CN2588656Y - Integral star-delta starting contactor - Google Patents
Integral star-delta starting contactor Download PDFInfo
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- CN2588656Y CN2588656Y CN02284782U CN02284782U CN2588656Y CN 2588656 Y CN2588656 Y CN 2588656Y CN 02284782 U CN02284782 U CN 02284782U CN 02284782 U CN02284782 U CN 02284782U CN 2588656 Y CN2588656 Y CN 2588656Y
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- 230000008878 coupling Effects 0.000 claims description 18
- 238000010168 coupling process Methods 0.000 claims description 18
- 238000005859 coupling reaction Methods 0.000 claims description 18
- 230000002457 bidirectional effect Effects 0.000 claims description 17
- 230000005622 photoelectricity Effects 0.000 claims description 17
- 102100026008 Breakpoint cluster region protein Human genes 0.000 claims description 8
- 101000933320 Homo sapiens Breakpoint cluster region protein Proteins 0.000 claims description 8
- 230000003111 delayed effect Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 abstract 9
- 230000001105 regulatory effect Effects 0.000 abstract 3
- 238000000034 method Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000005284 basis set Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- 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
- H02P1/32—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 by star/delta switching
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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Abstract
The utility model relates to an integral star-delta starting contactor, which is characterized in that the integral star-delta starting contactor comprises an integral casing, and a time-delay adjusting knob and a plurality of indicating lamps are arranged on the panel of the casing; a main contactor, a star-delta switching contactor and a control component which controls the two contactors to work are arranged in the casing; a plurality of main contacts of the main contactor are respectively connected with main contacts of the star-delta switching contactor; coils of the main contactor and the star-delta switching contactor are respectively connected with the output end of the control component which comprises a rectifying voltage regulating circuit, a star-delta switching time-delay controlling circuit, a closed-open-closed controlling circuit of the main contactor, a coil electricity controlling circuit of the main contactor, and a coil electricity controlling circuit of the star-delta switching contactor; a regulated power supply output by the rectifying voltage regulating circuit can be supplied for the working of each of the circuits, and the output end of the star-delta switching time-delay controlling circuit is respectively connected with the input ends of the closed-open-closed controlling circuit of the main contactor and the coil electricity controlling circuit of the star-delta switching contactor; the output end of the closed-open-closed controlling circuit of the main contactor is connected with the input end of the coil electricity controlling circuit of the main contactor. The utility model has the advantages of simple integral structure and wiring, convenient maintenance and reliable operation.
Description
Technical field
The utility model relates to a kind of integral type star one triangle start contactor that is used to start AC asynchronous motor.
Background technology
AC asynchronous motor is most widely used motor, because the electric current of asynchronous motor when starting is quite big, the 6-10 that can reach its rated current doubly, so asynchronous motor bigger to capacity, generally do not allow direct startup, and the way that adopts reduced-voltage starting or electronic type to start, to reduce of the impact of its starting current to electrical network.The best results of its soft start, but the expense costliness of investment.
General reduced-voltage starting method has multiple, and its culminant star one triangle start mode is because more convenient economical again, therefore also more commonly used.See also shown in Figure 1ly, existingly a kind ofly change star-connection delta tentaculum starting motor control circuit automatically with the time relay, when pressing the button QA, contactor YC, QC adhesive, at this moment motor is the Y operation; When the process certain time-delay, after motor starting finishes (time relay generally was controlled at 30 seconds), time relay normally-closed contact disconnects, and the YC dead electricity is discharged, and has connected the power supply of SC coil simultaneously again owing to the release of YC, the SC adhesive, and motor changes △ into and moves.But because the components and parts that this method adopts are more, the workload of wiring is big, and the volume of whole device is also not little, so its shortcoming also is conspicuous.
Summary of the invention
The purpose of this utility model is to start the shortcoming that moment produces big electric current in order to overcome AC asynchronous motor in the prior art, and a kind of dependable performance, the distribution that provide are simple, easy to maintenance, the integral type star one triangle start contactor of long service life and no current state star one triangle automatic switchover down.
The purpose of this utility model is achieved in that a kind of integral type star one triangle start contactor, is characterized in: comprise a single-piece frame, the single-piece frame panel is provided with time-delay and adjusts knob, a plurality of indicator light; The control assembly that is provided with main contactor, star one triangle switching contactor in the single-piece frame and controls this two contactors work;
Described main contactor comprises a plurality of main contactss, a plurality of auxiliary contact, coil; Its a plurality of auxiliary contact are often opened; Its coil two ends are connected with the output of control assembly;
Described star one connection delta tentaculum comprises a plurality of main contactss, a plurality of auxiliary contact, coil; In its a plurality of auxiliary contact one group normally closed; Each main contacts of this star one triangle switching contactor is connected with each main contacts of main contactor respectively; Its coil two ends are connected with the output of control assembly;
Described control assembly comprises that regulator rectifier circuit, star one triangle handoff delay control circuit, main contactor close a deciliter control circuit, the main contactor coil is subjected to electric control circuit, star one triangle switching contactor coil to be subjected to electric control circuit; The direct voltage that regulator rectifier circuit produces provides each circuit work power in the control assembly; The output of star one triangle handoff delay control circuit is connected by the input of electric control circuit respectively with input, the star one triangle switching contactor coil that main contactor closes deciliter control circuit; The output that main contactor closes deciliter control circuit is connected by the input of electric control circuit with the main contactor coil.
Above-mentioned integral type star one triangle start contactor, wherein, described star one triangle handoff delay control circuit comprises: a time-delay control assembly and a running status indicating circuit; Described time-delay control assembly is is mainly connected and composed by time-base integrated circuit IC1, adjustable potentiometer WR1, capacitor C 3; Described running status indicating circuit is is mainly connected and composed by time-base integrated circuit IC1, light-emitting diode GD1.
Above-mentioned integral type star one triangle start contactor, wherein, described main contactor closes a deciliter control circuit, mainly comprises: triode T2, time-base integrated circuit IC2 and auxiliary resistance, electric capacity are formed; The base stage of triode T2 connects the time delayed signal output of star one triangle handoff delay control circuit, and the collector electrode of triode T2 is connected with the input of time-base integrated circuit IC2.
Above-mentioned integral type star one triangle start contactor, wherein, described main contactor coil is subjected to electric control circuit, mainly comprises: triode T3, photoelectricity coupling GB2, bidirectional triode thyristor BCR2; Triode T3 constitutes emitter follower, and triode T3 base stage is connected with the output that main contactor closes deciliter control circuit; Triode T3 collector electrode is connected with the control end of bidirectional triode thyristor BCR2 through photoelectricity coupling GB2; Coil one end of main contactor is connected with the negative electrode of photoelectricity coupling GB2, bidirectional triode thyristor BCR2, and its other end is connected with the input of civil power.
Above-mentioned integral type star one triangle start contactor, wherein, described star one triangle switching contactor coil is subjected to electric control circuit, comprises that photoelectronic coupler GB1, bidirectional triode thyristor BCR1 photoelectronic coupler GB1 are connected with the output of star one triangle handoff delay control circuit; Coil one end of star one triangle switching contactor is connected with the control end of bidirectional triode thyristor BCR1 behind photoelectricity coupling GB1, and the other end is connected with the input of civil power.
Above-mentioned integral type star one triangle start contactor, wherein, described regulator rectifier circuit output 12V direct voltage.
The utility model compared with prior art, has tangible advantage and effect owing to realize above-mentioned technical scheme:
1, the utility model is because with main contactor and a plurality ofly be subjected to electric auxiliary contact, star one triangle switching contactor and a plurality of star one triangle switch auxiliary contact, knob is adjusted in the control assembly plate of star one triangle switching contactor, time-delay, a plurality of indicator light all is arranged in the single-piece frame and is connected, structurally it is real integral type, adjusting, easy to use.
2, the utility model is owing to have all in star operating state and triangle operating state that independently auxiliary contact can be for output; Widely applicable.
3, the utility model, is provided convenience for the operator monitors owing to the LED that is provided with two kinds of operating states is indicated respectively.
4, the utility model can improve the life-span of contact owing to realized that star one triangle under the no current state switches greatly.
5, the utility model is because whole star one triangle handoff procedure is finished dependable performance automatically by predefined requirement.
6, the utility model is owing to be overall structure, so its volume is little, distribution is simple, and is easy to maintenance, and reliable operation has high cost performance.
Description of drawings
Concrete structure of the present utility model is further provided by following embodiment and accompanying drawing thereof.
Fig. 1 existingly changes star-connection delta tentaculum starting motor control circuit figure automatically with the time relay.
Fig. 2 is the contour structures schematic diagram of the utility model integral type star one triangle start contactor.
Fig. 3 is the electrical schematic diagram of the utility model integral type star one triangle start contactor.
Fig. 4 is the control principle block diagram of the utility model integral type star one triangle start contactor.
Fig. 5 is the control assembly schematic diagram of the utility model integral type star one triangle start contactor.
Embodiment
See also Fig. 2, Fig. 3, the utility model integral type star one triangle start contactor comprises a single-piece frame 1, and the single-piece frame panel is provided with time-delay and adjusts knob 5, a plurality of indicator light 6; The control assembly 4 that is provided with main contactor 2, star one triangle switching contactor 3 in the single-piece frame 1 and controls this two contactors work;
Star one connection delta tentaculum 3 comprises main contacts Z, X, Y, auxiliary contact b1, b2, b3, b4, c1, c2, coil L2; Its two groups of auxiliary contact b1, b2, b3, b4 often open, and one group of contact c1, c2 are normally closed; Its coil two ends D1, D2 are connected with the output of control assembly.
Please cooperate referring to Fig. 4, the control assembly 4 of star one connection delta tentaculum by regulator rectifier circuit 41, star one triangle handoff delay control circuit 42, main contactor close deciliter control circuit 43, the main contactor coil is subjected to electric control circuit 44, star one triangle switching contactor coil connected to form by electric control circuit 45; The input of regulator rectifier circuit 41 is connected with alternating current 200V or 380V, through rectifying and voltage-stabilizing, produce direct voltage by output close deciliter control circuit 43 with star one triangle handoff delay control circuit 42, main contactor respectively, the main contactor coil is subjected to electric control circuit 44, star one triangle switching contactor coil be connected by the power end of electric control circuit 45; A plurality of outputs of star one triangle handoff delay control circuit 42 are connected by the input of electric control circuit 45 respectively with input, the star one triangle switching contactor coil that main contactor closes deciliter control circuit 43; The output that main contactor closes deciliter control circuit 43 is connected by the input of electric control circuit 44 with the main contactor coil.
After the energising of integral type star one triangle start contactor, main contactor 2 is just adhesive after being subjected to electricity, and it is motionless that this clock star one triangle switches tentaculum 3, makes motor be in star (Y) shape operating state.
After adjusting the delay time of setting the delay time knob, the control assembly of integral type star one triangle start contactor sends instruction;
1, makes main contactor 2 dead electricity in short-term earlier, to cut off the power supply of major loop;
2, behind the 100ms, star one triangle switching contactor 3 main contacts are implemented star one triangle and are switched under no current state, make motor be in triangle work wiring state;
3, make main contactor 2 be subjected to electric adhesive again after 200ms, motor is just capable at triangle work wiring state.So far, motor star one triangle start process is just all finished.
Please cooperate referring to Fig. 5, in the control assembly plate 4 of star one connection delta tentaculum by regulator rectifier circuit 41, star one triangle handoff delay control circuit 42, main contactor close deciliter control circuit 43, the main contactor coil is subjected to electric control circuit 44, star one triangle switching contactor coil connected to form by electric control circuit 45; Regulator rectifier circuit 41 comprises: rectification integrated circuit QZ1, integrated regulator 7812, resistance R 12, capacitor C 0, C1, C2, C11; Alternating current input L1, L2 two ends connect resistance R O; Rectification integrated circuit QZ1 port 2 and capacitor C 11, resistance R 12 and connect end and be connected; Another of capacitor C 11, resistance R 12 and connect the end be connected with the input of civil power; Rectification integrated circuit port 3 is connected with integrated regulator 7812 port ones; The port 4 of rectification integrated circuit QZ1 is connected with the mains electricity input end; The port 2 of integrated regulator 7812,3 liang of positive and negative terminal output dc voltages of port are connected with the power supply positive and negative terminal of each control assembly; The positive and negative end of filter capacitor C1 is connected with port one, the power supply negative terminal of integrated regulator 7812 respectively; The positive and negative end of filter capacitor C2 is connected with port 2, the power supply negative terminal of integrated regulator 7812 respectively.
Star one triangle handoff delay control circuit 42 comprises: time-base integrated circuit IC1 (model 555-2), light-emitting diode GD1, GD2, adjustable potentiometer WR1, resistance R 1, R2, R3, R8, R11, capacitor C 3, C4, C5, C10; The port 2 of time-base integrated circuit IC1 (model 555-2), port 6 link to each other and are connected with an end of adjustable potentiometer WR1, capacitor C 3 respectively, constitute the time-delay control assembly; The port 4 of time-base integrated circuit 555-2 also connects an end of capacitor C 4, resistance R 1; The port 5 of time-base integrated circuit IC1 (model 555-2) is connected with an end of capacitor C 5, the anode of the port 3 of time-base integrated circuit IC1 (model 555-2) and the negative terminal of light-emitting diode GD1, GD2, resistance R 8, R11 one end and contact be connected; Resistance R 2 two ends are connected with anode, the power positive end of light-emitting diodes light pipe GD1 respectively; Resistance R 3 two ends respectively with the light-emitting diode negative terminal, be connected; Capacitor C 10 two ends are connected with R11, power supply negative terminal respectively.
