EP0399282A2 - Automatischer magneto-thermischer Schutzschalter mit hoher Ausschaltleistung - Google Patents
Automatischer magneto-thermischer Schutzschalter mit hoher Ausschaltleistung Download PDFInfo
- Publication number
- EP0399282A2 EP0399282A2 EP90108624A EP90108624A EP0399282A2 EP 0399282 A2 EP0399282 A2 EP 0399282A2 EP 90108624 A EP90108624 A EP 90108624A EP 90108624 A EP90108624 A EP 90108624A EP 0399282 A2 EP0399282 A2 EP 0399282A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- contact
- moving
- drum
- moving contact
- 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
- 239000011435 rock Substances 0.000 claims abstract description 4
- 230000007935 neutral effect Effects 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2041—Rotating bridge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2472—Electromagnetic mechanisms with rotatable armatures
Definitions
- This invention relates to an automatic magneto-thermal protection switch having a high breaking capacity and being of a type which comprises a control key, a toggle mechanism associated with the key, at least one moving contact operated through said mechanism to rock toward and away from a fixed contact facing a deionization chamber and respective cell, and an amperometric protection solenoid having its moving armature arranged to act on said mechanism.
- the switch When conformant with this standard, the switch will be able to adequately protect resistive loads as are usually to occur in generic domestic and civil systems.
- a current demand is also that of providing modular switches of still smaller size and bulk so that an increased number of them can be accommodated within a station panel. This demand is more acutely felt where the protection for existing systems is to be enhanced and the space available for the station panel is limited.
- the technical problem that underlies this invention is to provide an automatic magneto-thermal protection switch which has such structural and functional characteristics as to permit of the use of uniquely small-size de-ionization chambers, so that the switch can comfortably fit inside a single standard module, and still retain a high breaking capacity, while overcoming the drawbacks with which the prior art is beset.
- the solutive idea on which this invention stands is that of increasing the opening and separation speed of the moving contact relatively to the fixed contact, upon automatic operation of the switch, thereby the size of the de-ionization cells can be reduced.
- an automatic switch of the type specified above being characterized in that it comprises a rocking striker having one end in the path of movement of a breaker arm-like lug on said armature and the other end arranged to abut on said moving contact, to thereby speed up the contact opening movement by the time of automatic operation.
- an automatic magneto-thermal protection switch or breaker according to the invention.
- the switch 1 comprises a box-type case 2 of parallelepipedic shape, known per se, which measures 17.5 mm in width.
- the case 2 is formed of two superimposed half-shells 4 and 5 having mating shapes.
- the switch 1 also comprises a control key 3, of the bistable kind, which is accessible frontally on the case 2 and journalled on a pin 6 fast with the half-shell 5.
- a break mechanism Connected to the key 3 is a break mechanism, generally denoted by 15, comprising a toggle mechanism 16 for driving a moving contact to rock toward and away from a corresponding fixed contact.
- the switch 1 is of the so-called single-pole type with neutral, and input and output fixed-cage terminals 7 and 8 are provided therefor to enable connection to neutral and phase conductors, respectively.
- phase input terminal 8 To the phase input terminal 8, there is connected one end of an amperometric coil 9 intended for automatic magnetic protection operation and wound around a stationary core 10.
- the coil 9 is carried in a U-shaped cage 11 having sheet-like walls and, pivoted to its top, a small moving armature 12 bent at right angles to define a first leg extending over the core 10 and a second leg 12a having an end arranged to interfere with and act upon, with the interposition of a small lever 46, the breaking mechanism 15.
- the end of the first leg of the armature 12 has a breaker arm-like lug 35 serving a function to be explained.
- the armature 12 is apt to be pulled toward the core 10 by the electromagnetic force induced by a fault or short current such that the end active on the mechanism 15 can automatically trip off the switch 1 on the occurrence of a fault situation.
- Respectively associated with the neutral input terminal 7 and the phase output terminal 8 are fixed contacts 14 and 18, toward and away from which, corresponding moving contacts 17 and 19 are guided movably by the mechanism 15.
- a moving contact holder assembly 20 is provided for the purpose which comprises a drum 21 journalled on a pin 22 fast with the half-shell 5.
- the drum 21 is connected peripherally to one end of the toggle mechanism 16 and displaceable angularly against the bias force of a spring means 24.
- each contact, 17 or 19 comprises an annular sheet-like portion 25 fitting around the pin 22 in a mating seat 26 formed in the drum 21 and being held therein against the bias of a spring 27.
- an arm 28 Formed integrally with the portion 25 is an arm 28 carrying the moving contact and jutting out toward the corresponding fixed contact opposite to a de-ionization chamber 30 and respective cell 29.
