CN205335818U - Protector power isolation contactless relay - Google Patents
Protector power isolation contactless relay Download PDFInfo
- Publication number
- CN205335818U CN205335818U CN201520789996.9U CN201520789996U CN205335818U CN 205335818 U CN205335818 U CN 205335818U CN 201520789996 U CN201520789996 U CN 201520789996U CN 205335818 U CN205335818 U CN 205335818U
- Authority
- CN
- China
- Prior art keywords
- power supply
- diode
- connects
- resistance
- optical coupling
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses protector power isolation contactless relay adopts high countervoltage triode or compound triode and bridge rectifier to constitute alternating current switch, high countervoltage triode or the emitter control of compound triode base by optical coupling isolator, optical coupling isolator's collector supply can be provided by triode collector, also can provide by switching power supply secondary winding or solitary isolation power, control signal makes the contactor of protector power isolation contactless relay conduction control forceful electric power circuit through optical coupling isolation drive triode, design the overall arrangement of planning circuit board and can lump the protector power isolation contactless relay circuit together with motor protector, can reduce circuit face sum of products volume. Have contactless, small, safe and reliable, the fields such as motor protection and electrical automation control of being applied to that can be extensive.
Description
Technical field:
This utility model relates to pump class protector, motor protector, Intelligent Asynohornized Protector field, particularly protector isolated from power contactless relay。
Technical background:
Existing solid-state relay is also referred to as contactless relay or noncontacting switch, and because the reasons such as version, volume, price are only applicable to some low-voltage electrical apparatus control field, inapplicable motor protector controls device。Current all kinds of motor protector all adopts the Miniature direct current relay of routine, remove to control the A.C. contactor of forceful electric power with the contact of Miniature direct current relay, shortcoming is to have contact, life-span is short, volume large circuit board not easily layout, working environment is restricted, eight, the nineties once adopted controllable silicon to replace relay in the simple and easy protector of motor, because there is the equipment that multiple relay can not be replaced to control several functions, more cannot be used in all kinds of protectors of intelligent control and equipment thereof, and all forceful electric power light current circuit positions are all with high voltage, there is hidden danger, seldom adopted similar control mode in the last few years。
Summary of the invention
The purpose of this utility model is to invent a series of protector isolated from power contactless relays for drawbacks described above, adopt high countervoltage triode or compound transistor and bridge rectifier composition alternating-current switch, high countervoltage triode or compound transistor base stage are controlled by the emitter stage of optical coupling isolator, the collector supply of optical coupling isolator can be provided by transistor collector, can also be provided by independent insulating power supply, control signal drives audion to make the conducting of protector isolated from power contactless relay control the catalyst of forceful electric power circuit through optical coupling isolator, circuit of the present invention is simple, use protector regulated power supply or Switching Power Supply realizes optical coupling isolator and mains transformer isolation dual resisteance, guarantee the control that motor protector is safe and reliable, and design planning circuit-board laying-out of protector isolated from power contactless relay circuit and motor protector can being lumped together, board area and volume can be reduced。
The technical solution of the utility model is a kind of protector isolated from power contactless relay, it is characterized in that protector isolated from power contactless relay 1DJ adopts high countervoltage triode or compound transistor and bridge rectifier composition non-contact alternating-current switch circuit, high countervoltage triode or compound transistor base stage are controlled by the emitter stage of optical coupling isolator, the collector supply of optical coupling isolator is provided by independent insulating power supply, realize insulating power supply and the double, two isolation of optical coupling isolator, by mutually isolated for the protection control circuit of non-contact alternating-current switch circuit Yu low-voltage, control signal drives audion through optical coupling isolator, non-contact alternating-current switch circuit turn-on and protector isolated from power contactless relay 1DJ conducting remove to control the catalyst of forceful electric power circuit, its circuit structure is the light emitting diode positive pole of optical coupling isolator 1Q and negative pole is control signal 1S, the base stage of the emitter stage connecting triode 1GB of optical coupling isolator 1Q and resistance 1R2, the emitter stage of the other end connecting triode 1BG of resistance 1R2, the positive pole of diode 1D3, the positive pole of diode 1D4 and the negative pole of insulating power supply 1VD, the colelctor electrode of optical coupling isolator 1Q connects resistance 1R1, the other end of resistance 1R1 removes to connect the positive pole of insulating power supply 1VD, the colelctor electrode of audion 1BG connects the negative pole of diode 1D1 and the negative pole of diode 1D2, the negative pole of the cathode connecting diode 1D3 of diode 1D1 goes to connect alternating current power supply 1a as outfan, the negative pole of the cathode connecting diode 1D4 of diode 1D2 goes to connect ac contactor coil 1KM as outfan, the other end of ac contactor coil 1KM connects alternating current power supply 1c, when the control signal 1S end of protector isolated from power contactless relay 1DJ has control signal, A.C. contactor 1KM adhesive reaches the purpose controlled。
A kind of protector isolated from power contactless relay, it is characterized in that in protector isolated from power contactless relay 2DJ, the colelctor electrode of optical coupling isolator can without insulating power supply, through resistance connecting triode colelctor electrode self-powered, when the colelctor electrode of optical coupling isolator is with emitter stage conducting, conducting also followed by audion, its circuit structure is the light emitting diode positive pole of optical coupling isolator 2Q and negative pole is control signal 2S, the base stage of the emitter stage connecting triode 2GB of optical coupling isolator 2Q and resistance 2R2, the emitter stage of the other end connecting triode 2BG of resistance 2R2, the positive pole of diode 2D3 and the positive pole of diode 2D4, the colelctor electrode of optical coupling isolator 2Q connects resistance 2R1, the colelctor electrode of the other end connecting triode 2BG of resistance 2R1, the negative pole of diode 2D1 and the negative pole of diode 2D2, the negative pole of the cathode connecting diode 2D3 of diode 2D1 goes to connect alternating current power supply 2a as outfan, the negative pole of the cathode connecting diode 2D4 of diode 2D2 goes to connect ac contactor coil 2KM as outfan, the other end of ac contactor coil 2KM connects alternating current power supply 2c, when the control signal 2S end of protector isolated from power contactless relay 2DJ has control signal, A.C. contactor adhesive reaches the purpose controlled。
