CN1205536A - Single-phase circuit breaker - Google Patents
Single-phase circuit breaker Download PDFInfo
- Publication number
- CN1205536A CN1205536A CN98115470A CN98115470A CN1205536A CN 1205536 A CN1205536 A CN 1205536A CN 98115470 A CN98115470 A CN 98115470A CN 98115470 A CN98115470 A CN 98115470A CN 1205536 A CN1205536 A CN 1205536A
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- fairlead
- overload
- phase circuit
- middle fairlead
- 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
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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
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7427—Adjusting only the electrothermal 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
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
-
- 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
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7427—Adjusting only the electrothermal mechanism
- H01H71/7445—Poly-phase adjustment
Landscapes
- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The safety switch has a switching mechanism which can be activated at least by an overload trigger element. At least one, pref. Two, further switches can be coupled to the first switch so that an overload on one switch causes isolation by all switches. A current range setting device contains an actuation element and an associated current scale. A wedge-shaped adjustment element between the overload trigger element and a yoke acting on the switching mechanism is permanently attached to an intermediate guide part via an elastically flexible spring. The guide part is mounted in the switch housing so as to be movable in the working direction of the overload protection element.
Description
The present invention relates to a kind of single-phase circuit breaker, it has one at least can be by the switching mechanism of an overload trip element startup, can be at least one, preferably two such single-phase circuit breakers link up, the mode that connects can make when one of them circuit breaker overload, and each utmost point of all circuit breakers all disconnects.If necessary, can also add that the current range that includes executive component and the electric current dial that links to each other with this executive component is provided with device.
Traditional circuit breaker has a specific load current value, and this load current value is just predefined by the suitable structural design of suitable material selection and overload trip element in manufacture process, and can not change again.Therefore, for the rated current of each expectation, all must make a kind of circuit breaker of particular type.
In view of such circuit breaker, expectation now provides a kind of ability that can regulate the circuit breaker rated current in similar mode to fuser motor etc.This improvement has the advantage that such engineering is made: can reduce the number of circuit breaker type, and user oneself can be in certain scope selects the rated current expected respectively for the different application occasion.
A kind of such circuit breaker is disclosed in EP-B1-338 250.The document has been described a kind of multi-phase circuit breaker, and its each utmost point path all is made up of independent circuit breaker.Therefore, each utmost point path all have separately switch contact and the breaker mechanism of these switch contacts of startup separately, and the overload of these breaker mechanisms of startup separately and short circuit trip component.In this case, each utmost point path connects mutually by this way: when one of them circuit breaker trip, other all utmost point paths all disconnect.
The overload trip element is formed by bimetal leaf, and the one end is fixed on the circuit breaker, and the bending of the bimetal leaf that the heating that the other end is then caused by monitored electric current causes is moved to breaker mechanism, and can make circuit breaker trip when touching.
For the adjusting that realizes expecting to load current value.The adjustment sheet of a wedge shape is set between the free end of the bimetal leaf of each independent switch and switching mechanism.So in order to start the tripping operation process, the free end of bimetal leaf need not move from its stop place to the whole distances the switching mechanism, and need only get final product by this total distance and the difference that between bimetal leaf and switching mechanism, has produced the chock thickness of effect.Effectively wedge shape thickness can pass through the plain mode realization of the conversion displacement of wedge shape adjustment sheet.
In order to realize this displacement, according to EP-B1-338 250, add a single middle fairlead, this fairlead all is identical to all utmost point paths.Each adjustment sheet all is suspended on this centre fairlead, makes them under the effect of connector, can do relevant moving mutually along the direction of action of bimetal leaf.
Middle fairlead all is installed in independently on each housing, makes it do horizontal displacement for the direction of action of bimetal leaf.Such result causes the chock surface also can do horizontal substantially moving for the direction of action of bimetal leaf.
Middle fairlead moves by the central operation element, and this central operation element is made the shape of cylindric rotating handle, is installed on the part of the same housing of fairlead in the middle of covering, and causes this element to pivot around axle along y direction.This pivot handle has a pin of installing prejudicially at its end towards middle fairlead, in the slotted hole in the middle of this pin is contained on the fairlead.
The major advantage that such design has is as follows:
Because all utmost point paths have all adopted shared middle fairlead, the assembly of multi-phase circuit breaker comprises two actions in itself: the first, and each switch all must be coupled to each other with other switch; The second, in this assembly, must embed shared middle fairlead.