- the cells 29 are provided on opposed sides of the switch 1 near the fixed contacts 14 and 18; they are arranged substantially along a slightly inclined direction to the major axis of the switch.
- Each cell 29 consists of a set of laminations 36 thickly arranged parallel and attached to one another by small opposed cross-bars 37. These laminations 36 have a V-shaped cutout 38 formed in their side facing the moving contact, whereby a corresponding V-like notch is defined which provides an invitation for the electric arc to be suppressed.
- the spring 27 controls the contact force between the corresponding fixed and moving contacts, while taking up any backlash generated by the contact wear.
- the respective arms 28 of the contacts 17 and 19 extend substantially from opposed ends of the drum 21, and are aligned along the same direction but opposite verses. They are displaceable angularly together with the drum 21 in the same direction of rotation.
- a cord lead 43 connects the portion 25 of the moving contact 17 to the output terminal 7, and a similar cord lead 44 connects the portion 25 of the other moving contact 19 to the end of a bimetallic plate 45.
- This plate 45 has the opposite end connected to the other end of the coil 9, being thus connected in series between that coil and the moving contact 19 to provide thermal protection for the switch 1.
- a small, three-arm lever 46 is journalled for the purpose on a pin 48 rigid with the half-shell 5 and displaceable angularly against the bias force of a spring 47. That lever 46 has a first arm acting as feeler on the bimetallic plate 45, a second arm inserted in the path of travel of the section 12a of the armature 12, and a third arm connected detachably to the breaking mechanism 15.
- a rocking striker 32 is also provided which is journalled on the pin 22 above the drum 21 and has opposite ends 31 and 33 respectively located close against each arm 28, thereby the rocking striker 32 will form with the arms 28 a cross-over X-shaped configuration.
- the rocking striker 32 has its end 33 inserted in the path of travel of the breaker arm-like lug 35 on said armature 12 and the opposite end 31 active on the arm 28 of the moving contact 19 in abutment relationship.
- That same end 33 of the rocking striker 32 is active, on account of the thrust force applied to it by the lug 35 on operation of the coil 9, on the arm 28 of the moving contact 17.
- the switch 1 is also provided with an indicator device 40 indicating the operational state of the switch.
- This device comprises a rod 39 pivoted between the drum 20 and the toggle mechanism 16 and extending to the key 3.
- a small indicator plate 42 in two colors which can be viewed through a window 41 provided in the case 2 front above the key 3.
- the striking effect adds to the elastic pull from the spring 24, with the result that the speed of relative movement of the fixed and moving contacts away from each other can be higher than that afforded by switches made in accordance with the prior art.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Circuit Breakers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8920642A IT1230203B (it) | 1989-05-25 | 1989-05-25 | Interruttore automatico di protezione magnetotermica ad elevato potere di interruzione. |
IT2064289 | 1989-05-25 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0399282A2 true EP0399282A2 (de) | 1990-11-28 |
EP0399282A3 EP0399282A3 (de) | 1992-01-22 |
EP0399282B1 EP0399282B1 (de) | 1995-08-30 |
Family
ID=11169954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90108624A Expired - Lifetime EP0399282B1 (de) | 1989-05-25 | 1990-05-08 | Automatischer magneto-thermischer Schutzschalter mit hoher Ausschaltleistung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0399282B1 (de) |
DE (1) | DE69021931T2 (de) |
ES (1) | ES2078919T3 (de) |
IT (1) | IT1230203B (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0889498A2 (de) * | 1997-07-02 | 1999-01-07 | AEG Niederspannungstechnik GmbH & Co. KG | Drehkontaktanordnung für Hochstromschalter |
DE19819792A1 (de) * | 1998-05-04 | 1999-11-18 | Kopp Heinrich Ag | Mehrpoliger Schalter |