A kind of protector isolated from power contactless relay, it is characterized in that protector isolated from power contactless relay 3DJ adopts and can turn off bidirectional triode thyristor composition electronic AC switch, relay is replaced to go to control A.C. contactor with bidirectional triode thyristor can be turned off, its circuit structure is the light emitting diode positive pole of optical coupling isolator 3Q and negative pole is control signal 3S, the emitter stage of optical coupling isolator 3Q connects resistance 3R2 and resistance 3R3, the other end of resistance 3R3 connects can turn off bidirectional triode thyristor 3CQ control pole, the other end connection insulating power supply 3VD negative pole of resistance 3R2 goes to connect ac contactor coil 3KM one end as outfan with turning off bidirectional triode thyristor 3CQ lower end, the colelctor electrode of optical coupling isolator 3Q connects resistance 3R1, the other end of resistance 3R1 removes to connect the positive pole of insulating power supply 3VD, bidirectional triode thyristor 3CQ upper end can be turned off go to connect alternating current power supply 3a as outfan, the other end line alternating current power supply 3c of ac contactor coil 3KM, when the control signal 3S end of protector isolated from power contactless relay 3DJ has control signal, bidirectional triode thyristor 3CQ conducting can be turned off go to control ac contactor coil 3KM, A.C. contactor adhesive reaches the purpose controlled。
A kind of protector isolated from power contactless relay, it is characterized in that isolated from power contactless relay and the combination of analog protection circuit device, it is made up of together with analog circuit motor protector or pump class protector protector isolated from power contactless relay 4DJ, the circuit of power voltage step down capacitor concatenates an insulating power supply transformator, the output of insulating power supply transformer secondary winding provides insulating power supply through regulated power supply to the colelctor electrode of optical coupling isolator in isolated from power contactless relay, realize optical coupling isolator and mains transformer isolation dual resisteance, the current signal of current transformer amplifies combiner circuit through three-phase current, circuit or current foldback circuit or break phase and three-phase imbalance protection circuit output protection control signal when keeping away then through starting, protector isolated from power contactless relay 4DJ action is made to reach the control to A.C. contactor, wherein start circuit when keeping away and be served only for pump class protector, its circuit structure is A phase power supply 4a, B phase power supply 4b and C phase power supply 4c connects A.C. contactor 4KM, A phase power supply 4a1 connects winding 4TL1 of insulating power supply transformator and connects motor 4M through A phase current mutual inductor 4LA, B phase power supply 4b1 connects motor 4M through B phase current mutual inductor 4LB, C phase power supply 4c1 connects power voltage step down capacitor 4CD and connects motor 4M through C phase current mutual inductor 4LC, the other end of power voltage step down capacitor 4CD connects the input of regulated power supply 4WD1, the other end of winding 4TL1 of insulating power supply transformator connects another input of regulated power supply 4WD1, insulating power supply transformer secondary winding connects insulating power supply 4WD2, insulating power supply positive pole 4VD2 connects resistance 4R4, the other end of resistance 4R4 connects the colelctor electrode of optical coupling isolator 4Q, the emitter stage of optical coupling isolator 4Q connects the base stage of resistance 4R5 and audion 4BG, insulating power supply negative pole 4VD2 connects the other end of resistance 4R5, the emitter stage of audion 4BG, the positive pole of diode 4D3 and diode 4D4 positive pole, the colelctor electrode of audion 4BG connects the negative pole of diode 4D1 and the negative pole of diode 4D3, the negative pole of the cathode connecting diode 4D3 of diode 4D1 goes to connect as electrical isolation contactless relay 4DJ outfan and starts by 4QM and stop button 4TM, the negative pole of the cathode connecting diode 4D4 of diode 4D2 goes connection to start the other end by 4QM and A.C. contactor 4KM coil as another outfan of protector isolated from power contactless relay 4DJ, the other end of A.C. contactor 4KM coil connects alternating current power supply 4a, the other end of stop button 4TM connects alternating current power supply 4c, the coil two ends of current transformer 4LA, the coil two ends of the coil two ends summation current transformer 4LC of current transformer 4LB connect three-phase current respectively and amplify combiner circuit 4Q1, three-phase current amplifies the output of combiner circuit 4Q1 and connects circuit 4BS when starting keeps away respectively, current foldback circuit 4GZ and disconnected phase and three-phase imbalance protect circuit 4PH, start the output of circuit 4BS when keeping away and connect the positive pole of diode 4D5, the output of current foldback circuit 4GZ connects the negative pole of diode 4D6, the output of disconnected phase and three-phase imbalance protection circuit 4PH connects the negative pole of diode 4D7, the positive pole of diode 4D6 and the positive pole of diode 4D7 connect resistance 4R3, the other end of resistance 4R3 connects the negative pole of diode 4D5 and the negative pole of diode 4D8, the positive pole of diode 4D8 connects the light emitting diode positive pole of resistance 4R1 and optical coupling isolator 4Q2, the other end of resistance 4R1 connects positive supply 4VD1, the negative pole of the light emitting diode of optical coupling isolator 4Q2 connects resistance 4R2, the other end of resistance 4R2 connects power supply common port 4VE1。
A kind of protector isolated from power contactless relay, it is characterized in that isolated from power contactless relay and Intelligent Asynohornized Protector combination, it is made up of together with Intelligent Asynohornized Protector circuit with protector isolated from power contactless relay 5DJ2 protector isolated from power contactless relay 5DJ1, switching mode power supply transformer increases by two Secondary Winding insulating power supplies of optical coupling isolator colelctor electrode in rectifying and voltage-stabilizing is as isolated from power contactless relay, controlled isolated from power contactless relay by starting button respectively through intelligent protection circuit and open motor, the current signal of current transformer also passes through intelligent protection circuit control isolated from power contactless relay makes motor shut down when overcurrent or three-phase imbalance, its circuit structure is A phase power supply 5a, B phase power supply 5b and C phase power supply 5c connects the main contacts of A.C. contactor 5KM1 and the main contacts of A.C. contactor 5KM2, A phase power supply 5a1, B phase power supply 5b1 and C phase power supply 5c1 extends through A phase current mutual inductor 5LA, B phase current mutual inductor 5LB and C phase current mutual inductor 5LC goes