CN105428158A - AC contactor excitation coil and driving mechanism thereof - Google Patents
AC contactor excitation coil and driving mechanism thereof Download PDFInfo
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- CN105428158A CN105428158A CN201510729378.XA CN201510729378A CN105428158A CN 105428158 A CN105428158 A CN 105428158A CN 201510729378 A CN201510729378 A CN 201510729378A CN 105428158 A CN105428158 A CN 105428158A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/44—Magnetic coils or windings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H2047/025—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay with taking into account of the thermal influences, e.g. change in resistivity of the coil or being adapted to high temperatures
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Abstract
The invention relates to an AC contactor excitation coil and a driving mechanism thereof and discloses a copper clad aluminum enamelled wire excitation coil and a control circuit of the excitation coil. Advantages of the material of the copper clad aluminum enamelled wire are utilized, disadvantages of relatively high cost and large copper material consumption existing in a pure copper enamelled wire in the prior art are solved, the control circuit having different functions is utilized to guarantee normal operation of the copper clad aluminum enamelled wire excitation coil. The excitation coil is characterized in that the copper clad aluminum enamelled wire is utilized to replace the pure copper enamelled wire for the excitation coil, the copper clad aluminum enamelled wire excitation coil is connected with the control circuit including a rectification circuit, a conversion circuit, a start circuit and a holding circuit, and functions of AC-to-DC conversion, high-voltage-holding-to-low-voltage-holding conversion of the control circuit are utilized to make the copper clad aluminum enamelled wire excitation coil operate normally. Through the excitation coil, product energy consumption can be effectively reduced, coil temperature rising is reduced, service life is prolonged, and cost of the copper clad aluminum enamelled wire is lower than that of the pure copper enamelled wire.
Description
Technical field
The present invention relates to A.C. contactor magnet exciting coil field, is A.C. contactor magnet exciting coil and driving mechanism thereof concretely.
Background technology
A.C. contactor is mainly used in frequent connection or disjunction alternating current circuit, has control capability large, can remote operated feature; relay is coordinated to realize fixed cycle operator; interlocked control, various fixing quantity and decompression, under-voltage protection, be widely used in automatic control circuit.Contactor more than 90% on sale is at present all the simple conventional AC contactor of structure, and conventional AC contactor is all that make magnet exciting coil excitation, adhesive drives the armature of link gear directly to magnet exciting coil for alternating current, main contact is closed, connects load.The magnet exciting coil of fine copper enamelled wire coiling, in the overall process of A.C. contactor work, copper loss and iron loss account for 90% of whole energy consumption, and these losses all become heat energy, make magnet exciting coil temperature rise too high, cause premature aging or scaling loss, shorten equipment life, cost is higher simultaneously, and copper material consumption is large.Therefore need the material substitution fine copper enamelled wire that a kind of cost is lower, reliability is high, the life-span is long, copper-in-aluminum enameled wire adopts clad welded manufacturing technology, copper strips is coated on one heart the outer surface of aluminium matter heart yearn, and make to be formed between layers of copper and heart yearn firmly interatomic metallurgical binding, its physical characteristic is between copper aluminium, combine the good electric conductivity of copper and the lightweight advantage of aluminium, the DC resistivity of copper-in-aluminum enameled wire is about 1.45 times of fine copper enamelled wire; When resistance is identical, copper-in-aluminum enameled wire weight is about 1/2 of fine copper enamelled wire.Copper-in-aluminum enameled wire density is 1/2.5 of the fine copper enamelled wire of identical wire diameter, very effective to the weight reducing coil.Use copper-in-aluminum enameled wire to replace fine copper enamelled wire, at least can save the cost of 30%.But existing magnet exciting coil and control circuit use copper-in-aluminum enameled wire directly to replace fine copper enamelled wire to have problems, the resistivity of copper-in-aluminum enameled wire wire rod is higher, coil temperature rise can be caused faster, and the control circuit starting resistor bound of prior art can not meet the designing requirement of copper cover aluminum magnet exciting coil, therefore need supporting control circuit to ensure that the copper-in-aluminum enameled wire magnet exciting coil being applicable to A.C. contactor normally works.
