EP1214727A2 - Circuit breaker - Google Patents
Circuit breakerInfo
- Publication number
- EP1214727A2 EP1214727A2 EP00953001A EP00953001A EP1214727A2 EP 1214727 A2 EP1214727 A2 EP 1214727A2 EP 00953001 A EP00953001 A EP 00953001A EP 00953001 A EP00953001 A EP 00953001A EP 1214727 A2 EP1214727 A2 EP 1214727A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit breaker
- moving contact
- voltage power
- low
- pole
- 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
Links
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000032683 aging Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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
- H01H33/666—Operating arrangements
- H01H33/6662—Operating arrangements using bistable electromagnetic actuators, e.g. linear polarised electromagnetic actuators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
- H01H1/5822—Flexible connections between movable contact and terminal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
- H01H1/5822—Flexible connections between movable contact and terminal
- H01H2001/5827—Laminated connections, i.e. the flexible conductor is composed of a plurality of thin flexible conducting layers
-
- 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
- H01H33/6606—Terminal arrangements
Definitions
- the present invention relates to a low-voltage power circuit breaker having improved functions and characteristics; more specifically, the expression "low- voltage power circuit breaker” is used to reference a circuit breaker for applications with operating voltages below 1000 Volt.
- circuit breakers with air-insulated interruption and mechanical actuation have a mechanical life which can vary from a few thousand to a maximum of a few tens of thousands of switching operations, and a significantly lower electrical life, mainly due to the formation of intense electric arcs which significantly deteriorate the contacts.
- the electrical life increases considerably and reaches in practice the same order of magnitude as the mechanical life.
- it is necessary to program and correctly perform a complex maintenance plan during the use of the circuit breaker, so as to compensate for variations caused by wear and aging which are typical of mechanical systems.
- Figure 1 is a schematic view of a low-voltage power circuit breaker according to the invention
- Figure 2 is a schematic view of an electromagnetic actuator which can be used in the circuit breaker according to the invention.
- the low- voltage power circuit breaker comprises an enclosure 1 which is in vacuum and contains at least one fixed contact 7 and at least one moving contact 6.
- the vacuum enclosure 1, which constitutes the interruption chamber of the circuit breaker can be constituted by an appropriately shaped bulb inside which vacuum is maintained; the embodiment of the bulb and the manner in which the vacuum is maintained inside it are widely known in the art and are accordingly not described further.
- the fixed contact 7 is electrically connected, by using conventional conducting means 4, for example a copper bar, to a user to be supplied, not shown; in turn, the moving contact 6 is electrically connected, by virtue of conducting means 5, to a power supply line, also not shown in the figure.
- Said conducting means 5 can be constituted by a plurality of flexible metal strips which are packed together and perforated at their opposite ends, so as to accommodate means for connection to the moving contact 6 and to the power supply line.
- the power supply unit 8 is operatively controlled by an electronic command unit 9, which is also connected to the power supply mains; said electronic command unit 9, according to an intervention command which originates for example from a protection system or from an operator, causes the intervention of the power supply unit 8; in this manner the capacitors discharge and energize the coil.
- the flux generated by the electrically excited coil allows to overcome the retention force applied by the permanent magnets 26 and 27 to the movable armature 30 and to produce its movement in the direction of said excited coil 44. In this manner, the pivot 20 performs a translatory motion and transmits the movement to the kinematic chain 3.
- the kinematic chain 3 comprises two linkages 35 and 36 which transmit the motion from the pivot 20 to a transmission lever 37; said transmission lever 37, by turning about its pivoting point 38, produces the movement of a coupling pivot 39 which is rigidly coupled thereto and is connected to the moving contact 6; in this manner, the latter moves, consequently realizing the requested operation.
- the kinematic chain 3 can be modified appropriately, for example by varying the number of its constructive components, their relative arrangement and/or their geometric configuration.
- an actuator thus provided allows to significantly simplify the constructive architecture of the circuit breaker with respect to the current state of the art, by eliminating or at least significantly reducing the need of springs and/or of other complicated and cumbersome components; the fact should also be stressed that the use of a vacuum interruption technique does not require excessive switching forces, so that the combination of said interruption method with an electromagnetic actuation produces a synergistic effect which allows to further optimize the geometric and energy sizing of the circuit breaker as a whole, and to reduce testing and calibration operations as well.
- circuit breaker thus conceived is susceptible of modifications and variations, all of which are within the scope of the inventive concept; all the details may furthermore be replaced with technically equivalent elements.
- materials used so long as they are compatible with the specific use, as well as the dimensions, may be any according to the requirements and the state of the art.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Percussive Tools And Related Accessories (AREA)
- Valve Device For Special Equipments (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
- Control Of Eletrric Generators (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Logic Circuits (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1999MI001720A IT1313278B1 (en) | 1999-07-30 | 1999-07-30 | LOW VOLTAGE POWER SWITCH. |
ITMI991720 | 1999-07-30 | ||
PCT/EP2000/006263 WO2001009912A2 (en) | 1999-07-30 | 2000-06-28 | Circuit breaker |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1214727A2 true EP1214727A2 (en) | 2002-06-19 |
EP1214727B1 EP1214727B1 (en) | 2004-09-22 |
Family
ID=11383471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00953001A Expired - Lifetime EP1214727B1 (en) | 1999-07-30 | 2000-06-28 | Circuit breaker |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1214727B1 (en) |
AT (1) | ATE277417T1 (en) |
AU (1) | AU6561000A (en) |
DE (1) | DE60014122T2 (en) |
ES (1) | ES2228591T3 (en) |
IT (1) | IT1313278B1 (en) |
WO (1) | WO2001009912A2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4230246B2 (en) * | 2002-08-27 | 2009-02-25 | 三菱電機株式会社 | Operating device and switchgear using the operating device |
WO2007010608A1 (en) * | 2005-07-21 | 2007-01-25 | Mitsubishi Denki Kabushiki Kaisha | Breaker |
FR3008542B1 (en) * | 2013-07-09 | 2015-10-02 | Schneider Electric Ind Sas | CIRCUIT BREAKER RESET DETECTION DEVICE, ACTUATOR FOR CIRCUIT BREAKER CONTACTS SEPARATION MECHANISM, ELECTRIC CIRCUIT BREAKER AND USE OF INDUCED CURRENT FOR GENERATING REARMING INDICATION SIGNAL |
DE102013216018B4 (en) * | 2013-08-13 | 2021-06-02 | Siemens Aktiengesellschaft | Device for transmitting forces |
CN108711533A (en) * | 2018-05-04 | 2018-10-26 | 卓维电力科技有限公司 | One kind can lock vacuum circuit breaker |
EP4025924B1 (en) * | 2019-12-05 | 2023-11-08 | S&C Electric Company | Low energy reclosing pulse test system and method |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3614353A (en) * | 1968-05-30 | 1971-10-19 | Tokyo Shibaura Electric Co | Switching device having electro-magnetic means for increasing effective contact pressure |
US3663906A (en) * | 1969-10-09 | 1972-05-16 | Gen Electric | Electric circuit breaker with magnetically assisted closing means |
US4153827A (en) * | 1976-01-26 | 1979-05-08 | Merlin Gerin | Magnetic blow-out arc extinguishing device |
DE4304921C1 (en) * | 1993-02-18 | 1994-08-25 | E I B S A | Bistable magnetic drive for an electrical switch |
GB9318876D0 (en) * | 1993-09-11 | 1993-10-27 | Mckean Brian | A bistable permanent magnet actuator for operation of circuit breakers |
EP0801407B1 (en) * | 1996-04-11 | 2004-07-14 | ABB PATENT GmbH | Single or multiphase vacuum switch |
IT1287151B1 (en) * | 1996-11-11 | 1998-08-04 | Abb Research Ltd | MAGNETIC ACTUATOR |
US5912604A (en) * | 1997-02-04 | 1999-06-15 | Abb Power T&D Company, Inc. | Molded pole automatic circuit recloser with bistable electromagnetic actuator |
JP3441360B2 (en) * | 1997-03-25 | 2003-09-02 | 株式会社東芝 | Circuit breaker operating device |
-
1999
- 1999-07-30 IT IT1999MI001720A patent/IT1313278B1/en active
-
2000
- 2000-06-28 AT AT00953001T patent/ATE277417T1/en not_active IP Right Cessation
- 2000-06-28 AU AU65610/00A patent/AU6561000A/en not_active Abandoned
- 2000-06-28 WO PCT/EP2000/006263 patent/WO2001009912A2/en active IP Right Grant
- 2000-06-28 DE DE60014122T patent/DE60014122T2/en not_active Expired - Lifetime
- 2000-06-28 EP EP00953001A patent/EP1214727B1/en not_active Expired - Lifetime
- 2000-06-28 ES ES00953001T patent/ES2228591T3/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0109912A3 * |
Also Published As
Publication number | Publication date |
---|---|
WO2001009912A3 (en) | 2001-06-07 |
EP1214727B1 (en) | 2004-09-22 |
ITMI991720A1 (en) | 2001-01-30 |
ES2228591T3 (en) | 2005-04-16 |
DE60014122T2 (en) | 2005-11-17 |
ATE277417T1 (en) | 2004-10-15 |
AU6561000A (en) | 2001-02-19 |
WO2001009912A2 (en) | 2001-02-08 |
IT1313278B1 (en) | 2002-07-17 |
DE60014122D1 (en) | 2004-10-28 |
ITMI991720A0 (en) | 1999-07-30 |
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