CN101067987B - Permanent magnetic operating mechanism of AC contactor and vacuum circuit breaker - Google Patents
Permanent magnetic operating mechanism of AC contactor and vacuum circuit breaker Download PDFInfo
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- CN101067987B CN101067987B CN2007100116686A CN200710011668A CN101067987B CN 101067987 B CN101067987 B CN 101067987B CN 2007100116686 A CN2007100116686 A CN 2007100116686A CN 200710011668 A CN200710011668 A CN 200710011668A CN 101067987 B CN101067987 B CN 101067987B
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Abstract
This invention discloses a permanent-magnetic operation unit of an AC contactor and a vacuum breaker composed of a shell, a motion contact, a static contact, a permanent magnetic bracket, a pull rod, a permanent magnet and an electromagnet, in which, the poles of the magnet generates different magnetic forces by controlling supplies and the magnet or the bracket drives the motion contact to move utilizing the theory of like electric charges repelling each other and unlike electric charges attracting each other so as to switch on or cut off the main supply circuit, in which, the main supply circuit is turned on or off at the instant for adjusting positions of poles of the magnet and electromagnet with little cost, after the control supply is switched off, the convex part of the magnet or the electromagnet bracket is blocked in the concave of the electromagnet, which can't move any more.
Description
Technical field
The present invention relates to A.C. contactor and vacuum circuit-breaker, especially relate to the operating mechanism of a kind of A.C. contactor and vacuum circuit-breaker.
Background technology
At present: widely used A.C. contactor generally adopts the electromagnetic type operating mechanism, is mainly used in to exchange 50HZ, voltage 660V, in electric current 630A and the following distribution line, connects at a distance and cut-offs circuit, also is applicable to the three-phase alternating-current motor of frequent starting.The sucking coil of A.C. contactor electromagnetic type operating mechanism must be switched on, the reliably adhesive of moving contact and fixed contact, after this, sucking coil must be switched on all the time, to guarantee that electromagnetic force does not disappear, make moving contact and fixed contact remain attracting state, in long-term the use, expose some problems, as: coil easily burns, and not timing of adhesive noise unshakable in one's determination is big, and when work must consumed power, energising all the time wastes energy.
The general vacuum circuit-breaker of Shi Yonging, be divided into spring energy-storage operating mechanism and electromagnetic operating mechanism, vacuum circuit-breaker is mainly used in electric power system, industry and the civil buildings 6～10kV distribution, particularly on the power distribution equipment of 6～10kV electric pressure, is widely used.
Show according to the power supply department statistics, the unreliability of the spring energy-storage operating mechanism of vacuum circuit-breaker, about more than 70～90%.Reason is that the mechanical breakdown of spring energy-storage operating mechanism causes, and in view of this spring energy-storage operating mechanism is very unreliable.
The electromagnetic operating mechanism of vacuum circuit-breaker, sucking coil must be switched on during work, the reliably adhesive of moving contact and fixed contact, after this, sucking coil must be switched on all the time, to guarantee that electromagnetic force does not disappear, makes moving contact and fixed contact remain attracting state, and when work must consumed power, energising all the time wastes energy.
Summary of the invention
The present invention to solve technical problem to provide a kind of be energy savings, can switch on and off the permanent-magnet manipulating mechanism of main power circuit again reliably, can replace the electromagnetic operating mechanism that traditional electromagnetic operating mechanism of A.C. contactor and vacuum circuit-breaker generally use, spring operating mechanism.