to connect motor 5M again, the secondary coil of A phase current mutual inductor 5LA, the secondary coil of B phase current mutual inductor 5LB and the secondary coil of C phase current mutual inductor 5LC connect intelligent protection circuit 5Q1 respectively, forward starts presses 5QZ one end connection positive supply 5VD, forward starts presses 5QZ other end connection intelligent protection circuit 5Q1, back-to-back starting is pressed 5QF one end and is connected positive supply 5VD, back-to-back starting is pressed the 5QF other end and is connected intelligent protection circuit 5Q1, stop button 5TM one end connects positive supply 5VD, the stop button 5TM other end connects intelligent protection circuit 5Q1, the light emitting diode two ends of optical coupling isolator 5Q2 in the control signal 5S1 connection protector isolated from power contactless relay 5DJ1 of intelligent protection circuit 5Q1 output, the colelctor electrode of optical coupling isolator 5Q2 connects resistance 5R1, the other end of resistance 5R1 connects insulating power supply positive pole 5VD1, the base stage of the emitter stage connecting triode 5GB1 of optical coupling isolator 5Q2 and resistance 5R2, the emitter stage of the other end connecting triode 5BG1 of resistance 5R2, the positive pole of diode 5D3, the positive pole of diode 5D4 and insulating power supply negative pole 5VD2, the colelctor electrode of audion 5GB1 connects the negative pole of diode 5D1 and the negative pole of diode 5D3, the light emitting diode two ends of optical coupling isolator 5Q3 in the control signal 5S2 connection protector isolated from power contactless relay 5DJ2 of intelligent protection circuit 5Q1 output, the colelctor electrode of optical coupling isolator 5Q3 connects resistance 5R3, the other end of resistance 5R3 connects insulating power supply positive pole 5VD3, the base stage of the emitter stage connecting triode 5GB2 of optical coupling isolator 5Q3 and resistance 5R4, the emitter stage of the other end connecting triode 5BG2 of resistance 5R4, the positive pole of diode 5D7, the positive pole of diode 5D8 and insulating power supply negative pole 5VD4, the colelctor electrode of audion 5GB2 connects the negative pole of diode 5D5 and the negative pole of diode 5D6, the Alternating Current Power Supply end of A phase power supply 5a connecting valve power supply 5KD, the positive pole of diode 5D2 and the negative pole of diode 5D4, the positive pole of diode 5D6 and the negative pole of diode 5D8, another Alternating Current Power Supply end of C phase power supply 5c connecting valve power supply 5KD, the interlocking contact of A.C. contactor 5KM1 and the interlocking contact of A.C. contactor 5KM2, A.C. contactor 5KM1 interlocks the coil of the other end connection A.C. contactor 5KM2 of contact, A.C. contactor 5KM2 interlocks the coil of the other end connection A.C. contactor 5KM1 of contact, A.C. contactor 5KM1 coil the other end connect the negative pole of the positive pole of diode 5D1 and diode 5D3, A.C. contactor 5KM2 coil the other end connect the negative pole of the positive pole of diode 5D5 and diode 5D7, switching mode power supply transformer 5T is by winding 5TL1 of switching mode power supply transformer, switching mode power supply transformer Secondary Winding 5TL2, switching mode power supply transformer Secondary Winding 5TL3, switching mode power supply transformer Secondary Winding 5TL4 and switching mode power supply transformer Secondary Winding 5TL5 composition, switching mode power supply transformer Secondary Winding 5TL4 connects insulating power supply 5WD1, switching mode power supply transformer Secondary Winding 5TL5 connects insulating power supply 5WD2, Switching Power Supply 5KD exports positive supply 5VD, negative supply 5VC and power supply common port 4VE, forward starts presses 5QZ, back-to-back starting is pressed one end of 5QF and stop button 5TM and is connected positive supply 5VD, the other end connects intelligent protection circuit 5Q1。
This utility model protector isolated from power contactless relay adopts high countervoltage triode or compound transistor and bridge rectifier composition alternating-current switch, high countervoltage triode or compound transistor base stage are controlled by the emitter stage of optical coupling isolator, the collector supply of optical coupling isolator can be provided by transistor collector, can also be provided by Switching Power Supply Secondary Winding or independent insulating power supply, control signal drives audion to make the conducting of protector isolated from power contactless relay control the catalyst of forceful electric power circuit through light-coupled isolation, have contactless, volume is little, safe and reliable, the field such as motor protecting device and electric automatization control can be widely used in。
Accompanying drawing explanation
Fig. 1, protector isolated from power contactless relay 1DJ circuit theory diagrams
Fig. 2, protector isolated from power contactless relay 2DJ circuit theory diagrams
Fig. 3, protector isolated from power contactless relay 3DJ circuit theory diagrams
Fig. 4, isolated from power contactless relay and combination of analogue circuitry protector circuit theory schematic diagram
Fig. 5, isolated from power contactless relay and Intelligent Asynohornized Protector combinational circuit principle schematic
1DJ protector isolated from power contactless relay, 1R1-1R2 resistance, 1D1-1D4 diode, 1BG audion, 1Q optical coupling isolator, 1S control signal, 1VD insulating power supply, 1KM ac contactor coil in Fig. 1。
2DJ protector isolated from power contactless relay, 2R1-2R2 resistance, 2D1-2D4 diode, 2BG audion, 2Q optical coupling isolator, 2S control signal, 2KM ac contactor coil in Fig. 2。
In Fig. 3,3DJ protector isolated from power contactless relay, 3R1-3R3 resistance, 3CQ can turn off bidirectional triode thyristor, 3Q optical coupling isolator, 3S control signal, 3VD insulating power supply, 3KM ac contactor coil。
MBH analog circuit motor protector in Fig. 4, 4aA phase power supply, 4bB phase power supply, 4cC phase power supply, 4a1A phase power supply, 4b1B phase power supply, 4c1C phase power supply, 4M motor, 4KM A.C. contactor, 4QM starting is pressed, 4TM stop button, 4T insulating power supply transformator, winding of 4TL1 insulating power supply transformator, 4TL2 insulating power supply transformer secondary winding, 4CD power voltage step down capacitor, 4WD1-4WD2 regulated power supply, 4VD positive supply, 4VC negative supply, 4VE power supply common port, 4VD1 insulating power supply positive pole, 4VD2 insulating power supply negative pole, 4LAA phase current mutual inductor, 4LBB phase current mutual inductor, 4LCC phase current mutual inductor, 4Q1 three-phase current amplifies combiner circuit, 4BS starts circuit when keeping away, 4GZ current foldback circuit, the disconnected phase of 4PH and three-phase imbalance protection circuit, 4DJ protector isolated from power contactless relay, 4R1-4R5 resistance, 4D1-4D8 diode, 4BG audion, 4Q optical coupling isolator。
ZBH smart circuit motor protector in Fig. 5, 5aA phase power supply, 5bB phase power supply, 5cC phase power supply, 5a1A phase power supply, 5b1B phase power supply, 5c1C phase power supply, 5M motor, 5KM1 A.C. contactor, 5KM2 A.C. contactor, 5QZ forward starts to be pressed, 5QF back-to-back starting is pressed, 5TM stop button, 5KD Switching Power Supply, 5T switching mode power supply transformer, winding of 5TL1 switching mode power supply transformer, 5TL2-5TL5 switching mode power supply transformer Secondary Winding, 5WD1-5WD2 regulated power supply, 5VD positive supply, 5VC negative supply, 4VE power supply common port, 5VD1 insulating power supply positive pole, 5VD2 insulating power supply negative pole 5VD3 insulating power supply positive pole, 5VD4 insulating power supply negative pole, 5LAA phase current mutual inductor, 5LBB phase current mutual inductor, 5LCC phase current mutual inductor, 5Q1 intelligent protection circuit, 5DJ1-5DJ2 protector isolated from power contactless relay, 5R1-5R4 resistance, 5D1-5D8 diode, 5BG1-5BG2 audion, 5Q2-5Q3 optical coupling isolator, 5S1-5S2 control signal。
Detailed description of the invention
Fig. 1 is protector isolated from power contactless relay 1DJ circuit theory diagrams; circuit operation principle is control signal 1S LED operation of optical coupling isolator 1Q when having a control signal; insulating power supply 1VD powers to the colelctor electrode of optical coupling isolator 1Q; the emitter stage of the colelctor electrode of optical coupling isolator 1Q and optical coupling isolator 1Q turns on; audion 1BG saturation conduction; audion 1BG and the composition non-contact alternating-current switch conducting of diode 1D1-1D4 bridge rectifier; A.C. contactor 1KM adhesive, when control signal 1S disconnects, A.C. contactor 1KM turns off the purpose reaching to control therewith。Detailed description of the invention is that protector isolated from power contactless relay 1DJ adopts high countervoltage triode or compound transistor and bridge rectifier composition non-contact alternating-current switch circuit, high countervoltage triode or compound transistor base stage are controlled by the emitter stage of optical coupling isolator, the collector supply of optical coupling isolator is provided by independent insulating power supply, realize insulating power supply and the double, two isolation of optical coupling isolator, by mutually isolated for the protection control circuit of the rectifier control circuit with low-voltage that replace conventional relays contact, control signal drives audion through optical coupling isolator, non-contact alternating-current switch circuit turn-on and protector isolated from power contactless relay 1DJ conducting remove to control the catalyst of forceful electric power circuit, the light emitting diode positive pole of optical coupling isolator 1Q and negative pole are control signal 1S, the base stage of the emitter stage connecting triode 1GB of optical coupling isolator 1Q and resistance 1R2, the emitter stage of the other end connecting triode 1BG of resistance 1R2, the positive pole of diode 1D3, the positive pole of diode 1D4 and the negative pole of insulating power supply 1VD, the colelctor electrode of optical coupling isolator 1Q connects resistance 1R1, the other end of resistance 1R1 removes to connect the positive pole of insulating power supply 1VD, the colelctor electrode of audion 1BG connects the negative pole of diode 1D1 and the negative pole of diode 1D2, the negative pole of the cathode connecting diode 1D3 of diode 1D1 goes to connect alternating current power supply 1a as outfan, the negative pole of the cathode connecting diode 1D4 of diode 1D2 goes to connect ac contactor coil 1KM as outfan, the other end of ac contactor coil 1KM connects alternating current power supply 1c, when the control signal 1S end of protector isolated from power contactless relay 1DJ has control signal, A.C. contactor 1KM adhesive reaches the purpose controlled。
Fig. 2 is protector isolated from power contactless relay 2DJ circuit theory diagrams; circuit operation principle is control signal 2S LED operation of optical coupling isolator 2Q when having a control signal; in protector isolated from power contactless relay 2DJ, the colelctor electrode of optical coupling isolator 2Q can without insulating power supply; through resistance connecting triode 2GB colelctor electrode self-powered; when the colelctor electrode of optical coupling isolator 2Q is with emitter stage conducting, audion 2GB also follows conducting; audion 2BG and the composition non-contact alternating-current switch conducting of diode 2D1-2D4 bridge rectifier, A.C. contactor 2KM adhesive。Detailed description of the invention is the light emitting diode positive pole of optical coupling isolator 2Q and negative pole is control signal 2S, the base stage of the emitter stage connecting triode 2GB of optical coupling isolator 2Q and resistance 2R2, the emitter stage of the other end connecting triode 2BG of resistance 2R2, the positive pole of diode 2D3 and the positive pole of diode 2D4, the colelctor electrode of optical coupling isolator 2Q connects resistance 2R1, the colelctor electrode of the other end connecting triode 2BG of resistance 2R1, the negative pole of diode 2D1 and the negative pole of diode 2D2, the negative pole of the cathode connecting diode 2D3 of diode 2D1 goes to connect alternating current power supply 2a as outfan, the negative pole of the cathode connecting diode 2D4 of diode 2D2 goes to connect ac contactor coil 2KM as outfan, the other end of ac contactor coil 2KM connects alternating current power supply 2c, when the control signal 2S end of protector isolated from power contactless relay 2DJ has control signal, A.C. contactor adhesive reaches the purpose controlled。
Fig. 3 is protector isolated from power contactless relay 3DJ circuit theory diagrams; circuit operation principle is control signal 3S LED operation of optical coupling isolator 3Q when having a control signal; insulating power supply 3VD powers to the colelctor electrode of optical coupling isolator 3Q; the emitter stage of the colelctor electrode of optical coupling isolator 3Q and optical coupling isolator 3Q turns on; control can turn off bidirectional triode thyristor 3CQ and control pole; make to turn off bidirectional triode thyristor 3CQ conducting, A.C. contactor 3KM adhesive, reach the purpose controlled。Detailed description of the invention is the light emitting diode positive pole of optical coupling isolator 3Q and negative pole is control signal 3S, the emitter stage of optical coupling isolator 3Q connects resistance 3R2 and resistance 3R3, the other end of resistance 3R3 connects can turn off bidirectional triode thyristor 3CQ control pole, the other end connection insulating power supply 3VD negative pole of resistance 3R2 goes to connect ac contactor coil 3KM one end as outfan with turning off bidirectional triode thyristor 3CQ lower end, the colelctor electrode of optical coupling isolator 3Q connects resistance 3R1, the other end of resistance 3R1 removes to connect the positive pole of insulating power supply 3VD, bidirectional triode thyristor 3CQ upper end can be turned off go to connect alternating current power supply 3a as outfan, the other end line alternating current power supply 3c of ac contactor coil 3KM, when the control signal 3S end of protector isolated from power contactless relay 3DJ has control signal, bidirectional triode thyristor 3CQ conducting can be turned off go to control ac contactor coil 3KM, A.C. contactor adhesive reaches the purpose controlled。
Fig. 4 is isolated from power contactless relay and analog protection circuit device combinational circuit principle schematic, circuit operation principle is that pressure starts by 4QM, A.C. contactor 4KM adhesive, motor 4M operates, A phase current mutual inductor 4LA, the current signal of B phase current mutual inductor 4LB and C phase current mutual inductor 4LC amplifies combiner circuit through three-phase current, circuit output when keeping away respectively through current foldback circuit or break phase and three-phase imbalance protection circuit or starting again, when overload flow or disconnected phase and three-phase imbalance occur as motor 4M, current foldback circuit or disconnected phase and three-phase imbalance protect circuit output low level, diode 4D6 or diode 4D7 moves the light emitting diode positive pole of optical coupling isolator 4Q2 to low level through diode 4D8, audion 4BG turns off, A.C. contactor 4KM power-off, motor 4M stops。Start circuit when keeping away and be served only for pump class protector; starting circuit output high level, diode 4D8 negative pole high level during starting when keeping away when pumping motor starts, over-current and-load protection is inoperative; pumping motor starts circuit output low level when keeping away after working well, and over-current and-load defencive function recovers。Detailed description of the invention is that protector isolated from power contactless relay 4DJ forms relay non-contact circuit together with analog circuit motor protector or pump class protector, the circuit of power voltage step down capacitor concatenates an insulating power supply transformator, the output of insulating power supply transformer secondary winding provides insulating power supply through regulated power supply to the colelctor electrode of optical coupling isolator in isolated from power contactless relay, realize optical coupling isolator and mains transformer isolation dual resisteance, the current signal of current transformer amplifies combiner circuit through three-phase current, circuit or current foldback circuit or break phase and three-phase imbalance protection circuit output protection control signal when keeping away then through starting, protector isolated from power contactless relay 4DJ action is made to reach the control to A.C. contactor, wherein start circuit when keeping away and be served only for pump class protector。Its circuit structure is A phase power supply 4a, B phase power supply 4b and C phase power supply 4c connects A.C. contactor 4KM, A phase power supply 4a1 connects winding 4TL1 of insulating power supply transformator and connects motor 4M through A phase current mutual inductor 4LA, B phase power supply 4b1 connects motor 4M through B phase current mutual inductor 4LB, C phase power supply 4c1 connects power voltage step down capacitor 4CD and connects motor 4M through C phase current mutual inductor 4LC, the other end of power voltage step down capacitor 4CD connects the input of regulated power supply 4WD1, the other end of winding 4TL1 of insulating power supply transformator connects another input of regulated power supply 4WD1, insulating power supply transformer secondary winding connects insulating power supply 4WD2, insulating power supply positive pole 4VD2 connects resistance 4R4, the other end of resistance 4R4 connects the colelctor electrode of optical coupling isolator 4Q2, the emitter stage of optical coupling isolator 4Q2 connects the base stage of resistance 4R5 and audion 4BG, insulating power supply negative pole 4VD2 connects the other end of resistance 4R5, the emitter stage of audion 4BG, the positive pole of diode 4D3 and diode 4D4 positive pole, the colelctor electrode of audion 4BG connects the negative pole of diode 4D1 and the negative pole of diode 4D3, the negative pole of the cathode connecting diode 4D3 of diode 4D1 goes to connect as protector isolated from power contactless relay 4DJ outfan and starts by 4QM and stop button 4TM, the negative pole of the cathode connecting diode 4D4 of diode 4D2 goes connection to start the other end by 4QM and A.C. contactor 4KM coil as another outfan of protector isolated from power contactless relay 4DJ, the other end of A.C. contactor 4KM coil connects alternating current power supply 4a, the other end of stop button 4TM connects alternating current power supply 4c, the coil two ends of current transformer 4LA, the coil two ends of the coil two ends summation current transformer 4LC of current transformer 4LB connect three-phase current respectively and amplify combiner circuit 4Q1, three-phase current amplifies the output of combiner circuit 4Q1 and connects circuit 4BS when starting keeps away respectively, current foldback circuit 4GZ and disconnected phase and three-phase imbalance protect circuit 4PH, start the output of circuit 4BS when keeping away and connect the positive pole of diode 4D5, the output of current foldback circuit 4GZ connects the negative pole of diode 4D6, the output of disconnected phase and three-phase imbalance protection circuit 4PH connects the negative pole of diode 4D7, the positive pole of diode 4D6 and the positive pole of diode 4D7 connect resistance 4R3, the other end of resistance 4R3 connects the negative pole of diode 4D5 and the negative pole of diode 4D8, the positive pole of diode 4D8 connects the light emitting diode positive pole of resistance 4R1 and optical coupling isolator 4Q2, the other end of resistance 4R1 connects positive supply 4VD1, the negative pole of the light emitting diode of optical coupling isolator 4Q2 connects resistance 4R2, the other end of resistance 4R2 connects power supply common port 4VE1。
Fig. 5 is isolated from power contactless relay and Intelligent Asynohornized Protector combinational circuit principle schematic, circuit operation principle is that pressure forward starts by 5QZ, the control signal 5S1 of intelligent protection circuit 5Q1 output makes protector isolated from power contactless relay 5DJ1 turn on, A.C. contactor 5KM1 adhesive, motor 5M starting operation, A phase current mutual inductor 5LA, the current signal of B phase current mutual inductor 5LB and C phase current mutual inductor 5LC controls through intelligent protection circuit 5Q1, when overload flow or disconnected phase and three-phase imbalance occur as motor 5M, the control signal 5S1 of intelligent protection circuit 5Q1 output makes protector isolated from power contactless relay 5DJ1 disconnect, when motor 5M stops。Detailed description of the invention is that isolated from power contactless relay forms relay non-contact circuit together with Intelligent Asynohornized Protector circuit, switching mode power supply transformer increases by two Secondary Winding insulating power supplies of optical coupling isolator colelctor electrode in rectifying and voltage-stabilizing is as isolated from power contactless relay, controlled isolated from power contactless relay by starting button respectively through intelligent protection circuit and open motor, the current signal of current transformer also passes through intelligent protection circuit control isolated from power contactless relay makes motor shut down when overcurrent or three-phase imbalance, its circuit structure is A phase power supply 5a, B phase power supply 5b and C phase power supply 5c connects the main contacts of A.C. contactor 5KM1 and the main contacts of A.C. contactor 5KM2, A phase power supply 5a1, B phase power supply 5b1 and C phase power supply 5c1 extends through A phase current mutual inductor 5LA, B phase current mutual inductor 5LB and C phase current mutual inductor 5LC goes to connect motor 5M again, the secondary coil of A phase current mutual inductor 5LA, the secondary coil of B phase current mutual inductor 5LB and the secondary coil of C