985-06-13 EP EP85107283A patent/EP0173804B1/fr not_active Expired
- 1985-06-13 DE DE8585107283T patent/DE3565190D1/de not_active Expired
- 1985-08-15 US US06/765,943 patent/US4665288A/en not_active Expired - Fee Related
- 1985-08-22 JP JP60183177A patent/JPH07101581B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3565190D1 (en) | 1988-10-27 |
US4665288A (en) | 1987-05-12 |
EP0173804A1 (fr) | 1986-03-12 |
DE3435967A1 (de) | 1986-03-06 |
JPH07101581B2 (ja) | 1995-11-01 |
JPS6161322A (ja) | 1986-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69013946T2 (de) | Lastschalter mit rotierendem Lichtbogen und mit Zentrifugal-Effekt des Löschgases. | |
DE3884078T2 (de) | Selbstbeblasender elektrischer Lastschalter mit rotierendem Lichtbogen. | |
DE2209287C3 (de) | Elektrischer Druckgasschalter | |
EP1502271B1 (fr) | Ensemble interrupteur pour disjoncteur haute tension | |
EP0157922B1 (fr) | Interrupteur à haute tension | |
DE69303568T2 (de) | Hochspannung selbst-Blaslastscharter mit Schnittkammer mit reduzierter Gaskompression | |
DE3107525C2 (de) | Druckgas-Leistungsschalter | |
EP0002685B1 (fr) | Disjoncteur à gaz comprimé | |
EP0173804B1 (fr) | Interrupteur à gaz comprimé | |
DE19816509B4 (de) | Abbrandschaltanordnung | |
EP0290950B1 (fr) | Disjoncteur à gaz comprimé | |
DE3904147C2 (fr) | ||
EP0817228B1 (fr) | Sectionneur de puissance | |
DE3341903C2 (fr) | ||
EP0039523B1 (fr) | Disjoncteur à haute tension | |
DE3540474C2 (fr) | ||
DE3538955A1 (de) | Druckgasschalter | |
EP0202496B1 (fr) | Interrupteur à gaz comprimé | |
DE3833564A1 (de) | Druckgasschalter | |
EP0069694A2 (fr) | Système de contact pour disjoncteur à gaz comprimé | |
EP0434100B1 (fr) | Interrupteur à gaz comprimé | |
DE2703550C2 (de) | Elektrischer Schalter | |
DE10125101A1 (de) | Selbstblas-Löschkammer eines Hochspannungs-Leistungsschalters | |
DE3034189A1 (de) | Zweipoliger niederspannungsschutzschalter mit einfachunterbrechung und elektrodynamischer kompensation der kontaktoeffnungskraefte | |
DE3128473A1 (de) | Kompressionskolbenschalter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI SE |
|
17P | Request for examination filed |
Effective date: 19860627 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BBC BROWN BOVERI AG |
|
17Q | First examination report despatched |
Effective date: 19870917 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE FR GB IT LI SE |
|
ITF | It: translation for a ep patent filed | ||
REF | Corresponds to: |
Ref document number: 3565190 Country of ref document: DE Date of ref document: 19881027 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
ITTA | It: last paid annual fee | ||
EAL | Se: european patent in force in sweden |
Ref document number: 85107283.5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19980514 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19980518 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19980520 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19980525 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19980526 Year of fee payment: 14 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990613 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19990629 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990630 Ref country code: FR Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19990630 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990630 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990630 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19990613 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
EUG | Se: european patent has lapsed |
Ref document number: 85107283.5 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |