CN102290295B - Auxiliary trip device designed to be associated with circuit breaker unit - Google Patents
Auxiliary trip device designed to be associated with circuit breaker unit Download PDFInfo
- Publication number
- CN102290295B CN102290295B CN201110159229.6A CN201110159229A CN102290295B CN 102290295 B CN102290295 B CN 102290295B CN 201110159229 A CN201110159229 A CN 201110159229A CN 102290295 B CN102290295 B CN 102290295B
- Authority
- CN
- China
- Prior art keywords
- spring
- arm
- supporting bracket
- armature
- trip
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/12—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by voltage falling below a predetermined value, e.g. for no-volt protection
-
- 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
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/505—Latching devices between operating and release 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
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
- H01H71/0271—Mounting several complete assembled circuit breakers together
- H01H2071/0278—Mounting several complete assembled circuit breakers together with at least one of juxtaposed casings dedicated to an auxiliary device, e.g. for undervoltage or shunt trip
Abstract
The invention relates to an auxiliary trip device, which is capable of being connected to a circuit breaker unit, the auxiliary trip device comprises an operation mechanism (2) provided with a trip chaining designed to be effecting upon a trip latch of the circuit breaker unit, the mechanism is pressed bias toward a stop position via a handle (11) overcoming a return spring (13) named as a first spring, the first spring drives a supporting plate to an open position of a contact under the condition of trip; an electromagnetic iron (3) provided with an excitation coil (4) and a magnetic path, the magnetic path is provided with a moving armature, the armature and a trip rod (7) are in a matched operation; and a device used for pressing bias the armature to a first position after trip, the device comprises an arm (8a) supported by the supporting plate. The auxiliary trip device is characterized by comprising an extra spring (15) named as a third spring, the extra spring (15) is tensioned to a close position of the device by the arm (8a) of the supporting plate (8), after unlocking of the supporting plate, the spring (15) named as a third spring can apply force upon the arm of the supporting plate during release, so as to press bias a switch blade (6) to the second position close to a magnetic path (5).
Description
Technical field
The present invention relates to a kind of auxiliary tripping device be contained in modular insulation housing, this modular insulation housing can be connected on breaker unit, described trip gear comprises operating mechanism, this operating mechanism has link of threading off, this dropout link design becomes to act on the dropout pallet of breaker unit, described mechanism comprises the drive link be connected on handle, rotatable engagement is in housing and have the supporting bracket of the mechanical linkages that can disconnect with drive link, and by magnet control with the release lever causing mechanical linkages to disconnect, in case of a failure, mechanism is caused automatically to thread off, and have nothing to do with handle and the actuating of the dropout pallet of breaker unit that is associated, in dropout situation, described mechanism is overcome by handle and is called that the back-moving spring of the first spring is biased into loading position, described first spring is designed to the unlocked position driving supporting bracket to circuit breaker, electromagnet is provided with excitation coil and is provided with magnetic circuit, it has mobile armature, this mobile armature can occupy primary importance or the second place, in this primary importance, because the effect armature and magnetic circuit that are called the back-moving spring of the second spring are separated, in this second place, when there is coil stimulating, armature is pulled to magnetic circuit by electromagnetic attraction, described armature cooperates with above-mentioned release lever, and for armature being biased toward the device of the second place after dropout, these devices comprise the arm supported by supporting bracket.
Background technology
If the object of low pressure servicing unit is when power system voltage is too low compared with its rated value or when the voltage of its terminal cuts off due to urgent open circuit, circuit breaker is opened.Electromagnet is kept to power up.When voltage drops under predetermined threshold, electromagnet is de-energized and activates the release lever of the mechanism previously loaded by handle.Before magnet spool is powered up again, when auxiliary body threads off, electromagnet is by mechanical de-energisation.The air gap of magnetic circuit being reduced to zero restriction makes plug-in strip cling electric current needed for (stick), and limit temperature raises thus.
The de-energisation of electromagnet is normally performed by the main spring acted on by arm on plug-in strip, and arm is arranged on the supporting plate for this purpose, and this de-energisation consumes the part energy that mechanism provides, and performs opening of the breaker unit that is associated.The stroke of servicing unit/power drive characteristic be weakened again to close the latter because supporting bracket is pressed on plug-in strip with the mating of resistance (resistive) characteristic of circuit breaker, this plug-in strip is relative with the power that it opens spring.
Summary of the invention
The invention provides a kind of solution of this problem, and propose a kind of auxiliary tripping device of simple designs, it can make the slackening of stroke/force characteristic of mechanism be compensated, and does not damage the performance of servicing unit.
For this purpose, the object of this invention is to provide a kind of device of the above-mentioned type, the feature of this device is that it comprises the spring being called the 3rd spring, strained by the arm of supporting bracket at this spring of loading position of mechanism, be called the described spring of the 3rd spring when it discharges can on the arm of supporting bracket applying power, after the locking of supporting bracket has discharged, plug-in strip to be turned back to the said second position near magnetic circuit.
According to another feature, be called that the spring of the 3rd spring and the arm of supporting bracket are formed as and are arranged to when threading off beginning, the direction being applied to the starting force on the arm of supporting bracket makes the moment that is delivered on the arm of supporting bracket more weak, in the release along with spring, in the process of arm movement, the direction of the power of the spring on arm changes, make being called that the moment that the spring of the first spring is no longer enough to be delivered to when providing simulation power arm was exaggerated in the interstage simultaneously, and the moment being delivered to arm at the end of threading off is more weak, wherein, described simulation power is needed for the dropout pallet for unlocking circuit breaker and for reloading needed for magnetic circuit.
According to another feature, be called that the spring of the 3rd spring is torsionspring.
According to another feature, be called the end that the loading position that the spring of the 3rd spring is included in mechanism is pressed in the end on housing and is pressed on the arm of supporting bracket, two ends of spring are crushed on housing at the trip positions of mechanism, when occurring to thread off or when handle is placed on position of rest, caused the pressure point of the second end of spring by the motion of supporting bracket from the position be pressed in arm to the change of the position be pressed on housing.
According to another feature, described trip gear is low pressure trip device.
Accompanying drawing explanation
But other advantages of the present invention and feature become clearer understanding, in figure by from the detailed description only provided in order to object of illustrating with reference to the accompanying drawings:
Fig. 1 is the front view of the inside of the auxiliary tripping device illustrated according to particular implementation of the present invention, and described device is in closed and loading position, and described magnetic circuit is closed;
Fig. 2 is the plane graph seen from behind relative to figure above, and the mechanism of device and the magnetic circuit in same position are only shown;
Fig. 3 is the figure identical with Fig. 1 when threading off beginning, and magnetic circuit is in opening procedure;
Fig. 3 a is the partial view of Fig. 3, and the dropout of mechanism is shown;
Fig. 4 is the figure identical with Fig. 2 of the position at the device corresponding to Fig. 3;
Fig. 5 is figure identical with Fig. 1 after device is threaded off, and is the position of carrying out more forward at device compared with Fig. 3, and handle is still closed but mechanism is in the process of reset;
Fig. 6 is the figure identical with Fig. 2 of the position at the device corresponding to Fig. 5;
Fig. 7 is the position of rest place of device after the dropout figure identical with Fig. 1, and handle is opened;
Fig. 8 is in the position of the device corresponding to Fig. 7, the figure identical with Fig. 2;
Fig. 9 is the figure identical with Fig. 7, and supporting bracket is removed; And
Figure 10 is the perspective view of front view.
Embodiment
In the drawings, the auxiliary tripping device D according to particular implementation of the present invention can be seen, especially low pressure releasing device, it is contained in modular insulation housing 1, be designed to be connected on breaker unit (not shown), described trip gear mainly comprises operating mechanism 2 and electromagnet 3.This operating mechanism 2 has the dropout link being designed to act on the dropout pallet of the breaker unit be associated.This electromagnet 3 is equipped with excitation coil 4 and is equipped with magnetic circuit 5, there is mobile armature 6, this armature 6 can occupy primary importance or the second place, in primary importance, this armature and magnetic circuit are separated, and be the position that described armature is called as back-moving spring 12 bias voltage of the second spring, the described second place is near described magnetic circuit, when there is coil stimulating, the power that described armature overcomes described spring is pulled by electromagnetic attraction.
Electromagnet 3 comprises magnetic circuit in a known manner, and this magnetic circuit is formed by magnetic U-shaped part 5, and this magnetic U-shaped part is made up of ferromagnetic steel, and the mobile armature formed with pivotable plug-in strip 6 operates mutually synergistically, and this electromagnet 3 also comprises the coil 4 supported by insulation crust.
In known manner, operating mechanism 2 comprises release lever 7, and this release lever 7 is rotatably mounted on rotary support plate 8.This supporting bracket 8 also comprises and to cooperate with release lever 7 on the one hand and on the other hand and the deadlock lever 9 that cooperates mutually of the drive link 10 being connected to reseting handle 11.Bar 10 acts in supporting bracket 8 via deadlock lever 9, and this deadlock lever 9 is by release lever 7 locking.When occurring to thread off, the spring 13 that moment of torsion is called as the first spring is delivered to supporting bracket 8, and this first spring 13 is resetted by handle after each dropout.When locking between the supporting bracket 8 and bar 10 of mechanism is discharged by release lever 7, this spring 13 thus by when resetting at first store energy transferring to supporting bracket 8, this causes the pallet of breaker unit to be unlocked, and opens the contact of the breaker unit be associated thus.It is nonsynchronous with returning of supporting bracket 8 and bar 7 that handle 11, bar 10 and deadlock lever 9 turn back to open position.
According to the present invention, this supporting bracket 8 also comprises arm 8a, arm 8a is designed to cooperate with torsionspring 15, under the non-stress state of mechanism, described spring is through two relative end 15a, 15b compressed fit, and described two ends are respectively in two parts of device case, and after threading off in the motion by supporting bracket, end 15b is pressed on the arm 8a of supporting bracket 8, to apply enough power in supporting bracket 8, so that plug-in strip 6 is turned back to above-mentioned primary importance after dropout.
Fig. 1 and 2 illustrates trip gear in the standby state, and wherein, magnet spool 4 is powered, and mechanism 2 is loaded and breaker unit is in the close position.Plug-in strip 6 is permanently attracted to such position, and in this position, it is resisted against on magnetic U-shaped part 5, and the actuator lever 16 be associated with plug-in strip 6 does not act on release lever 7, this release lever 7 by mechanism 2 Active Locking at stress state.Under this position, the 15a of extra spring 15 in two branch 15a, 16b is pressed in on housing 1 all-in-one-piece pillar, and another 15b in its branch is pressed on the arm 8a of supporting bracket 8, this spring 15 is remained on loading position by the arm 8a of supporting bracket 8, and this is due to the effect in handle 11, the locking that release lever 7 performs between bar 10 and deadlock lever 9.Therefore this extra spring 15 is tightened to the loading position of main spring 13 by arm 8a.In this position, it is more weak that the direction being applied to the starting force F on the arm 8a of supporting bracket makes by extra spring 15 moment be delivered on arm, as by between distance d1/d2 compared with represented by small scale, this distance d1 and d2 be separate above-mentioned power direction D1, through supporting bracket jointed shaft X and be parallel to the direction D2 of above-mentioned line D1 and be parallel to aforementioned two lines and the distance of line D3 through the rotating shaft of spring 15.
In figure 3, there is voltage failure at the terminal place of coil 4 and caused magnetic circuit 5 to be opened, move plug-in strip 6 in the clockwise direction thus.In this motion process, the actuator lever 16 be associated with plug-in strip 6 is rotated in the same direction by driving, and is positioned at the end 16a actuation trip bar 7 on plug-in strip opposite side through it.The motion of the latter causes the unblock of deadlock lever 9, and as shown in Figure 3 a, this has and to make due to the effect of above-mentioned main spring 13 supporting bracket 8 and bar 7 start the result rotated.This motion causes unlocking and therefore causing the contact of the breaker unit be associated to be opened.The position of the device shown in Fig. 3, this position corresponds to thread off and starts, and is delivered to the moment of mechanism and identical in the position in previous figure, not change outside tripping characteristic by extra spring 15, as represented by distance d1, it is equal in figures 2 and 4.
In figs. 5 and 6, dropout process is in key point place, and main spring 13 has transmitted its most of energy, and arm 8a self and actuator lever 16 are interfered, and actuator lever 16 experiences the counterwork of spring 12.This moment, acting in supporting bracket 8 of additional springs 15 produces its maximum moment, this in figure 6 by power F direction D1, through supporting bracket rotating shaft X and be parallel to D1 direction D2 and through the axle of spring 15 direction D3 the d1 '/d2 ' of larger ratio represent.In this position, the extra moment counterbalance spring 12 that spring 15 transmits compresses the energy loss brought.
By this way, although spring 15 discharges very little in the process in the stage of dropout, be tending towards making it act in the most critical moment of dropout process at the ratio of its main shaft, length d1 '/d2 ' between its point of application in supporting bracket 8 and the rotating shaft of supporting bracket 8 maximum.
In figs. 5 and 6, handle 11 is still in the close position, and the latter is in the process turned back to corresponding to the position of open position together with bar 10, as shown in Fig. 7 to 8.
At the end of the rotating distance of supporting bracket 8, the moment that additional springs 15 is transmitted starts to reduce, until plug-in strip stroke end its reduce, coil 4 (if again having rated current to flow through it) can attract plug-in strip 6 with keeps magnetic circuit close position.
In Fig. 7 is to 10, this device is in an open position, and the contact of breaker unit is opened.In this position, additional springs 15 is in pre-stressed state, and two end 15a, 15b are pressed in two parts of housing respectively.Open in the process of motion in supporting bracket, in fact arm moves downward, and this causes the pressure point of the second end 15b of additional springs 15 to move to from the position that it is pressed in arm the position that it is pressed in (Fig. 9) on housing.
In this stage, the closed of contact of breaker is allowed to, and by actuation handle 11 to the opposite side shown in Fig. 7 to 10, the reset of main spring 13.When electromagnet no longer has enough electric currents again to keep magnetic circuit to close, the actuating force of the spring accumulated in reseting procedure will discharge again.
According to the present invention, therefore torsionspring applies moment on the arm of supporting bracket, as the supplying of main spring of mechanism supports plate.
The geometry of arm and the geometry of additional springs and the arrangement form of the two make the extra moment starting to be delivered on mechanism supports plate opening stroke more weak, not change and therefore do not disturb or reduce outside tripping characteristic, comparatively strong when the main spring motion confirmed is more weak, and at the end of more weak.
Therefore no longer enough provided when the simulation power needed for breaker unit that unlocks and the simulation power needed for reset magnetic circuit at the energy that main spring provides by the moment that torsionspring is delivered in supporting bracket simultaneously and become maximum.When the resistance of plug-in strip is maximum, energy supplement is maximum.
Power/the kinetic characteristic provided to circuit breaker by this mechanism changes thus hardly.
Achieved thus according to auxiliary tripping device of the present invention, the magnetic circuit of electromagnet can close by machinery again thus, and to limit the magnitude of current needed for plug-in strip magnetic bonding, power/kinetic characteristic that mechanism provides only changes very little.
Thus achieve the compensation of actuating force loss, and do not damage the ability of auxiliary body's coupling circuit breaker.The power of threading off needed for this mechanism is directly linked to the driving moment of main spring.
All common parts and other servicing units keep compatible.According to the characteristic of the servicing unit that will be engaged, just add or do not add additional springs.By pulling down this spring, identical mechanism can such as long-range trip unit.It should be noted that, although described execution mode relates to low pressure auxiliary tripping device, the present invention also can be applied to any auxiliary tripping device, wherein must turn back to its position at dropout back switch blade.
The present invention is in no way limited to described and illustrated execution mode naturally, and the latter only provides with object of illustrating.
On the contrary, the present invention extends to all technical equivalents and their combination that contain described device, as long as they realize according to marrow of the present invention.
Claims (5)
1. an auxiliary tripping device, it is contained in modular insulation housing, can be connected on breaker unit, and described trip gear comprises:
Operating mechanism, this operating mechanism has link of threading off, this dropout link design becomes to act on the dropout pallet of breaker unit, described mechanism comprises the drive link being connected to handle, rotatable engagement in the housing and have the supporting bracket of the mechanical linkages that can disconnect with drive link, and release lever, this release lever is by magnet control, with in the case of a fault, described mechanical linkages is caused to disconnect, mechanism is caused automatically to thread off, and it is independent mutually with the actuating of the dropout pallet of the breaker unit be associated with handle, described mechanism is overcome by handle and is called that the back-moving spring of the first spring is biased toward loading position, described first spring is designed to drive supporting bracket to arrive the unlocked position of breaker unit when threading off,
Electromagnet, this electromagnet is provided with excitation coil and has magnetic circuit, this magnetic circuit has mobile armature, and this armature can occupy any one in primary importance and the second place, in primary importance, owing to being called that this armature of effect of the back-moving spring of the second spring is separated with magnetic circuit, in the second place, when there is coil stimulating, armature is pulled to magnetic circuit by electromagnetic attraction, described armature cooperates with above-mentioned release lever
For armature being biased toward the device of the second place after dropout, these devices comprise the arm that described supporting bracket supports,
It is characterized in that, described trip gear comprises the spring (15) being called the 3rd spring, when mechanism is in loading position and breaker unit is in the close position, 3rd spring is by the arm of supporting bracket (8) (8a) tensioning, after the locking of supporting bracket has discharged, be called the 3rd spring described spring (15) can when it discharges on the arm of supporting bracket applying power, plug-in strip (6) to be biased toward the said second position near magnetic circuit (5).
2. auxiliary tripping device as claimed in claim 1, it is characterized in that, be called that the spring (15) of the 3rd spring and the arm (8a) of supporting bracket (8) are formed as and are arranged to when threading off beginning, the direction being applied to the starting force F on the arm (8a) of supporting bracket (8) is that the moment making to be delivered on the arm of supporting bracket is more weak, in the process that arm moves along with the release of spring (15), when being called that the spring of the first spring no longer enough provides the unblock of the dropout pallet of breaker unit and reloads the simulation power needed for magnetic circuit simultaneously, it is exaggerated in the interstage that the direction of the power of the spring on arm changes the moment making to be delivered on arm, and the moment be delivered on arm at the end of threading off is more weak.