For solving the problems of the technologies described above, the basic design of technical scheme that the present invention adopts is as required by the control power supply, to make the magnetic pole of electromagnet produce different magnetic force, the position of adjusting permanent magnet poles and electromagnet pole.The magnetic pole of permanent magnet or permanent magnet poles and corresponding permanent magnet carriage with respect to the same magnetic pole of electromagnet, have horizontal in-migration, level to remove two kinds of operating states during work.Regulate the moment of permanent magnet poles and electromagnet pole position, consume electric energy seldom, utilize the principle that the same sex is repelled each other, there is a natural attraction between the sexes between permanent magnet poles and the electromagnet pole, permanent magnet or permanent magnet carriage are moved, the drive moving contact moves, make the closed or disconnection of moving contact and fixed contact, reach the purpose that connects or disconnects main power circuit.After the control power supply disconnects, though electromagnet has not had electromagnetic force, permanent magnet still can hold the iron core of electromagnet in theory, but when the permanent-magnet manipulating mechanism adhesive, the spring force of contact is big (about 2000-6000 newton) very, need very big permanent magnet (uneconomical) just can hold electromagnet (during power failure), both can not be moved in level (elastic force) direction again.When the protruding place of permanent magnet or the protruding place of permanent magnet carriage, relative with the recess of electromagnet pole, when protruding place is stuck in recess, just can hold electromagnet (during power failure) with very little permanent magnet, protruding place is stuck in recess, and both can not be moved in level (elastic force) direction again.Consumed power still can not keep main power circuit to disconnect or attracting state reliably, reach to connect or disconnect main power circuit reliably, and the purpose of energy savings.Obtained beyond thought technique effect.Solve people and thirsted for solving always, but failed the technical barrier of the energy savings of succeeing all the time.
The protruding place of permanent magnet or the protruding place of permanent magnet carriage, relative with the recess of electromagnet pole, protruding place is stuck in this technical characterictic of recess, and is non-apparent, has outstanding substantive distinguishing features and obvious improvement.Obtained the technique effect of beyond thought saving material (permanent magnet " neodymium iron boron " is very expensive).
Description of drawings
The present invention is done the explanation of further detail below in conjunction with the drawings and specific embodiments
Fig. 1: be E shape electromagnet, permanent magnet N pole is last, and the master of off-state looks schematic diagram.
Fig. 2: be E shape electromagnet, permanent magnet N pole is last, and the master of attracting state looks schematic diagram.
Fig. 3: be E shape electromagnet, last, the master of off-state looks schematic diagram to permanent magnet for the carriage N utmost point.
Fig. 4: be E shape electromagnet, last, the master of attracting state looks schematic diagram to permanent magnet for the carriage N utmost point.
Fig. 5: be left and right sides C shape electromagnet, the permanent magnet paperback, the N utmost point is on a left side, and schematic diagram is looked on an off-state left side.
Fig. 6: be left and right sides C shape electromagnet, the permanent magnet paperback, the N utmost point is on a left side, and schematic diagram is looked on an attracting state left side.
Fig. 7: be left and right sides C shape electromagnet, permanent magnet is for the carriage paperback, and the N utmost point is looked schematic diagram on the left side of left off-state.
Fig. 8: be left and right sides C shape electromagnet, permanent magnet is for the carriage paperback, and the N utmost point is looked schematic diagram on the left side of left attracting state.
Fig. 9: be left and right sides C shape electromagnet, permanent magnet paperback, the schematic top plan view of attracting state.
Figure 10: be left and right sides C shape electromagnet, permanent magnet is for the carriage paperback, the schematic top plan view of attracting state.
Figure 11: be C shape electromagnet, permanent magnet N pole is to dress, and the master of off-state looks schematic diagram.
Figure 12: be C shape electromagnet, permanent magnet N pole is to dress, and the master of attracting state looks schematic diagram.
Figure 13: be C shape electromagnet, extremely to dress, the master of off-state looks schematic diagram to permanent magnet for carriage N.
Figure 14: be C shape electromagnet, extremely to dress, the master of attracting state looks schematic diagram to permanent magnet for carriage N.
Among the figure, shell 1, moving contact 2, fixed contact 3, permanent magnet carriage 4, pull bar 5, permanent magnet 6, E type electromagnet 7, the last magnetic pole 8 of E type electromagnet 7, the middle magnetic pole 9 of E type electromagnet 7, the lower magnetic pole 10 of E type electromagnet 7, left side electromagnet 11, the last magnetic pole 12 of left side electromagnet 11, the lower magnetic pole 13 of left side electromagnet 11, right electromagnet 14, the last magnetic pole 15 of right electromagnet 14, the lower magnetic pole 16 of right electromagnet 14, C type electromagnet 17, the last magnetic pole 18 of C type electromagnet 17, the lower magnet 19 of C type electromagnet 17, electromagnet recess 20, the protruding place 21 of permanent magnet 6 magnetic poles, the perhaps protruding place 21 of permanent magnet carriage 4.Pull bar 5 one ends and moving contact 2 connect, and pull bar 5 other ends and permanent magnet 6 connect, and perhaps pull bar 5 other ends and permanent magnet carriage 4 connect.
Embodiment
Among Fig. 1, Fig. 2, Fig. 3, Fig. 4, electromagnet is made up of last magnetic pole 8, middle magnetic pole 9, the lower magnetic pole 10 of E type electromagnet 7.The last magnetic pole 8 of E type electromagnet 7, middle magnetic pole 9, lower magnetic pole 10 respectively have recess 20, relative with the protruding place 21 of permanent magnet 6 magnetic poles, perhaps relative with the protruding place 21 of permanent magnet 6 magnetic poles and corresponding permanent magnet carriage 4, protruding place 21 is stuck in recess 20. permanent magnet carriages 4 one or several protruding places 21, and permanent magnet 6 has one or several protruding places 21.
When Fig. 1, the last magnetic pole 8 of magnetic pole of permanent magnet 6 (N or S) and electromagnet 7 is relative, the middle magnetic pole 9 of another magnetic pole of permanent magnet 6 (S or N) and electromagnet 7 is relative, permanent magnet 6 drives pull bar 5 and moving contact 2, contactor moving contact 2 and fixed contact 3 are left, and main power circuit is in off-state.Consumed power not, main power circuit still keeps off-state.
Under the effect of external control power supply, the lower magnetic pole 10 that the middle magnetic pole 9 that makes the last magnetic pole 8 of electromagnet 7 be the N utmost point, electromagnet 7 is the S utmost point, electromagnet 7 is the N utmost point; The magnetic pole of permanent magnet 6 (when being the N utmost point) is repelled by the last magnetic pole 8 of electromagnet 7, is attracted by the middle magnetic pole 9 of electromagnet 7; Another magnetic pole of permanent magnet 6 (when being the S utmost point) is repelled by the middle magnetic pole 9 of electromagnet 7, is attracted by the lower magnetic pole 10 of electromagnet 7; Permanent magnet 6 moves to lower magnetic pole 10 directions of electromagnet 7, drives pull bar 5 and moving contact 2 and moves, and makes contactor moving contact 2 and fixed contact 3 adhesives, and main power circuit is in on-state.After the control power supply disconnects, consumed power not, main power circuit still keeps on-state.
When Fig. 2, the middle magnetic pole 9 of magnetic pole of permanent magnet 6 (N or S) and electromagnet 7 is relative, and the lower magnetic pole 10 of another magnetic pole of permanent magnet (6) (S or N) and electromagnet 7 is relative, and permanent magnet 6 drives pull bar 5 and moving contact 2.Make contactor moving contact 2 and fixed contact 3 adhesives, main power circuit is in on-state.Consumed power not, main power circuit still keeps on-state.
Under the effect of external control power supply, the lower magnetic pole 10 that the middle magnetic pole 9 that makes the last magnetic pole 8 of electromagnet electromagnet 7 be the S utmost point, electromagnet 7 is the N utmost point, electromagnet 7 is the S utmost point; The magnetic pole of permanent magnet 6 (when being the N utmost point) is attracted by the last magnetic pole 8 of electromagnet 7, is repelled by the middle magnetic pole 9 of electromagnet 7; Another magnetic pole of permanent magnet 6 (when being the S utmost point) is attracted by the middle magnetic pole 9 of electromagnet 7, is repelled by the lower magnetic pole 10 of electromagnet 7; Permanent magnet 6 moves to last magnetic pole 8 directions of electromagnet 7, and permanent magnet 6 drives pull bar 5 and moving contact 2 moves.Contactor moving contact 2 and fixed contact 3 are left, and main power circuit is in off-state.After the control power supply disconnects, consumed power not, main power circuit still keeps off-state.
