CN203456399U - Under-voltage release device for circuit breaker - Google Patents
Under-voltage release device for circuit breaker Download PDFInfo
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- CN203456399U CN203456399U CN201320117005.3U CN201320117005U CN203456399U CN 203456399 U CN203456399 U CN 203456399U CN 201320117005 U CN201320117005 U CN 201320117005U CN 203456399 U CN203456399 U CN 203456399U
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Abstract
Disclosed in the utility model is an under-voltage release device for a circuit breaker. The under-voltage release device comprises a failure device and a failure releasing device. To be specific, the failure device is configured to enable the under-voltage release device to enter a failure state when the under-voltage release device is not in an under-voltage state and enable the under-voltage release device to be maintained in the failure state; and the failure releasing device is configured to eliminate the change on the under-voltage release device by the failure device when the under-voltage release device is not in an under-voltage state after the failure device enables the under-voltage release device to enter the failure state, so that the under-voltage release device is separated from the failure state.
Description
Technical field
The utility model relates to a kind of circuit breaker, especially in, low-voltage circuit breaker, particularly relate to a kind of under-voltage deprotection mechanism of circuit breaker.
Background technology
The circuit breaker of being furnished with undervoltage tripping device, distribution system once, there is under-voltage or decompression state in secondary circuit, causes undervoltage trip coil terminal voltage to be reduced to 35% when following of rated voltage, undervoltage trip coil should allow the reliable separating brake of circuit breaker.Referring to Fig. 1, undervoltage tripping device 100 comprises under-voltage coil controller 102 and undervoltage trip coil 104.The main element of undervoltage trip coil 104 is electromagnet, spring and moving iron core (all not shown).When the charged normal operation of undervoltage tripping device 100, under-voltage coil controller 102 is controlled electromagnet to the spring energized spring-compressed that makes, thereby so spring can not make circuit breaker keep "on" position to the moving iron core application of force.Otherwise when undervoltage tripping device 100 dead electricity, electromagnet loses magnetic force, compressed spring drives the separating brake buckle application of force of moving iron core to circuit breaker in stretching process, makes breaker open operation.As can be seen here, once undervoltage tripping device 100 has been installed, circuit breaker, when power-off debugging or user have a power failure annual test, just cannot divide circuit breaker by normal occlusion, unless just undervoltage tripping device 100 is removed and can be carried out the operation of normal manually splitting or integrating.Because under power failure state, the thread off moving iron core of circle 104 of under-voltage line is pushed down the separating brake buckle of breaker mechanism always, causes circuit breaker always in gate-dividing state and can not normal running.Because existing undervoltage tripping device has above shortcoming, a kind of energy of industrial demand needn't be removed but can lose efficacy temporarily and remove the undervoltage tripping device losing efficacy.
Utility model content
In order to address the above problem, the utility model provides a kind of undervoltage tripping device for circuit breaker, comprising:
Disabling device; With releasing disabling device, wherein: described disabling device is configured to make described undervoltage tripping device to enter failure state; Be configured to make after described undervoltage tripping device enters failure state, when described undervoltage tripping device is not under-voltage, can remove the variation that described disabling device causes described undervoltage tripping device when described disabling device with described releasing disabling device.
As a kind of improvement, the undervoltage tripping device in aforementioned means also comprises at least one moving iron core.
As a kind of improvement, moving iron core in aforementioned means is configured to reciprocally move, one of its movement locus definition is in described undervoltage tripping device and be parallel to the line segment of described undervoltage tripping device body length direction, described line segment comprises second point from high to low and thirdly, when described undervoltage tripping device is under-voltage, described moving iron core be pushed to or be maintained at described line segment thirdly and make described breaker open operation; Be configured to, when described undervoltage tripping device is under-voltage, can make described moving iron core from the second point that thirdly moves to described line segment of described line segment with described disabling device, thereby make described undervoltage tripping device enter failure state.
As a kind of improvement, 4. devices according to claim 3 in aforementioned means, wherein said releasing disabling device be configured to when described disabling device described moving iron core from described while thirdly moving on to described second point, can make described disabling device reset, make described moving iron core in when described undervoltage tripping device is under-voltage, be pushed to described line segment thirdly and make described breaker open operation and be able to from described, thirdly to be moved to described second point because of the effect of described disabling device, thereby make described undervoltage tripping device enter the state of failure state.