3. auxiliary tripping device as claimed in claim 1, is characterized in that, be called that the spring (15) of the 3rd spring is torsionspring.
4. auxiliary tripping device as claimed in claim 3, it is characterized in that, be called that the spring (15) of the 3rd spring comprises the end (15a) be pressed on housing (1) and the end (8b) be pressed at the loading position of mechanism on the arm (8a) of supporting bracket (8), two end (15a of spring (15), 15b) be pressed on housing (1) at the trip positions of mechanism, the pressure point of second end (15b) of spring caused by the motion of supporting bracket when occurring to thread off or when handle is placed in position of rest from the position be pressed in arm (8a) to the change of the position be pressed on housing (1).
5. the auxiliary tripping device according to any one of the claims, is characterized in that, described trip gear is low pressure trip device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1002524A FR2961343B1 (en) | 2010-06-15 | 2010-06-15 | AUXILIARY RELEASE DEVICE FOR ASSOCIATED WITH A CIRCUIT BREAKER. |
| FR10/02524 | 2010-06-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102290295A CN102290295A (en) | 2011-12-21 |
| CN102290295B true CN102290295B (en) | 2015-03-25 |
Family
ID=43466757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110159229.6A Active CN102290295B (en) | 2010-06-15 | 2011-06-14 | Auxiliary trip device designed to be associated with circuit breaker unit |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2398034B1 (en) |
| CN (1) | CN102290295B (en) |
| ES (1) | ES2409304T3 (en) |
| FR (1) | FR2961343B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110299271A (en) * | 2019-07-05 | 2019-10-01 | 苏州未来电器股份有限公司 | A kind of bistable electro magnetic mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4625190A (en) * | 1985-03-04 | 1986-11-25 | Westinghouse Electric Corp. | Remotely controlled solenoid operated circuit breaker |
| CN86107136A (en) * | 1985-10-31 | 1987-04-29 | 默林·格伦 | A kind of operating mechanism of low-voltage power circuit breaker |
| CN1051268A (en) * | 1989-10-05 | 1991-05-08 | 西屋电气公司 | Circuit breaker with adjustable low magnetic trip |
| EP0813219A1 (en) * | 1996-06-10 | 1997-12-17 | Siemens Aktiengesellschaft | Undervoltage release device |
| CN1238546A (en) * | 1998-06-04 | 1999-12-15 | 施耐德电器工业公司 | Electrical breaking device comprising differential trip device and circuit breaker comprising such device |
| CN101461021A (en) * | 2006-06-12 | 2009-06-17 | 埃伦贝格尔及珀恩斯根有限公司 | Protection switch |
-
2010
- 2010-06-15 FR FR1002524A patent/FR2961343B1/en not_active Expired - Fee Related
-
2011
- 2011-03-15 ES ES11354005T patent/ES2409304T3/en active Active
- 2011-03-15 EP EP20110354005 patent/EP2398034B1/en active Active
- 2011-06-14 CN CN201110159229.6A patent/CN102290295B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4625190A (en) * | 1985-03-04 | 1986-11-25 | Westinghouse Electric Corp. | Remotely controlled solenoid operated circuit breaker |
| CN86107136A (en) * | 1985-10-31 | 1987-04-29 | 默林·格伦 | A kind of operating mechanism of low-voltage power circuit breaker |
| CN1051268A (en) * | 1989-10-05 | 1991-05-08 | 西屋电气公司 | Circuit breaker with adjustable low magnetic trip |
| EP0813219A1 (en) * | 1996-06-10 | 1997-12-17 | Siemens Aktiengesellschaft | Undervoltage release device |
| CN1238546A (en) * | 1998-06-04 | 1999-12-15 | 施耐德电器工业公司 | Electrical breaking device comprising differential trip device and circuit breaker comprising such device |
| CN101461021A (en) * | 2006-06-12 | 2009-06-17 | 埃伦贝格尔及珀恩斯根有限公司 | Protection switch |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2961343B1 (en) | 2012-06-08 |
| FR2961343A1 (en) | 2011-12-16 |
| CN102290295A (en) | 2011-12-21 |
| EP2398034B1 (en) | 2013-05-08 |
| EP2398034A1 (en) | 2011-12-21 |
| ES2409304T3 (en) | 2013-06-26 |
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