EP1079408A2 (de) * | 1999-08-27 | 2001-02-28 | General Electric Company | Zusätzliche Auslöseeinheit für drehbare Schutzschalter |
EP1085552A1 (de) * | 1999-09-16 | 2001-03-21 | General Electric Company | Abbrandkontaktanordnung |
WO2007088080A1 (de) * | 2006-01-31 | 2007-08-09 | Siemens Aktiengesellschaft | Kontaktsystem für ein elektrisches schaltgerät |
DE102010019353B3 (de) * | 2010-05-05 | 2011-11-10 | Eaton Industries Gmbh | Leistungsschalter mit strombegrenzenden Eigenschaften |
CN101958211B (zh) * | 2009-12-09 | 2012-12-19 | 上海诺雅克电气有限公司 | 具有高分断能力的断路器自动闭合触头装置 |
JP2015215945A (ja) * | 2014-05-07 | 2015-12-03 | 河村電器産業株式会社 | 回路遮断器又は開閉器における接点構造 |
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DE19819242B4 (de) | 1998-04-29 | 2005-11-10 | Ge Power Controls Polska Sp.Z.O.O. | Thermomagnetischer Leistungsschalter |
US6114641A (en) | 1998-05-29 | 2000-09-05 | General Electric Company | Rotary contact assembly for high ampere-rated circuit breakers |
US6087913A (en) | 1998-11-20 | 2000-07-11 | General Electric Company | Circuit breaker mechanism for a rotary contact system |
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US6166344A (en) | 1999-03-23 | 2000-12-26 | General Electric Company | Circuit breaker handle block |
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US6218917B1 (en) | 1999-07-02 | 2001-04-17 | General Electric Company | Method and arrangement for calibration of circuit breaker thermal trip unit |
US6188036B1 (en) | 1999-08-03 | 2001-02-13 | General Electric Company | Bottom vented circuit breaker capable of top down assembly onto equipment |
US6710988B1 (en) | 1999-08-17 | 2004-03-23 | General Electric Company | Small-sized industrial rated electric motor starter switch unit |
US6252365B1 (en) | 1999-08-17 | 2001-06-26 | General Electric Company | Breaker/starter with auto-configurable trip unit |
US6396369B1 (en) | 1999-08-27 | 2002-05-28 | General Electric Company | Rotary contact assembly for high ampere-rated circuit breakers |
US6326869B1 (en) | 1999-09-23 | 2001-12-04 | General Electric Company | Clapper armature system for a circuit breaker |
US6239395B1 (en) | 1999-10-14 | 2001-05-29 | General Electric Company | Auxiliary position switch assembly for a circuit breaker |
US6229413B1 (en) | 1999-10-19 | 2001-05-08 | General Electric Company | Support of stationary conductors for a circuit breaker |
US6317018B1 (en) | 1999-10-26 | 2001-11-13 | General Electric Company | Circuit breaker mechanism |
US6232856B1 (en) | 1999-11-02 | 2001-05-15 | General Electric Company | Magnetic shunt assembly |
US6377144B1 (en) | 1999-11-03 | 2002-04-23 | General Electric Company | Molded case circuit breaker base and mid-cover assembly |
ES2249875T3 (es) | 1999-11-03 | 2006-04-01 | AEG NIEDERSPANNUNGSTECHNIK GMBH & CO. KG | Disposicion de brazo de contacto rotatorio para disyuntor. |
US6300586B1 (en) | 1999-12-09 | 2001-10-09 | General Electric Company | Arc runner retaining feature |
US6310307B1 (en) | 1999-12-17 | 2001-10-30 | General Electric Company | Circuit breaker rotary contact arm arrangement |
US6172584B1 (en) | 1999-12-20 | 2001-01-09 | General Electric Company | Circuit breaker accessory reset system |
US6184761B1 (en) | 1999-12-20 | 2001-02-06 | General Electric Company | Circuit breaker rotary contact arrangement |
US6215379B1 (en) | 1999-12-23 | 2001-04-10 | General Electric Company | Shunt for indirectly heated bimetallic strip |
US6281461B1 (en) | 1999-12-27 | 2001-08-28 | General Electric Company | Circuit breaker rotor assembly having arc prevention structure |
US6346869B1 (en) | 1999-12-28 | 2002-02-12 | General Electric Company | Rating plug for circuit breakers |
US6211758B1 (en) | 2000-01-11 | 2001-04-03 | General Electric Company | Circuit breaker accessory gap control mechanism |
US6239677B1 (en) | 2000-02-10 | 2001-05-29 | General Electric Company | Circuit breaker thermal magnetic trip unit |
US6429759B1 (en) | 2000-02-14 | 2002-08-06 | General Electric Company | Split and angled contacts |
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US6204743B1 (en) | 2000-02-29 | 2001-03-20 | General Electric Company | Dual connector strap for a rotary contact circuit breaker |