As a kind of improvement, the undervoltage tripping device in aforementioned means also comprises framework, under-voltage coil controller and undervoltage trip coil, and described framework is arranged between described under-voltage controller and described undervoltage trip coil, described disabling device is the microscler rigid structure being horizontally set on described framework, there is first end and the second end, described first end is positioned at outside described framework, can accept external force promote and make described disabling device in described framework between primary importance and the second place horizontal reciprocating move, when described undervoltage tripping device is not during in failure state, described disabling device is in described primary importance, described the second end is positioned at described framework, be configured to be able to the horizontal component of described external force is converted to and makes described moving iron core from the component vertically upward of the second point that thirdly moves on to described line segment of described line segment, when the second point of described moving iron core in described line segment, described disabling device is in the described second place, described releasing disabling device be configured such that described disabling device stop producing described in component vertically upward, and make described disabling device get back to described primary importance from the described second place.
As a kind of improvement, line segment in aforementioned means also comprises the first point higher than described second point, when described undervoltage tripping device is not under-voltage, described moving iron core is by the first point that thirdly moves on to or be maintained at described line segment from described line segment, thereby makes described breaker closing.
As a kind of improvement, the moving iron core in aforementioned means is provided with the first inclined-plane at the nearside of the second end in the face of described disabling device; The first end of described disabling device device is configured to be suitable for accept to press promotion, the second end of described disabling device device is provided with the second inclined-plane, described the first inclined-plane and described the second inclined-plane are configured to can relative contact slide, when described button is accepted external force promotion, the first inclined-plane described in described the second slope driving, thus described moving iron core the second point that thirdly moves on to described line segment from described line segment; Described releasing disabling device comprises interlock and back-moving spring; Described interlock comprises the first buckle and the second buckle, the first end of described the first buckle is fixed on the top on described the second inclined-plane of the second end of described disabling device, the first end of the second buckle be rotatably mounted to described framework inner side, when external force promotes described disabling device and arrives the described second place, the mutual interlock of the second end of the second end of described the first buckle and described the second buckle, thus make described disabling device maintain the described second place; With
Described back-moving spring is arranged between the above button of described disabling device and described framework, described the first buckle and described the second buckle are configured to after mutual interlock can be when after described moving iron core is maintained at the second point of described line segment, described undervoltage tripping device be switched on again, what described moving iron core produced toward first movement of described line segment vertically goes up component mutually and removes interlock, described disabling device is configured to when described the first buckle and described the second buckle releasing interlock, must be because the effect of described the first spring be from described second site reversion to described primary importance.
As another, improve, the second end upper surface of the first buckle in aforementioned means has the first hook shape projection; The second end lower surface of described the second buckle has the second hook shape projection; Hook shape projection with described the first hook shape projection and described second and be configured to disengageable mutual interlock.
As another, improve, the releasing disabling device in aforementioned means also comprises that iron core position maintains spring, is arranged in the second end upper surface and the defined space of described framework inner surface of described the second buckle.
As another, improve, the first end of the disabling device in aforementioned means has knob.
Undervoltage tripping device of the present utility model can lose efficacy temporarily, and after undervoltage tripping failure of apparatus, what when debugging or annual test, energy was safe and reliable carries out splitting or integrating operation to circuit breaker.Debugging or after annual test completes, has two kinds of modes allow reset of breaker.First, can manually allow reset of breaker to recover the function of undervoltage tripping device.Secondly, if not hand-reset circuit breaker, while working after undervoltage tripping device is charged, undervoltage tripping device also can recover its function automatically.Due to deft design, device of the present utility model also has volume little, and part is few, operates the advantages such as reliable.
Accompanying drawing explanation
Fig. 1 is the stereogram of a kind of undervoltage tripping device of the prior art.
Fig. 2 is according to the stereogram of undervoltage tripping device of the present utility model embodiment.
Fig. 3 A is the front view of the embodiment in Fig. 2.
Fig. 3 B is the end view of the embodiment in Fig. 2.
Fig. 4 is the profile of the embodiment in Fig. 3 B.
Fig. 5 is the three-dimensional cutaway view of the embodiment in Fig. 2.
Fig. 6 is the three-dimensional cutaway view of the embodiment in Fig. 2.
Fig. 7 is the continuous action schematic diagram of the embodiment in Fig. 2.
Fig. 8 is embodiment in Fig. 2 schematic diagram in circuit breaker system.
Fig. 9 A-9C is the stereogram under different visual angles and state according to another embodiment of undervoltage tripping device of the present utility model.
Figure 10 is according to the stereogram of another embodiment of undervoltage tripping device of the present utility model.
Figure 11 A-11B is the stereogram under different visual angles while not losing efficacy of the undervoltage tripping device in Figure 10.
Figure 12 is the continuous action schematic diagram of the undervoltage tripping device in Figure 10.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is further described.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Referring to Fig. 2, Fig. 3 A, Fig. 3 B and Fig. 7, an embodiment of undervoltage tripping device of the present utility model adds the interim inefficacy of under-voltage coil and decontrol in the middle of the under-voltage coil controller 102 of existing undervoltage tripping device 100 and undervoltage trip coil 104.Undervoltage tripping device 200 in the present embodiment is for the circuit breaker 800 shown in Fig. 8.Circuit breaker 800 comprises separating brake buckle 802, and when separating brake buckle 802 is upwards pulled, circuit breaker 800 is in "on" position, and when separating brake buckle 802 is pulled downwards, circuit breaker 800 is in gate-dividing state.Undervoltage tripping device 200 from top to bottom comprises under-voltage coil controller 206, under-voltage coil is interim lost efficacy and decontrol 202 and undervoltage trip coil 204.The main element of undervoltage trip coil 204 comprises electromagnet (not shown), spring (not shown) and moving iron core 702.Moving iron core 702 be bar-shaped rigid body, is configured in undervoltage trip coil 204, to pump, and its movement locus defines one in described undervoltage tripping device 200 bodies and is parallel to the line segment of described undervoltage tripping device 200 body length directions.Described line segment comprises first 704(Fig. 7 (3) (4) from high to low), second point 706(Fig. 7 (2)) and 708(Fig. 7 (1) thirdly).Under-voltage coil controller 206 is configured to can control the described electromagnet application of force when undervoltage tripping device 200 is not under-voltage and compresses described spring, thereby moving iron core 702 thirdly 708 is moved on to or be maintained at 1: 704 of described line segment from described line segment.Now moving iron core 702 is not to the separating brake button 802 plate application of forces, and described circuit breaker 800 is in "on" position.Otherwise, when undervoltage tripping device 200 is under-voltage, under-voltage coil controller 206 makes described electromagnet lose magnetic force and not recompress described spring, thirdly 708 of described line segment is pushed or maintained to described spring to moving iron core 702 in the process stretching, now moving iron core 702 continues downwards, to separating brake buckle 802 application of forces, to make described circuit breaker 800 in gate-dividing state.
The interim inefficacy of under-voltage coil and decontrol 202 comprise framework 402, disabling device and releasing disabling device.Referring to Fig. 4～6, framework 402 is arranged between described under-voltage coil controller 206 and described undervoltage trip coil 204, and its structure makes disabling device and remove disabling device to be operationally placed in wherein.Disabling device 404 is microscler rigid structure, has first end 406 and the second end 408, and first end 406 is positioned at outside framework 402, and the second end 408 is positioned at framework 402, and framework 402 1 sides are provided with opening.First end 406 is configured to be suitable for accepting to press the button 426 of promotion, and button 426 can be accepted external force and promotes and disabling device 404 is moved through described opening horizontal reciprocating with respect to framework 402 between primary importance (Fig. 7 (1) (4)) and the second place (Fig. 7 (2) (3)).When undervoltage tripping device 200 is not during in failure state, described disabling device 404 is in described primary importance, and when the second point 706 of described moving iron core 702 in described line segment, described iron core lifting apparatus 404 is in the described second place.Moving iron core 702 is provided with the first inclined-plane 714 at the nearside of the second end 408 in the face of iron core lifting apparatus 404, the second end 408 of described iron core lifting apparatus 404 is provided with the second inclined-plane 412, and described the first inclined-plane 714 and described the second inclined-plane 412 are configured to can relative contact slide.When described button 426 is accepted external force promotion, described the second inclined-plane 412 promotes described the first inclined-plane 714, the cooperation on two inclined-planes is converted to horizontal component to make described moving iron core 702 from thirdly 708 component vertically upward that move on to the second point 706 of described line segment of described line segment, thus described moving iron core 702 thirdly 708 second points 706 that move on to described line segment from described line segment.Described disabling device is configured to, when described undervoltage tripping device 200 no power, can make described undervoltage tripping device 200 enter failure state, and can make described undervoltage tripping device 200 maintain failure state.When the control loop no power of described undervoltage tripping device 200, disabling device can make described moving iron core 702 from thirdly 708 second points 706 that move to described line segment of described line segment, and can make described moving iron core 702 maintain the second point 706 of described line segment, thereby make described undervoltage tripping device 200 enter and maintain failure state.
Releasing disabling device is arranged at is located at framework 402 inside, comprises that interlock 414, back-moving spring 422 and iron core position maintain spring 424.Interlock 414 comprises the first buckle 416 and is the second buckle 418.The first end of described the first buckle 416 is fixed on the top on described the second inclined-plane 412 of the second end 408 of described disabling device 404.The first end of the second buckle 418 is rotatably mounted in described framework 402.Back-moving spring 422 is arranged between described releasing disabling device 410 the above button 426 and described framework 402.In the space of the second end top of the second buckle 418 and the below of described framework 402, an iron core position that is connected the two is installed and maintains spring 424.The lower surface of the second end of the second buckle 418 is provided with and hooks shape projection, the upper surface of the second end of described the first buckle 416 is provided with and hooks shape projection, when described the first buckle 416 advances to the right, hook shape projection on hook shape on described the first buckle 416 projection and described the second buckle 418 maintains in described back-moving spring 422 and described iron core position under the effect of spring 424 and forms stable interlocking pattern, thereby described moving iron core 702 is maintained to the second point 706 of described line segment.The mutual interlock of the second end (seeing Fig. 7 (2)) due to the second end 408 and described second buckle 418 of described the first buckle 416, makes described disabling device 404 maintain the described second place.Described releasing disabling device 410 be configured to can with described disabling device 404 Collaboration under the described second place, and continue to produce and to be enough to offset that undervoltage tripping device 200 produces under under-voltage condition described moving iron core 702 is pushed to the reverse component of thirdly 708 the component vertically downward of described line segment.Described the first buckle 416 and described the second buckle 418 are configured to after mutual interlock can be when being maintained at the under-voltage coil controller 206 of the rear described undervoltage tripping device 200 of second point 706 of described line segment and switching on again when described moving iron core 702, described moving iron core 702 moves produced component vertically upward and removes interlock toward 1: 704 of described line segment.Described disabling device 404 is configured to when described the first buckle 416 and described the second buckle 418 are removed interlock, and the effect because of described back-moving spring 422 of obtaining is from described second site reversion to described primary importance.Described releasing disabling device is configured to make after described undervoltage tripping device 200 enters failure state when described disabling device, when the control loop of undervoltage tripping device 200 is switched on again, can remove the variation that described disabling device causes undervoltage tripping device 200, thereby make institute's undervoltage tripping device 200 devices depart from failure state, make the state of undervoltage tripping device 200 in being brought into play the due function of undervoltage tripping device 200 and being able to enter because of the effect of described disabling device again failure state.
Fig. 7 (1)～(4) have illustrated the continuous action mode of the present embodiment.To be that described undervoltage trip coil is interim lost efficacy and decontrol 202 not under electriferous state Fig. 7 (1), attaches it on circuit breaker 800, and described moving iron core 702 can be depressed separating brake buckle 802.Under this state, even if separating brake buckle 802 is up pulled, after described circuit breaker 800 closes a floodgate, undervoltage tripping device 200 still can make circuit breaker 800 separating brake immediately, and this is the normal effect of undervoltage tripping device of the prior art just.For undervoltage tripping device 200 was temporarily lost efficacy, described button 426 application of forces are moved to the described second place (Fig. 7 (2)) by described disabling device 404 from described primary importance (Fig. 7 (1)), at the same time, described the second inclined-plane 412 promotes described the first inclined-planes 714, the thirdly 708(Fig. 7 (1) by described moving iron core 702 from described line segment) be lifted to second point 706(Fig. 7 (2) of described line segment).Now, described undervoltage tripping device 200 enters temporary transient failure state (Fig. 7 (2)), now can be safely to circuit breaker 800 close a floodgate, sub-switching operation.After debugging or having overhauled, there are two kinds of modes can remove the failure state of undervoltage tripping device 200.
First kind of way is manually to remove and lost efficacy.In order to coordinate manual releasing, lost efficacy, moving iron core 702 is configured to its lower end and is suitable for accepting the power of being executed when separating brake buckle 802 is upwards pulled, thereby the lower surface application of force of the upper end that makes iron core 702 to the second buckle 418, make the second buckle 418 to move around first end clockwise, thereby compression iron core location dimension is held spring 424.Manually removed while losing efficacy, with hand, upwards pull separating brake buckle 802,802 pairs of described moving iron cores 702 of separating brake buckle are the application of force upwards, until described moving iron core 702 arrives first 704(Fig. 7 (3) of described line segment).Described moving iron core 702 rises in 1: 704 process of described line segment the lower surface of described the second buckle 418 application of force that makes progress, compress described iron core position and maintain spring 424, thereby make described the first buckle 416 and described the second buckle 418 remove interlocking pattern.Now, described back-moving spring 422 expansions, make described disabling device 404 return described primary importance (Fig. 7 (4)) from the described second place.
The second way is to automatically terminate inefficacy.If forgetting manual releasing after debugging or annual test lost efficacy, when 200 normal operation of undervoltage tripping device, the moment that undervoltage trip coil 204 is charged, described moving iron core 702 also can be by upwards lifting, until described moving iron core 702 arrives first 704(Fig. 7 (3) of described line segment).Described moving iron core 702 rises in 1: 704 process of described line segment the lower surface of described the second buckle 418 application of force that makes progress, compress described iron core position and maintain spring 424, thereby make described the first buckle 416 and described the second buckle 418 remove interlocking pattern.Now, described back-moving spring 422 expansions, make described iron core position lifting apparatus 404 return described primary importance (Fig. 7 (4)) from the described second place.No matter be manually to remove and lost efficacy or automatically terminated inefficacy, described undervoltage tripping device 200 is all returned to the state of normal operation.
Fig. 9 A-9C is another embodiment of the present utility model, and the undervoltage tripping device in the present embodiment also comprises the interim inefficacy of undervoltage trip coil, under-voltage coil controller and under-voltage coil and decontrol 900.The interim inefficacy of under-voltage coil and decontrol 900 in the present embodiment also comprise framework, disabling device and releasing disabling device.Framework in the present embodiment and disabling device are substantially similar with last embodiment, and disabling device one end in framework is provided with the second inclined-plane 912.Yet, remove disabling device significantly different.Releasing disabling device in the present embodiment comprises interlock, electromagnet 910, electromagnet couple axle 908 and back-moving spring (not shown, its setting and last embodiment are roughly the same).Interlock in the present embodiment comprises spring 902, blocking lever 904 and interlocking draw-in groove 906.The first end of described spring 902 is connected with described framework, the second end of described spring 902 is connected with the first end of described blocking lever 904, the second end of described blocking lever 904 is connected with the first end of electromagnet couple axle 908, and the second end of electromagnet couple axle 908 is connected with electromagnet 910.Blocking lever 904 is configured to suitable radian, and its lower edge can form disengageable stinging and state with interlocking draw-in groove 906 under the tension force effect of spring 902.Interlocking draw-in groove 906 be the ring-shaped groove on the appropriate location in the middle of knob 906 on iron core lifting apparatus and framework, can with disengageable the stinging and state of blocking lever 904 formation.Electromagnet 910 is fixed on framework, the rotatable electromagnet couple axle 908 of its magnetic force, thus rotate blocking lever 904.Electromagnet couple axle 908 is arranged on framework rotationally, parallel with the direction of motion of iron core lifting apparatus.
The continuous action mode of the present embodiment also can be by Fig. 7 (1)～(4) explanation.To be that undervoltage trip coil is interim lost efficacy and decontrol 900 not under electriferous state Fig. 7 (1), attach it on pressure or low-voltage circuit breaker, moving iron core is depressed separating brake buckle, under this state, after described breaker closing, understand separating brake immediately, this is the normal effect of circuit breaker of the prior art.
For described undervoltage tripping device was temporarily lost efficacy, described button 926 application of forces are moved to the second place (Fig. 7 (2)) by described disabling device from primary importance (Fig. 7 (1)).The second inclined-plane 912 of disabling device promotes the first inclined-plane on moving iron core, the thirdly 708(Fig. 7 (1) by described moving iron core from described line segment at the same time) be lifted to second point 706(Fig. 7 (2) of described line segment).When described button 926 is stressed, make described disabling device move to the described second place (Fig. 7 (2)) from described primary importance (Fig. 7 (1)).Described blocking lever 904 is under the pulling force effect of described spring 902, and when described blocking lever 904 passes through interlocking draw-in groove 906, both become stable interlocking pattern, thereby described moving iron core are maintained to the second point 706 of described line segment.Now, described undervoltage tripping device enters temporary transient failure state, can be safely to circuit breaker close a floodgate, sub-switching operation.After debugging or having overhauled, also there are two kinds of modes can remove the failure state of undervoltage tripping device.
First kind of way is manually to remove and lost efficacy.With hand, to pull clockwise described blocking lever 904, make described blocking lever 904 leave described interlocking draw-in groove 906 and remove interlocking pattern.Now, described back-moving spring expansion, makes described iron core position lifting apparatus return described primary importance (Fig. 7 (4)) from the described second place.
The second way is to automatically terminate inefficacy.If forgetting manual releasing after debugging or annual test lost efficacy, when undervoltage tripping device works, the moment that undervoltage trip coil is charged, described electromagnet 910 is energization action also, its magnetic force band motor magnet couple axle 908 makes described blocking lever 904 to rotate clockwise, makes described blocking lever 904 leave described interlocking draw-in groove 906 and remove interlocking pattern.Now, described back-moving spring expansion, makes described disabling device return described primary importance (Fig. 7 (4)) from the described second place.Now, described moving iron core also can be by upwards lifting, until described moving iron core arrives first 704(Fig. 7 (3) of described line segment).No matter be manually to remove and lost efficacy or automatically terminated inefficacy, described undervoltage tripping device is all returned to the state of normal operation.
Figure 10 is another embodiment of the present utility model, and the undervoltage tripping device in the present embodiment also comprises the interim inefficacy of undervoltage trip coil, under-voltage coil controller and under-voltage coil and decontrol 1000.Under-voltage unhook coil comprises moving iron core 1202.The interim inefficacy of under-voltage coil and decontrol 1000 in the present embodiment also comprise disabling device and remove disabling device.Disabling device comprises depression bar 1204 and knee 1004.Remove disabling device and comprise magnetic switch 1010, the first spring 1008 and the second spring 1012.The continuous action mode of the interim inefficacy of described under-voltage coil and decontrol 1000 can be by Fig. 7 (1)～(4) and Figure 12 (1)～(2) explanation.
Described knee 1004 is rigid structure, its first end fork, described moving iron core 1202 has the first adjacent radius and the second radius, the first radius of described moving iron core 1202 can enter in the middle of the fork of described knee 1004, but the second radius of described moving iron core 1202 is greater than the fork of described knee 1004 and can not enters wherein.The second end of described knee 1004 extends to depression bar 1204 belows of described magnetic switch 1010, the second end application of force that described depression bar 1204 can be to described knee 1004, and the second end of described knee 1004 also can be to described depression bar 1204 application of forces.There is a turnover 1006 centre of the first end of described knee 1004 and the second end, and in turnover, 1006 places are connected with described framework 1002 rotationally.To the downward application of force of the second end of described knee 1004, the fork of the first end of described knee 1004 drives described moving iron core 1202 upwards to arrive as the position of Figure 12 (2).To the second end of described knee 1004 application of force that makes progress, the fork of the first end of described knee 1004 declines, thereby allows that described moving iron core 1202 declines, and arrives as the position of Figure 12 (1).The first end of described the first spring 1008 is connected between turnover 1006 places and the second end of described knee 1004, and the second end of described the first spring 1008 is connected on described framework 1002.Described magnetic switch 1010 comprises button 1014, the second spring 1012, depression bar 1204, permanent magnet (in magnetic switch 1010, not shown) and electromagnet (in magnetic switch 1010, not shown).