Main contactor closes deciliter control circuit 43 and comprises: triode T2, time-base integrated circuit IC2 (model 555-1), resistance R 4～R7, R9, capacitor C 6, C7～C9; The base stage of triode T2 connects resistance R 8 other ends, the grounded emitter of triode T2, and the collector plate of triode T2 connects capacitor C 8 one ends; The port 2 of time-base integrated circuit IC2 (model 555-1) connects R5, the C8 other end; Advance the end that basic circuit 555-1 port 3 connects resistance R 9; That the port 4 of time-base integrated circuit IC2 (model 555-1) connects capacitor C 6 and resistance R 4 and connect end; Be connected in series capacitor C 7 between the port 5 of time-base integrated circuit IC2 (model 555-1) and the power supply negative terminal; The port 6 of time-base integrated circuit IC2 (model 555-1), port 7 link to each other and are connected with an end of resistance R 6, capacitor C 9, and resistance R 6, capacitor C 9 other ends connect the power supply positive and negative terminal respectively and connect; Resistance R 7 two ends connect capacitor C 8 one ends and power positive end respectively.
The main contactor coil is subjected to electric control circuit 44, comprises triode T3, photoelectricity coupling GB2, bidirectional triode thyristor BCR2, resistance R 10; Triode T3 base stage is connected with resistance R 9 other ends, and triode T3 collector electrode is connected with the port one of resistance R 10, photoelectricity coupling GB2, and triode T3 emitter is connected with power supply negative terminal; The port 2 of photoelectricity coupling is connected with power supply negative terminal, and its port 4, port 6 are connected with C end, the T2 end of bidirectional triode thyristor BCR2 respectively; Coil one end of main contactor is connected with the T2 end of the port 6 of photoelectricity coupling GB2, bidirectional triode thyristor BCR2, its other end is connected with the input of civil power.
Star one triangle switching contactor coil is subjected to electric control circuit 45, comprises photoelectricity coupling GB1, bidirectional triode thyristor BCR1; The port 4 of photoelectricity coupling, port 6 are connected with the T2 end with the C end of bidirectional triode thyristor BCR1 respectively; The port one of photoelectricity coupling GB1, port 2 are connected with an end, the power supply negative terminal of capacitor C 10 respectively; Coil one end of star one triangle switching contactor is connected with the T2 end of photoelectricity coupling GB1 port 6, bidirectional triode thyristor BCR1, and the other end is connected with the input of civil power.
When using, integral type star one triangle start contactor with exchange 200V (380V) power connection after, by C11, R12 step-down, pass through the QZ1 rectification and become direct current, again through 7812 voltage stabilizings, the working power of output+12V is connected with the power supply of each control assembly.
With time-base integrated circuit IC1 is core, is equipped with Resistor-Capacitor Units such as C3, ER1, constitutes the time-delay control assembly, and time-delay length is decided by the value of capacitor C 3, adjustable potentiometer WR1.After the time-base integrated circuit IC1 energising, the output of its port 3 is " 0 " earlier, this moment, light-emitting diode GD2 was dark, light-emitting diode GD1 is bright, along with the charging of C3, the current potential of the port 2 of time-base integrated circuit IC1 is descended, when the current potential of this point is lower than 4V, port 3 outputs of time-base integrated circuit IC1 become " 1 " by " 0 ", and this moment, GD2 was bright, and GDI is dark.
Simultaneously: the light-emitting diode in the photoelectricity coupling GB1 makes bidirectional triode thyristor BCR1 conducting by R11 (through the C10 time-delay) conducting, makes the action of star one triangle switching contactor; Triode T2 also becomes " leading to " by " breaking ", obtain a following jump pulse at capacitor C 8 places, this makes time-base integrated circuit 555-1 is that port 3 outputs of the monostable circuit that constitutes of core become " 1 " by " 0 ", make triode T3 also become " leading to " by " breaking ", make the temporary transient dead electricity of photoelectric coupling GB2, bidirectional triode thyristor BCR2 also becomes " breaking " by original " leading to ", and the just temporary transient dead electricity of main contactor disconnects;
Becoming IC circuit 2 with basis set is the time-delay length of the monostable circuit of core, fixed by the value of R6 and C9.When the charge value of C9 reaches 8V when above, basis set becomes the output of IC circuit 2 to resume work again.Whole star one triangle start process has just been finished.