Technical problem to be solved by this invention, is just to provide a kind of A.C. contactor magnet exciting coil, uses copper-in-aluminum enameled wire to replace existing fine copper enamelled wire to reduce product cost and weight.
The present invention provides A.C. contactor magnet exciting coil for overcoming the above problems, described A.C. contactor magnet exciting coil is made up of the enamelled wire be wound in insulation framework, wherein enamelled wire is copper-in-aluminum enameled wire, the insulating barrier that copper-in-aluminum enameled wire comprises copper-clad coating, is located at the aluminium in copper-clad coating and is located at outside copper-clad coating.
Further, A.C. contactor magnet exciting coil adopt direct current supply, adopt direct current supply can reduce the wastage, be convenient to control, can effectively solve copper-in-aluminum enameled wire because of temperature coefficient and resistivity higher, the coil temperature rise caused problem faster.
Optionally, copper-in-aluminum enameled wire uses QA line.Without the need to removing separately enamelled wire coat of paint during welding, workable, stop dry joint rosin joint, production efficiency is high, and conforming product rate is high.
Optionally, copper-clad coating and the aluminium part by weight be located in copper-clad coating can adjust accordingly according to actual needs.
Present invention also offers A.C. contactor driving mechanism, comprise A.C. contactor magnet exciting coil and control circuit, wherein A.C. contactor magnet exciting coil is made up of the enamelled wire be wound in insulation framework, wherein enamelled wire is copper-in-aluminum enameled wire, the insulating barrier that copper-in-aluminum enameled wire comprises copper-clad coating, is located at the aluminium in copper-clad coating and is located at outside copper-clad coating.Control circuit, comprises rectification circuit, start-up circuit, change-over circuit and holding circuit, and wherein rectification circuit is connected with start-up circuit and holding circuit respectively, and start-up circuit and holding circuit parallel connection, change-over circuit is connected to the trigger end of startup and holding circuit.AC conversion is functionally direct current by rectification circuit, eliminate fine copper magnet exciting coil and adopt the distinctive sluggishness of Alternating Current Power Supply and eddy current loss, further reduction product energy consumption, decrease coil temperature rise simultaneously, change-over circuit has the function switching start-up circuit and holding circuit, in time meeting sticking condition, disconnect start-up circuit be communicated with holding circuit, otherwise disconnect holding circuit connection start-up circuit, connect start-up circuit.The copper-in-aluminum enameled wire magnet exciting coil being applicable to A.C. contactor adopts high pressure adhesive, the working method of low pressure sticking, because copper-in-aluminum enameled wire is higher than fine copper enamelled wire resistivity, therefore flow through the higher voltage of identical electric current needs, reduce holding current when sticking simultaneously, reduce copper loss, reduce coil temperature rise, high voltage startup the suction-combining force promotes more than 30%, accommodation is wide, be easy to adjustment, in the whole course of work, magnet exciting coil temperature rise is extremely low even without temperature rise, to the hot properties of magnet exciting coil wire rod, the parameter requests such as conductance are lower, fine copper enamelled wire is replaced to be used in magnet exciting coil to realize copper-in-aluminum enameled wire.Its working method is supply magnet exciting coil high voltage when A.C. contactor starts, and makes magnet exciting coil obtain enough large electric current and produces enough strong magnetic field, guarantee the effective adhesive of A.C. contactor; In sticking state supply magnet exciting coil low voltage, under the prerequisite guaranteeing the reliable sticking of contactor, reduce holding current, reduce copper loss, reduce coil temperature rise.
Further, the bridge circuit that rectification circuit is connected and composed by diode is formed.
Optionally, change-over circuit is connected and composed by relay, the 7th diode, the 3rd electric capacity and the 4th electric capacity, and wherein the 4th electric capacity one end is connected with relay, the 7th diode and the 3rd electric capacity respectively, relay and the 7th diode and the 3rd Capacitance parallel connection.
Optionally, change-over circuit is connected and composed by relay, the 4th diode, the 3rd electric capacity and the 5th electric capacity, and the 3rd electric capacity one end is connected with relay, the 4th diode and the 5th electric capacity respectively, described relay and the 4th diode and the 5th Capacitance parallel connection.
Optionally, start-up circuit is connected and composed by the second diode, the 5th diode, relay contact, the second resistance, the second electric capacity and the 8th diode, the negative pole of the second diode is connected with the 5th diode, the second resistance and relay contact, the positive pole of the second electric capacity is connected with the 5th diode, the second resistance respectively, and the positive pole of the 8th diode is connected with the negative pole of the second electric capacity and relay contact respectively.
Optionally, start-up circuit is connected and composed by the first diode, the 3rd diode, the second resistance, relay contact, the 4th electric capacity and the 5th diode, by connecting to form rectifier bridge successively by four the first diodes, relay contact respectively with connected to form the positive pole of rectifier bridge, the positive pole of the 3rd diode and the second resistance by four the first diodes successively and be connected, the positive pole of the 4th electric capacity is connected with the negative pole of the 3rd diode and the second resistance, and the positive pole of the 5th diode is connected with the negative pole of the 4th electric capacity and relay contact respectively.
Optionally, holding circuit is by the first resistance, first electric capacity, 3rd diode, 4th diode, 6th diode, first diode, relay, 7th diode, 3rd electric capacity, 4th electric capacity, 9th diode and the tenth diode are formed, the positive pole of the 4th diode is connected with the negative pole of the first electric capacity and the 3rd diode respectively, the positive pole of the 4th electric capacity respectively with the negative pole of the 4th diode, the negative pole of the 6th diode, relay, the negative pole of the 7th diode is connected with the positive pole of the 3rd electric capacity, the positive pole of the 9th diode respectively with relay, the positive pole of the 7th diode, the negative pole of the 3rd electric capacity connects.
Optionally, holding circuit is connected and composed by the second electric capacity, the second diode, the first electric capacity, the 7th diode, relay, the 4th diode, the 3rd electric capacity and the 5th electric capacity, by connecting to form rectifier bridge successively by four the second diodes, the positive pole of the 3rd electric capacity respectively with connected to form the positive pole of rectifier bridge successively by four the second diodes, relay, the negative pole of the 4th diode, the positive pole of the 5th electric capacity be connected, the positive pole of the 6th diode is connected with the negative pole of relay, the 4th diode, the 5th electric capacity respectively.
The invention has the beneficial effects as follows, A.C. contactor magnet exciting coil and driving mechanism thereof, adopt high pressure adhesive, the working method of low pressure sticking, guarantees the reliable adhesive of A.C. contactor, stablizes sticking; The electric current of sticking state flow overexcitation coil reduces more than 50%, and holding power significantly reduces, and coil loss reduces, and effectively suppresses coil temperature rise; Use direct current supply, eliminate conventional AC contactor magnet exciting coil and adopt the distinctive sluggishness of Alternating Current Power Supply and eddy current loss, reduce product energy consumption further, reduce coil temperature rise, increase the service life; The line length of identical weight is 2.6 times of fine copper enamelled wire line length, produce the A.C. contactor magnet exciting coil of same size, the use amount of copper-in-aluminum enameled wire is 0.4 times of copper enamelled wire, magnet exciting coil weight reduces greatly, be conducive to improving A.C. contactor job stability, be conducive to production, storage, transport, install, use.
Below in conjunction with accompanying drawing, the present invention is further described, realizes the present invention to enable those skilled in the art.
Accompanying drawing explanation
Fig. 1 is A.C. contactor driving mechanism circuit connection diagram;
Fig. 2 is copper-in-aluminum enameled wire magnet exciting coil enamelled wire generalized section;
Fig. 3 is embodiment 1 electrical block diagram;
Fig. 4 is embodiment 2 electrical block diagram;
Embodiment
As shown in Figure 1, A.C. contactor magnet exciting coil and driving mechanism schematic diagram thereof, magnet exciting coil 6 is connected with control circuit 1, control circuit 1 input input AC electricity, alternating current is converted to direct current by rectification circuit 4, and direct current inputs start-up circuit 2 and holding circuit 5 respectively by change-over circuit 3.Start-up circuit 2 and holding circuit 5 parallel connection, change-over circuit 3 controls disconnection start-up circuit 2 in time meeting the sticking condition started, otherwise disconnects holding circuit 5, connects start-up circuit 2.
As shown in Figure 2, copper-in-aluminum enameled wire magnet exciting coil enamelled wire partial cross section schematic diagram, copper-in-aluminum enameled wire magnet exciting coil is made up of the copper-in-aluminum enameled wire be wound in insulation framework, the insulating barrier 7 that copper-in-aluminum enameled wire comprises copper-clad coating 8, is located at the aluminum core line 9 in copper-clad coating and is located at outside copper-clad coating.
Embodiment 1
As shown in Figure 3, electrical block diagram of the present invention, A1 input, the positive pole of the second diode D2, one end of first resistance R1 is connected with one end of the first electric capacity C1, the negative pole of the second diode D2, the positive pole of the 5th diode D5, one end of second resistance R2 is connected with a contact of relay J 1, the negative pole of the 5th diode D5, the other end of the second resistance R2 is connected with the positive pole of the second electric capacity C2, the negative pole of the second electric capacity C2, another contact of relay J 1 is connected with the positive pole of the 8th diode D8, the other end of the first electric capacity C1, the negative pole of the 3rd diode D3 is connected with the positive pole of the 4th diode D4, the other end of A2 input, the first resistance R1, the negative pole of the first diode D1 are connected with the positive pole of the 6th diode D6, one end of the negative pole of the 4th diode D4, the negative pole of the 6th diode D6 and relay J 1 coil, the negative pole of the 7th diode D7, the positive pole of the 3rd electric capacity C3, the positive pole of the 4th electric capacity C4 are connected, and the negative pole of the other end of relay J 1 coil, the positive pole of the 7th diode D7, the 3rd electric capacity C3 is connected with the positive pole of the 9th diode D9.The negative pole of the negative pole of the 8th diode D8, the negative pole of the 9th diode D9, the tenth diode D10 is connected with one end of magnet exciting coil L1, and the negative pole of the positive pole of the tenth diode D10, the other end of magnet exciting coil L1, the 4th electric capacity C4 is connected with the positive pole of the first diode D1.
Half-bridge starting current supply circuit: A1 holds input, then the second diode D2 carries out halfwave rectifier, and electric current flows through relay contact JK1, the 8th diode D8, magnet exciting coil L1 and the first diode D1 gets back to A2 end, forms loop.5th diode D5, the second resistance R2 and the second electric capacity C2 are the arc-suppression circuits of major loop, improve the useful life of circuit.
Holding current supply circuit: from A1 input and the input of A2 input, first the 4th diode D4 and the 6th diode D6 is adopted to carry out rectification again by the first electric capacity C1 step-down, electric current flows through coil and the 7th diode D7 of relay J 1, again by the 9th diode D9 and magnet exciting coil L1, then get back to A1 input and A2 input by the first diode D1, the 3rd diode D3, form loop.Use decompression capacitor C1 step-down, almost without temperature rise.7th diode D7, improves stability and the useful life of relay.3rd electric capacity C3, reaches delay effect, makes the reliable adhesive of contactor; Also play the effect of filtering, make the voltage of relay more stable.
Run change-over circuit: after the 3rd electric capacity C3 is full of electricity, electric current flows through the coil of relay J 1, and relay contact JK1 opens, and major loop power-off enters sticking state.
First resistance R1: suppress surge voltage, when the surge voltage maximum of transient state exceedes restriction, piezo-resistance just embodies its clamping performance, too high voltage is dragged down, allows late-class circuit be operated in the scope of a safety.
4th electric capacity C4: be connected on relay front end, can effectively improve relay front voltage, and what relay and contactor were run is more stable.
Tenth diode D10: reversal connection, at the two ends of coil, plays the effect of afterflow.
First diode D1, the 3rd diode D3, the 6th diode D6 and the 4th diode D4 form rectification circuit, relay J 1, the 7th diode D7, the 3rd electric capacity C3 and the 4th electric capacity C4 form change-over circuit, 4th electric capacity C4 one end is connected with relay J 1, the 7th diode D7 and the 3rd electric capacity C3 respectively, and relay J 1 is in parallel with the 7th diode D7 and the 3rd electric capacity C3.Relay J 1, 9th diode D9, 7th diode D7, 3rd electric capacity C3, 4th electric capacity C4 and the tenth diode D10 forms holding circuit, and (in the present embodiment, change-over circuit and holding circuit partially overlap, the components and parts of change-over circuit assume responsibility for the function of part holding circuit after converting), the positive pole of the 4th diode D4 is connected with the negative pole of the first electric capacity C1 and the 3rd diode D3 respectively, the positive pole of the 4th electric capacity C4 respectively with the negative pole of the 4th diode D4, the negative pole of the 6th diode D6, relay J 1, the negative pole of the 7th diode D7 is connected with the positive pole of the 3rd electric capacity C3, the positive pole of the 9th diode D9 respectively with relay J 1, the positive pole of the 7th diode D7, the negative pole of the 3rd electric capacity C3 connects.Second diode D2, the 5th diode D5, the second resistance R2, the second electric capacity C2, relay contact JK1 and the 8th diode D8 form start-up circuit, the negative pole of the second diode D2 is connected with the 5th diode D5, the second resistance R2 and relay contact JK1, the positive pole of the second electric capacity C2 is connected with the 5th diode D5, the second resistance R2 respectively, and the positive pole of the 8th diode D8 is connected with the negative pole of the second electric capacity C2 and relay contact JK1 respectively.
In the present embodiment, magnet exciting coil L1 is copper-in-aluminum enameled wire material, adopt direct current supply, rectification circuit, change-over circuit, holding circuit and start-up circuit is coordinated normally to work, through reality installation with the operating frequency of 3600 times per hour, continuous operation 1,000,000 times, Plant in good condition, magnet exciting coil is without obvious loss, and appearance colorless becomes.Static sticking 1 hour, magnet exciting coil is not relative to ambient temperature temperature rise higher than 5K, and Detection results is better than the high temperature rise of conventional AC electricity fine copper magnet exciting coil.
Embodiment 2
As shown in Figure 4, electrical block diagram of the present invention, the first resistance R1 is connected in parallel between A1 input and A2 input, can improve for strongly disturbing rejection ability such as thunders and lightnings.The rectifier input be made up of four the first diode D1 directly connects AC terminal, carries out bridge rectifier to alternating current, output ripple direct current.The 5th diode D5 that the rectifier anode be made up of four the first diode D1 is connected with forward by the normally-closed contact JK1 of relay J 1 is connected with magnet exciting coil L1 anode, for magnet exciting coil L1 provides attract current.In order to avoid producing electric arc during the normally-closed contact JK1 break-make of relay J 1, this routine relay contact JK1 is parallel with the arc-suppression circuit be made up of the 3rd diode D3, the second resistance R2 and the 4th electric capacity C4.Wherein, 3rd diode D3 connects with the 4th electric capacity C4 with after the second resistance R2 parallel connection, 3rd diode D3 positive pole connects the rectifier anode be made up of four the first diode D1,3rd diode D3 negative pole connects the positive pole of the 4th electric capacity C4, the negative pole of the 4th electric capacity C4 connects the 5th diode D5 positive pole, and the 5th diode D5 negative pole connects magnet exciting coil anode.In Fig. 4, magnet exciting coil L1 anode and negative terminal are parallel with the 7th diode D7, for reducing the interference of induced electromotive force.7th diode D7 plus earth, negative pole connects magnet exciting coil L1 anode, magnet exciting coil L1 negativing ending grounding.The rectifier negative pole be made up of four the first diode D1 is connected with the rectifier negative pole be made up of four the second diode D2 and ground connection, the rectifier input be made up of four the second diode D2 is connected with AC terminal A1 and A2 with the second electric capacity C2 respectively by the first electric capacity C1, the 6th diode D6 that the rectifier anode be made up of four the second diode D2 is connected with forward by the drive coil of relay J 1 is connected with magnet exciting coil L1 anode, and the rectifier anode be made up of four the second diode D2 is also by the 3rd electric capacity C3 ground connection.
In this routine circuit, relay J 1 drive coil two ends are parallel with the preventing jittering circuit that the 4th diode D4 and the 5th electric capacity C5 is formed, and can reduce the interference of back electromotive force during coil break-make, avoid contact to shake, by selecting the voltage stabilizing value of the 4th diode, the operation voltage of all right control relay.In Fig. 4 circuit, by selecting the capacity of the first electric capacity C1 and the second electric capacity C2 electric capacity, the output voltage of the rectifier be made up of four the second diode D2 can be adjusted, change the capacity of the 3rd electric capacity C3, the time of delay of relay J 1 normally-closed contact action can be adjusted.In this example, the operation voltage value of relay J 1 is significantly less than the lower limit of A.C. contactor pick-up voltage, thus when avoiding A.C. contactor to be in pick-up voltage lower limit critical zone, the contact shake that A.C. contactor adhesive repeatedly, release cause, fundamentally eliminates the hidden danger that contact melting welding appears in existing A.C. contactor.The rectifier be made up of four the first diode D1 and the rectifier be made up of four the second diode D2 form rectification circuit, 3rd electric capacity C3, the 5th electric capacity C5, the 4th diode D4 and relay J 1 form change-over circuit, wherein the 3rd electric capacity C3 one end is connected with relay J 1, the 4th diode D4 and the 5th electric capacity C5 respectively, and relay J 1 is in parallel with the 4th diode D4 and the 5th electric capacity C5.Second electric capacity C2, the rectifier be made up of four the second diode D2, 3rd electric capacity C3, 5th electric capacity C5, 4th diode D4, relay J 1, (in the present embodiment, change-over circuit and holding circuit partially overlap to form holding circuit with the 7th diode D7, the components and parts of change-over circuit assume responsibility for the function of part holding circuit after converting), wherein by connecting to form rectifier bridge successively by four the second diode D2, the positive pole of described 3rd electric capacity C3 respectively with the positive pole being connected to form rectifier bridge by four the second diode D2 successively, relay J 1, the negative pole of the 4th diode D4, the positive pole of the 5th electric capacity C5 connects, the positive pole of described 6th diode D6 respectively with relay J 1, 4th diode D4, the negative pole of the 5th electric capacity C5 connects.The rectifier be made up of four the first diode D1, 3rd diode D3, second resistance R2, 4th electric capacity C4, relay contact JK1 and the 5th diode D5 forms start-up circuit, and (in the present embodiment, start-up circuit and rectification circuit partially overlap, the components and parts of rectification circuit assume responsibility for the role of start-up circuit after converting), wherein connect to form rectifier bridge successively by four the first diode D1, described relay contact JK1 respectively with the positive pole being connected to form rectifier bridge by four the first diode D1 successively, the positive pole of the 3rd diode D3 is connected with the second resistance R2, the positive pole of described 4th electric capacity C4 is connected with the negative pole of the 3rd diode D3 and the second resistance, the positive pole of described 5th diode D5 is connected with the negative pole of the 4th electric capacity C4 and relay contact JK1 respectively.
In the present embodiment, magnet exciting coil L1 is copper-in-aluminum enameled wire material, adopt direct current supply, rectification circuit, change-over circuit, holding circuit and start-up circuit is coordinated normally to work, through reality installation with the operating frequency of 3600 times per hour, continuous operation 1,200,000 times, Plant in good condition, magnet exciting coil is without obvious loss, and appearance colorless becomes.Static sticking 1 hour, magnet exciting coil is not relative to ambient temperature temperature rise higher than 5K, and Detection results is better than the high temperature rise of conventional AC electricity fine copper magnet exciting coil.
By the description of embodiment described in Fig. 3 and Fig. 4, copper-in-aluminum enameled wire magnet exciting coil is furnished with the rectification circuit with alternating current inversion of direct current electric rectification function; When after contactor action, change-over circuit work, disconnects start-up circuit, connects holding circuit, makes contactor be converted to the change-over circuit of sticking from adhesive; There is coil big current is provided, make the start-up circuit of Contactor Starting; Have and provide holding current to coil, after making the holding circuit of the effective sticking of contactor (low-voltage sticking effectively reduces coil copper loss), existing fine copper enamelled wire magnet exciting coil can be substituted.
Claims (10)
1. A.C. contactor magnet exciting coil, described A.C. contactor magnet exciting coil is made up of the enamelled wire be wound in insulation framework, it is characterized in that: described enamelled wire is copper-in-aluminum enameled wire, the insulating barrier that described copper-in-aluminum enameled wire comprises copper-clad coating, is located at the aluminum core line in copper-clad coating and is located at outside copper-clad coating.
2. A.C. contactor magnet exciting coil according to claim 1, is characterized in that: described A.C. contactor magnet exciting coil adopts direct current supply.
3. A.C. contactor driving mechanism, comprise A.C. contactor magnet exciting coil and control circuit, it is characterized in that: described control circuit comprises rectification circuit, start-up circuit, change-over circuit and holding circuit, wherein rectification circuit is connected with start-up circuit and holding circuit respectively, start-up circuit is connected with magnet exciting coil with holding circuit, change-over circuit is connected to the trigger end of start-up circuit and holding circuit, alternating current is converted to direct current by described rectification circuit, described start-up circuit provides starting current to magnet exciting coil, A.C. contactor is under high pressure reliably started, described holding circuit provides holding current to magnet exciting coil, make A.C. contactor under low pressure sticking, to reduce holding current and to reduce magnet exciting coil heating, described change-over circuit switches start-up circuit and holding circuit, described A.C. contactor magnet exciting coil is made up of the enamelled wire be wound in insulation framework, wherein enamelled wire is copper-in-aluminum enameled wire, described copper-in-aluminum enameled wire comprises copper-clad coating, the insulating barrier be located at the aluminum core line in copper-clad coating and be located at outside copper-clad coating.
4. A.C. contactor driving mechanism according to claim 3, is characterized in that: the bridge circuit that described rectification circuit is connected and composed by diode is formed.
5. A.C. contactor driving mechanism according to claim 3, it is characterized in that: described change-over circuit is connected and composed by relay J 1, the 7th diode D7, the 3rd electric capacity C3 and the 4th electric capacity C4, described 4th electric capacity C4 one end is connected with relay J 1, the 7th diode D7 and the 3rd electric capacity C3 respectively, and described relay J 1 is in parallel with the 7th diode D7 and the 3rd electric capacity C3.
6. A.C. contactor driving mechanism according to claim 3, it is characterized in that: described change-over circuit is connected and composed by relay J 1, the 4th diode D4, the 3rd electric capacity C3 and the 5th electric capacity C5, described 3rd electric capacity C3 one end is connected with relay J 1, the 4th diode D4 and the 5th electric capacity C5 respectively, and described relay J 1 is in parallel with the 4th diode D4 and the 5th electric capacity C5.
7. A.C. contactor driving mechanism according to claim 3, it is characterized in that: described start-up circuit is connected and composed by the second diode D2, the 5th diode D5, relay contact JK1, the second resistance R2, the second electric capacity C2 and the 8th diode D8, the negative pole of described second diode D2 is connected with the 5th diode D5, the second resistance R2 and relay contact JK1, the positive pole of described second electric capacity C2 is connected with the 5th diode D5, the second resistance R2 respectively, and the positive pole of described 8th diode D8 is connected with the negative pole of the second electric capacity C2 and relay contact JK1 respectively.
8. A.C. contactor driving mechanism according to claim 3, it is characterized in that: described start-up circuit is by the first diode D1, 3rd diode D3, second resistance R2, relay contact JK1, 4th electric capacity C4 and the 5th diode D5 connects and composes, by connecting to form rectifier bridge successively by four the first diode D1, described relay contact JK1 respectively with the positive pole being connected to form rectifier bridge by four the first diode D1 successively, the positive pole of the 3rd diode D3 is connected with the second resistance R2, the positive pole of described 4th electric capacity C4 is connected with the negative pole of the 3rd diode D3 and the second resistance, the positive pole of described 5th diode D5 is connected with the negative pole of the 4th electric capacity C4 and relay contact JK1 respectively.
9. A.C. contactor driving mechanism according to claim 3, it is characterized in that: described holding circuit is by the first resistance R1, first electric capacity C1, 3rd diode D3, 4th diode D4, 6th diode D6, first diode D1, relay J 1, 7th diode D7, 3rd electric capacity C3, 4th electric capacity C4, 9th diode D9 and the tenth diode D10 is formed, the positive pole of described 4th diode D4 is connected with the negative pole of the first electric capacity C1 and the 3rd diode D3 respectively, the positive pole of described 4th electric capacity C4 respectively with the negative pole of the 4th diode D4, the negative pole of the 6th diode D6, relay J 1, the negative pole of the 7th diode D7 is connected with the positive pole of the 3rd electric capacity C3, the positive pole of described 9th diode D9 respectively with relay J 1, the positive pole of the 7th diode D7, the negative pole of the 3rd electric capacity C3 connects.
10. A.C. contactor driving mechanism according to claim 3, it is characterized in that: described holding circuit is by the second electric capacity C2, second diode D2, first electric capacity C1, 7th diode D7, relay J 1, 4th diode D4, 3rd electric capacity C3, 6th diode D6 and the 5th electric capacity C5 connects and composes, by connecting to form rectifier bridge successively by four the second diode D2, the positive pole of described 3rd electric capacity C3 respectively with the positive pole being connected to form rectifier bridge by four the second diode D2 successively, relay J 1, the negative pole of the 4th diode D4, the positive pole of the 5th electric capacity C5 connects, the positive pole of described 6th diode D6 respectively with relay J 1, 4th diode D4, the negative pole of the 5th electric capacity C5 connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510729378.XA CN105428158A (en) | 2015-10-31 | 2015-10-31 | AC contactor excitation coil and driving mechanism thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510729378.XA CN105428158A (en) | 2015-10-31 | 2015-10-31 | AC contactor excitation coil and driving mechanism thereof |
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| CN105428158A true CN105428158A (en) | 2016-03-23 |
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| CN201510729378.XA Pending CN105428158A (en) | 2015-10-31 | 2015-10-31 | AC contactor excitation coil and driving mechanism thereof |
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|---|---|---|---|---|
| CN1979696A (en) * | 2005-12-08 | 2007-06-13 | 胡明钦 | Aluminium-in-copper nano mica enamel-covered wire |
| WO2012023378A1 (en) * | 2010-08-20 | 2012-02-23 | 株式会社フジクラ | Electric wire, coil, device for designing electric wire, and electric motor |
| CN204179019U (en) * | 2014-10-24 | 2015-02-25 | 成都海沃斯电气技术有限公司 | Built-in A.C. contactor Drive and Control Circuit |
| CN204270980U (en) * | 2014-12-16 | 2015-04-15 | 成都海沃斯电气技术有限公司 | A.C. contactor half-bridge start control circuit |
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2015
- 2015-10-31 CN CN201510729378.XA patent/CN105428158A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1979696A (en) * | 2005-12-08 | 2007-06-13 | 胡明钦 | Aluminium-in-copper nano mica enamel-covered wire |
| WO2012023378A1 (en) * | 2010-08-20 | 2012-02-23 | 株式会社フジクラ | Electric wire, coil, device for designing electric wire, and electric motor |
| CN204179019U (en) * | 2014-10-24 | 2015-02-25 | 成都海沃斯电气技术有限公司 | Built-in A.C. contactor Drive and Control Circuit |
| CN204270980U (en) * | 2014-12-16 | 2015-04-15 | 成都海沃斯电气技术有限公司 | A.C. contactor half-bridge start control circuit |
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