Fig. 3, Fig. 4 principle are the same with Fig. 1, Fig. 2, have just increased permanent magnet carriage 4.
Among Fig. 5, Fig. 6, Fig. 7, Fig. 8, electromagnet is by the last magnetic pole 12 of C type left side electromagnet 11, the last magnetic pole 15 of the right electromagnet 14 of the lower magnetic pole 13 of left electromagnet 11 and C type, lower magnetic pole 16 compositions of C type right side electromagnet 14.The last magnetic pole 12 of C type left side electromagnet 11, the last magnetic pole 15 of the right electromagnet 14 of lower magnetic pole 13 and C type, lower magnetic pole 16 respectively has recess 20, and is relative with the protruding place 21 of permanent magnet 6 magnetic poles, perhaps relative with the protruding place of permanent magnet 6 magnetic poles and corresponding permanent magnet carriage 4 21, protruding place 21 is stuck in recess 20.Permanent magnet carriage 4 has one or several protruding places 21, and permanent magnet 6 has one or several protruding places 21.
When Fig. 5, the magnetic pole of permanent magnet 6 (N or S) is relative with the last magnetic pole 12 of C type left side electromagnet 11, and another magnetic pole of permanent magnet 6 (S and N) is relative with the last magnetic pole 15 of the right electromagnet 14 of C type.Permanent magnet 6 drives pull bar 5 and moving contact 2, and contactor moving contact 2 and fixed contact 3 are left, and main power circuit is in off-state.Consumed power not, main power circuit still keeps off-state.
Under the effect of external control power supply, make the last magnetic pole 12 of C type left side electromagnet 11 be the N utmost point, the N utmost point that repels permanent magnet 6, the lower magnetic pole 13 of C type left side electromagnet 11 is the S utmost point, attract the magnetic (when being the N utmost point) of permanent magnet 6, the last magnetic pole 15 of the right electromagnet 14 of C type is the S utmost point simultaneously, repels the S utmost point of permanent magnet 6, the lower magnetic pole 16 of the right electromagnet 14 of C type is the N utmost point, attracts another magnetic pole (when being the S utmost point) of permanent magnet 6.Permanent magnet 6 moves down, and permanent magnet 6 drives pull bar 5 and moving contact 2 moves, and makes contactor moving contact 2 and fixed contact 3 adhesives, and main power circuit is in on-state.After the control power supply disconnects, consumed power not, main power circuit still keeps on-state.
When Fig. 6, the magnetic pole of permanent magnet 6 (N or S) is relative with the lower magnetic pole 13 of C type left side electromagnet 11, and permanent magnet 6 another magnetic poles (S or N) are relative with the lower magnetic pole 16 of the right electromagnet 14 of C type.Permanent magnet 6 drives pull bar 5 and moving contact 2, makes contactor moving contact 2 and fixed contact 3 adhesives, and main power circuit is in on-state.Consumed power not, main power circuit still keeps on-state.
Under the effect of external control power supply, make the last magnetic pole 12 of C type left side electromagnet 11 be the S utmost point, attract the N utmost point of permanent magnet 6; The lower magnetic pole 13 of C type left side electromagnet 11 is the N utmost point, the magnetic (when being the N utmost point) that repels permanent magnet 6, the lower magnetic pole 15 of C type left side electromagnet 14 is the N utmost point simultaneously, attracts another magnetic pole (when being the S utmost point) of permanent magnet 6, the lower magnetic pole 16 of the right electromagnet 14 of C type is the S utmost point, repels the S utmost point of permanent magnet 6; Permanent magnet 6 moves up, and permanent magnet 6 drives pull bar 5 and moving contact 2 moves, and contactor moving contact 2 and fixed contact 3 are left, and main power circuit is in off-state.After the control power supply disconnects, consumed power not, main power circuit still keeps off-state.
Fig. 7, Fig. 8 principle are the same with Fig. 5, Fig. 6, have just increased permanent magnet carriage 4.
Fig. 9 is the schematic top plan view of Fig. 5, Fig. 6.
Figure 10 is the schematic top plan view of Fig. 7, Fig. 8.
Among Figure 11, Figure 12, Figure 13, Figure 14, electromagnet is by the last magnetic pole 18 of C type electromagnet 17, and the lower magnetic pole 19 of C type electromagnet 17 is formed.The last magnetic pole 18 of C type electromagnet 17, lower electromagnet 19 respectively has recess 20, and is relative with the protruding place 21 of permanent magnet 6 magnetic poles, and perhaps relative with the protruding place of permanent magnet 6 magnetic poles and corresponding permanent magnet carriage 4 21, protruding place 21 is stuck in recess 20.Permanent magnet carriage 4 has one or several protruding places 21, and permanent magnet 6 has one or several protruding places 21.
When Figure 11, the last magnetic pole 18 of magnetic pole of permanent magnet 6 (N or S) and electromagnet 17 is relative, and permanent magnet 6 drives pull bar 5 and moving contact 2, and contactor moving contact 2 and fixed contact 3 are left, and main power circuit is in off-state.Consumed power not, main power circuit still keeps off-state.
Under the effect of external control power supply, the lower magnetic pole 19 that makes the last magnetic pole 18 of C type electromagnet 17 be the N utmost point, C type electromagnet 17 is the S utmost point; During the magnetic pole of permanent magnet 6 (being the N utmost point), repelled, attracted by the lower magnetic pole 19 of C type electromagnet 17 by magnetic pole on the C type electromagnet 17 18; Permanent magnet 6 moves to lower magnetic pole 19 directions of C type electromagnet 17, drives pull bar 5 and moving contact 2 and moves, and makes contactor moving contact 2 and fixed contact 3 adhesives, and main power circuit is in on-state.After the control power supply disconnects, consumed power not, main power circuit still keeps on-state.
When Figure 12, the magnetic pole of permanent magnet 6 (N or S) is relative with the lower magnetic pole 19 of C type electromagnet 17, and permanent magnet 6 drives pull bar 5 and moving contact 2, makes contactor moving contact 2 and fixed contact 3 adhesives, and main power circuit is in on-state.Consumed power not, main power circuit still keeps on-state.
Under the effect of external control power supply, the last magnetic pole 18 that makes the lower magnetic pole 19 of C type electromagnet 17 be the N utmost point, C type electromagnet 17 is the S utmost point; The magnetic pole of permanent magnet 6 (when being the N utmost point) is attracted by the last magnetic pole 18 of C type electromagnet 17, is repelled by the lower magnetic pole 19 of C type electromagnet 17; Permanent magnet 6 moves to last magnetic pole 18 directions of C type electromagnet 17, drives pull bar 5 and moving contact 2 and moves, and makes contactor moving contact 2 and fixed contact 3 adhesives, and main circuit is in on-state.After the control power supply disconnects, consumed power not, main circuit still keeps on-state.
Figure 13, Figure 14 principle are the same with Figure 11, Figure 12, have just increased permanent magnet carriage 4.
Through on probation, moment consumes electric energy seldom, just can by the control power supply, make electromagnet 7,11 as required, and 14,17 magnetic pole produces different magnetic force, regulates the position of permanent magnet 6 and electromagnet 7,11,14,17 magnetic poles.After the control power supply disconnects, permanent magnet 6 still holds electromagnet 7,11,14,17 iron core, the protruding place 21 and the electromagnet 7 of the protruding place 21 of permanent magnet 6 magnetic poles or permanent magnet 6 magnetic poles and corresponding permanent magnet carriage 4,11, the recess 20 of 14,17 magnetic poles is relative, and protruding place 21 is stuck in recess 20, permanent magnet 6 or permanent magnet 6 magnetic poles and corresponding permanent magnet carriage 6 can not be moved again, make movable contact shop 2 and fixed contact 3 closed or disconnections, consumed power still can not keep main power circuit to disconnect or attracting state reliably, reach and connect or disconnect main power circuit reliably, and the purpose of energy savings.Can economize on electricity 99,5% through thick pacing calculation, obtain beyond thought technique effect.Solve people and thirsted for solving always, but failed the technical barrier of the energy savings of succeeing all the time.
Claims (7)
1. A.C. contactor and Permanent magnet actuators for vacuum circuit breakers, form by shell (1), moving contact (2), fixed contact (3), pull bar (5), permanent magnet (6), electromagnet (7), it is characterized in that: utilize the principle that the same sex is repelled each other, there is a natural attraction between the sexes between permanent magnet (6) magnetic pole and electromagnet (7) magnetic pole, permanent magnet (6) or permanent magnet carriage (4) are moved, the drive moving contact moves, make the closed or disconnection of moving contact and fixed contact, reach the purpose that connects or disconnects main power source; The permanent magnet carriage (4) of the magnetic pole of permanent magnet during work (6) or permanent magnet (6) magnetic pole and correspondence is the same magnetic pole of electromagnet (7,11,14,17) relatively, there are horizontal in-migration, level to remove two kinds of operating states, the protruding place (21) of permanent magnet (6) or the protruding place (21) of permanent magnet carriage (4), recess (20) with respect to electromagnet (7,11,14,17) magnetic pole, when moving in the horizontal direction recess, recess (20) blocks protruding place (21).
2. permanent-magnet manipulating mechanism according to claim 1 is characterized in that: the protruding place (21) of permanent magnet during work (6) magnetic pole is relative with the recess (20) of the last magnetic pole (8) of E type electromagnet (7); The protruding place (21) of another magnetic pole of permanent magnet (6) is relative with the recess (20) of the middle magnetic pole (9) of E type electromagnet (7); The protruding place (21) of permanent magnet when perhaps working (6) magnetic pole is relative with the recess (20) of the middle magnetic pole (9) of E type electromagnet (7); The protruding place (21) of another magnetic pole of permanent magnet (6) is relative with the recess (20) of the lower magnetic pole (10) of E type electromagnet (7).
3. permanent-magnet manipulating mechanism according to claim 1 is characterized in that: the recess (20) of the protruding place (21) of the permanent magnet carriage (4) of (6) magnetic pole of permanent magnet during work and correspondence and the last magnetic pole (8) of E type electromagnet (7) is relative; The recess (20) of the protruding place (21) of the permanent magnet carriage (4) of another magnetic pole of permanent magnet (6) and correspondence and the middle magnetic pole (9) of E type electromagnet (7) is relative; The recess (20) of the protruding place (21) of the permanent magnet carriage (4) of (6) magnetic pole of permanent magnet when perhaps working and correspondence and the middle magnetic pole (9) of E type electromagnet (7) is relative; The recess (20) of the protruding place (21) of the permanent magnet carriage (4) of another magnetic pole of permanent magnet (6) and correspondence and the lower magnetic pole (10) of E type electromagnet (7) is relative.
4. permanent-magnet manipulating mechanism according to claim 1 is characterized in that: permanent magnet during work (6) magnetic pole (21) is relative with the recess (20) of the last magnetic pole (12) of C type left side electromagnet (11); The protruding place (21) of another magnetic pole of permanent magnet (6) is relative with the recess (20) of the last magnetic pole (15) of the right electromagnet of C type (14); Permanent magnet when perhaps working (6) magnetic pole (21) is relative with the recess (20) of the lower magnetic pole (13) of C type left side electromagnet (11); The protruding place (21) of another magnetic pole of permanent magnet (6) is relative with the recess (20) of the lower magnetic pole (16) of the right electromagnet of C type (14).