The utility model modern design, owing to be overall structure, volume is little, distribution is simple, easy to maintenance, reliable operation, has high cost performance.
Claims (6)
1, a kind of integral type star one triangle start contactor is characterized in that: comprise a single-piece frame, the single-piece frame panel is provided with time-delay and adjusts knob, a plurality of indicator light; The control assembly that is provided with main contactor, star one triangle switching contactor in the single-piece frame and controls this two contactors work;
Described main contactor comprises a plurality of main contactss, a plurality of auxiliary contact, coil; Its a plurality of auxiliary contact are often opened; Its coil two ends are connected with the output of control assembly;
Described star one connection delta tentaculum comprises a plurality of main contactss, a plurality of auxiliary contact, coil; In its a plurality of auxiliary contact one group normally closed; Each main contacts of this star one triangle switching contactor is connected with each main contacts of main contactor respectively; Its coil two ends are connected with the output of control assembly;
Described control assembly comprises that regulator rectifier circuit, star one triangle handoff delay control circuit, main contactor close a deciliter control circuit, the main contactor coil is subjected to electric control circuit, star one triangle switching contactor coil to be subjected to electric control circuit; The direct voltage that regulator rectifier circuit produces provides each circuit work power in the control assembly; The output of star one triangle handoff delay control circuit is connected by the input of electric control circuit respectively with input, the star one triangle switching contactor coil that main contactor closes deciliter control circuit; The output that main contactor closes deciliter control circuit is connected by the input of electric control circuit with the main contactor coil.
2, integral type star one triangle start contactor according to claim 1 is characterized in that: described star one triangle handoff delay control circuit comprises: a time-delay control assembly and a running status indicating circuit; Described time-delay control assembly is is mainly connected and composed by time-base integrated circuit IC1, adjustable potentiometer WR1, capacitor C 3; Described running status indicating circuit is is mainly connected and composed by time-base integrated circuit IC1, light-emitting diode GD1.
3, integral type star one triangle start contactor according to claim 1, it is characterized in that: described main contactor closes a deciliter control circuit, mainly comprises: triode T2, time-base integrated circuit IC2 and auxiliary resistance, electric capacity are formed; The base stage of triode T2 connects the time delayed signal output of star one triangle handoff delay control circuit, and the collector electrode of triode T2 is connected with the input of time-base integrated circuit IC2.
4, integral type star one triangle start contactor according to claim 1 is characterized in that: described main contactor coil is subjected to electric control circuit, mainly comprises: triode T3, photoelectricity coupling GB2, bidirectional triode thyristor BCR2; Triode T3 constitutes emitter follower, and triode T3 base stage is connected with the output that main contactor closes deciliter control circuit; Triode T3 collector electrode is connected with the control end of two-way controlled BCR2 through photoelectricity coupling GB2; Coil one end of main contactor is connected with the negative electrode of photoelectricity coupling GB2, bidirectional triode thyristor BCR2, and its other end is connected with the input of civil power.
5, integral type star one triangle start contactor according to claim 1, it is characterized in that: described star one triangle switching contactor coil is subjected to electric control circuit, comprises that photoelectronic coupler GB1, bidirectional triode thyristor BCR1 photoelectronic coupler GB1 are connected with the output of star one triangle handoff delay control circuit; Coil one end of star one triangle switching contactor is connected with the control end of bidirectional triode thyristor BCR1 behind photoelectricity coupling GB1, and the other end is connected with the input of civil power.
6, integral type star one triangle start contactor according to claim 1 is characterized in that: described regulator rectifier circuit output 12V direct voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02284782U CN2588656Y (en) | 2002-11-19 | 2002-11-19 | Integral star-delta starting contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02284782U CN2588656Y (en) | 2002-11-19 | 2002-11-19 | Integral star-delta starting contactor |
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| CN2588656Y true CN2588656Y (en) | 2003-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN02284782U Expired - Fee Related CN2588656Y (en) | 2002-11-19 | 2002-11-19 | Integral star-delta starting contactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2421143A3 (en) * | 2010-07-15 | 2012-11-28 | Josef Britschgi | Methods for switching on an AC motor and star delta motor protection switch with automatic switching from star to delta |
-
2002
- 2002-11-19 CN CN02284782U patent/CN2588656Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2421143A3 (en) * | 2010-07-15 | 2012-11-28 | Josef Britschgi | Methods for switching on an AC motor and star delta motor protection switch with automatic switching from star to delta |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |