CN204651254U - A kind of overload protection energy saving ac contactor - Google Patents
A kind of overload protection energy saving ac contactor Download PDFInfo
- Publication number
- CN204651254U CN204651254U CN201520326236.4U CN201520326236U CN204651254U CN 204651254 U CN204651254 U CN 204651254U CN 201520326236 U CN201520326236 U CN 201520326236U CN 204651254 U CN204651254 U CN 204651254U
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- Prior art keywords
- contactor
- overload
- iron core
- protection module
- dynamic iron
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Abstract
The utility model discloses a kind of overload protection energy saving ac contactor; comprise shell, main contactor, only lock device, overload current protection module and binding post; only lock device is arranged on the right side of main contactor; main contactor comprises contact, secondary contact, dynamic iron core, starting switch, main coil and dynamic iron core link; only lock device comprises only iron block, armature, shutdown switch and only locking wire circle, and overload current protection module comprises rectification circuit, switching circuit, circuits for triggering and executive circuit.The utility model structure is simple; during line work; can not power to A.C. contactor main coil completely; eliminate the power supply that A.C. contactor main coil keeps magnetic; the power saving of maintenance work state can reach 90%; and the overload current protection module in the utility model can not affect major parameter and technical performance index that A.C. contactor itself possesses, does not separately take up room, easy-to-connect, cost are lower, overload current protection act is reliable and stable.
Description
Technical field
The utility model relates to a kind of contactor, specifically a kind of overload protection energy saving ac contactor.
Background technology
At present, people use A.C. contactor be all electric pass formula namely to the electromagnet coil power in A.C. contactor, rear generation magnetic, form attraction, drive contacting circuit, load just can work, this way has individual shortcoming, namely allow A.C. contactor produce attraction will be energized, allow it keep attraction must continue energising, load operation how long, and how long the solenoid inside A.C. contactor will be energized, maintain the normal ON of A.C. contactor electrical contact with the electromagnetic force of solenoid, waste the energy.
In addition; the A.C. contactor of current use only has simple load current on-off function; and do not possess overload current major loop by time instantaneous automatic dropout separating brake protection function; once when there is overload current by A.C. contactor major loop in work runs; between the moving contact of "on" position contacts with fixed contact, in moment, temperature raises fast; very easily cause and burn contact, damage A.C. contactor or occur open-phase running status; cause electric equipment products such as damaging motor, directly affect Business Economic Benefit.The solution of usual employing is that the circuit breaker connecting ad eundem or large one-level current class carries out overload protection, and the response time of overload protection is within 0.4s.One is also had to be adopt thermal overload relay to carry out overload protection; the response time of this mode overload protection is relatively long, is generally 2-10s, and the existence of these solutions takes up room large; the shortcomings such as wiring is inconvenient, and cost higher and response time is fast not.
Utility model content
The purpose of this utility model is the overload protection energy saving ac contactor providing a kind of structure simple, reliable and stable, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of overload protection energy saving ac contactor, comprise shell, main contactor, only lock device, overload current protection module and binding post, described only lock device is arranged on the right side of main contactor, described main contactor comprises contact, secondary contact, dynamic iron core, starting switch, main coil and dynamic iron core link, described dynamic iron core link is arranged on the upper end of dynamic iron core, the right side of dynamic iron core link is provided with only lockhole, described secondary contact is arranged on the upper end of dynamic iron core link, described contact is arranged on the upper end of secondary contact, contact is all connected the input of overload current protection module with secondary contact one end, the contact other end is all connected the output of overload protection overcurrent protection module with the secondary contact other end, described main coil is arranged on the lower end of dynamic iron core, described only lock device comprises only iron block, armature, shutdown switch and only locking wire circle, described only iron block is arranged in the only lockhole of dynamic iron core link, described armature is arranged on the right side of only iron block and is connected with only iron block, described only locking wire circle is arranged on only between iron block and armature, described only locking wire circle is connected with main coil, current sensor is installed with on the right side of binding post, current sensor is electrically connected with the input of overload current protection module respectively, the other end of described main coil connects the input on overload current protection module by starting switch, overload current protection module output also connecting coil binding post, described only locking wire circle other end connecting coil binding post.
As further program of the utility model: described binding post is arranged on the left end of shell.
As further program of the utility model: described current sensor has three.
As the utility model further scheme: described overload current protection module comprises rectification circuit, switching circuit, circuits for triggering and executive circuit; current sensor is connected executive circuit by rectification circuit, switching circuit with circuits for triggering successively, and the output of executive circuit is serially connected between main coil and winding wiring terminal.
Compared with prior art, the beneficial effects of the utility model are:
The utility model structure is simple; during line work; can not power to A.C. contactor main coil completely; eliminate the power supply that A.C. contactor main coil keeps magnetic; the power saving of maintenance work state can reach 90%; and the overload current protection module in the utility model can not affect major parameter and technical performance index that A.C. contactor itself possesses, does not separately take up room, easy-to-connect, cost are lower, overload current protection act is reliable and stable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is circuit block diagram of the present utility model.
In figure: 1-shell; 2-main contactor; 3-only locks device; 4-overload current protection module; 5-contact; 6-secondary contact; 7-moves iron core; 8-starting switch; 9-main coil; 10-moves iron core link; 11-stops lockhole; 12-stops iron block; 13-armature; 14-shutdown switch; 15-stops locking wire circle; 16-binding post; 17-current sensor; 18-winding wiring terminal.
Embodiment
Be described in more detail below in conjunction with the technical scheme of embodiment to this patent.
Refer to Fig. 1, a kind of overload protection energy saving ac contactor, comprise shell 1, main contactor 2, only lock device 3, overload current protection module 4 and binding post 16, described only lock device 3 is arranged on the right side of main contactor 2, described main contactor 2 comprises contact 5, secondary contact 6, dynamic iron core 7, starting switch 8, main coil 9 and dynamic iron core link 10, described dynamic iron core link 10 is arranged on the upper end of dynamic iron core 7, the right side of dynamic iron core link 10 is provided with only lockhole 11, described secondary contact 6 is arranged on the upper end of dynamic iron core link 10, described contact 5 is arranged on the upper end of secondary contact 6, contact 5 is all connected the input of overload current protection module 4 with secondary contact 6 one end, contact 5 other end is all connected the output of overload protection overcurrent protection module 4 with secondary contact 6 other end, described main coil 9 is arranged on the lower end of dynamic iron core 7, described only lock device 3 comprises only iron block 12, armature 13, shutdown switch 14 and only locking wire circle 15, described only iron block 12 is arranged in the only lockhole 11 of dynamic iron core link 10, described armature 13 is arranged on the right side of only iron block 12 and is connected with only iron block 12, described only locking wire circle 15 is arranged on only between iron block 12 and armature 13, dynamic iron core 7 is vertical motions, when main coil 9 is by power transmission, dynamic iron core 7 moves down, when dynamic iron core 7 is to bottom, just in time only lockhole 11 aims at only iron block 12, only locking wire circle 9 leads to the contact of A.C. contactor and normally closed shutdown switch 14 has electricity, rely on the magnetic of only iron block 12, only iron block 12 just in time supports and stops in lockhole 11, A.C. contactor is in on-state, unclamp starting switch 8, main coil 9 power-off quits work, press the power transmission button of A.C. contactor, main coil 9 in A.C. contactor is energized, produce magnetic, attract contact action, connect circuit, only locking wire circle 15 live line work, pin dynamic iron core 7, the main contacts of A.C. contactor no longer disconnects, and cut off the electricity of main coil 9, main coil 9 quits work, only locking wire circle 15 is only had to work, only the operating current of locking wire circle 15 is much smaller than the operating current of main coil 9, keeps the on-state of A.C. contactor, greatly reduce A.C. contactor self power consumption with the operating current that only locking wire circle 15 is very little.Described only locking wire circle 15 is connected with main coil 9; described binding post 16 is arranged on the left end of shell 1; current sensor 17 is installed with on the right side of binding post 16; described current sensor 17 has three; current sensor 17 is electrically connected with the input of overload current protection module 4 respectively; the other end of described main coil 9 connects the input on overload current protection module 4 by starting switch 8; overload current protection module 4 output also connecting coil binding post 18, described only locking wire circle 15 other end connecting coil binding post 18.
Described overload current protection module 4 comprises rectification circuit, switching circuit, circuits for triggering and executive circuit; current sensor is connected executive circuit by rectification circuit, switching circuit with circuits for triggering successively, and the output of executive circuit is serially connected between main coil 9 and winding wiring terminal 18.
The utility model structure is simple; during line work; can not power to A.C. contactor main coil completely; eliminate the power supply that A.C. contactor main coil keeps magnetic; the power saving of maintenance work state can reach 90%; and the overload current protection module 4 in the utility model can not affect major parameter and technical performance index that A.C. contactor itself possesses, does not separately take up room, easy-to-connect, cost are lower, overload current protection act is reliable and stable.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned execution mode, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (4)
1. an overload protection energy saving ac contactor, comprise shell (1), main contactor (2), only lock device (3), overload current protection module (4) and binding post (16), it is characterized in that, describedly only lock the right side that device (3) is arranged on main contactor (2), described main contactor (2) comprises contact (5), secondary contact (6), dynamic iron core (7), starting switch (8), main coil (9) and dynamic iron core link (10), described dynamic iron core link (10) is arranged on the upper end of dynamic iron core (7), the right side of dynamic iron core link (10) is provided with only lockhole (11), described secondary contact (6) is arranged on the upper end of dynamic iron core link (10), described contact (5) is arranged on the upper end of secondary contact (6), contact (5) is all connected the input of overload current protection module (4) with secondary contact (6) one end, contact (5) other end is all connected the output of overload protection overcurrent protection module (4) with secondary contact (6) other end, described main coil (9) is arranged on the lower end of dynamic iron core (7), described device (3) of only locking comprises only iron block (12), armature (13), shutdown switch (14) and only locking wire circle (15), described only iron block (12) is arranged in the only lockhole (11) of dynamic iron core link (10), described armature (13) is arranged on the right side of only iron block (12) and is connected with only iron block (12), described only locking wire circle (15) is arranged on only between iron block (12) and armature (13), described only locking wire circle (15) is connected with main coil (9), current sensor (17) is installed with on the right side of binding post (16), current sensor (17) is electrically connected with the input of overload current protection module (4) respectively, the other end of described main coil (9) connects the input on overload current protection module (4) by starting switch (8), overload current protection module (4) output is connecting coil binding post (18) also, described only locking wire circle (15) other end connecting coil binding post (18).
2. overload protection energy saving ac contactor according to claim 1, is characterized in that, described binding post (16) is arranged on the left end of shell (1).
3. overload protection energy saving ac contactor according to claim 1, is characterized in that, described current sensor (17) has three.
4. overload protection energy saving ac contactor according to claim 1; it is characterized in that; described overload current protection module (4) comprises rectification circuit, switching circuit, circuits for triggering and executive circuit; current sensor is connected executive circuit by rectification circuit, switching circuit with circuits for triggering successively, and the output of executive circuit is serially connected between main coil (9) and winding wiring terminal (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520326236.4U CN204651254U (en) | 2015-05-20 | 2015-05-20 | A kind of overload protection energy saving ac contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520326236.4U CN204651254U (en) | 2015-05-20 | 2015-05-20 | A kind of overload protection energy saving ac contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204651254U true CN204651254U (en) | 2015-09-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520326236.4U Expired - Fee Related CN204651254U (en) | 2015-05-20 | 2015-05-20 | A kind of overload protection energy saving ac contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204651254U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979783A (en) * | 2017-12-28 | 2019-07-05 | 中国石油天然气股份有限公司 | A kind of contactor |
| CN112786363A (en) * | 2021-01-29 | 2021-05-11 | 上海天义航实业有限公司 | Direct current contactor with intelligent protection function |
-
2015
- 2015-05-20 CN CN201520326236.4U patent/CN204651254U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979783A (en) * | 2017-12-28 | 2019-07-05 | 中国石油天然气股份有限公司 | A kind of contactor |
| CN112786363A (en) * | 2021-01-29 | 2021-05-11 | 上海天义航实业有限公司 | Direct current contactor with intelligent protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20160520 |
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| CF01 | Termination of patent right due to non-payment of annual fee |