CN201584759U - Double-motor linkage device of motor protector - Google Patents
Double-motor linkage device of motor protector Download PDFInfo
- Publication number
- CN201584759U CN201584759U CN2009202848217U CN200920284821U CN201584759U CN 201584759 U CN201584759 U CN 201584759U CN 2009202848217 U CN2009202848217 U CN 2009202848217U CN 200920284821 U CN200920284821 U CN 200920284821U CN 201584759 U CN201584759 U CN 201584759U
- Authority
- CN
- China
- Prior art keywords
- relay
- motor
- contactor
- coil
- protector
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Control Of Ac Motors In General (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The utility model discloses a double-motor linkage device of a motor protector device. One motor is matched with one linkage device, and the two linkage devices have same structure; each linkage device comprises a protector consisting of a current sampling circuit, a serial driving chip, a single chip microcomputer and a relay control circuit, a secondary control loop and an AC-DC switch power supply module, wherein the input end of the current sampling circuit is connected with a current transformer arranged on the three-phase input end of the motor, and the output end of the current sampling circuit is connected with the input end of the single chip microcomputer; the single chip microcomputer is communicated with the other linkage device through the serial driving chip, and the output end of the single chip microcomputer is connected with the relay control circuit in series and then is connected with the input end of the secondary control loop; and the AC-DC switch power supply module supplies power to the protector, and the secondary control loop and the power end of the AC-DC switch power supply module are connected with an external AC power supply. The utility model has high setting accuracy, accurate actuating time and stable synchronization.
Description
Technical field
The utility model is applied to two platforms to changeing the control and the protection field of motor; when the energy realization needs shutdown even counter-rotating when a motor generation stall; another motor is synchronization action also; thereby solved industrial production enterprise because of two platforms move the asynchronous production line fault that causes to changeing motor, belonged to two platforms changeing the electric automatization control field of motor.
Background technology
Two platforms generally are applied to the occasion that mining site, coal washery etc. need be pulverized mineral to changeing motor.This primary structure to the commentaries on classics form is made up of two motors, and they drive two Chan axles that are close together and rotate towards relative direction, thereby mineral are pulverized.Because the difference of the hardness of mineral, size, weight, some mineral block are difficult for pulverizing, even can snap between the Chan axle, the Chan axle can't be rotated, thereby cause the motor stall.The electric current of motor increases rapidly during stall, can reach more than 8 times of rated current, takes measures as untimely, can cause motor to burn out, and brings economic loss to enterprise; Simultaneously, the production procedure confusion that improper shut-down caused, loss of material, potential safety hazard also are very huge.To changeing, when motor generation stall wherein, must stop the running of two motors at first simultaneously for two platform motor, control two motors then and return down simultaneously, the thing piece that blocks is withdrawed from, recover then to turn round normally.If wherein a stall and another remains in operation can aggravate the harm of fault, cause two motors all can damage.Thereby being very important synchronously of two-shipper.
At present, the infringement of avoiding the stall problem to be brought generally adopts thermal overload relay or motor protecter to realize.Thermal overload relay mainly comprise thermal element, the control A.C. contactor of perception stator winding temperature normally closed interlock, be used to promote push rod bimetal leaf, be used to promote the herringbone driving lever of contact etc.Its operation principle is in motor operation course, and temperature is along with the size variation of electric current, and bimetal leaf is also inequality with different its crooked degree of temperature.When motor current is excessive when causing that temperature is too high, bimetal leaf will promote push rod and driving lever, breaking-off contact, thus disconnect the contactor electric current, make the motor circuit outage, motor is out of service.The shortcoming of this kind equipment is that its inside is extremely complicated; the physical property of each structure there are differences; unreliability sharply increases, maximum shortcoming be protect not meticulous, reaction speed slow, poor repeatability, along with prolongation validity and the precision of service time all can reduce.And, can not realize returning of motor for the occasion of two-shipper to commentaries on classics, and can not realize the synchronous of a plurality of thermal overload relaies, thereby can't finish Synchronization Control to two platform motor.And for general Intelligent Asynohornized Protector, mainly form by modules such as microprocessor, D.C mutual-inductor, relay controls, can accurately detect the electric current of motor circuit, the realization fault is accurately judged, and can be protected in time.But this class intelligent protector for motor intelligence is protected at a motor; a protector can only be protected a motor individually; can not carry out the mutual of information between the different protectors; for two platforms concerning changeing motor; even every motor all uses a protector; owing to can't communicate by letter between the protector, thereby also can't realize accurately shutting down synchronously and returning of two platform motor.At present also have some motor protector products to have the function of wireless networking, many protectors can by wireless module data centralization send on the station server, can utilize server to realize centralized control.But this class protector can only exchange with server, can't realize point-to-point direct communication between any two protectors, thereby still can't realize the function of two platform motor synchronous operations.
The utility model content
Technical problem: the utility model is at the stall problem of two platforms to the commentaries on classics motor; a kind of motor protector dual-machine linkage method and device are provided; when the energy realization needs shutdown even counter-rotating when a motor generation stall; another motor is synchronization action also, moves the asynchronous production line fault that cause because of two platforms to changeing motor thereby solved industrial production enterprise.
Technical scheme: the utility model adopts following technical scheme for achieving the above object:
A kind of motor protector dual-machine linkage of the utility model device; a motor is equipped with a linkage; two linkage structures are identical; each linkage all comprises by current sampling circuit; the serial port drive chip; single-chip microcomputer; protector and secondary control loop and AC-DC switch power module that control relay circuit constitutes; wherein the input of current sampling circuit is connected with current transformer on being arranged at the motor three-phase input end; the output of current sampling circuit connects the input of single-chip microcomputer; single-chip microcomputer is communicated by letter with another linkage by the serial port drive chip; connect the input of secondary control loop behind the output serial connection control relay circuit of single-chip microcomputer; the AC-DC switch power module is powered to protector, the power supply termination external ac power source of secondary control loop and AC-DC switch power module.
Beneficial effect: the utility model can realize when two platforms to change motor wherein one stall takes place and need to shut down even when reverse back; another motor is synchronization action also; thereby solved industrial production enterprise because of two platforms to changeing the asynchronous production line fault that causes of motor operation, have the precision of adjusting height, favorable repeatability, operate time accurately, characteristics such as synchronously accurate.
Description of drawings
Fig. 1 is that two platforms are to changeing the electric motor structure schematic diagram.
Fig. 2 is the utility model dual-machine linkage device and outside secondary control loop schematic diagram.Have among the figure: contactor KM1 normally closed auxiliary contact 56; contactor KM1 often leaves auxiliary contact 54, contactor KM2 normally closed auxiliary contact 57, and contactor KM2 often leaves auxiliary contact 55; first resistance R 1; second resistance R, 2, the three resistance R, 3, the first capacitor C 1; second capacitor C 2; serial communication chip 2, relay ZJ1 coil 41, relay ZJ2 coil 42; relay ZJ3 coil 43; 32 high-performance singlechip chips 3, AD sampling A 11, AC-DC switch power module 6; relay ZJ1 normally opened contact 51; relay ZJ2 normally opened contact 52, relay ZJ3 normally-closed contact 53, contactor KM1 coil 58; contactor KM1 coil 59; the first starting switch Q1, the second starting switch Q2, halt switch T1.
Fig. 3 is the concrete schematic diagram of using of this dual-machine linkage utility model method and device.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model method and device are described further.
As shown in Figure 1, adopt two platforms to changeing motor A and B on certain production line, every motor is the 380V threephase asynchronous, and supply frequency is the 50Hz power frequency, and motor adopts wye connection work.In electric control system, adopt air switch, A.C. contactor and the utility model method and device to carry out dual-machine linkage and rotation-clogging protection.Protector A and protector B correspond respectively to motor A and motor B carries out wiring shown in Figure 2, links to each other with serial ports between protector A and the protector B.General structure as shown in Figure 3.
As shown in Figure 2; a kind of motor protector dual-machine linkage device; it is characterized in that: a motor is equipped with a linkage; two linkage structures are identical; each linkage all comprises by current sampling circuit 1; serial port drive chip 2; single-chip microcomputer 3; protector and secondary control loop 5 and AC-DC switch power module 6 that control relay circuit 4 constitutes; wherein the input of current sampling circuit 1 is connected with current transformer on being arranged at the motor three-phase input end; the output of current sampling circuit 1 connects the input of single-chip microcomputer 3; single-chip microcomputer 3 is communicated by letter with another linkage by serial port drive chip 2; connect the input of secondary control loop 5 behind the output serial connection control relay circuit 4 of single-chip microcomputer 3; AC-DC switch power module 6 is to protector power supply, the power supply termination external ac power source of secondary control loop 5 and AC-DC switch power module 6.
Described a kind of motor protector dual-machine linkage device; it is characterized in that: described current sampling circuit 1 comprises first resistance R 1; second resistance R 2; the 3rd resistance R 3; first capacitor C 1; second capacitor C 2 and AD chip 11; wherein an end of first resistance R 1 connects the end of the same name of current transformer and an end of second resistance R 2 respectively; the other end of second resistance R 2 connects an end of first capacitor C 1 and the 3rd resistance R 3 respectively; the other end of the 3rd resistance R 3 connects an end of second capacitor C 2 and the sampling input of AD chip 11 respectively, the other end of first resistance R 1 respectively with the different name end and first capacitor C 1 of current transformer; the other end of second capacitor C 2 connects ground connection.
Described a kind of motor protector dual-machine linkage device; it is characterized in that: described control relay circuit 4 is made up of relay ZJ1 coil 41, relay ZJ2 coil 42, relay ZJ3 coil 43; relay ZJ1 coil 41, relay ZJ2 coil 42, relay ZJ3 coil 43 link to each other with processor by Internal Control Bus IBC respectively, and with and be connected with the input of secondary control loop 5.
Described a kind of motor protector dual-machine linkage device, it is characterized in that: described secondary control loop 5 is by the first starting switch Q1, the second starting switch Q2, relay ZJ1 normally opened contact 51, relay ZJ2 normally opened contact 52, relay ZJ3 normally-closed contact 53, the first A.C. contactor KM1 often drives auxiliary contact 54, the second A.C. contactor KM2 often drives auxiliary contact 55, the first A.C. contactor KM1 normally closed auxiliary contact 56, the second A.C. contactor KM2 normally closed auxiliary contact 57, the first A.C. contactor KM1 coil 58 and the second A.C. contactor KM2 coil 59 constitute, one end of its repeat circuit ZJ1 normally opened contact 51 respectively with relay ZJ2 normally opened contact 52, one end of relay ZJ3 normally-closed contact 53 connects the back and is connected on the neutral line N of external ac power source by the first binding post a, relay ZJ1 normally opened contact 51 other ends link to each other with the 5th binding post e, and relay ZJ2 normally opened contact 52 other ends link to each other with the 3rd binding post c; The first A.C. contactor KM1 often drives auxiliary contact 54 and the first starting switch Q1, one end is parallel on the 4th binding post d, and the other end is parallel on the 5th binding post e; The second A.C. contactor KM2 often drives auxiliary contact 55 and the second starting switch Q2, one end is parallel on the 4th binding post d, and the other end is parallel on the 3rd binding post c; Receive on the L of power line mutually of external ac power source by the second binding post b after the one end parallel connection of one end of the first A.C. contactor KM1 normally closed auxiliary contact 56 and the second A.C. contactor KM2 normally closed auxiliary contact 57; The first A.C. contactor KM1 coil, 58 1 ends link to each other with the 3rd binding post c, and the other end links to each other with the other end of the second A.C. contactor KM2 normally closed auxiliary contact 57; The second A.C. contactor KM2 coil, 59 1 ends link to each other with the 5th binding post e, and the other end links to each other with the other end of the first A.C. contactor KM1 normally closed auxiliary contact 56; Shutdown switch T1 one end links to each other with the 4th binding post d, and the other end links to each other with the other end of relay ZJ3 normally-closed contact 53.
When wherein a motor A starts, air switch is got to closing position, press start button Q2, this moment is because relay ZJ3 normally-closed contact 53 is in the acquiescence normally off, therefore A.C. contactor KM1 coil 58 gets main contacts electric and adhesive A.C. contactor KM1 from control loop, contactor KM1 normally closed auxiliary contact 56 disconnects simultaneously, and threephase asynchronous normally starts.Two platforms are also operated by this step another B of rotating motor, and then two motors all are in normal operation.Normal work period, 32 high-performance singlechip CPU chips 3 carry out real-time data acquisition by the current sampling circuit be made up of AD sampling A 11 and first resistance R 1, second resistance R 2, the 3rd resistance R 3, first capacitor C 1, second capacitor C 2 to the three-phase current of motor, operating state to low-voltage three phase asynchronous motor is monitored in real time, thereby judges that motor is in normal mode of operation always.
The synchronizing process of motor A and motor B is as follows:
Step 1: suppose that in normal course of operation motor A begins to take place stall, 32 high-performance singlechip CPU chips 3 of protector A inside detect current electric current and have surpassed the critical value that stall takes place, and this moment, cpu chip 3 picked up counting.When the time that stall takes place has surpassed the maximum that can allow, think that then motor has run into the hard thing that can not pulverize, need hard stop.At this moment cpu chip 3 control relay ZJ3 coils 43, make relay ZJ3 normally-closed contact 53 do once tripping operation action, this moment first, A.C. contactor KM1 coil 58 was because control loop dead electricity thereby also dead electricity, thereby discharged the first A.C. contactor KM1 main contacts, disconnected major loop.Simultaneously; the cpu chip 3 of protector A inside sends an information to protector B by serial ports; inform that protector B should shut down now; the cpu chip 3 of protector B inside is after receiving this message; control the relay ZJ3 coil 43 of B inside immediately; make relay ZJ3 normally-closed contact 53 do once tripping operation action, thereby disconnect the major loop of motor B, so just realized the synchronous shutdown of motor A and motor B.
Step 2: when the loop of motor A disconnected, because motor inertia, still at decelerate, the 32 bit CPU chips 3 of protector A just picked up counting, and waited for that motor shuts down fully.Timing finishes; this moment protector A CPU control relay ZJ1 coil 41; make relay ZJ1 normally opened contact 51 do feed motion one time; this moment, the second A.C. contactor KM2 coil 59 got main contacts electric thereby adhesive A.C. contactor KM2 from control loop; because the wiring phase sequence of KM2 main contacts is anti-phase, thereby motor reverses back.The cpu chip 3 of protector A inside is when control normally opened contact 51 closes a floodgate; send an information to protector B by serial ports; inform that protector B should reverse back now; the cpu chip 3 of protector B inside is after receiving this message; control the relay ZJ1 coil 41 of B inside immediately; make relay ZJ1 normally opened contact 51 do feed motion one time, thereby make motor B also reverse back, so just finished the synchronous counter-rotating of motor A and motor B.
Step 3: the cpu chip 3 of protector A calculates the time of counter-rotating operation, when reaching certain value, thinks that two platforms withdraw from the hard thing that blocks the Chan axle changeing motor, and should stop counter-rotating this moment.The cpu chip 3 control relay ZJ3 coils 43 of protector A; make relay ZJ3 normally-closed contact 53 do once tripping operation action; this moment second, A.C. contactor KM2 coil 59 was because control loop dead electricity thereby also dead electricity, thereby discharged the second A.C. contactor KM2 main contacts, disconnected major loop.Simultaneously; the cpu chip 3 of protector A inside sends an information to protector B by serial ports; inform that protector B should shut down now; the cpu chip 3 of protector B inside is after receiving this message; control the relay ZJ3 coil 43 of B inside immediately; make relay ZJ3 normally-closed contact 53 do once tripping operation action, thereby disconnect the major loop of motor B, so just realized the synchronous shutdown of motor A and motor B.
Step 4: when the counter-rotating loop of motor A disconnected, because motor inertia, still at decelerate, the 32 bit CPU chips 3 of protector A just picked up counting, and waited for that motor shuts down fully.Timing finishes; this moment protector A CPU control relay ZJ2 coil 42; make relay ZJ2 normally opened contact 52 do feed motion one time, this moment, the first A.C. contactor KM1 coil 58 got main contacts electric thereby adhesive A.C. contactor KM1 from control loop, thereby motor begins normal startup.The cpu chip 3 of protector A inside is when control normally opened contact 52 closes a floodgate; send an information to protector B by serial ports; inform that protector B should normally start now; the cpu chip 3 of protector B inside is after receiving this message; control the relay ZJ2 coil 42 of B inside immediately; make relay ZJ1 normally opened contact 52 do feed motion one time, thereby motor B is also normally started, so just finished the normal synchronously of motor A and motor B and started.
This shows that if be that stall takes place earlier motor A when normally moving, the action of protector B is protected the control of device A so, a series of actions of motor B is all moved with motor A.In like manner, if be that stall takes place earlier motor B when normally moving, a series of actions of motor A is all moved with motor B so, but concrete steps analogy step 1 obtains to step 4.
In sum, the utility model is to have utilized two protectors that two platforms are protected changeing motor, communicates by serial ports between two processors.Processor detects by the running status of current sampling circuit to motor, differentiates motor whether stall takes place.Two-shipper is to changeing motor after running into the stall fault; through above-mentioned four steps; come the state of secondary control loop is controlled by control relay circuit; can synchronously shut down, wait for, reverse, shut down, wait for, normally start a series of so precisely orderly actions automatically; can be under the situation that does not need human intervention; automatically get rid of the stall fault, realize intelligent control.The design has the sampling precision height, the precision of adjusting height, favorable repeatability, operate time accurately, characteristics such as synchronously accurate.
The parameter that needs to be provided with has 5, and it is defined as follows:
Locked rotor current definite value Id: electric current surpasses this and thinks more than value and enter stall;
Allow stall time tq: allow electric current to surpass locked rotor current and continue maximum time;
Wait for ty downtime: motor outage back is because the time that inertia still can continue to rotate;
The tf of falling time reverses back: motor withdraws from the needed counter-rotating time of returning down of hard thing;
A closed duration of burst length to:ZJ1, ZJ2 and ZJ3 disconnect a duration.
Take turns the overall process of above-mentioned steps one if recur 3 within a short period of time to step 4; think that then two platforms can't crush by pushing repeatedly to the hard thing that rotating motor runs into; so then by 32 high-performance singlechip CPU chips, 3 control relay ZJ3 coils 43; make relay ZJ3 normally-closed contact 53 do once tripping operation action; thereby disconnection major loop; the protection motor is restarted motor no longer automatically, and the wait personnel handle and change hard thing.
If in the process of reversing back stall has taken place also; think then that hard thing can't reverse and withdraw from; so then by 32 high-performance singlechip CPU chips, 3 control relay ZJ3 coils 43; make relay ZJ3 normally-closed contact 53 do once tripping operation action; thereby disconnection major loop; the protection motor is restarted motor no longer automatically, and the wait personnel handle and change hard thing.
If in course of normal operation, need to stop two platforms to changeing motor, can realize by pressing stop button T1.
More than by preferred embodiment embodiment of the present utility model has been described; but it should be understood that; aforementioned concrete description should not be construed as the qualification to essence of the present utility model and scope; the various modifications that the one of ordinary skilled in the art makes the foregoing description after reading this specification all belong to the scope that the utility model is protected.
Claims (4)
1. motor protector dual-machine linkage device; it is characterized in that: a motor is equipped with a linkage; two linkage structures are identical; each linkage all comprises by current sampling circuit (1); serial port drive chip (2); single-chip microcomputer (3); protector and secondary control loop (5) and AC-DC switch power module (6) that control relay circuit (4) constitutes; wherein the input of current sampling circuit (1) is connected with current transformer on being arranged at the motor three-phase input end; the output of current sampling circuit (1) connects the input of single-chip microcomputer (3); single-chip microcomputer (3) is communicated by letter with another linkage by serial port drive chip (2); connect the input of secondary control loop (5) behind the output serial connection control relay circuit (4) of single-chip microcomputer (3); AC-DC switch power module (6) is to protector power supply, the power supply termination external ac power source of secondary control loop (5) and AC-DC switch power module (6).
2. a kind of motor protector dual-machine linkage device according to claim 1; it is characterized in that: described current sampling circuit (1) comprises first resistance (R1); second resistance (R2); the 3rd resistance (R3); first electric capacity (C1); second electric capacity (C2) and AD chip (11); wherein an end of first resistance (R1) connects the end of the same name of current transformer and an end of second resistance (R2) respectively; the other end of second resistance (R2) connects an end of first electric capacity (C1) and the 3rd resistance (R3) respectively; the other end of the 3rd resistance (R3) connects an end of second electric capacity (C2) and the sampling input of AD chip (11) respectively, the other end of first resistance (R1) respectively with the different name end and first electric capacity (C1) of current transformer; the other end of second electric capacity (C2) connects ground connection.
3. a kind of motor protector dual-machine linkage device according to claim 1; it is characterized in that: described control relay circuit (4) is made up of relay ZJ1 coil (41), relay ZJ2 coil (42), relay ZJ3 coil (43); relay ZJ1 coil (41), relay ZJ2 coil (42), relay ZJ3 coil (43) link to each other with processor by Internal Control Bus IBC respectively, and with and be connected with the input of secondary control loop (5).
4. a kind of motor protector dual-machine linkage device according to claim 1, it is characterized in that: described secondary control loop (5) is by first starting switch (Q1), second starting switch (Q2), relay ZJ1 normally opened contact (51), relay ZJ2 normally opened contact (52), relay ZJ3 normally-closed contact (53), the first A.C. contactor KM1 often drives auxiliary contact (54), the second A.C. contactor KM2 often drives auxiliary contact (55), the first A.C. contactor KM1 normally closed auxiliary contact (56), the second A.C. contactor KM2 normally closed auxiliary contact (57), the first A.C. contactor KM1 coil (58) and the second A.C. contactor KM2 coil (59) constitute, one end of its repeat circuit ZJ1 normally opened contact (51) respectively with relay ZJ2 normally opened contact (52), one end of relay ZJ3 normally-closed contact (53) connects the back and is connected on the neutral line (N) of external ac power source by first binding post (a), relay ZJ1 normally opened contact (51) other end links to each other with the 5th binding post (e), and relay ZJ2 normally opened contact (52) other end links to each other with the 3rd binding post (c); The first A.C. contactor KM1 often drives auxiliary contact (54) and first starting switch (Q1) end is parallel on the 4th binding post (d), and the other end is parallel on the 5th binding post (e); The second A.C. contactor KM2 often drives auxiliary contact (55) and second starting switch (Q2) end is parallel on the 4th binding post (d), and the other end is parallel on the 3rd binding post (c); Receive on the power line mutually (L) of external ac power source by second binding post (b) after the one end parallel connection of one end of the first A.C. contactor KM1 normally closed auxiliary contact (56) and the second A.C. contactor KM2 normally closed auxiliary contact (57); The first A.C. contactor KM1 coil (58) one ends link to each other with the 3rd binding post (c), and the other end links to each other with the other end of the second A.C. contactor KM2 normally closed auxiliary contact (57); The second A.C. contactor KM2 coil (59) one ends link to each other with the 5th binding post (e), and the other end links to each other with the other end of the first A.C. contactor KM1 normally closed auxiliary contact (56); Shutdown switch (T1) end links to each other with the 4th binding post (d), and the other end links to each other with the other end of relay ZJ3 normally-closed contact (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202848217U CN201584759U (en) | 2009-12-28 | 2009-12-28 | Double-motor linkage device of motor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202848217U CN201584759U (en) | 2009-12-28 | 2009-12-28 | Double-motor linkage device of motor protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201584759U true CN201584759U (en) | 2010-09-15 |
Family
ID=42726771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202848217U Expired - Lifetime CN201584759U (en) | 2009-12-28 | 2009-12-28 | Double-motor linkage device of motor protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201584759U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741294B (en) * | 2009-12-28 | 2013-01-02 | 东南大学 | Motor protector dual-machine linkage method and linkage device |
| CN103414161A (en) * | 2013-07-15 | 2013-11-27 | 国家电网公司 | Motor forward/reverse rotation protection device |
| CN105429103A (en) * | 2015-12-31 | 2016-03-23 | 温州佳华仪表电气科技有限公司 | Three-phase motor protector |
| CN106849815A (en) * | 2016-11-22 | 2017-06-13 | 辽宁东鹰航空装备科技股份有限公司 | Electromotor control circuit |
| CN106849014A (en) * | 2017-03-23 | 2017-06-13 | 马鞍山工蜂智能科技有限公司 | A kind of motor safety controls circuit system |
| CN108695827A (en) * | 2018-07-04 | 2018-10-23 | 天地（常州）自动化股份有限公司 | The heavy water processing control circuit of dense medium speed |
| CN109194201A (en) * | 2018-09-14 | 2019-01-11 | 河南森尼瑞电气有限公司 | A kind of motor linkage control method based on motor protector |
| CN112289619A (en) * | 2020-10-21 | 2021-01-29 | 山东泰开智能配电有限公司 | Control device for grounding switch |
-
2009
- 2009-12-28 CN CN2009202848217U patent/CN201584759U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741294B (en) * | 2009-12-28 | 2013-01-02 | 东南大学 | Motor protector dual-machine linkage method and linkage device |
| CN103414161A (en) * | 2013-07-15 | 2013-11-27 | 国家电网公司 | Motor forward/reverse rotation protection device |
| CN105429103A (en) * | 2015-12-31 | 2016-03-23 | 温州佳华仪表电气科技有限公司 | Three-phase motor protector |
| CN106849815A (en) * | 2016-11-22 | 2017-06-13 | 辽宁东鹰航空装备科技股份有限公司 | Electromotor control circuit |
| CN106849815B (en) * | 2016-11-22 | 2023-07-21 | 辽宁东鹰航空装备科技股份有限公司 | Motor control circuit |
| CN106849014A (en) * | 2017-03-23 | 2017-06-13 | 马鞍山工蜂智能科技有限公司 | A kind of motor safety controls circuit system |
| CN108695827A (en) * | 2018-07-04 | 2018-10-23 | 天地（常州）自动化股份有限公司 | The heavy water processing control circuit of dense medium speed |
| CN108695827B (en) * | 2018-07-04 | 2024-02-06 | 天地（常州）自动化股份有限公司 | Heavy medium fast submerged processing control circuit |
| CN109194201A (en) * | 2018-09-14 | 2019-01-11 | 河南森尼瑞电气有限公司 | A kind of motor linkage control method based on motor protector |
| CN112289619A (en) * | 2020-10-21 | 2021-01-29 | 山东泰开智能配电有限公司 | Control device for grounding switch |
| CN112289619B (en) * | 2020-10-21 | 2023-09-15 | 山东泰开智能配电有限公司 | Control device for grounding switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201584759U (en) | Double-motor linkage device of motor protector | |
| CN101741294B (en) | Motor protector dual-machine linkage method and linkage device | |
| CN201594749U (en) | Alternating current motor synchronization grid-connected switching device | |
| CN205829289U (en) | High pressure undisturbed electric supply installation | |
| CN106849014A (en) | A kind of motor safety controls circuit system | |
| CN203399029U (en) | Dual-motor switching starting control device | |
| CN102005994A (en) | Same-phase switching circuit and actuating device of rare-earth permanent magnet synchronous electric motor | |
| CN110190585B (en) | B-type residual current monitoring and action circuit breaker with wireless transmission function | |
| CN206180586U (en) | Isolated island operation system based on cement plant cogeneration | |
| CN201733267U (en) | Power reset self-starting device for asynchronous motor | |
| CN101814875B (en) | Mutual inductance type contactless starter used for single-phase alternating current motor | |
| CN202475348U (en) | Controlling device for mine-used explosion-proof type permanent-magnet synchronous motor | |
| CN201869144U (en) | Novel control cabinet for positive and negative rotation of electric motor | |
| CN207869016U (en) | A kind of circuit for remotely controlling for tunnel muck loader motor | |
| CN203984280U (en) | Mutual-inductance contactless electric current starter for commercial refrigeration compressor electric motor | |
| CN202889265U (en) | Soft starter control system driving three-phase squirrel cage asynchronous motor to operate | |
| CN204705848U (en) | A kind of 10kV power network line isolating switch long distance control system | |
| CN202405853U (en) | 110-KV double-circuit parallel running line reclosing input line | |
| CN204068775U (en) | The mutual-inductance contactless current starter of commercial refrigeration compressor electric motor | |
| CN203984278U (en) | Commercial refrigeration compressor electric motor mutual-inductance contactless electric current starter | |
| CN202045667U (en) | Slicer circuit capable of realizing spindle scram | |
| CN201656870U (en) | Novel mutual induction type contactless starter | |
| CN101847959B (en) | Novel mutual-inductance contactless starter | |
| CN201039050Y (en) | Automatic conversion protector of three-phase asynchronous motor | |
| CN2424575Y (en) | Intelligent energy saving drive appts. of oil field beam-pumping unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100915 Effective date of abandoning: 20091228 |
|
| RGAV | Abandon patent right to avoid regrant |