EP0920705B2 - Lastschalter - Google Patents
Lastschalter Download PDFInfo
- Publication number
- EP0920705B2 EP0920705B2 EP97944787A EP97944787A EP0920705B2 EP 0920705 B2 EP0920705 B2 EP 0920705B2 EP 97944787 A EP97944787 A EP 97944787A EP 97944787 A EP97944787 A EP 97944787A EP 0920705 B2 EP0920705 B2 EP 0920705B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- vacuum interrupter
- housing
- switch according
- sleeve
- load
- 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
Links
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 239000011324 bead Substances 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 239000012777 electrically insulating material Substances 0.000 claims description 2
- 229920002379 silicone rubber Polymers 0.000 claims description 2
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 229920001897 terpolymer Polymers 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 4
- 238000000576 coating method Methods 0.000 claims 4
- 239000003989 dielectric material Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 5
- 229920001971 elastomer Polymers 0.000 abstract description 2
- 239000000806 elastomer Substances 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 230000008719 thickening Effects 0.000 description 4
- 239000006260 foam Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 230000036316 preload Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 2
- 238000009422 external insulation Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000035882 stress 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
- 238000012549 training Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 238000004804 winding Methods 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
- H01H33/60—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
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
-
- 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
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
- H01H2033/6623—Details relating to the encasing or the outside layers of the vacuum switch housings
-
- 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
Definitions
- the invention relates to a load switch according to the preamble of claim 1.
- Such load switches see for example DE-U-93 14 754- are e.g. as switch disconnector in railway operation known.
- the vacuum interrupter is located here in the on position with that in an insulating housing housed switching mechanism electrical in the bypass to that for the full nominal device current designed main current path.
- switching off first open the main contacts without power and commutate the current to the shunt horizontal series connection of vacuum interrupter and auxiliary switching point, which has an operating fork. Once the main contacts are far enough apart have removed the vacuum interrupter quickly operated via a tilt mechanism and the in Switch-off arc occurring inside the interrupter in the first current zero crossing without any external appearance safely deleted.
- the vacuum interrupters are placed in a medium with higher dielectric strength.
- insulating oil e.g. B. mineral or silicone oil
- various esters or an insulating gas such as sulfur hexafluoride (SF 6 ) for use.
- SF 6 sulfur hexafluoride
- Document FR-2 698 481 A1 discloses one Load switch with a vacuum interrupter, where between the housing of the vacuum interrupter and an outer housing an electrically insulating Body made of silicone.
- This silicone body is tubular and faces either the outside or on the inside, elastically deformable ribs on. It is made in such a way that it is intimate at the same time Contact with the outer surface of the interrupter housing and inner surface of the outer housing. Thereby should be a gap-free to avoid electrical Rollover can be achieved.
- An insulating grease can be introduced while the ribs on the outside to create a seal be compressed at least to a small extent.
- the German utility model G 93 14 754 UI discloses a vacuum interrupter with one against internal pressure durable encapsulation. Encapsulating this Vacuum interrupter consists of an inner one Layer of hard plastic foam and one outer burstproof coat. The preferably from a polyurethane foam inner Layer is evenly porous in order according to the teaching of this The best possible thermal insulation to enable, so in the event of a fault, no ignition sufficient temperature of the surrounding gas can be achieved.
- the burstproof coat is as Formed winding body and consists of threads or Tapes impregnated with a hardened plastic are. It is close to the foam layer trained and dimensioned so that he bursting force can accommodate that within an error the vacuum interrupter occurs.
- the casing of the tube also contains this state of the art a foam Plastic material, which due to aging in its properties can be affected. In particular can embrittlement or detachment of the Foam layer appear from the outer casing of the tube. There is also a disassembly of this encapsulated Vacuum interrupter only if the Wrapping possible.
- the invention is therefore based on the object to create a load switch that is out of control Safe to use for a long time and also removable is.
- the main advantage here is that due to the elastic properties of the cuff no gap remains on the periphery of the housing. An external rollover on the vacuum interrupter It is therefore not possible to have such an air gap.
- the load switch according to the invention has numerous further advantages.
- the load switch can therefore have many Years in continuous operation without the sleeve acting as a dielectric medium must be checked.
- Another advantage is that the Assembly of the circuit breaker according to the invention essential simplified. This is how training with a pre-assembled cuff a pre-assembly of the Arrangement, which is why no effort for a final assembly or a filling e.g. necessary high up on the mast is. Because with no liquid or gaseous medium is handled, the effort for the Transport and installation of the invention Load switch essential.
- the circuit breaker according to the invention is here easy to manufacture and allows disassembly if necessary. In addition, the space requirements and costs kept low for the vacuum interrupter become.
- a complementary Pressure housing made of insulating material, which the outer circumference of the cuff in the elastic range biases.
- this ensures that the cuff is firmly attached to the vacuum interrupter presses and further that also on the outer circumference of the No air gap is created in the cuff, causing an external rollover could enable.
- the possible route for an external rollover this means a Dimension enlarged, in which this practically no longer is possible. Operational safety and reliability the load switch is thereby further increased. Further the vacuum interrupter in the pressure housing centered and fixed.
- the dimensions of the cuff are chosen so that the cuff has a preload on the vacuum interrupter, is reliably prevented that an air gap between the sleeve and the housing of the vacuum interrupter results. So that can also be relative large dimensional tolerances of the vacuum interrupter be balanced. This increases reliability of the circuit breaker.
- the cuff at least one in Axial direction of the pressure housing sealing bead has in the assembly joint of the pressure housing comes to rest, also becomes a seal of the pressure housing against external influences. This reliably prevents e.g. Dirt and especially water in the pressure housing can penetrate. Failure of the circuit breaker can so effectively avoided. Furthermore, the one-piece design of the sleeve with the sealing bead the assembly of the arrangement.
- sealing bead also has a thickening on, which can be squeezed in the assembly joint of the pressure housing the reliability of this increases Sealing on the pressure housing continues.
- the cuff at least one recess for receiving material of the cuff displaced under pressure having. It is achieved that the cuff clean on the peripheral surface of the vacuum interrupter creates without damaging the Cuff occurs due to the applied compressive forces. The reliability of the circuit breaker increases thereby further.
- the at least one recess is advantageously as a circumferential ring groove in the inner periphery the cuff. This will make one even pressure distribution over the entire circumference of the vacuum interrupter.
- the cuff is on at least one End face in the area of at least one end plate at least one pocket is provided in the assembled State an adjustment of the length of the vacuum interrupter possible without the material of the cuff is damaged since it is in at least one pocket can dodge. The reliability of the cuff and thus the operational safety of the circuit breaker thus increased.
- the at least one pocket is also ring-shaped is formed, an even distribution of Pressure load on the front of the cuff reached.
- the cuff according to the invention is preferred made of EPDM (ethylene-propylene terpolymer) or Made of silicone rubber, which has good elastic properties have and not compressible are. Such materials allow a secure seal the interface between the vacuum interrupter and the cuff or between the cuff and the pressure housing of the circuit breaker. On Outside rollover can be avoided safely.
- EPDM ethylene-propylene terpolymer
- silicone rubber which has good elastic properties have and not compressible are.
- vacuum interrupter If parallel to the vacuum interrupter or parallel to the series connection vacuum interrupter / visible Isolation section when switched on the circuit breaker has a current path for high continuous current carrying capacity is switched on, the vacuum tube relieved when the load switch (switch disconnector) is in the closed state.
- This has the Advantage that the vacuum interrupter only in the Switching operations with the present high voltages is applied. This can be a continuous current which are higher than the nominal current of the Switching chamber or series connection from a vacuum switching chamber and visible separation distance. The lifespan the load switch increases significantly.
- a load switch 1 a pressure housing with two housing halves 11 and 12, which are made of insulating material and are essentially mirror images.
- the Housing halves 11 and 12 include a vacuum interrupter 2 and a switching mechanism 3 arranged.
- the arrangement and function of the vacuum interrupter 2 and the switching mechanism 3 corresponds the known versions, which is why on a detailed Explanation on this is dispensed with.
- Essential is that the vacuum interrupter 2 has switching contacts inside has closed by the switching mechanism 3 or be opened. This is the switching mechanism 3 with an eccentric actuator 31 trained, which on a movable Contact 21 of the vacuum interrupter 2 acts.
- the vacuum interrupter 2 has in addition the movable contact 21 a fixed contact 22 on the opposite of the movable contact 21 is arranged.
- the vacuum interrupter 2 also has a housing 23 which is metallic End plates 24 and 25 is provided which is cylindrical Complete middle section of housing 26.
- the middle part of the housing 26 is made of electrically insulating material manufactured. Inside the vacuum interrupter 2 there is a high vacuum, which when switched off for a safe arc break and when switched off Condition for safe voltage maintenance provides.
- Vacuum interrupter 2 a sleeve 4 made of EPDM (Ethylene-propylene terpolmer) arranged.
- the cuff 4 is designed such that it has the edges of the two end plates 24 and 25 of the vacuum interrupter 2 embraces. Furthermore, the dimensions the cuff 4 chosen so that tolerance deviations the vacuum interrupter 2 balanced can be and the cuff 4 still under Preload on the peripheral surface of the vacuum interrupter 2 is present. As a result, there is no continuous Air gap between the end plates 24 and 25 before.
- the cuff 4 is in turn from the housing halves 11 and 12 of the switch 1 and biased. Due to the preload too between the sleeve 4 and the assembled housing halves 11 and 12 no air gap in front of which an external rollover the tension between the end plates 24 and 25 would allow the vacuum interrupter 2.
- the cuff has 4 ring-shaped screens 41 on the in corresponding recesses in the housing halves 11 and 12 are included.
- the screens 41 serve in a known manner to extend the route (Creepage distance) along the surface.
- the cuff 4 also has four recesses 42 arranged on the inner peripheral surface are and have an annular shape. At the Closing the housing halves 11 and 12 will apply pressure the cuff 4 exercised and since this is made of an elastomeric material is made, which is elastic but in essential is not compressible, allow the Recesses 42 a dodge of the material of the Cuff 4 in the spaces thus formed. On this will damage the cuff 4 prevents and a good seal of the interface between the sleeve 4 and the vacuum interrupter 2 reached.
- annular pocket 43 is also formed. Since vacuum interrupters 2 have relatively large length tolerances may be a Length adjustment or positioning of the vacuum interrupter 2 in load switch 1 necessary. To the necessary deformation of the cuff 4 in this The frontal area serves to enable the annular Pocket 43 as a chamber for volume compensation of the displaced material.
- the cuff has 4 further a sealing bead 44 with a thickening 45 on. These are on the two assembly joints the housing halves 11 and 12 of the circuit breaker 1 for sealing against external influences arranged.
- the thickening 45 is accordingly trained recesses or grooves on the Joint surfaces of the housing halves 11 and 12 added and when closing the housing halves 11 and 12 crimped.
- the sealing bead 44 with the thickening 45 has a length which is essentially the total length corresponds to the cuff 4. But he can also in the entire assembly joint area of the housing halves 11 and 12 in one piece with the cuff 4 as Round cord designed to seal the pressure housing his.
- the load switch used as switch disconnector and in series arranged with a visible separation distance. It is a main current path designed for the continuous operating current parallel to the vacuum interrupter and one connected with this auxiliary switching point in series, whereby the vacuum tube when switched on Switch disconnector is relieved.
- the main contact opens, causing the voltage completely passed through the vacuum interrupter 2 becomes. Then the contacts 21 and 22 of the Vacuum interrupter 2 disconnected and the connection is completely interrupted without arcing can train in the load switch 1.
- the dimensions and shape of the cuff 4 can, depending on the construction and type of the vacuum interrupter 2 vary. In any case, it is essential that the cuff 4 so on the vacuum interrupter 2 is present that there is no air gap between them is possible.
- the cuff 4 does not have to be 41 be trained, but can also be designed differently or have a smooth outer peripheral surface, if the safety of the load switch 1 e.g. by virtue of of low existing voltages.
- the recesses 42 in the cuff 4 have in the example shown semicircular cross sections and are in four places around the vacuum interrupter 2 trained. Both the shape as also the number of annular recesses 42 can deviate from this. It is also possible that Cutouts 42 instead of the shown embodiment with an annular shape to provide the inner peripheral surface of the sleeve 4.
- the pocket 43 in the cuff 4 can also be provided on both end faces. Furthermore can also change the shape and number of pocket 43 in vary in a manner similar to the recesses 42.
- the cuff 4 can in any way Connection with vacuum interrupters 2 used be what other switching elements than switch disconnectors includes. It is also used in circuit breakers and the like conceivable.
- the pressure housing can also consist of more than two housing parts exist, the number of Sealing beads 44 adapted to the number of assembly joints is.
- a continuous current or main current contact system be provided, which allows the load switch 1 using a specific vacuum interrupter 2 for different nominal or continuous currents interpreted.
- the invention thus creates a load switch 1 for voltages in the kV range with a vacuum interrupter 2, which by a made of elastomer material trained with high dielectric strength Cuff 4 is gripped without gaps.
- the cuff 4 is in turn through the housing halves 11 and 12 of the load switch 1 clamped. That way a high tension outside flashover between the end plates 24 and 25 of the vacuum interrupter 2 effectively prevented during the switching process without liquid or gaseous media are necessary for this.
- This is in contrast to conventional circuit breakers no high control effort required and the Load switch is harmless to the environment.
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Electrophonic Musical Instruments (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
- Keying Circuit Devices (AREA)
- Gas-Insulated Switchgears (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Power Steering Mechanism (AREA)
- Electric Clocks (AREA)
- Thermally Actuated Switches (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9730071T SI920705T2 (en) | 1996-08-26 | 1997-08-25 | Load interrupter switch |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19634451 | 1996-08-26 | ||
DE19634451A DE19634451C1 (de) | 1996-08-26 | 1996-08-26 | Lastschalter |
PCT/EP1997/004617 WO1998009310A1 (de) | 1996-08-26 | 1997-08-25 | Lastschalter |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0920705A1 EP0920705A1 (de) | 1999-06-09 |
EP0920705B1 EP0920705B1 (de) | 2000-04-19 |
EP0920705B2 true EP0920705B2 (de) | 2003-05-14 |
Family
ID=7803719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97944787A Expired - Lifetime EP0920705B2 (de) | 1996-08-26 | 1997-08-25 | Lastschalter |
Country Status (18)
Country | Link |
---|---|
EP (1) | EP0920705B2 (sr) |
AT (1) | ATE191990T1 (sr) |
AU (1) | AU4618397A (sr) |
CA (1) | CA2263881C (sr) |
CZ (1) | CZ288889B6 (sr) |
DE (2) | DE19634451C1 (sr) |
DK (1) | DK0920705T4 (sr) |
ES (1) | ES2144880T5 (sr) |
GR (1) | GR3033287T3 (sr) |
HK (1) | HK1017768A1 (sr) |
HU (1) | HU222705B1 (sr) |
PL (1) | PL187251B1 (sr) |
PT (1) | PT920705E (sr) |
RS (1) | RS49698B (sr) |
RU (1) | RU2188474C2 (sr) |
SK (1) | SK282723B6 (sr) |
TR (1) | TR199900436T2 (sr) |
WO (1) | WO1998009310A1 (sr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6130394A (en) * | 1996-08-26 | 2000-10-10 | Elektrotechnische Weke Fritz Driescher & Sohne GmbH | Hermetically sealed vacuum load interrupter switch with flashover features |
DE19712182A1 (de) * | 1997-03-22 | 1998-09-24 | Abb Patent Gmbh | Vakuumkammer |
DE19906972B4 (de) * | 1999-02-19 | 2008-04-30 | Abb Ag | Schalterpolteil mit Vakuumschaltkammer |
DE19918077C1 (de) * | 1999-04-21 | 2000-11-09 | Driescher Eltech Werk | Lastschalter |
FR2794280B1 (fr) * | 1999-05-28 | 2001-07-20 | Alstom | Disjoncteur a moyenne tension a coupure dans le vide comportant un boitier de protection par pole |
DE102004006476B4 (de) * | 2004-02-04 | 2006-02-09 | Siemens Ag | Lasttrennschalter |
FR3073663A1 (fr) * | 2017-11-16 | 2019-05-17 | Schneider Electric Industries Sas | Pole de coupure pour appareil electrique de coupure |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2322372A1 (de) † | 1973-04-30 | 1974-11-07 | Siemens Ag | Mehrpoliges vakuumschaltgeraet |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1191664A (en) * | 1966-06-07 | 1970-05-13 | Reyrolle & Company Ltd | Improvements relating to Vacuum Switches |
US3594525A (en) * | 1969-04-21 | 1971-07-20 | Gen Electric | Common parallel operating means for series-connected, laterally offset vacuum switches |
US3671696A (en) * | 1970-11-16 | 1972-06-20 | Allis Chalmers Mfg Co | Vacuum interrupter shunted with mechanical switch |
US4088859A (en) * | 1977-02-23 | 1978-05-09 | Westinghouse Electric Corp. | Normal open low voltage vacuum shorting switch |
US4393286A (en) * | 1978-08-24 | 1983-07-12 | Tokyo Shibaura Denki Kabushiki Kaisha | Vacuum circuit breakers |
JPS5812230A (ja) * | 1981-07-16 | 1983-01-24 | 富士電機株式会社 | 断路器付真空負荷開閉器 |
FR2698481B1 (fr) * | 1992-11-26 | 1995-02-17 | Soule Sa | Système de coupure de ligne électrique comportant un interrupteur sous atmosphère contrôlée. |
DE9314754U1 (de) * | 1993-09-27 | 1994-03-03 | Siemens AG, 80333 München | Vakuumschaltröhre mit einer gegen Innendruck beständigen Kapselung |
-
1996
- 1996-08-26 DE DE19634451A patent/DE19634451C1/de not_active Expired - Lifetime
-
1997
- 1997-08-25 EP EP97944787A patent/EP0920705B2/de not_active Expired - Lifetime
- 1997-08-25 DE DE59701481T patent/DE59701481D1/de not_active Expired - Lifetime
- 1997-08-25 AU AU46183/97A patent/AU4618397A/en not_active Abandoned
- 1997-08-25 PT PT97944787T patent/PT920705E/pt unknown
- 1997-08-25 AT AT97944787T patent/ATE191990T1/de active
- 1997-08-25 CA CA002263881A patent/CA2263881C/en not_active Expired - Lifetime
- 1997-08-25 WO PCT/EP1997/004617 patent/WO1998009310A1/de active IP Right Grant
- 1997-08-25 SK SK238-99A patent/SK282723B6/sk not_active IP Right Cessation
- 1997-08-25 CZ CZ1999585A patent/CZ288889B6/cs not_active IP Right Cessation
- 1997-08-25 DK DK97944787T patent/DK0920705T4/da active
- 1997-08-25 TR TR1999/00436T patent/TR199900436T2/xx unknown
- 1997-08-25 HU HU9903117A patent/HU222705B1/hu active IP Right Grant
- 1997-08-25 ES ES97944787T patent/ES2144880T5/es not_active Expired - Lifetime
- 1997-08-25 PL PL97331997A patent/PL187251B1/pl unknown
- 1997-08-25 RS YUP-102/99A patent/RS49698B/sr unknown
- 1997-08-25 RU RU99105735/09A patent/RU2188474C2/ru active
-
1999
- 1999-06-30 HK HK99102763A patent/HK1017768A1/xx not_active IP Right Cessation
-
2000
- 2000-04-20 GR GR20000400964T patent/GR3033287T3/el unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2322372A1 (de) † | 1973-04-30 | 1974-11-07 | Siemens Ag | Mehrpoliges vakuumschaltgeraet |
Non-Patent Citations (3)
Title |
---|
Epoxahars in mideenspanningschalsystemen, H. Bijsterbosch, Kunststof en Rubber, Februard 1995, S. 12-15 † |
Field calculations on epoxy resin insulated vacuum interrupters, M.B.J Leusenkamp et al. Preoceedings XVIIth International Symposium on Discharges and Electrical Insulation in Vacuum, Berkeley, USA, 21-26 July 1996, S.1065-1069 † |
Holec Broschüre 22.3.3 "High voltage switch gear type SVS-12kV-24kV 1990 † |
Also Published As
Publication number | Publication date |
---|---|
CA2263881C (en) | 2006-11-28 |
CZ58599A3 (cs) | 1999-07-14 |
RS49698B (sr) | 2007-12-31 |
CA2263881A1 (en) | 1998-03-05 |
DE19634451C1 (de) | 1998-01-29 |
EP0920705A1 (de) | 1999-06-09 |
PL331997A1 (en) | 1999-08-16 |
TR199900436T2 (xx) | 1999-05-21 |
WO1998009310A1 (de) | 1998-03-05 |
DE59701481D1 (de) | 2000-05-25 |
RU2188474C2 (ru) | 2002-08-27 |
DK0920705T3 (da) | 2000-09-25 |
HUP9903117A2 (hu) | 2000-02-28 |
CZ288889B6 (cs) | 2001-09-12 |
HK1017768A1 (en) | 1999-11-26 |
HU222705B1 (hu) | 2003-09-29 |
YU10299A (en) | 1999-11-22 |
PT920705E (pt) | 2000-10-31 |
ES2144880T5 (es) | 2004-02-16 |
HUP9903117A3 (en) | 2002-03-28 |
ES2144880T3 (es) | 2000-06-16 |
AU4618397A (en) | 1998-03-19 |
GR3033287T3 (en) | 2000-09-29 |
DK0920705T4 (da) | 2003-06-30 |
EP0920705B1 (de) | 2000-04-19 |
ATE191990T1 (de) | 2000-05-15 |
PL187251B1 (pl) | 2004-06-30 |
SK23899A3 (en) | 2000-03-13 |
SK282723B6 (sk) | 2002-11-06 |
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