CN104716738A - Circuit for CC-level double-power-supply automatic changeover switching appliance - Google Patents
Circuit for CC-level double-power-supply automatic changeover switching appliance Download PDFInfo
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- CN104716738A CN104716738A CN201510156943.8A CN201510156943A CN104716738A CN 104716738 A CN104716738 A CN 104716738A CN 201510156943 A CN201510156943 A CN 201510156943A CN 104716738 A CN104716738 A CN 104716738A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The invention discloses a circuit for a CC-level double-power-supply automatic changeover switching appliance. The circuit is characterized in that a key energy-saving circuit module is provided with a capacitive step-down circuit and an input selection switch. The capacitive step-down circuit is provided with a starting relay which serves as a short-circuiting switch and is used when contactors are subjected to full-voltage start-up, and an attracting hold mode of a contactor with relatively low power is powered by the capacitive step-down circuit, so that a high-voltage startup and low-voltage hold energy-saving mode is realized. The circuit has the following main advantages that energy-saving circuit module connection and the input selection switch are used in a matched manner, so that two alternating current contactors can jointly use one energy-saving circuit module, one energy-saving circuit module is saved, the structure of the circuit is simplified, and the reliability of the circuit is improved; the cost power factor is decreased by about 1, and the power consumption is low, the economical efficiency is high, the cost performance is high, no specific alternating current contactor noise exists during operation, the manufacturing is easy, the maintenance is convenient, the maintenance cost is low, and the circuit is energy-saving and environment-friendly. The circuit can be used in a manner of replacing PC level ATSE (Automatic Transfer Switching Equipment), thereby having relatively great popularization value.
Description
Technical field
The present invention relates to a kind of low-voltage electrical apparatus, particularly a kind of take A.C. contactor as the dual-power transfer switch electrical equipment of main switch.
Background technology
The important events of some low-voltage distributions, for reducing the economic loss caused because of power failure, adopt two road Power supplies: conventional, for subsequent use or for subsequent use each other, this two roads power supply can be all mains supply, and Ye Ke mono-tunnel is mains supply, and a road is that diesel engine generator is powered.When a road power supply in power supply process because of fault can not normal power supply time, its load is called dual-power transfer switch electrical equipment by the device switching to another road power supply, be called for short TSE, the device that its load is automatically handed over another road power supply is called automatic transfer switching electric appliance, is called for short ATSE.
At present, ATSE is generally made up of automatic change-over body and control circuit two parts, is mainly used in the important place not allowing to have a power failure.When ATSE detects that the deviation exceeding permission appears in the current power supply voltage of load or frequency, ATSE automatically switches to another Power supply, guarantees that load supplying does not interrupt.
TSE is generally categorized as PC level, CB level and CC level three ranks, is defined as follows by short-circuit capacity:
CB level---be equipped with the TSE of overcurrent release, its main contact can be connected and for disjunction short circuit current.
CC level---can connect and carry, but be not used in the TSE of disjunction short circuit current, the electrical equipment that this TSE requires primarily of the national standard meeting contactor is formed.
PC level---can connect and carry, but be not used in the TSE (note: if can meet the test requirements document of PC level, contactor can be used for PC level) of disjunction short circuit current.
Be in fact the same from the known CC level of definition with PC level, can regard a special case of PC level as, be that it is made up of contactor.