phase current mutual inductor 5LC connect intelligent protection circuit 5Q1 respectively, forward starts presses 5QZ one end connection positive supply 5VD, forward starts presses 5QZ other end connection intelligent protection circuit 5Q1, back-to-back starting is pressed 5QF one end and is connected positive supply 5VD, back-to-back starting is pressed the 5QF other end and is connected intelligent protection circuit 5Q1, stop button 5TM one end connects positive supply 5VD, the stop button 5TM other end connects intelligent protection circuit 5Q1, the light emitting diode two ends of optical coupling isolator 5Q2 in the control signal 5S1 connection protector isolated from power contactless relay 5DJ1 of intelligent protection circuit 5Q1 output, the colelctor electrode of optical coupling isolator 5Q2 connects resistance 5R1, the other end of resistance 5R1 connects insulating power supply positive pole 5VD1, the base stage of the emitter stage connecting triode 5GB1 of optical coupling isolator 5Q2 and resistance 5R2, the emitter stage of the other end connecting triode 5BG1 of resistance 5R2, the positive pole of diode 5D3, the positive pole of diode 5D4 and insulating power supply negative pole 5VD2, the colelctor electrode of audion 5GB1 connects the negative pole of diode 5D1 and the negative pole of diode 5D3, the light emitting diode two ends of optical coupling isolator 5Q3 in the control signal 5S2 connection protector isolated from power contactless relay 5DJ2 of intelligent protection circuit 5Q1 output, the colelctor electrode of optical coupling isolator 5Q3 connects resistance 5R3, the other end of resistance 5R3 connects insulating power supply positive pole 5VD3, the base stage of the emitter stage connecting triode 5GB2 of optical coupling isolator 5Q3 and resistance 5R4, the emitter stage of the other end connecting triode 5BG2 of resistance 5R4, the positive pole of diode 5D7, the positive pole of diode 5D8 and insulating power supply negative pole 5VD4, the colelctor electrode of audion 5GB2 connects the negative pole of diode 5D5 and the negative pole of diode 5D6, the Alternating Current Power Supply end of A phase power supply 5a connecting valve power supply 5KD, the positive pole of diode 5D2 and the negative pole of diode 5D4, the positive pole of diode 5D6 and the negative pole of diode 5D8, another Alternating Current Power Supply end of C phase power supply 5c connecting valve power supply 5KD, the interlocking contact of A.C. contactor 5KM1 and the interlocking contact of A.C. contactor 5KM2, A.C. contactor 5KM1 interlocks the coil of the other end connection A.C. contactor 5KM2 of contact, A.C. contactor 5KM2 interlocks the coil of the other end connection A.C. contactor 5KM1 of contact, A.C. contactor 5KM1 coil the other end connect the negative pole of the positive pole of diode 5D1 and diode 5D3, A.C. contactor 5KM2 coil the other end connect the negative pole of the positive pole of diode 5D5 and diode 5D7, switching mode power supply transformer 5T is by winding 5TL1 of switching mode power supply transformer, switching mode power supply transformer Secondary Winding 5TL2, switching mode power supply transformer Secondary Winding 5TL3, switching mode power supply transformer Secondary Winding 5TL4 and switching mode power supply transformer Secondary Winding 5TL5 composition, switching mode power supply transformer Secondary Winding 5TLA connects insulating power supply 5WD1, switching mode power supply transformer Secondary Winding 5TL5 connects insulating power supply 5WD2, Switching Power Supply 5KD exports positive supply 5VD, negative supply 5VC and power supply common port 4VE, forward starts presses 5QZ, back-to-back starting is pressed one end of 5QF and stop button 5TM and is connected positive supply 5VD, the other end connects intelligent protection circuit 5Q1。
Claims (5)
1. a protector isolated from power contactless relay, it is characterized in that protector isolated from power contactless relay 1DJ adopts high countervoltage triode or compound transistor and bridge rectifier composition non-contact alternating-current switch circuit, high countervoltage triode or compound transistor base stage are controlled by the emitter stage of optical coupling isolator, the collector supply of optical coupling isolator is provided by independent insulating power supply, realize insulating power supply and the double, two isolation of optical coupling isolator, by mutually isolated for the protection control circuit of non-contact alternating-current switch circuit Yu low-voltage, control signal drives audion through optical coupling isolator, non-contact alternating-current switch circuit turn-on and protector isolated from power contactless relay 1DJ conducting remove to control the catalyst of forceful electric power circuit, its circuit structure is the light emitting diode positive pole of optical coupling isolator 1Q and negative pole is control signal 1S, the base stage of the emitter stage connecting triode 1GB of optical coupling isolator 1Q and resistance 1R2, the emitter stage of the other end connecting triode 1BG of resistance 1R2, the positive pole of diode 1D3, the positive pole of diode 1D4 and the negative pole of insulating power supply 1VD, the colelctor electrode of optical coupling isolator 1Q connects resistance 1R1, the other end of resistance 1R1 removes to connect the positive pole of insulating power supply 1VD, the colelctor electrode of audion 1BG connects the negative pole of diode 1D1 and the negative pole of diode 1D2, the negative pole of the cathode connecting diode 1D3 of diode 1D1 goes to connect alternating current power supply 1a as outfan, the negative pole of the cathode connecting diode 1D4 of diode 1D2 goes to connect ac contactor coil 1KM as outfan, the other end of ac contactor coil 1KM connects alternating current power supply 1c, when the control signal 1S end of protector isolated from power contactless relay 1DJ has control signal, A.C. contactor 1KM adhesive reaches the purpose controlled。
2. a protector isolated from power contactless relay, it is characterized in that in protector isolated from power contactless relay 2DJ, the colelctor electrode of optical coupling isolator is through resistance connecting triode colelctor electrode self-powered, when the colelctor electrode of optical coupling isolator is with emitter stage conducting, conducting also followed by audion, its circuit structure is the light emitting diode positive pole of optical coupling isolator 2Q and negative pole is control signal 2S, the base stage of the emitter stage connecting triode 2GB of optical coupling isolator 2Q and resistance 2R2, the emitter stage of the other end connecting triode 2BG of resistance 2R2, the positive pole of diode 2D3 and the positive pole of diode 2D4, the colelctor electrode of optical coupling isolator 2Q connects resistance 2R1, the colelctor electrode of the other end connecting triode 2BG of resistance 2R1, the negative pole of diode 2D1 and the negative pole of diode 2D2, the negative pole of the cathode connecting diode 2D3 of diode 2D1 goes to connect alternating current power supply 2a as outfan, the negative pole of the cathode connecting diode 2D4 of diode 2D2 goes to connect ac contactor coil 2KM as outfan, the other end of ac contactor coil 2KM connects alternating current power supply 2c, when the control signal 2S end of protector isolated from power contactless relay 2DJ has control signal, A.C. contactor adhesive reaches the purpose controlled。
3. a protector isolated from power contactless relay, it is characterized in that protector isolated from power contactless relay 3DJ adopts and can turn off bidirectional triode thyristor composition electronic AC switch, relay is replaced to go to control A.C. contactor with bidirectional triode thyristor can be turned off, its circuit structure is the light emitting diode positive pole of optical coupling isolator 3Q and negative pole is control signal 3S, the emitter stage of optical coupling isolator 3Q connects resistance 3R2 and resistance 3R3, the other end of resistance 3R3 connects can turn off bidirectional triode thyristor 3CQ control pole, the other end connection insulating power supply 3VD negative pole of resistance 3R2 goes to connect ac contactor coil 3KM one end as outfan with turning off bidirectional triode thyristor 3CQ lower end, the colelctor electrode of optical coupling isolator 3Q connects resistance 3R1, the other end of resistance 3R1 removes to connect the positive pole of insulating power supply 3VD, bidirectional triode thyristor 3CQ upper end can be turned off go to connect alternating current power supply 3a as outfan, the other end line alternating current power supply 3c of ac contactor coil 3KM, when the control signal 3S end of protector isolated from power contactless relay 3DJ has control signal, bidirectional triode thyristor 3CQ conducting can be turned off go to control ac contactor coil 3KM, A.C. contactor adhesive reaches the purpose controlled。
4. a protector isolated from power contactless relay, it is characterized in that isolated from power contactless relay and the combination of analog protection circuit device, it is made up of together with analog circuit motor protector or pump class protector protector isolated from power contactless relay 4DJ, the circuit of power voltage step down capacitor concatenates an insulating power supply transformator, the output of insulating power supply transformer secondary winding provides insulating power supply through regulated power supply to the colelctor electrode of optical coupling isolator in isolated from power contactless relay, realize optical coupling isolator and mains transformer isolation dual resisteance, the current signal of current transformer amplifies combiner circuit through three-phase current, circuit or current foldback circuit or break phase and three-phase imbalance protection circuit output protection control signal when keeping away then through starting, protector isolated from power contactless relay 4DJ action is made to reach the control to A.C. contactor, wherein start circuit when keeping away and be served only for pump class protector, its circuit structure is A phase power supply 4a, B phase power supply 4b and C phase power supply 4c connects A.C. contactor 4KM, A phase power supply 4a1 connects winding 4TL1 of insulating power supply transformator and connects motor 4M through A phase current mutual inductor 4LA, B phase power supply 4b1 connects motor 4M through B phase current mutual inductor 4LB, C phase power supply 4c1 connects power voltage step down capacitor 4CD and connects motor 4M through C phase current mutual inductor 4LC, the other end of power voltage step down capacitor 4CD connects the input of regulated power supply 4WD1, the other end of winding 4TL1 of insulating power supply transformator connects another input of regulated power supply 4WD1, insulating power supply transformer secondary winding connects insulating power supply 4WD2, insulating power supply positive pole 4VD2 connects resistance 4R4, the other end of resistance 4R4 connects the colelctor electrode of optical coupling isolator 4Q, the emitter stage of optical coupling isolator 4Q connects the base stage of resistance 4R5 and audion 4BG, insulating power supply negative pole 4VD2 connects the other end of resistance 4R5, the emitter stage of audion 4BG, the positive pole of diode 4D3 and diode 4D4 positive pole, the colelctor electrode of audion 4BG connects the negative pole of diode 4D1 and the negative pole of diode 4D3, the negative pole of the cathode connecting diode 4D3 of diode 4D1 goes to connect as electrical isolation contactless relay 4DJ outfan and starts by 4QM and stop button 4TM, the negative pole of the cathode connecting diode 4D4 of diode 4D2 goes connection to start the other end by 4QM and A.C. contactor 4KM coil as another outfan of protector isolated from power contactless relay 4DJ, the other end of A.C. contactor 4KM coil connects alternating current power supply 4a, the other end of stop button 4TM connects alternating current power supply 4c, the coil two ends of current transformer 4LA, the coil two ends of the coil two ends summation current transformer 4LC of current transformer 4LB connect three-phase current respectively and amplify combiner circuit 4Q1, three-phase current amplifies the output of combiner circuit 4Q1 and connects circuit 4BS when starting keeps away respectively, current foldback circuit 4GZ and disconnected phase and three-phase imbalance protect circuit 4PH, start the output of circuit 4BS when keeping away and connect the positive pole of diode 4D5, the output of current foldback circuit 4GZ connects the negative pole of diode 4D6, the output of disconnected phase and three-phase imbalance protection circuit 4PH connects the negative pole of diode 4D7, the positive pole of diode 4D6 and the positive pole of diode 4D7 connect resistance 4R3, the other end of resistance 4R3 connects the negative pole of diode 4D5 and the negative pole of diode 4D8, the positive pole of diode 4D8 connects the light emitting diode positive pole of resistance 4R1 and optical coupling isolator 4Q2, the other end of resistance 4R1 connects positive supply 4VD1, the negative pole of the light emitting diode of optical coupling isolator 4Q2 connects resistance 4R2, the other end of resistance 4R2 connects power supply common port 4VE1。
5. a protector isolated from power contactless relay, it is characterized in that isolated from power contactless relay and Intelligent Asynohornized Protector combination, it is made up of together with Intelligent Asynohornized Protector circuit with protector isolated from power contactless relay 5DJ2 protector isolated from power contactless relay 5DJ1, switching mode power supply transformer increases by two Secondary Winding insulating power supplies of optical coupling isolator colelctor electrode in rectifying and voltage-stabilizing is as isolated from power contactless relay, controlled isolated from power contactless relay by starting button respectively through intelligent protection circuit and open motor, the current signal of current transformer also passes through intelligent protection circuit control isolated from power contactless relay makes motor shut down when overcurrent or three-phase imbalance, its circuit structure is A phase power supply 5a, B phase power supply 5b and C phase power supply 5c connects the main contacts of A.C. contactor 5KM1 and the main contacts of A.C. contactor 5KM2, A phase power supply 5a1, B phase power supply 5b1 and C phase power supply 5c1 extends through A phase current mutual inductor 5LA, B phase current mutual inductor 5LB and C phase current mutual inductor 5LC goes to connect motor 5M again, the secondary coil of A phase current mutual inductor 5LA, the secondary coil of B phase current mutual inductor 5LB and the secondary coil of C phase current mutual inductor 5LC connect intelligent protection circuit 5Q1 respectively, forward starts presses 5QZ one end connection positive supply 5VD, forward starts presses 5QZ other end connection intelligent protection circuit 5Q1, back-to-back starting is pressed 5QF one end and is connected positive supply 5VD, back-to-back starting is pressed the 5QF other end and is connected intelligent protection circuit 5Q1, stop button 5TM one end connects positive supply 5VD, the stop button 5TM other end connects intelligent protection circuit 5Q1, the light emitting diode two ends of optical coupling isolator 5Q2 in the control signal 5S1 connection protector isolated from power contactless relay 5DJ1 of intelligent protection circuit 5Q1 output, the colelctor electrode of optical coupling isolator 5Q2 connects resistance 5R1, the other end of resistance 5R1 connects insulating power supply positive pole 5VD1, the base stage of the emitter stage connecting triode 5GB1 of optical coupling isolator 5Q2 and resistance 5R2, the emitter stage of the other end connecting triode 5BG1 of resistance 5R2, the positive pole of diode 5D3, the positive pole of diode 5D4 and insulating power supply negative pole 5VD2, the colelctor electrode of audion 5GB1 connects the negative pole of diode 5D1 and the negative pole of diode 5D3, the light emitting diode two ends of optical coupling isolator 5Q3 in the control signal 5S2 connection protector isolated from power contactless relay 5DJ2 of intelligent protection circuit 5Q1 output, the colelctor electrode of optical coupling isolator 5Q3 connects resistance 5R3, the other end of resistance 5R3 connects insulating power supply positive pole 5VD3, the base stage of the emitter stage connecting triode 5GB2 of optical coupling isolator 5Q3 and resistance 5R4, the emitter stage of the other end connecting triode 5BG2 of resistance 5R4, the positive pole of diode 5D7, the positive pole of diode 5D8 and insulating power supply negative pole 5VD4, the colelctor electrode of audion 5GB2 connects the negative pole of diode 5D5 and the negative pole of diode 5D6, the Alternating Current Power Supply end of A phase power supply 5a connecting valve power supply 5KD, the positive pole of diode 5D2 and the negative pole of diode 5D4, the positive pole of diode 5D6 and the negative pole of diode 5D8, another Alternating Current Power Supply end of C phase power supply 5c connecting valve power supply 5KD, the interlocking contact of A.C. contactor 5KM1 and the interlocking contact of A.C. contactor 5KM2, A.C. contactor 5KM1 interlocks the coil of the other end connection A.C. contactor 5KM2 of contact, A.C. contactor 5KM2 interlocks the coil of the other end connection A.C. contactor 5KM1 of contact, A.C. contactor 5KM1 coil the other end connect the negative pole of the positive pole of diode 5D1 and diode 5D3, A.C. contactor 5KM2 coil the other end connect the negative pole of the positive pole of diode 5D5 and diode 5D7, switching mode power supply transformer 5T is by winding 5TL1 of switching mode power supply transformer, switching mode power supply transformer Secondary Winding 5TL2, switching mode power supply transformer Secondary Winding 5TL3, switching mode power supply transformer Secondary Winding 5TL4 and switching mode power supply transformer Secondary Winding 5TL5 composition, switching mode power supply transformer Secondary Winding 5TL4 connects insulating power supply 5WD1, switching mode power supply transformer Secondary Winding 5TL5 connects insulating power supply 5WD2, Switching Power Supply 5KD exports positive supply 5VD, negative supply 5VC and power supply common port 4VE, forward starts presses 5QZ, back-to-back starting is pressed one end of 5QF and stop button 5TM and is connected positive supply 5VD, the other end connects intelligent protection circuit 5Q1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520789996.9U CN205335818U (en) | 2015-10-08 | 2015-10-08 | Protector power isolation contactless relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520789996.9U CN205335818U (en) | 2015-10-08 | 2015-10-08 | Protector power isolation contactless relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205335818U true CN205335818U (en) | 2016-06-22 |
Family
ID=56213095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520789996.9U Withdrawn - After Issue CN205335818U (en) | 2015-10-08 | 2015-10-08 | Protector power isolation contactless relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205335818U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140887A (en) * | 2015-10-08 | 2015-12-09 | 介国安 | Protector power supply isolation contactless relay |
| CN111508774A (en) * | 2020-04-21 | 2020-08-07 | 介国安 | Capacitor voltage-reducing cascade type multi-path intelligent sub-control contactor |
-
2015
- 2015-10-08 CN CN201520789996.9U patent/CN205335818U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140887A (en) * | 2015-10-08 | 2015-12-09 | 介国安 | Protector power supply isolation contactless relay |
| CN105140887B (en) * | 2015-10-08 | 2018-02-02 | 介国安 | Protector isolated from power contactless relay |
| CN111508774A (en) * | 2020-04-21 | 2020-08-07 | 介国安 | Capacitor voltage-reducing cascade type multi-path intelligent sub-control contactor |
| CN111508774B (en) * | 2020-04-21 | 2022-11-25 | 介国安 | Capacitor voltage-reducing cascade type multi-path intelligent sub-control contactor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201122833Y (en) | Micro-controlled electricity-saving protection device | |
| CN205335818U (en) | Protector power isolation contactless relay | |
| CN105140887A (en) | Protector power supply isolation contactless relay | |
| CN102833920A (en) | Junction box with signal detection switching from single control to double control | |
| CN202750302U (en) | Single control-to-dual control conversion junction box with signal detection | |
| CN205004732U (en) | Contactless relay protection ware of intelligent motor power isolation | |
| CN203522132U (en) | Breaker electric leakage controller | |
| CN205430190U (en) | Simple and practical's electronic switch control circuit | |
| CN201490913U (en) | Multifunctional soft-touch power switch control circuit | |
| CN201336551Y (en) | Wall remote-control socket control device | |
| CN204992537U (en) | Motor and pump class contactless relay analog circuit protector | |
| CN204650159U (en) | The power failure intelligent controller of hand-held mobile electrical equipment | |
| CN204203694U (en) | A kind of socket of Household intelligent wireless remote-controlled power switch | |
| CN205847074U (en) | A kind of type photoelectric isolating A.C. contactor startup optimization holding circuit | |
| CN203339651U (en) | Multifunctional air switch | |
| CN204290263U (en) | The electronic insurance circuit of self-replaced type | |
| CN202840474U (en) | Leakage protective circuit | |
| CN204130465U (en) | A kind of built-in circuit breaker for oil-immersed transformer | |
| CN201877780U (en) | Protection circuit with prompting function | |
| CN2917479Y (en) | Cooking pot with circuit breaking switch and thermal insulation function | |
| CN204790359U (en) | Intelligence household electrical appliances controller output control circuit | |
| CN207302978U (en) | A kind of adjustable contact contactor | |
| CN204497161U (en) | A kind of terminal combined appliance | |
| CN204012646U (en) | A kind of electric equipment multifunctional protection device | |
| CN201820102U (en) | Home appliance load switcher |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160622 Effective date of abandoning: 20180202 |