5. permanent-magnet manipulating mechanism according to claim 1 is characterized in that: the protruding place (21) of the permanent magnet carriage (4) of (6) magnetic pole of permanent magnet during work and correspondence is relative with the recess (20) of the last magnetic pole (12) of C type left side electromagnet (11); The protruding place (21) of the permanent magnet carriage (4) of another magnetic pole of permanent magnet (6) and correspondence is relative with the recess (20) of the last magnetic pole (15) of the right electromagnet of C type (14); The protruding place (21) of the permanent magnet carriage (4) of (6) magnetic pole of permanent magnet when perhaps working and correspondence is relative with the recess (20) of the lower magnetic pole (13) of C type left side electromagnet (11); The protruding place (21) of the permanent magnet carriage (4) of another magnetic pole of permanent magnet (6) and correspondence is relative with the recess (20) of the lower magnetic pole (16) of the right electromagnet of C type (14).
7. permanent-magnet manipulating mechanism according to claim 1 is characterized in that: last magnetic pole (18) recess (20) of permanent magnet during work (6) magnetic pole (21) and C type electromagnet (17) is relative; Lower magnetic pole (19) recess (20) of protruding place of permanent magnet when perhaps working (6) magnetic pole (21) and C type electromagnet (17) is relative.
8. permanent-magnet manipulating mechanism according to claim 1 is characterized in that: the protruding place (21) of the permanent magnet carriage (4) of (6) magnetic pole of permanent magnet during work and correspondence is relative with last magnetic pole (18) recess (20) of C type electromagnet (17); The protruding place (21) of the permanent magnet carriage (4) of (6) magnetic pole of permanent magnet when perhaps working and correspondence is relative with lower magnetic pole (19) recess (20) of C type electromagnet (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100116686A CN101067987B (en) | 2007-06-12 | 2007-06-12 | Permanent magnetic operating mechanism of AC contactor and vacuum circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100116686A CN101067987B (en) | 2007-06-12 | 2007-06-12 | Permanent magnetic operating mechanism of AC contactor and vacuum circuit breaker |
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| CN101067987A CN101067987A (en) | 2007-11-07 |
| CN101067987B true CN101067987B (en) | 2010-09-29 |
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| CN2007100116686A Expired - Fee Related CN101067987B (en) | 2007-06-12 | 2007-06-12 | Permanent magnetic operating mechanism of AC contactor and vacuum circuit breaker |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543561B (en) * | 2012-01-04 | 2015-01-07 | 苏州朗格电气有限公司 | Closing holding device for vacuum circuit breaker |
| US10032588B2 (en) * | 2013-09-24 | 2018-07-24 | Ford Global Technologies, Llc | Integrated high voltage contactor and service disconnect |
| CN104525576B (en) * | 2014-12-12 | 2017-09-22 | 西南铝业（集团）有限责任公司 | A kind of roller-way control system |
| CN107591258A (en) * | 2017-10-25 | 2018-01-16 | 邓长春 | Electromagnetic switch and its application method |
| CN112950831B (en) * | 2021-02-02 | 2023-05-05 | 招商积余数字科技(深圳)有限公司 | Security protection is with light current entrance guard's device based on thing networking |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2726099Y (en) * | 2004-06-12 | 2005-09-14 | 吉林永大集团有限公司 | Permanent magnetic mechanism for low-voltage contactor |
| CN2736901Y (en) * | 2004-09-06 | 2005-10-26 | 天水长城开关厂 | Novel permanent-magnetic operating mechanism for switch gear |
| CN1971799A (en) * | 2006-12-05 | 2007-05-30 | 上海电器科学研究所（集团）有限公司 | Release electromagnet device |
-
2007
- 2007-06-12 CN CN2007100116686A patent/CN101067987B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2726099Y (en) * | 2004-06-12 | 2005-09-14 | 吉林永大集团有限公司 | Permanent magnetic mechanism for low-voltage contactor |
| CN2736901Y (en) * | 2004-09-06 | 2005-10-26 | 天水长城开关厂 | Novel permanent-magnetic operating mechanism for switch gear |
| CN1971799A (en) * | 2006-12-05 | 2007-05-30 | 上海电器科学研究所（集团）有限公司 | Release electromagnet device |
Non-Patent Citations (1)
| Title |
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| JP特开2005-079012A 2005.03.24 |
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