CB level ATSE and PC level ATSE distinguishes and is not only disjunction short circuit current ability, also there are differences in machinery formation, the selection of contact material, fail safe.CB level ATSE is made up of two circuit breakers, there is slide fastener, buckles problem again; Contact of breaker pressure is little, cannot carry short circuit withstand current; Contact material multiplex oxidizable silver-colored tungsten, silver-colored tungsten carbide etc., cause temperature rise to be increased, switch finally may be caused to burn after oxidation; Also there is power supply superposition problem during conversion, residual current circuit breaker may be caused to trip; When connecing fire-fighting load, not meeting regulation ATSE in national standard " control circuit of fixed fire pump driver " should with the requirement of short circuit and excess current protective function.After release dropout disjunction short circuit current, there will be mains side has electricity, the situation of load-side power-off, does not meet the power reguirements of I and II load.PC level ATSE overcomes CB level ATSE Problems existing, and as its contact pressure is not easily scolded out greatly, and contact is not easily by melting welding, can bear the impulse current of more than 20Ie, guarantees the reliable power supply of the important loads such as fire-fighting electric power system.Contact material good in oxidation resistance, high resistance are burnt, and as silicon alloy, also adopt and can clear up dust and oxide-film from wiping point, both improve useful life, and turn increased security performance; Electric clearance, creepage distance allowance are large, therefore its reliability is higher.
Current ATSE experienced by for four stages at home.First stage is contactor type, belongs to CC level, by two contactors and machinery and electric interlocking installation form, reliability is low, power consumption is large, electrical engineering apply in gradually replaced.Second stage is breaker type; belong to CB level; be made up of two circuit breakers, motor drive mechanism and mechanical interlock mechanism; there is short circuit or excess current protective function; volume is large, conversion speed is slow, mechanical interlocking reliability is not ideal enough; do not meet the instructions for use in the places such as fire-fighting load, its application has certain limitation.Phase III is on-load switch formula, belongs to PC level, and combined by two on-load switches and a set of built-in interlocking device, compact conformation, volume are little, self interlock, change and carry out driving switch by solenoid generation attraction, conversion speed is fast.Fourth stage is double-throw formula (bikini), also PC level is belonged to, main body is the isolating switch of single-pole double throw integration, by built-in mechanical connection hold mode, conversion is driven by motor, steadily and speed is fast, structure is simple, volume is little, self interlocking, safe and reliable in conversion, and has zero passage bit function.
The ATSE that current reliability is high not only requires that control circuit is intelligent, and have various signal, fire-fighting link and communication interface, accuracy of detection is high, and the setting parameter wide ranges such as voltage, frequency, delay time, Electro Magnetic Compatibility is good.Also require the shock resistance current capacity of switch main body high, can frequent transitions, mechanical interlocking is reliable, change-over time is fast, zero-bit function, and isolation distance is large, and the voltage that withstands shocks is high; The N pole of four-pole switch first can be closed and be divided afterwards, in case there is potential drifting on N line when switching, causes Aftercurrent protecting equipment misoperation.CB level can not meet the demands completely, but PC level ATSE exists the problems such as price is higher, maintenance cost is high, generally only just can adopt in very important place.
The improvement situation of existing CC level ATSE: early stage CC level ATSE majority adopts auxiliary relay or the time relay to build a control circuit as control element, controls the contactor on two major loops, realizes the conversion of two-way power supply.A.C. contactor is the industrial control electric appliance that a kind of technology is very ripe, is mainly used in controlling motor start-up and stopping, can frequent movement, enough bears the peak impulse current of more than 20Ie.And the peak impulse current of motor start-up moment is generally 6e ~ 7Ie, ATSE basic load type majority is the mixed load such as illuminating lamp, UPS, the moment that contact is connected, impulse current is less, even if be the inductive load such as fire pump, smoke exhaust fan, because ATSE switches fast, impulse current is super more than 20Ie, can not there is the situation of contact melting welding hardly.
The mechanical interlocking of early stage ATSE and the undesirable defect of electrical interlock reliability, detect in real time to the voltage signal of each road power supply, when there are the abnormal conditions such as decompression, under-voltage, overvoltage, automatically carries out conversion operations.Although Interlock Reliability improves, unresolved safety issue.
A.C. contactor as key element be based on " energising adhesive; charged maintenance; power-off discharge " operation principle on, namely when the coil is energized, static iron core produces electromagnetic attraction, will move iron core adhesive, because contact system and dynamic iron core link, therefore dynamic iron core drives three movable contact springs to run simultaneously, the closing of contact, thus switches on power.When the coil is de-energized, suction disappears, and dynamic iron core interlock part relies on the reaction force of spring and is separated, and main contact is disconnected, cuts off the electricity supply.For realizing its course of work, technological design and have employed corresponding structure, in running, magnetic hysteresis loss in iron core and short-circuited conducting sleeve and eddy current loss account for more than 90% of total energy consumption, and power factor is low, noise is large, and coil temperature rise is high, increase the electric energy loss on power network line, reduce the useful life of contactor coil.
In sum, CC level ATSE has the advantage of better economy.Overcome the low problem of Interlock Reliability at present, if the large weakness of its power consumption can be transformed with technological means row, reach the object of energy-conserving and environment-protective, reduce its temperature rise to improve its reliability, then can greatly improve its cost performance, the CC level ATSE be replaced will be made again to radiate vigour.
Summary of the invention
For the circuit solving the existing automatic change-over electric appliance with duplicate for CC level exists above-mentioned defect, the invention provides that a kind of reliability is high, power consumption is little, the circuit of the quiet CC level that works for the automatic change-over electric appliance with duplicate of CC level.
For achieving the above object, the scheme that the present invention takes is:
For a circuit for the automatic change-over electric appliance with duplicate of CC level, comprise two A.C. contactors as conventional mains switch and Backup Power Switch, and control the control circuit of two A.C. contactor work, wherein, the A.C. contactor being located at conventional mains switch end is defined as conventional contactor, and the A.C. contactor being located at Backup Power Switch end is defined as contactor for subsequent use, it is characterized in that: described control circuit comprises the working power module of powering for circuit system, as the control unit module of central data process, the power supply voltage signal detection module be connected with control unit module input respectively, human-computer interaction module, and contactor operating state detection module, the operating state display module be connected with control unit module output respectively, output alarm signal module, control the drive circuit module of follow-up energy-saving circuit module work, be connected with drive circuit module output and export the energy-saving circuit module that DC power supply drives A.C. contactor work, and the input selector switch be connected with the output of energy-saving circuit module and drive circuit module respectively, drop into selector switch and be provided with normally closed output and Chang Kai output, normally closed output is connected with the coil input end of conventional contactor, often opens output and is connected with the coil input end of contactor for subsequent use, wherein, energy-saving circuit module is the direct current automatic switch-over circuit of exportable two kinds of voltages, the direct current that exportable guarantee A.C. contactor pick-up voltage is higher when A.C. contactor adhesive and A.C. contactor adhesive after completing exportable guarantee A.C. contactor keep the direct current that attracting state voltage is lower, contactor operating state detection module is connected with conventional contactor and contactor for subsequent use respectively.
As the improvement of such scheme, described contactor operating state detection module is be located at the auxiliary contact on conventional contactor and contactor for subsequent use, the normally open contact linked with main contact that auxiliary contact is provided with and normally closed interlock.By the connection of normally open contact and normally closed interlock, the state of main noddle on contactor can be determined; Utilize auxiliary contact that regular alternating current contactor circuit interlock circuit also can be set, do not do further physical circuit explanation here.
Described energy-saving circuit module is that A.C. contactor is controlled power supply from exchanging the circuit module becoming direct current, it comprises the power selection switch selecting as A.C. contactor power supply to conventional power supply and stand-by power supply, the instantaneous pressure start-up circuit that closed action made by A.C. contactor can be started, can low voltage low pressure holding circuit that A.C. contactor is kept closed; The input of power selection switch is connected with stand-by power supply with conventional power supply, the output of power selection switch is connected with the input of instantaneous pressure start-up circuit with low pressure holding circuit respectively, and instantaneous pressure start-up circuit is connected with input selector switch input with the output of low pressure holding circuit.
Described power selection switch is the power supply selective relay being provided with two groups of normally closed normally open contacts, and its normally closed interlock is connected with conventional power supply, and its normally open contact is connected with stand-by power supply.Power selection switch guarantees that control circuit has two-way power supply to be in power supply state simultaneously.Two groups of normally closed normally open contacts, guarantee there is a road power supply normal power supply, and do not occur that two-way power supply is powered simultaneously, cause and interfere with each other.
Further illustrating as such scheme, the working power of control circuit is at least made up of two-way power supply, guarantees normally working when arbitrary road power failure of control circuit; Detected by the voltage signal of power supply voltage signal detection module to two-way power supply, to judge that whether power supply status is normal; Contactor operating state detection module detects the A.C. contactor operating state of two-way power supply simultaneously, guarantees that two contactors normally work; Control unit module, according to testing result, processes relevant information, shows, and exports control signal or alarm signal.Certainly, if Intelligent control circuit, man-machine communication's platform can also be added.When result needs to be transformed into another road power supply, control unit module sends corresponding control command to drive circuit module and selector switch, drive circuit module disconnects the control power supply of the A.C. contactor of mains side of originally devoting oneself to work, energy-saving circuit module dead electricity, output is zero, and the contactor of former adhesive is disconnected; (can certainly carry out time delay according to practical situations) connects the control power supply of the contactor switching another power supply fast subsequently, energy-saving circuit module obtain electric after, direct-on-line starting voltage after the rectification exported to target contactor coil, makes A.C. contactor adhesive through selector switch; After having started, power save circuit automatically switches to lower pulsating dc voltage, makes contactor keep attracting state.
The use of energy-saving circuit module, make the power factor of electromagnetic system after two A.C. contactor adhesives close to 1, power consumption becomes very low, the range of decrease is up to more than 95%, power savings is obvious, thus realize the long-term continuous firing of contactor and keep low-temperature-rise, perfection solves that the power consumption of early stage CC level ATSE Electromagnetic System of Contactor is large, the high problem of easily burning of coil temperature rise, enhances the useful life of two A.C. contactors.Because the contact of two A.C. contactors can not be in closure state simultaneously, the coupling of energy-saving circuit model calling and input selector switch uses, an energy-saving circuit module can be shared by two A.C. contactors, economize an energy-saving circuit module, simplify circuit structure, add the reliability of circuit, provide cost savings.
For the ATSE not having delay requirement, switching action generally can complete in 0.2s, the almost sensation of imperceptible power failure, the good A.C. contactor of suitable selection indices parameter and mix more reliable mechanical interlocks, PC level ATSE indices can be reached completely, PC level ATSE can be replaced to use, and its cost performance is high, safeguards more convenient.
Be worth further illustrating, described instantaneous pressure start-up circuit comprises high-voltage rectifier bridge, and controls the starting relay of instantaneous pressure start-up circuit break-make; Low pressure holding circuit comprises capacity voltage dropping circuit, lower pressure rectifier bridge, the high-low pressure isolating diode of sequentially connecting; Wherein, capacity voltage dropping circuit is by can the non-polar condenser of resistance to power frequency high voltage and the discharge resistance in parallel with this non-polar condenser form; The common port of starting relay is connected with the first common port of power supply selective relay, the input of high-voltage rectifier bridge is connected with the second common port of power supply selective relay and the output of often opening of starting relay respectively, and the input of capacity voltage dropping circuit is connected with the second common port of power supply selective relay and the normally closed output of starting relay respectively; After high-voltage rectifier bridge output is in parallel with aforementioned high-low pressure isolating diode, be connected with the common port dropping into selector switch by thermistor.Because the electric capacity that step-down in capacity voltage dropping circuit is used is idle electronic component, during work, itself does not consume active power, the power supply sinusoidal waveform after step-down can not be changed, load characteristic is converted to capacity load by original inductive load, not only electrical network can not be polluted, also compensating action is played to electrical network, produce positive effect.
Preferably, described non-polar condenser is CBB electric capacity, and its withstand voltage is 240V ~ 1000V, and its capacity is 0.1uF ~ 2.2uF.CBB electric capacity is polypropylene capactive, is using metal forming as electrode, and by itself and polypropylene film after the overlap of two ends, be wound into the capacitor of cylindric structure, nonpolarity, insulation impedance is very high, and frequency characteristic is excellent, and dielectric loss is very little.Be widely used on the circuit of resonant circuit, bypass circuit and high-frequency high-voltage.
Or described non-polar condenser is safety electric capacity, its withstand voltage is 240V ~ 600V, and its capacity is 0.1uF ~ 2.2uF.After safety electric capacity has inefficacy, electric shock can not be caused, do not jeopardize personal safety.
The contactor of different size is different with required holding force, and correspondingly, the operating current needed for its coil is also different, be generally between 5mA ~ 132mA, electric current when starting much smaller than it, similar contactor, its capacity is larger, and the capacity of the capacitor chosen is also larger.
Be worth special instruction: due to contactor not closed time, its iron core separates, i.e. dynamic iron core and the complete magnetic circuit of the not closed formation of electrostatic core, therefore static iron core needs larger magnetic force dynamic iron core could be attracted to come when starting, after closed, both define complete magnetic circuit, just do not need large magnetic force to maintain to be closed, magnetic force flows through coil by electric current and produces, and that is, only needs less electric current can maintain the closure state of contactor after closed.Therefore, conventional contactor or contactor for subsequent use powered after, total head alternating current is after rectification, become high-pressure pulsating direct current to start, after A.C. contactor is closed, cancel initiating signal, switch simultaneously and connect capacity voltage dropping circuit, after rectification, becoming low pressure Rectified alternating current for contactor coil provides the constant-current supply worked long hours, capacity voltage dropping circuit key element non-polar condenser is wattless component, itself does not consume active power, also do not generate heat, also load characteristic is converted simultaneously, inductive load by contactor coil transfers capacitive load to, avoid the generation of harmonic wave, reduce the harmonic pollution to electrical network.All eliminate exchanging the loss brought like this, the temperature rise of coil also falls too low thereupon, and noise also eliminates.
Starting circuit and reduction voltage circuit share a rectification circuit, be Rectified alternating current, then supply coil convert alternating current,
Its principle of capacity voltage dropping circuit is actually and utilizes capacitive reactance current limliting, flows through contactor coil and produces the attracting state that magnetic force carrys out control contactor, be described below its Current calculation formula by electric current.Such as, receiving the alternating voltage of 220V/50Hz as control voltage, when capacitance C is 1uF, if the employing available electric current of full-wave rectification (mean value) is: I (AV)=0.89 × V/Zc=0.89 × 220 × 2 × ∏ × f × C=0.89 × 220 × 2 × 3.14 × 50 × C=60000C=60000 × 0.000001=0.06A=60mA.
Described input selector switch is with the relay to few one group of normally open contact and normally closed interlock, is defined as input selective relay.
As the further improvement of such scheme, described conventional contactor and contactor for subsequent use comprise the iron core as magnetic circuit, and iron core is the pig iron or the steel plate formation of monoblock.Direct current is become from interchange because energy-saving circuit module controls power supply A.C. contactor, A.C. contactor can the mode of big current adhesive small area analysis sticking be worked, be exactly in fact A.C. contactor is used as D.C. contactor use, the scale of construction is relatively large because its coil is taller and thinner for Traditional DC contactor, and avoid the Traditional DC contactor using identical capacity, decrease the volume of contactor.The material that iron core for this reason in ac contactor electromagnetic system can use the pig iron or steel plate etc. more cheap replaces the silicon steel sheet that price is relatively high, and the short-circuited conducting sleeve eliminated on iron core, be effectively eliminated the intrinsic electromagnetic consumable of A.C. contactor " iron loss " and " copper loss " like this, interchange noise intrinsic when also eliminating operation; Contactor processing technology without short-circuited conducting sleeve decreases, and the various faults brought because of the damage of short-circuited conducting sleeve also eliminate, but also save material; Because contactor coil operating voltage during sticking and electric current significantly reduce, the wire diameter of coil is also corresponding to be reduced, and saves copper material.After this transformation, A.C. contactor not only significantly reduces the power consumption of electromagnetic system, decreases the consumption of material, simplifies technique, reduce cost, and low-down temperature rise also extends coil useful life, makes reliability and fail safe have qualitative leap.For the above A.C. contactor of rated current 400A, electric energy is up to more than 96%.
