CN104467552A - Three-phase switch capable of being controlled in delayed mode - Google Patents
Three-phase switch capable of being controlled in delayed mode Download PDFInfo
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- CN104467552A CN104467552A CN201410682269.2A CN201410682269A CN104467552A CN 104467552 A CN104467552 A CN 104467552A CN 201410682269 A CN201410682269 A CN 201410682269A CN 104467552 A CN104467552 A CN 104467552A
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- 230000003111 delayed effect Effects 0.000 title abstract 4
- 239000004020 conductor Substances 0.000 claims description 21
- 230000001934 delay Effects 0.000 claims description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
- H02P1/40—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor in either direction of rotation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
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Abstract
The invention discloses a three-phase switch capable of being controlled in a delayed mode. The three-phase switch capable of being controlled in the delayed mode comprises a box body, a first electronic switch, a second electronic switch, a third electronic switch, a fourth electronic switch, a fifth electronic switch, a control system and an input device, wherein three wire inlet ends and three wire outlet ends are arranged in the box body, the electronic switches are arranged on a wire between the wire inlets end and the wire outlet ends, the input device is used for inputting operating and stopping instructions to the control system, and the control system controls the electronic switches according to the input instructions of the input device. The three-phase switch capable of being controlled in the delayed mode has the advantages of being safe to use and convenient to operate.
Description
Technical field
The present invention relates to a kind of manufacture field of threephase switch.
Background technology
Threephase switch is common electronic original part, when processing hardware products with measuring truck, threephase switch is all adopted to carry out the motor of control instrument car, this threephase switch is all generally two-direction switch, namely have suitable, fall, stop third gear, when product is in machining state, operator gets to threephase switch " cis-position ", motor rotates forward to drive measuring truck to complete the processing of product, when a Product processing complete need stop measuring truck time, operator gets to " falling " position threephase switch, then " stopping " position is switched to again fast, the electronic function of measuring truck like this is stopped at once, in this course, operator gets to " falling " position mainly in order to offset the inertia that motor rotates forward threephase switch, shorten the down time of measuring truck, otherwise, as operator is directly switched to " stopping " position from " suitable " position threephase switch, motor also needs to rotate forward a period of time under effect of inertia, operator can only wait for the operation just carrying out next product after motor stops completely, have impact on operating efficiency, but use the motor of Three-phase Switch Controller measuring truck to carry out control existence two apparent shortcomings: one, Three-phase switch realizes switch by changeover contact, once electric leakage entail dangers to operator, two, when needs stop motor, operator need get to Three-phase switch " falling " position, then " stopping " position is switched to again fast, this action is more loaded down with trivial details, easy not, application number be 87210260 Chinese patent made useful improvement, disclose a kind of three-phase contactless electronics two-direction switch, it is by switch magnetic controller, the switch main controller of bidirectional triode thyristor combination and switch joystick controller composition, so make in switch process contactless, namely this two-direction switch is once electric leakage, also operator can not be touched, fail safe improves greatly, but this technology still has its weak point, this switch still has suitable, stop, third gear, when needs stop motor fast, operate more loaded down with trivial details.
Summary of the invention
The technical problem to be solved in the present invention is the present situation for prior art, provide a kind of safe and reliable threephase switch, and this threephase switch is easy and simple to handle.
The technical scheme that the present invention solves the problem is: a kind of threephase switch of energy delays time to control, comprise box body, be provided with three ends of incoming cables and three leading-out terminals in box body, three ends of incoming cables are followed successively by the first end of incoming cables, the second end of incoming cables, the 3rd end of incoming cables, three leading-out terminals are followed successively by the first leading-out terminal, the second leading-out terminal, the 3rd leading-out terminal, also comprise the first electronic switch, the second electronic switch, the 3rd electronic switch, 4th electronic switch, 5th electronic switch, control system, input unit; First electronic switch is arranged on the first end of incoming cables on the conductor wire of the first leading-out terminal, second electronic switch is arranged on the first end of incoming cables on the conductor wire of the second leading-out terminal, 3rd electronic switch is arranged on the second end of incoming cables on the conductor wire of the first leading-out terminal, 4th electronic switch is arranged on the second end of incoming cables on the conductor wire of the second leading-out terminal, and the 5th electronic switch is arranged on the 3rd end of incoming cables on the conductor wire of the 3rd leading-out terminal; Input unit is in order to run to control system input, to stop two kinds of orders; Control system controls the first electronic switch, the second electronic switch, the 3rd electronic switch, the 4th electronic switch, the 5th electronic switch according to the input command of input unit, be specially: when described control system receives action command, control system controls the first electronic switch, the 4th electronic switch, the 5th electronic switch are in out position, and the second electronic switch, the 3rd electronic switch are in off-position; When control system receive cease and desist order time, control system first controls whole electronic switch and is in off-position, then control system controls the second electronic switch, the 3rd electronic switch, the 5th electronic switch be in out position, and the first electronic switch, the 4th electronic switch are in off-position, when this state maintains after setting-up time, control system controls the first electronic switch, the second electronic switch, the 3rd electronic switch, the 4th electronic switch, the 5th electronic switch are in off-position.Threephase switch of the present invention in use, the triple line of power supply is connected on three ends of incoming cables of switch respectively, three terminals of motor are connected on three leading-out terminals of switch respectively, when needs motor rotates forward, operator inputs action command by input unit to control system, control system controls the first electronic switch, the 4th electronic switch, the 5th electronic switch are in out position, and the second electronic switch, the 3rd electronic switch are in off-position, namely each leading-out terminal is communicated with an end of incoming cables, motor is connected three phase mains and is rotated forward, when needs stop motor fast, operator is ceased and desisted order to control system input by input unit, control system first controls whole electronic switch and is in off-position, power supply is no longer for rotating forward of motor provides energy, then control system controls the second electronic switch, 3rd electronic switch, 5th electronic switch is in out position, and the first electronic switch, 4th electronic switch is in off-position, three phase mains connected by motor, but the phase place of three phase mains changes, after this state maintains setting-up time, the original inertia rotated forward of motor is suppressed, and then, control system controls the first electronic switch, second electronic switch, 3rd electronic switch, 4th electronic switch, 5th electronic switch is in off-position, motor just stops at once, compared to prior art, threephase switch of the present invention is when closing down motor fast, as long as operator carries out once-through operation by input unit, and the threephase switch of prior art has to pass through secondary operation when closing down motor fast, process 15000 hardware products every day with a workman to calculate, then can omit 15000 operating procedures, efficiency improves greatly.In the present invention program, widely apply electronic switch, electronic switch is a kind of general electronic original part, be widely used at electro-mechanical arts, as a washing machine that Siemens produces, after pressing cleaning button, washing machine carries out adding liquid detergent successively, add water, the job step of rotary drum, the essence of this running is exactly after the control system of washing machine receives instruction, each electronic switch is carried out to the result of cooperation control, and if the program with time correlation is set in the controls, electronic switch also can delay switch, as arranged delay procedure in the control system of television set, television set can close corresponding electronic switch to realize shutdown after delay setting-up time.In reality manufactures, single-chip microcomputer is often adopted to control electronic switch as control system.
Input unit is in order to run to control system input, to stop two kinds of orders, particularly important for purposes of the invention, input unit should be made simple, rationally as far as possible.
Preferably, input unit comprises a pedestal, pedestal is provided with an aperture, the opening part of aperture is stamped a light-passing board, is provided with a light-inductive device bottom aperture, when light-passing board is subject to finger presses, the stop pointed, light-inductive device can not receive light, and inputs an induced signal to control system thus, control system is judged to be action command the induced signal of the odd-times received, and control system is judged to the induced signal of the even-times received to cease and desist order.In the technical program, be judged to be action command when control system receives first time induced signal, be judged to cease and desist order when receiving second time induced signal, the rest may be inferred thereafter.
Preferably, input unit is a push-button switch, and push-button switch is connected with control system, and push-button switch is in out an interval scale and inputs action command to control system, and push-button switch is in off-position interval scale and ceases and desist order to control system input.
Obviously, input unit also can have more technical scheme as a kind of binary signal input unit, and the various switches of prior art are all suitable as input unit of the present invention.
Setting-up time should according to the condition of production of reality, the model of motor and determining.
Preferably, setting-up time is 90 milliseconds.
Preferably, setting-up time is 106 milliseconds.
Compared with prior art, the present invention is a kind of threephase switch of energy delays time to control, comprise box body, be provided with three ends of incoming cables and three leading-out terminals in box body, also comprise the first electronic switch, second electronic switch, 3rd electronic switch, the 4th electronic switch, the 5th electronic switch, control system, input unit; Each electronic switch is arranged on the conductor wire between end of incoming cables and leading-out terminal, and input unit is in order to run to control system input, to stop two kinds of orders; Control system controls each electronic switch according to the input command of input unit, and the present invention has the following advantages: use safety, and operation is convenient.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the embodiment of the present invention 1;
Fig. 2 is the overall structure schematic diagram of the embodiment of the present invention 2;
Fig. 3 is control system and the first electronic switch in the embodiment of the present invention 2, the second electronic switch, the 3rd electronic switch, the 4th electronic switch, the 5th electronic switch, the interconnective structural representation of input unit.
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1
A kind of threephase switch of energy delays time to control, comprise box body 1, be provided with three ends of incoming cables and three leading-out terminals in box body 1, three ends of incoming cables are followed successively by the first end of incoming cables A1, the second end of incoming cables A2, the 3rd end of incoming cables A3, three leading-out terminals are followed successively by the first leading-out terminal B1, the second leading-out terminal B2, the 3rd leading-out terminal B3, also comprise the first electronic switch D1, the second electronic switch D2, the 3rd electronic switch D3,4th electronic switch D4,5th electronic switch D5, control system C, input unit; First electronic switch D1 is arranged on the conductor wire of the first end of incoming cables A1 to the first leading-out terminal B1, second electronic switch D2 is arranged on the conductor wire of the first end of incoming cables A1 to the second leading-out terminal B2,3rd electronic switch D3 is arranged on the conductor wire of the second end of incoming cables A2 to the first leading-out terminal B1,4th electronic switch D4 is arranged on the conductor wire of the second end of incoming cables A2 to the second leading-out terminal B2, and the 5th electronic switch D5 is arranged on the conductor wire of the 3rd end of incoming cables A3 to the 3rd leading-out terminal B3; Input unit is in order to run to control system C input, to stop two kinds of orders; Control system C controls the first electronic switch D1, the second electronic switch D2, the 3rd electronic switch D3, the 4th electronic switch D4, the 5th electronic switch D5 according to the input command of input unit, be specially: when control system C receives action command, control system C controls the first electronic switch D1, the 4th electronic switch D4, the 5th electronic switch D5 is in out position, and the second electronic switch D2, the 3rd electronic switch D3 are in off-position; When control system C receive cease and desist order time, control system C first controls whole electronic switch and is in off-position, then control system C controls the second electronic switch D2, the 3rd electronic switch D3, the 5th electronic switch D5 is in out position, and the first electronic switch D1, the 4th electronic switch D4 are in off-position, when this state maintains after setting-up time, control system C controls the first electronic switch D1, the second electronic switch D2, the 3rd electronic switch D3, the 4th electronic switch D4, the 5th electronic switch D5 are in off-position.
Wherein, input unit comprises a pedestal R1, pedestal R1 is provided with an aperture R2, the opening part of aperture R2 is stamped a light-passing board R3, a light-inductive device R4 is provided with bottom aperture R2, when light-passing board R3 is subject to finger presses, the stop pointed, light-inductive device R4 can not receive light, and input an induced signal to control system C thus, control system C is judged to be action command the induced signal of the odd-times received, and control system C is judged to the induced signal of the even-times received to cease and desist order.
Wherein, setting-up time is 90 milliseconds.
The present invention is achieved in that threephase switch of the present invention in use, the triple line of power supply is connected on three ends of incoming cables of switch respectively, three terminals of motor are connected on three leading-out terminals of switch respectively, when needs motor rotates forward, operator inputs action command by input unit to control system C, the i.e. induced signal from light-inductive device R4 of odd-times that receives of control system C, control system C controls the first electronic switch D1, 4th electronic switch D4, 5th electronic switch D5 is in out position, and the second electronic switch D2, 3rd electronic switch D3 is in off-position, namely each leading-out terminal is communicated with an end of incoming cables, motor is connected three phase mains and is rotated forward, when needs stop motor fast, operator is ceased and desisted order to control system C input by input unit, the i.e. induced signal from light-inductive device R4 of even-times that receives of control system C, control system C first controls whole electronic switch and is in off-position, power supply is no longer for rotating forward of motor provides energy, then control system C controls the second electronic switch D2, 3rd electronic switch D3, 5th electronic switch D5 is in out position, and the first electronic switch D1, 4th electronic switch D4 is in off-position, three phase mains connected by motor, but the phase place of three phase mains changes, after this state maintains 90 milliseconds, the original inertia rotated forward of motor is suppressed, and then, control system C controls the first electronic switch D1, second electronic switch D2, 3rd electronic switch D3, 4th electronic switch D4, 5th electronic switch D5 is in off-position, motor just stops at once, compared to prior art, threephase switch of the present invention is when closing down motor fast, as long as carry out once-through operation by input unit, and the threephase switch of prior art has to pass through secondary operation when closing down motor fast, process 15000 hardware products every day with a workman to calculate, then can omit 15000 operating procedures, efficiency improves greatly.
Embodiment 2
A kind of threephase switch of energy delays time to control, comprise box body 1, be provided with three ends of incoming cables and three leading-out terminals in box body 1, three ends of incoming cables are followed successively by the first end of incoming cables A1, the second end of incoming cables A2, the 3rd end of incoming cables A3, three leading-out terminals are followed successively by the first leading-out terminal B1, the second leading-out terminal B2, the 3rd leading-out terminal B3, also comprise the first electronic switch D1, the second electronic switch D2, the 3rd electronic switch D3,4th electronic switch D4,5th electronic switch D5, control system C, input unit; First electronic switch D1 is arranged on the conductor wire of the first end of incoming cables A1 to the first leading-out terminal B1, second electronic switch D2 is arranged on the conductor wire of the first end of incoming cables A1 to the second leading-out terminal B2,3rd electronic switch D3 is arranged on the conductor wire of the second end of incoming cables A2 to the first leading-out terminal B1,4th electronic switch D4 is arranged on the conductor wire of the second end of incoming cables A2 to the second leading-out terminal B2, and the 5th electronic switch D5 is arranged on the conductor wire of the 3rd end of incoming cables A3 to the 3rd leading-out terminal B3; Input unit is in order to run to control system C input, to stop two kinds of orders; Control system C controls the first electronic switch D1, the second electronic switch D2, the 3rd electronic switch D3, the 4th electronic switch D4, the 5th electronic switch D5 according to the input command of input unit, be specially: when control system C receives action command, control system C controls the first electronic switch D1, the 4th electronic switch D4, the 5th electronic switch D5 is in out position, and the second electronic switch D2, the 3rd electronic switch D3 are in off-position; When control system C receive cease and desist order time, control system C first controls whole electronic switch and is in off-position, then control system C controls the second electronic switch D2, the 3rd electronic switch D3, the 5th electronic switch D5 is in out position, and the first electronic switch D1, the 4th electronic switch D4 are in off-position, when this state maintains after setting-up time, control system C controls the first electronic switch D1, the second electronic switch D2, the 3rd electronic switch D3, the 4th electronic switch D4, the 5th electronic switch D5 are in off-position.
Wherein, input unit is a button switch K, and button switch K is connected with control system C, and button switch K is in out an interval scale and inputs action command to control system C, and button switch K is in off-position interval scale and ceases and desist order to control system C input.
Wherein, setting-up time is 106 milliseconds.
Wherein, control system C is a single-chip microcomputer Z, the pair of pins Z1 of single-chip microcomputer Z is connected with the first electronic switch D1, second couple of pin Z2 of single-chip microcomputer Z is connected with the second electronic switch D2, the 3rd couple of pin Z3 of single-chip microcomputer Z is connected with the 3rd electronic switch D3, the 4th couple of pin Z4 of single-chip microcomputer Z is connected with the 4th electronic switch D4, and the 5th couple of pin Z5 of single-chip microcomputer Z is connected with the 5th electronic switch D5, and the 6th couple of pin Z6 of single-chip microcomputer Z is connected with button switch K.
The present invention is achieved in that threephase switch of the present invention in use, the triple line of power supply is connected on three ends of incoming cables of switch respectively, three terminals of motor are connected on three leading-out terminals of switch respectively, when needs motor rotates forward, operator inputs action command by input unit to control system C, namely operator presses the button K switch and makes it be in out position, mutually connected between two pins of the 6th couple of pin Z6 of single-chip microcomputer Z, single-chip microcomputer Z is judged to be action command accordingly, single-chip microcomputer Z controls pair of pins Z1, second couple of pin Z2, 3rd couple of pin Z3, 4th couple of pin Z4, 5th couple of pin Z5, make the first electronic switch D1, 4th electronic switch D4, 5th electronic switch D5 is in out position, and the second electronic switch D2, 3rd electronic switch D3 is in off-position, motor is connected three phase mains and is rotated forward, when needs stop motor fast, operator's button press K switch makes it be in off-position, mutually disconnected between two pins of the 6th couple of pin Z6 of single-chip microcomputer Z, single-chip microcomputer Z is judged to cease and desist order accordingly, single-chip microcomputer Z first controls whole electronic switch and is in off-position, power supply is no longer for rotating forward of motor provides energy, then single-chip microcomputer Z controls the second electronic switch D2, 3rd electronic switch D3, 5th electronic switch D5 is in out position, and the first electronic switch D1, 4th electronic switch D4 is in off-position, three phase mains connected by motor, but the phase place of three phase mains changes, after this state maintains 106 milliseconds, the original inertia rotated forward of motor is suppressed, and then, single-chip microcomputer Z controls the first electronic switch D1, second electronic switch D2, 3rd electronic switch D3, 4th electronic switch D4, 5th electronic switch D5 is in off-position, motor just stops at once.
Although the present invention is described by reference to preferred embodiment, those skilled in the art should understand, and in the scope of claims, can do the various changes in form and details.
Claims (5)
1. the threephase switch of an energy delays time to control, comprise box body (1), three ends of incoming cables and three leading-out terminals are provided with in described box body (1), three ends of incoming cables are followed successively by the first end of incoming cables (A1), second end of incoming cables (A2), 3rd end of incoming cables (A3), three leading-out terminals are followed successively by the first leading-out terminal (B1), second leading-out terminal (B2), 3rd leading-out terminal (B3), it is characterized in that: also comprise the first electronic switch (D1), second electronic switch (D2), 3rd electronic switch (D3), 4th electronic switch (D4), 5th electronic switch (D5), control system (C), input unit, described first electronic switch (D1) is arranged on described first end of incoming cables (A1) on the conductor wire of described first leading-out terminal (B1), described second electronic switch (D2) is arranged on described first end of incoming cables (A1) on the conductor wire of described second leading-out terminal (B2), described 3rd electronic switch (D3) is arranged on described second end of incoming cables (A2) on the conductor wire of described first leading-out terminal (B1), described 4th electronic switch (D4) is arranged on described second end of incoming cables (A2) on the conductor wire of described second leading-out terminal (B2), described 5th electronic switch (D5) is arranged on described 3rd end of incoming cables (A3) on the conductor wire of described 3rd leading-out terminal (B3), described input unit is in order to run to described control system (C) input, to stop two kinds of orders, described control system (C) controls the first electronic switch (D1) according to the input command of described input unit, second electronic switch (D2), 3rd electronic switch (D3), 4th electronic switch (D4), 5th electronic switch (D5), be specially: when described control system (C) receives action command, described control system (C) controls the first electronic switch (D1), 4th electronic switch (D4), 5th electronic switch (D5) is in out position, and the second electronic switch (D2), 3rd electronic switch (D3) is in off-position, when described control system (C) receive cease and desist order time, described control system (C) first controls whole electronic switch and is in off-position, then described control system (C) controls the second electronic switch (D2), 3rd electronic switch (D3), 5th electronic switch (D5) is in out position, and the first electronic switch (D1), 4th electronic switch (D4) is in off-position, after this state maintains setting-up time, described control system (C) controls the first electronic switch (D1), second electronic switch (D2), 3rd electronic switch (D3), 4th electronic switch (D4), 5th electronic switch (D5) is in off-position.
2. the threephase switch of a kind of energy delays time to control according to claim 1, it is characterized in that: described input unit comprises a pedestal (R1), described pedestal (R1) is provided with an aperture (R2), the opening part of described aperture (R2) is stamped a light-passing board (R3), described aperture (R2) bottom is provided with a light-inductive device (R4), when described light-passing board (R3) is subject to finger presses, the stop pointed, described light-inductive device (R4) can not receive light, and input an induced signal to described control system (C) thus, described control system (C) is judged to be action command the induced signal of the odd-times received, described control system (C) is judged to the induced signal of the even-times received to cease and desist order.
3. the threephase switch of a kind of energy delays time to control according to claim 1, it is characterized in that: described input unit is a push-button switch (K), described push-button switch (K) is connected with described control system (C), described push-button switch (K) is in out an interval scale and inputs action command to described control system (C), and described push-button switch (K) is in off-position interval scale and ceases and desist order to described control system (C) input.
4. the threephase switch of a kind of energy delays time to control according to claim 1, is characterized in that: described setting-up time is 90 milliseconds.
5. the threephase switch of a kind of energy delays time to control according to claim 1, is characterized in that: described setting-up time is 106 milliseconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410682269.2A CN104467552B (en) | 2014-11-13 | 2014-11-13 | A kind of threephase switch of energy delays time to control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410682269.2A CN104467552B (en) | 2014-11-13 | 2014-11-13 | A kind of threephase switch of energy delays time to control |
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| CN104467552A true CN104467552A (en) | 2015-03-25 |
| CN104467552B CN104467552B (en) | 2017-10-27 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022598A (en) * | 1975-10-28 | 1977-05-10 | Carrier Corporation | Protection system for electric motor |
| CN87210260U (en) * | 1987-07-23 | 1988-06-08 | 陈勋 | Three phase noncontact electronic switch for direct and reverse operation |
| CN2039084U (en) * | 1988-11-11 | 1989-06-07 | 王德明 | One-way start controlling box of a three-phase ac motor |
| CN2862501Y (en) * | 2005-12-12 | 2007-01-24 | 谭启仁 | SCM controlled three-phase contactless switch |
| CN102545776A (en) * | 2012-02-21 | 2012-07-04 | 天津天安起重电器有限公司 | Variable frequency control circuit and control method for electric hoist |
-
2014
- 2014-11-13 CN CN201410682269.2A patent/CN104467552B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022598A (en) * | 1975-10-28 | 1977-05-10 | Carrier Corporation | Protection system for electric motor |
| CN87210260U (en) * | 1987-07-23 | 1988-06-08 | 陈勋 | Three phase noncontact electronic switch for direct and reverse operation |
| CN2039084U (en) * | 1988-11-11 | 1989-06-07 | 王德明 | One-way start controlling box of a three-phase ac motor |
| CN2862501Y (en) * | 2005-12-12 | 2007-01-24 | 谭启仁 | SCM controlled three-phase contactless switch |
| CN102545776A (en) * | 2012-02-21 | 2012-07-04 | 天津天安起重电器有限公司 | Variable frequency control circuit and control method for electric hoist |
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| CN104467552B (en) | 2017-10-27 |
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