Because adjustment sheet in fact is contained on the shared middle fairlead, when unassembled, also there is not adjustment sheet, so single switch single movement on one's own account.They must use together, but are not in order to protect independent lead.
In addition, under the state before the assembling, can not check single utmost point path respectively.In fact, the functional check of single utmost point path can only be under assembled state, and applying test current to a utmost point path in each case could realize.If find some utmost point path defectiveness in this process, this switch must be opened, and splits into single part (single switch and shared middle fairlead), and the single switch of combination must be replaced, and circuit breaker must be assembled once more.
In addition, owing to adopt shared middle fairlead, the number of poles in the circuit breaker is restricted.Therefore, for the number of poles of each expectation, must provide a specific middle fairlead.
Directly start breaker mechanism by bimetal leaf, cause following difficulty: when regular event, bimetal leaf is heated to 250 ℃.The part (often complex-shaped and considerably many) of the breaker mechanism that directly contacts with bimetal leaf must be by the made with suitable temperature resistance, thereby must be with expensive plastics or metal manufacturing.In addition, the direct startup of breaker mechanism also causes the resistance to vibration and impact to descend, because breaker mechanism is directly passed in the vibration of bimetal leaf.
Adjustment sheet is suspended on the connector that is installed together with middle fairlead strictness with wedge shape, makes these connectors very accurately to install according to the distance of the expectation mutually and the seamed edge of middle fairlead.Any point dislocation of connector all can directly cause the variation of the stop place of voussoir mounted thereto, thereby causes the variation of the being quick on the draw property of the utmost point path that links with it inevitably.Therefore, fairlead must have very high requirement in the middle of making, and has caused high cost thus.
The objective of the invention is in order to obtain the single-phase circuit breaker of type a kind of specification, that told about in detail in front, it can move fully independently, also can be under the situation that does not add any parts, link up with the same single-phase circuit breaker of arbitrary desired number, constitute multi-phase circuit breaker.But also it is not wish that this circuit breaker impact and vibration have good resistance, and relative strict for the requirement of the position deviation of the tie point of adjustment sheet and middle fairlead.
According to the present invention, the realization of above-mentioned purpose is to be provided with the adjustment sheet of a wedge shape between overload trip element and suspension, and suspension acts on the switching mechanism; The adjustment sheet that is wedge shape by an elasticity flexibly spring firmly link to each other with middle fairlead; And fairlead is installed on the shell of circuit breaker in the middle of being, causes it to move along the direction of action of overload trip element.
Therefore, according to the present invention, each single-phase circuit breaker all has middle fairlead of oneself and adjustment sheet mounted thereto.Therefore, can not rely on other parts and move independently, that is to say, it can be used for protecting the wall scroll current-carrying conductor independently, and perhaps the same circuit breaker with arbitrary desired number links, to be used for protecting heterogeneous conducting system.
Bimetal leaf shows by the non-direct effect of suspension to switching mechanism, have only this shape fairly simple, need with temperature resistance made with material parts (bimetal leaf) seldom.And suspension reasonable in design has the weakening effect, has improved the resistance of circuit breaker to vibration greatly.
The spring that is selected to connect wedge shape adjustment sheet and middle fairlead can be offset the deviation of its mounting points on middle fairlead and adjustment sheet slightly, cause this foozle not cause adjustment sheet moving on its direction of action, and only be the torsion that has reduced not change effective width between overload trip element and suspension.
In further improvement of the present invention, provide and make the following possibility that becomes: the middle fairlead of middle fairlead with other circuit breaker that connects with this circuit breaker firmly linked to each other.
This has caused the adjusted in concert of the rated current of all single-phase circuit breakers of being coupled to each other, and causes thus on the one hand, and this adjusting can promptly realize, on the other hand, can guarantee that all single circuit breakers all are configured to identical rated current.
In contextual development of the present invention, in the end that connects with other circuit breaker of middle fairlead, the projection that is provided with groove and/or matches fully with this groove, this projection is passed the shell of circuit breaker.
The middle fairlead of such design permission circuit breaker is connected to each other together in the mode of tight lock, thereby need not be by other the help as adhesive, screw etc.
In this process, find, if projection and groove have the side, and along the direction of motion of middle fairlead with suitable angular movement, will be useful especially.
If the middle fairlead of two adjacent single circuit breakers is correctly located, they need only one by one lean, that is to say, the projection of fairlead injects in the groove of another middle fairlead in the middle of one of them, the connection of fairlead automatically forms the connection operation of middle fairlead that need not be independent in the middle of in this process.And this independent operation that is connected just is provided when the projection that provides has otch with groove part.