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US6346868B1 (en) | 2000-03-01 | 2002-02-12 | General Electric Company | Circuit interrupter operating mechanism |
US6448521B1 (en) | 2000-03-01 | 2002-09-10 | General Electric Company | Blocking apparatus for circuit breaker contact structure |
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US6806800B1 (en) | 2000-10-19 | 2004-10-19 | General Electric Company | Assembly for mounting a motor operator on a circuit breaker |
US6429760B1 (en) | 2000-10-19 | 2002-08-06 | General Electric Company | Cross bar for a conductor in a rotary breaker |
US6362711B1 (en) | 2000-11-10 | 2002-03-26 | General Electric Company | Circuit breaker cover with screw locating feature |
US6380829B1 (en) | 2000-11-21 | 2002-04-30 | General Electric Company | Motor operator interlock and method for circuit breakers |
US6448522B1 (en) | 2001-01-30 | 2002-09-10 | General Electric Company | Compact high speed motor operator for a circuit breaker |
US6476337B2 (en) | 2001-02-26 | 2002-11-05 | General Electric Company | Auxiliary switch actuation arrangement |
US6678135B2 (en) | 2001-09-12 | 2004-01-13 | General Electric Company | Module plug for an electronic trip unit |
US6469882B1 (en) | 2001-10-31 | 2002-10-22 | General Electric Company | Current transformer initial condition correction |
US6804101B2 (en) | 2001-11-06 | 2004-10-12 | General Electric Company | Digital rating plug for electronic trip unit in circuit breakers |
DE102011086307A1 (de) * | 2011-11-14 | 2013-05-16 | Siemens Aktiengesellschaft | Elektrischer Schalter |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2132738B1 (de) * | 1971-07-01 | 1972-07-06 | Ellenberger & Poensgen | Ein- oder mehrpoliger UEberstromschalter mit thermischer und/oder elektromagnetischer Ausloesung |
GB2040573A (en) * | 1979-02-07 | 1980-08-28 | Wolff H W | Improvements in electric circuit breakers |
DE8109136U1 (de) * | 1981-03-27 | 1981-09-10 | Siemens AG, 1000 Berlin und 8000 München | Leitungsschutzschalter |
-
1989
- 1989-05-25 IT IT8920642A patent/IT1230203B/it active
-
1990
- 1990-05-08 DE DE69021931T patent/DE69021931T2/de not_active Expired - Fee Related
- 1990-05-08 ES ES90108624T patent/ES2078919T3/es not_active Expired - Lifetime
- 1990-05-08 EP EP90108624A patent/EP0399282B1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2132738B1 (de) * | 1971-07-01 | 1972-07-06 | Ellenberger & Poensgen | Ein- oder mehrpoliger UEberstromschalter mit thermischer und/oder elektromagnetischer Ausloesung |
GB2040573A (en) * | 1979-02-07 | 1980-08-28 | Wolff H W | Improvements in electric circuit breakers |
DE8109136U1 (de) * | 1981-03-27 | 1981-09-10 | Siemens AG, 1000 Berlin und 8000 München | Leitungsschutzschalter |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0889498A2 (de) * | 1997-07-02 | 1999-01-07 | AEG Niederspannungstechnik GmbH & Co. KG | Drehkontaktanordnung für Hochstromschalter |
EP0889498A3 (de) * | 1997-07-02 | 1999-06-16 | AEG Niederspannungstechnik GmbH & Co. KG | Drehkontaktanordnung für Hochstromschalter |
DE19819792A1 (de) * | 1998-05-04 | 1999-11-18 | Kopp Heinrich Ag | Mehrpoliger Schalter |
EP1079408A2 (de) * | 1999-08-27 | 2001-02-28 | General Electric Company | Zusätzliche Auslöseeinheit für drehbare Schutzschalter |
EP1079408A3 (de) * | 1999-08-27 | 2003-03-26 | General Electric Company | Zusätzliche Auslöseeinheit für drehbare Schutzschalter |
EP1085552A1 (de) * | 1999-09-16 | 2001-03-21 | General Electric Company | Abbrandkontaktanordnung |
WO2007088080A1 (de) * | 2006-01-31 | 2007-08-09 | Siemens Aktiengesellschaft | Kontaktsystem für ein elektrisches schaltgerät |
CN101958211B (zh) * | 2009-12-09 | 2012-12-19 | 上海诺雅克电气有限公司 | 具有高分断能力的断路器自动闭合触头装置 |
DE102010019353B3 (de) * | 2010-05-05 | 2011-11-10 | Eaton Industries Gmbh | Leistungsschalter mit strombegrenzenden Eigenschaften |
JP2015215945A (ja) * | 2014-05-07 | 2015-12-03 | 河村電器産業株式会社 | 回路遮断器又は開閉器における接点構造 |
Also Published As
Publication number | Publication date |
---|---|
EP0399282B1 (de) | 1995-08-30 |
EP0399282A3 (de) | 1992-01-22 |
DE69021931D1 (de) | 1995-10-05 |
IT1230203B (it) | 1991-10-18 |
ES2078919T3 (es) | 1996-01-01 |
DE69021931T2 (de) | 1996-04-25 |
IT8920642A0 (it) | 1989-05-25 |
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