When described undervoltage tripping device was temporarily lost efficacy, to the downward application of force of described button 1014, drive described depression bar 1204 to be moved down into the position of Figure 12 (2), the magnetic force of described permanent magnet is enough to overcome the restoring force of described the first spring 1008 and described the second spring 1012 and described depression bar 1204 is maintained as the position of Figure 12 (2).The downward thrust that the second end of described knee 1004 is subject to described depression bar 1204 is rotated described knee 1004, and drive the first end of described knee 1004 to move up, thereby the fork of the first end of described knee 1004 upwards promotes described moving iron core 1202 and maintains the position of Figure 12 (2).Now, described undervoltage tripping device enters temporary transient failure state (Fig. 7 (2)), can be safely to circuit breaker close a floodgate, sub-switching operation, debugging or overhauled after, also have two kinds of modes can remove the failure state of undervoltage tripping device.
First kind of way is manually to remove and lost efficacy.When the state of undervoltage tripping device in Figure 12 (2), with hand with counterclockwise to the second end of described knee 1004 application of force that makes progress, coordinate described the first spring 1008 and described the second spring 1012 restoring force, make the second end of described depression bar 1204 be moved upwards up to the position of Figure 12 (1).Now, the first end of described depression bar 1204 declines, thereby allows that described moving iron core 1202 declines, and gets back to the position of Figure 12 (1).
The second way is to automatically terminate inefficacy.If forgetting manual releasing after debugging or annual test lost efficacy, when undervoltage tripping device works, the moment that undervoltage trip coil is charged, described electromagnet upwards drives described depression bar 1204, thereby with counterclockwise to the second end of described knee 1004 application of force that makes progress, coordinate described the first spring 1008 and described the second spring 1012 restoring force, also can make the second end of described depression bar 1204 be moved upwards up to the position of Figure 12 (1).Now, the first end of described depression bar 1204 declines, thereby allows that described moving iron core 1202 declines, and gets back to the position of Figure 12 (1).No matter be manually to remove and lost efficacy or automatically terminated inefficacy, described undervoltage tripping device is all returned to the state of normal operation.
Should be noted that and understand, in the situation that not departing from the desired spirit and scope of the present utility model of accompanying claim, can make various modifications and improvement to the utility model of foregoing detailed description.Therefore, the scope of claimed technical scheme is not subject to the restriction of given any specific exemplary teachings.
Claims (8)
1. for a undervoltage tripping device for circuit breaker, comprising:
Disabling device; With
Remove disabling device;
Described undervoltage tripping device also comprises at least one moving iron core, described moving iron core is configured to reciprocally move, one of its movement locus definition is in described undervoltage tripping device and be parallel to the line segment of described undervoltage tripping device body length direction, described line segment comprises second point from high to low and thirdly, when described undervoltage tripping device is under-voltage, described moving iron core be pushed to or be maintained at described line segment thirdly and make described breaker open operation, wherein:
Described disabling device is configured to, when described undervoltage tripping device is under-voltage, can make described moving iron core from the second point that thirdly moves to described line segment of described line segment, thereby can make described undervoltage tripping device enter failure state; With
Described releasing disabling device is configured to make after described undervoltage tripping device enters failure state, when described undervoltage tripping device is not under-voltage, can remove the variation that described disabling device causes described undervoltage tripping device when described disabling device.
2. device according to claim 1, wherein said releasing disabling device be configured to when described disabling device described moving iron core from described while thirdly moving on to described second point, can make described disabling device reset, make described moving iron core in when described undervoltage tripping device is under-voltage, be pushed to described line segment thirdly and make described breaker open operation and be able to from described, thirdly to be moved to described second point because of the effect of described disabling device, thereby make described undervoltage tripping device enter the state of failure state.
3. device according to claim 2, wherein:
Described undervoltage tripping device also comprises framework, under-voltage coil controller and undervoltage trip coil, and described framework is arranged between described under-voltage controller and described undervoltage trip coil;
Described disabling device is the microscler rigid structure being horizontally set on described framework, there is first end and the second end, described first end is positioned at outside described framework, can accept external force promote and make described disabling device in described framework between primary importance and the second place horizontal reciprocating move, when described undervoltage tripping device is not during in failure state, described disabling device is in described primary importance, described the second end is positioned at described framework, be configured to be able to the horizontal component of described external force is converted to and makes described moving iron core from the component vertically upward of the second point that thirdly moves on to described line segment of described line segment, when the second point of described moving iron core in described line segment, described disabling device is in the described second place,
Described releasing disabling device be configured such that described disabling device stop producing described in component vertically upward, and make described disabling device get back to described primary importance from the described second place.
4. device according to claim 3, wherein said line segment also comprises the first point higher than described second point, when described undervoltage tripping device is not under-voltage, described moving iron core is by the first point that thirdly moves on to or be maintained at described line segment from described line segment, thereby makes described breaker closing.
5. device according to claim 4, wherein:
Described moving iron core is provided with the first inclined-plane at the nearside of the second end in the face of described disabling device;
The first end of described disabling device device is configured to be suitable for accept to press promotion, the second end of described disabling device device is provided with the second inclined-plane, described the first inclined-plane and described the second inclined-plane are configured to can relative contact slide, when described button is accepted external force promotion, the first inclined-plane described in described the second slope driving, thus described moving iron core the second point that thirdly moves on to described line segment from described line segment;
Described releasing disabling device comprises interlock and back-moving spring;
Described interlock comprises the first buckle and the second buckle, the first end of described the first buckle is fixed on the top on described the second inclined-plane of the second end of described disabling device, the first end of the second buckle be rotatably mounted to described framework inner side, when external force promotes described disabling device and arrives the described second place, the mutual interlock of the second end of the second end of described the first buckle and described the second buckle, thus make described disabling device maintain the described second place; With
Described back-moving spring is arranged between the above button of described disabling device and described framework, described the first buckle and described the second buckle are configured to after mutual interlock can be when after described moving iron core is maintained at the second point of described line segment, described undervoltage tripping device be switched on again, what described moving iron core produced toward first movement of described line segment vertically goes up component mutually and removes interlock, described disabling device is configured to when described the first buckle and described the second buckle releasing interlock, must be because the effect of described the first spring be from described second site reversion to described primary importance.
6. device according to claim 5, wherein:
The second end upper surface of described the first buckle has the first hook shape projection;
The second end lower surface of described the second buckle has the second hook shape projection; With
Described the first hook shape projection and described second hooks shape projection and is configured to disengageable mutual interlock.
7. device according to claim 5, wherein said releasing disabling device also comprises that iron core position maintains spring, is arranged in the second end upper surface and the defined space of described framework inner surface of described the second buckle.
8. device according to claim 5, the first end of wherein said disabling device has knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320117005.3U CN203456399U (en) | 2013-03-14 | 2013-03-14 | Under-voltage release device for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320117005.3U CN203456399U (en) | 2013-03-14 | 2013-03-14 | Under-voltage release device for circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN203456399U true CN203456399U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320117005.3U Expired - Lifetime CN203456399U (en) | 2013-03-14 | 2013-03-14 | Under-voltage release device for circuit breaker |
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| Country | Link |
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| CN (1) | CN203456399U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051200A (en) * | 2013-03-14 | 2014-09-17 | 伊顿公司 | Undervoltage tripping device for circuit breaker |
| CN106941058A (en) * | 2017-04-10 | 2017-07-11 | 许胜� | A kind of breaker of this trip gear of trip gear and application |
-
2013
- 2013-03-14 CN CN201320117005.3U patent/CN203456399U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051200A (en) * | 2013-03-14 | 2014-09-17 | 伊顿公司 | Undervoltage tripping device for circuit breaker |
| WO2014139384A1 (en) * | 2013-03-14 | 2014-09-18 | 伊顿公司 | Under-voltage tripping device for circuit breaker |
| CN104051200B (en) * | 2013-03-14 | 2016-12-28 | 伊顿公司 | Undervoltage tripping device for chopper |
| CN106941058A (en) * | 2017-04-10 | 2017-07-11 | 许胜� | A kind of breaker of this trip gear of trip gear and application |
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