Below in conjunction with the preferred embodiment that accompanying drawing is described the present invention is done more detailed explanation.
Fig. 1 a is the end view according to single-phase circuit breaker of the present invention, and its upper shell is removed;
Fig. 1 b is the schematic diagram according to the circuit breaker of Fig. 1 a;
Fig. 1 c is that its upper shell is removed according to the end view of the amplification of the rated current trim of the circuit breaker of Fig. 1 a, 1b;
Fig. 2 is the schematic diagram according to the details of the middle fairlead of Fig. 1,2 circuit breaker and executive component;
Fig. 3 a is the schematic diagram of details that connects the middle fairlead of single-phase circuit breakers according to Fig. 1,2 three mutually;
Fig. 3 b, 3c are the end views of the rated current trim of the single-phase circuit breaker shown in L1 and the L3 among Fig. 3 a, and its upper shell is removed;
Fig. 4 a is the schematic diagram of the amplification of the middle fairlead of the single-phase circuit breaker shown in L1 and the L2 among Fig. 3 a; With
Fig. 4 b is the middle fairlead according to Fig. 4 a, illustrate in the mode identical with Fig. 4 a, but its projection is different with Fig. 4 a with the design of groove.
Can clearly be seen that by Fig. 1 a,, design in the mode similar to conventional circuit breaker according to single-phase circuit breaker of the present invention.It must comprise: two switching mechanisms 2 that connect screw thread terminals 14 and 15, overload trip element 1 and the short circuit tripping operation device 16 of monitored lead and can shift to the make position that moving contact 17 shows from Fig. 1 a open position.
In this circuit breaker, the monitored electric current first screw thread terminals of at first flowing through are successively by way of overload trip element 1, movable cable 19 and contact carrier 20, arrive moving contact 17, then, arrive short circuit tripping operation device 16 by way of fixed contact 18, at last to the second screw thread terminals.
Short circuit tripping operation device 16 is made in known manner, for example, forms by a solenoid and mobile armature thereof, and when suitable high short circuit current flows through, the contact carrier 20 of armature impact switch mechanism 2.
Overload trip element 1 comprises the bimetal leaf by monitored current flow heats.One end 21 of bimetal leaf is installed on the housing of circuit breaker, and the other end 22 keeps moving freely.Bimetal leaf bending during heating, thus end points 22 is moved along the direction shown in the arrow 23.If heating is enough violent, the free end 22 of bimetal leaf contacts with suspension 3 on acting on contact carrier 20 in motion process, orders about suspension 3 and moves along the direction of motion, causes switching mechanism 2 to respond thus.
Contact carrier 20 is stretched by spring 24 on the direction of the open position of moving contact 17 in advance.The minor shifts of the contact carrier 20 (illustrating) that the armature of short circuit tripping operation device 16 and/or overload trip element 1 cause by suspension 3 increases by spring 24, causes contact carrier 20 to turn to the open position of moving contact 17 fully.
The manual lever 25 that reaches (housing) outside is provided, can close circuit breaker by it, that is to say, can rotate back into contact carrier 20 make position of moving contact 17.
Housing according to circuit breaker of the present invention is designed to two parts in a known way, promptly comprises lower house 26 and upper shell 27 (seeing Fig. 1 b).
According to circuit breaker of the present invention, its special characteristic comprises the device of regulating the reaction sensibility of overload trip element 1, just a rated current trim that is shown specifically among Fig. 1 c.
The most important parts of this trim are adjustment sheets 4, and this adjustment sheet 4 is wedge shapes and is installed between overload trip element 1 (speaking by the book, is its free end 22) and the suspension 3 that suspension 3 acts on the switching mechanism 2.And, thereby provide one to be installed on the Shell of circuit breaker the middle fairlead 6 that can move along the direction shown in the arrow 28, that is to say that middle fairlead 6 can move along the direction of action (representing with arrow 23) of overload trip element 1.
The adjustment sheet 4 of wedge shape firmly links to each other with middle fairlead 6 by being contained in the elasticity spring 13 flexibly on the guide channel 29.Under the situation of the embodiment of the present invention that are described in the drawings, spring 13 is connected with middle fairlead 6 usefulness rivets with adjustment sheet 4, but should not be interpreted as limiting factor to this point, and the connection of other form as bonding, welding, all can be adopted.
Middle fairlead 6 moves along the mobile spring that causes 13 of the direction of action of overload trip element 1, i.e. moving along arrow 23,28, in guide rail 29, be deflected nearly 90 °, caused adjustment sheet 4 mobile with arrow 30 along the direction (representing) parallel with overload trip element 1.
In this design, the free end 22 of overload trip element 1 is in order to contact suspension 3 and switching mechanism 2 to be disconnected, need not be through the whole distances between its stop place and the suspension 3, but the distance of 3 of free end 22 and suspensions deducts the distance after the linear width of adjustment sheet 4.In order not hinder the motion of free end 22, adjustment sheet 4 must be able to as far as possible easily pivot, and for this reason, the elasticity of spring 13 must be good as much as possible.For this reason, spring 13 can become strip or fine strip shape with metal or plastic processing.
Because moving of above-mentioned adjustment sheet 4, its effective width can change at any given time, thereby changes the offset movement of free end 22 cut-off breaker mechanisms.The offset movement of free end 22 is relevant with monitored current's intensity at that time, thus the mobile current strength that adjusting is responded with it of adjustment sheet 4, and promptly the intensity of the rated current of overload trip element 1 becomes possibility.
For above-mentioned middle fairlead 6 is moved, provide executive component 5 (referring to Fig. 2).This executive component 5 is designed to columned rotating handle, and is installed on the Shell of circuit breaker, and it can be pivoted around axle along y direction.
Rotation is regulated action (representing with arrow 32) and preferably is added on the executive component 5 with screwdriver, converts the transverse movement along the direction of action of overload trip element 1 of centre fairlead 6 to by pin 7 and elongated hole 31.
In order to see actual value from the rated current in the outside, electric current dial 33 has been installed on the outer wall of shell, the installation site is in the location (seeing Fig. 1 b) of described executive component 5, and this electric current dial 33 is configured on the executive component 5.
So far, described circuit breaker remains single-phase device, that is to say, is suitable for an only phase current carrying conductor of monitoring.Yet under most application scenarios, that circuit breaker all is designed to is heterogeneous, make it can monitor heterogeneous current carrying conductor simultaneously.In common three-phase system, generally adopt two-phase, three-phase or four phase circuit breakers (are used for respectively monitoring and comprise L and N, L
1, L
2And L
3Or L
1, L
2, L
3System with N).
According to the present invention, the design of circuit breaker should be satisfied: the mode that a plurality of these single-phase circuit breakers connect mutually during a circuit breaker overload, all disconnects each utmost point of whole circuit breakers therein.As mentioned above, according to the present invention, each circuit breaker can both move fully independently, so only need just can constitute a multi-phase circuit breaker to arranged side by side placement of a plurality of circuit breakers.
Connection between the single switch mechanism 2 often can be by each circuit breaker the mechanical connection of connecting rod 25 (being used as hand switch) realize at an easy rate.As above-mentioned substitute mode, can provide a finger piece (for the sake of clarity to each switching mechanism 2, not shown), this finger piece passes its circuit breaker and the housing of adjacent circuit breaker stretches out from one side, and link to each other, and therefore when its switching mechanism responds, adjacent circuit breaker is also moved with the switching mechanism 2 of adjacent circuit breaker.A plurality of single-phase circuit breakers are placed mutually side by side with the situation shown in Fig. 1 and 2 as mentioned above, can cause each utmost point path of the multi-phase circuit breaker made by this way rated current trim that oneself is all arranged, that be separated with other utmost point path, for multi-phase circuit breaker, this is the design of a simple and feasible beyond doubt, but because the user must regulate each utmost point path respectively, this is actually infeasible.
Therefore, the present invention is connected the middle fairlead 6 of the circuit breaker of mutual connection securely.In order to make this connection, the zone of middle fairlead 6 must be able to arrive the shell of related switch, promptly for example, and must porose 10 on these shells.
Say in principle, can select the connected mode of any desired type, for example, that the interconnecting of two adjacent middle fairleads 6 can be adopted is bonding, welding, riveted joint or adding optional feature on the fairleads 6 in the middle of two, as pin, tightly locks connection.
A kind of particularly preferred connected mode based on three-phase breaker will be done more detailed explanation to this below shown in Fig. 3,4.
Middle the fairlead 6 of middle circuit breaker L2 has a projection 12 at its end towards circuit breaker L1, protruding 12 holes of passing on the lower house 26 10, and pass the shell of circuit breaker L2.The upper shell 27 of circuit breaker L1 has a hole 10 similarly, and as circuit breaker L1, when L2 is linked together, the top in the hole 10 of L2 is dropped in the hole 10 of L1.Therefore, projection 12 is also passed the housing of circuit breaker L1, and puts in its inside.
The middle fairlead 8 of circuit breaker L1 have one with projection 12 grooves that fit like a glove 11, projection 12 is inserted grooves, by this method, middle fairlead 6,8 is connected to each other in tight lock mode.
The middle fairlead 6,9 of circuit breaker L2, L3 also is connected to each other with same design size, promptly by fit like a glove first in the middle of the groove 11 of fairlead in the middle of the projection 12 of fairlead and second.With being connected relatively of the middle fairlead 6,8 of circuit breaker L1, L2, it is protruding 12 that 9 of middle the fairleads of circuit breaker L3 have, and 6 of the middle fairleads of circuit breaker L2 have groove 11.
Certainly, this protruding 12 and the design of groove 11 should not be regarded as a kind of qualification, for example: when side 34 and another side formed an acute angle, from schematic diagram, projection 12 and groove 11 just can form triangle.Also have a selection to be, fairlead 6 was more and more wideer inwards from the end in the middle of projection 12 was designed to, and groove 11 correspondingly is designed to degree of depth increase more and more wideer (referring to Fig. 4 b).Yet such design need be connected to each other with fairlead 6,8,9 in the middle of the operation handlebar that separates.
Firm connection between the independent middle fairlead 6,8,9 makes when fairlead moves in the middle of one of them, can regulate all circuit breaker L1, L2, the rated current scope of L3 simultaneously.Therefore, just needn't provide their executive components 5 separately to the rated current trim of each circuit breaker L1, L2, L3.In three-phase breaker shown in Figure 3, outside circuit breaker L1, L3 have just saved executive component 5.And also cause further, need not slotted hole 31 on the middle fairlead 8,9, (circuit breaker L1, L3) outside also need not be installed electric current dial 33.
Further, no longer repeat to increase the number of utmost point path, thereby make the circuit breaker of two outsides need not have the ability of the more circuit breakers of connection again.(for circuit breaker 11 are its lower houses 26 to the shell body of their exposure, to circuit breaker 13 are its upper shells 27) just do not have hole 10 thus, and further, 8,9 of its middle fairleads have a projection 12 (middle fairlead 9) or only have a groove 11 (middle fairlead 8).
Claims (4)
1. single-phase circuit breaker contains a switching mechanism (2) that can be started by an overload trip element (1) at least; Can continue and at least one, preferably two these single-phase circuit breakers connect, and the mode of connection makes that each utmost point of all circuit breakers all disconnects when one of them circuit breaker overload; If necessary, can also add that the current range of being made up of executive component (5) and the electric current dial (33) that links to each other with this executive component (5) is provided with device; It is characterized in that: the adjustment sheet (4) of a wedge shape is set, and suspension (3) acts on the switching mechanism (2) between overload trip element (1) and suspension (3); The adjustment sheet of wedge shape (4) by elasticity flexibly spring (13) firmly be connected with middle fairlead (6); Middle fairlead (6) is installed on the housing of circuit breaker, can move along the direction of action of overload trip element (1).
2. single-phase circuit breaker as claimed in claim 1 is characterized in that: middle fairlead (6) can with firmly be connected with the middle fairlead (8,9) of joining other circuit breaker of this single-phase circuit breaker.
3. single-phase circuit breaker as claimed in claim 2, it is characterized in that: middle fairlead (6,8,9) has a groove (11) and/or a projection (12) that fits like a glove and pass Shell of circuit breaker with groove (11) in its end towards another joining circuit breaker.
4. single-phase circuit breaker as claimed in claim 3 is characterized in that: projection (12) and groove (11) have the side (34) rectangular with the direction of motion of middle fairlead (6,8,9).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT1190A/1997 | 1997-07-10 | ||
| AT1190A/97 | 1997-07-10 | ||
| AT0119097A AT405111B (en) | 1997-07-10 | 1997-07-10 | SINGLE PHASE CIRCUIT BREAKER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1205536A true CN1205536A (en) | 1999-01-20 |
| CN1110831C CN1110831C (en) | 2003-06-04 |
Family
ID=3508563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98115470A Expired - Fee Related CN1110831C (en) | 1997-07-10 | 1998-07-09 | Single-phase circuit breaker |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0890968B1 (en) |
| CN (1) | CN1110831C (en) |
| AR (1) | AR010930A1 (en) |
| AT (2) | AT405111B (en) |
| AU (1) | AU731133B2 (en) |
| CZ (1) | CZ295513B6 (en) |
| DE (1) | DE59812199D1 (en) |
| ES (1) | ES2231955T3 (en) |
| HK (1) | HK1017944A1 (en) |
| HU (1) | HU222298B1 (en) |
| MY (1) | MY116194A (en) |
| PL (1) | PL187471B1 (en) |
| SK (1) | SK284936B6 (en) |
| TN (1) | TNSN98131A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101436494B (en) * | 2007-11-15 | 2013-02-27 | 富士电机机器制御株式会社 | Breaker |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6661329B1 (en) * | 2002-06-13 | 2003-12-09 | Eaton Corporation | Adjustable thermal trip assembly for a circuit breaker |
| FR2894382B1 (en) * | 2005-12-06 | 2008-04-25 | Schneider Electric Ind Sas | ADJUSTABLE THERMAL ACTUATOR FOR CUTTING DEVICE |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1466258A (en) * | 1973-10-04 | 1977-03-02 | Dorman Smith Switchgear Ltd | Electrical circuit breakers |
| DE3812934A1 (en) * | 1988-04-19 | 1989-11-02 | Sursum Elektrizitaetsgesellsch | MULTI-PHASE CIRCUIT BREAKER |
-
1997
- 1997-07-10 AT AT0119097A patent/AT405111B/en not_active IP Right Cessation
-
1998
- 1998-06-24 DE DE59812199T patent/DE59812199D1/en not_active Expired - Lifetime
- 1998-06-24 ES ES98890179T patent/ES2231955T3/en not_active Expired - Lifetime
- 1998-06-24 AT AT98890179T patent/ATE281695T1/en not_active IP Right Cessation
- 1998-06-24 PL PL98327001A patent/PL187471B1/en not_active IP Right Cessation
- 1998-06-24 EP EP98890179A patent/EP0890968B1/en not_active Expired - Lifetime
- 1998-06-25 HU HU9801453A patent/HU222298B1/en not_active IP Right Cessation
- 1998-06-29 CZ CZ19982075A patent/CZ295513B6/en not_active IP Right Cessation
- 1998-06-30 AU AU73965/98A patent/AU731133B2/en not_active Ceased
- 1998-07-01 SK SK909-98A patent/SK284936B6/en not_active IP Right Cessation
- 1998-07-09 CN CN98115470A patent/CN1110831C/en not_active Expired - Fee Related
- 1998-07-09 MY MYPI98003126A patent/MY116194A/en unknown
- 1998-07-10 TN TNTNSN98131A patent/TNSN98131A1/en unknown
- 1998-07-10 AR ARP980103358A patent/AR010930A1/en active IP Right Grant
-
1999
- 1999-06-30 HK HK99102779A patent/HK1017944A1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101436494B (en) * | 2007-11-15 | 2013-02-27 | 富士电机机器制御株式会社 | Breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0890968B1 (en) | 2004-11-03 |
| AU7396598A (en) | 1999-01-21 |
| CN1110831C (en) | 2003-06-04 |
| ATA119097A (en) | 1998-09-15 |
| PL187471B1 (en) | 2004-07-30 |
| HUP9801453A2 (en) | 1999-04-28 |
| MY116194A (en) | 2003-11-28 |
| TNSN98131A1 (en) | 2000-12-29 |
| HU222298B1 (en) | 2003-06-28 |
| HUP9801453A3 (en) | 2000-05-29 |
| AU731133B2 (en) | 2001-03-22 |
| HK1017944A1 (en) | 1999-12-03 |
| CZ295513B6 (en) | 2005-08-17 |
| ES2231955T3 (en) | 2005-05-16 |
| SK90998A3 (en) | 1999-02-11 |
| CZ207598A3 (en) | 1999-06-16 |
| HU9801453D0 (en) | 1998-08-28 |
| AR010930A1 (en) | 2000-07-12 |
| AT405111B (en) | 1999-05-25 |
| DE59812199D1 (en) | 2004-12-09 |
| EP0890968A2 (en) | 1999-01-13 |
| EP0890968A3 (en) | 1999-11-17 |
| SK284936B6 (en) | 2006-02-02 |
| PL327001A1 (en) | 1999-01-18 |
| ATE281695T1 (en) | 2004-11-15 |
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