The wire diameter of the coil of described conventional contactor and contactor for subsequent use is the wire diameter 90% of same specification ac contactor coil.Because direct current sucting speed is faster than interchange sucting speed, electromagnetic attraction is stronger, therefore when keeping original working index, operating current can be relatively smaller, wire diameter for coil reduces and provides the foundation, in the constant situation of the number of turn of coil, be conducive to the volume reducing coil, save the consumption of copper material, saving resource, reduces cost.
The course of work is as follows: after powering on, when two-way power supply is all in normal condition, conventional contactor closes, powered to the load by conventional power supply, when conventional power supply generation decompression, phase shortage or under-voltage fault, control unit module sends to drive circuit module and drops into selector switch and send and forward contactor switching signal for subsequent use and contactor pickup signal to, and after contactor adhesive, contactor pickup signal is removed; Control unit module then sends contactor to drive circuit module and keeps pickup signal, realizes being powered to the load by stand-by power supply.When conventional power up is normal, control unit module sends to drive circuit module and drops into selector switch and send and forward conventional contactor switching signal and contactor pickup signal to, and after contactor adhesive, contactor pickup signal is removed; Control unit module then sends contactor to drive circuit module and keeps pickup signal, realizes being powered to the load by conventional power supply.
As from the foregoing, the present invention mainly contains following advantage: the simple science of circuit, reliability is high, power factor close to 1, power consumption is little; Not only good economy performance, cost performance are high, there is not the defect of CB level ATSE, do not have A.C. contactor distinctive noise during operation, easy to manufacture, and safeguard and also facilitate, maintenance cost is low, energy-conserving and environment-protective.PC level ATSE can be replaced to use, meet the social theme of current low-carbon economy, also meet the policy of current national energy-saving and emission-reduction, there is larger promotional value.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present invention.。
Fig. 2 is the energy-saving circuit schematic diagram of Fig. 1.
Main Reference label declaration: 1, instantaneous pressure start-up circuit 2, low pressure holding circuit 3, power selection switch 3.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the present invention and Advantageous Effects thereof are further elaborated.
Embodiment 1: see Fig. 1 ~ Fig. 2, the circuit for the automatic change-over electric appliance with duplicate of CC level comprises two A.C. contactors as conventional mains switch and Backup Power Switch, and controls the control circuit of two A.C. contactor work, wherein, the A.C. contactor being located at conventional mains switch end is defined as conventional contactor KM2, and the A.C. contactor being located at Backup Power Switch end is defined as contactor KM1 for subsequent use, wherein, control circuit comprises the working power module of powering for circuit system, as the control unit module of central data process, the power supply voltage signal detection module be connected with control unit module input respectively, human-computer interaction module, and contactor operating state detection module, the operating state display module be connected with control unit module output respectively, output alarm signal module, control the drive circuit module of follow-up energy-saving circuit module work, be connected with drive circuit module output and export the energy-saving circuit module that DC power supply drives A.C. contactor work, and the input selector switch K2 be connected with the output of energy-saving circuit module and drive circuit module respectively, drop into selector switch K2 and be provided with normally closed output and Chang Kai output, normally closed output is connected with the coil input end of conventional contactor KM2, often opens output and is connected with the coil input end of contactor KM1 for subsequent use, wherein, energy-saving circuit module is the direct current automatic switch-over circuit of exportable two kinds of voltages, the direct current that exportable guarantee A.C. contactor pick-up voltage is higher when A.C. contactor adhesive and A.C. contactor adhesive after completing exportable guarantee A.C. contactor keep the direct current that attracting state voltage is lower, contactor operating state detection module is connected with conventional contactor KM2 and contactor KM1 for subsequent use respectively.
Contactor operating state detection module is be located at the auxiliary contact on conventional contactor KM2 and contactor KM1 for subsequent use, the normally open contact linked with main contact that auxiliary contact is provided with and normally closed interlock.
What illustrate is, energy-saving circuit module is that A.C. contactor is controlled power supply from exchanging the circuit module becoming direct current, it comprises the power selection switch 3 selecting as A.C. contactor power supply to conventional power supply and stand-by power supply, the instantaneous pressure start-up circuit 1 that closed action made by A.C. contactor can be started, can low voltage low pressure holding circuit 2 that A.C. contactor is kept closed; The input of power selection switch 3 is connected with stand-by power supply with conventional power supply, the output of power selection switch 3 is connected with the input of instantaneous pressure start-up circuit 1 with low pressure holding circuit 2 respectively, and instantaneous pressure start-up circuit 1 is connected with input selector switch K2 input with the output of low pressure holding circuit 2.
Power selection switch 3 is for being provided with the power supply selective relay K3 of two groups of normally closed normally open contacts, and its normally closed interlock is connected with conventional power supply, and its normally open contact is connected with stand-by power supply.
Particularly, see Fig. 2, instantaneous pressure start-up circuit 1 comprises high-voltage rectifier bridge BG2, and controls the starting relay K1 of instantaneous pressure start-up circuit 1 break-make; Low pressure holding circuit 2 comprises the capacity voltage dropping circuit, lower pressure rectifier bridge, the high-low pressure isolating diode D3 that sequentially connect; Wherein, capacity voltage dropping circuit is by forming by the non-polar condenser C1 of resistance to power frequency high voltage and the discharge resistance R1 in parallel with this non-polar condenser C1; The common port of starting relay K1 is connected with first common port of power supply selective relay K3, the input of high-voltage rectifier bridge BG2 is connected with second common port of power supply selective relay K3 and the output of often opening of starting relay K1 respectively, and the input of capacity voltage dropping circuit is connected with second common port of power supply selective relay K3 and the normally closed output of starting relay K1 respectively; After high-voltage rectifier bridge BG2 output is in parallel with aforementioned high-low pressure isolating diode D3, be connected with the common port dropping into selector switch K2 by thermistor Rt1.
As important decompression device, non-polar condenser C1 is CBB electric capacity, and its withstand voltage is 240V ~ 1000V, and its capacity is 0.1uF ~ 2.2uF.Or non-polar condenser C1 is safety electric capacity, its withstand voltage is 240V ~ 600V, and its capacity is 0.1uF ~ 2.2uF.Safety electric capacity is large due to allowance, when selecting, can consider the tolerances of withstand voltage, avoid choosing the excessive area of too high withstand voltage busy line plate.In general, main switch contact capacity is larger, and the capacity of the capacitor selected is also larger.
Particularly, for the ATSE being 9A ~ 12A with main switch contact, rated current can be selected to be the CJT1 Series AC Contactor of 9A ~ 12A; If during operating voltage 220V: non-polar condenser C1 can select the CBB electric capacity that withstand voltage is 400V, capacity is 0.33uF; Or the safety electric capacity that withstand voltage is 240V, capacity is 0.33uF can be selected.If during operating voltage 380V: non-polar condenser C1 can select the CBB electric capacity that withstand voltage is 630V, capacity is 0.15uF; Or the safety electric capacity that withstand voltage is 400V, capacity is 0.15uF can be selected.
Dropping into selector switch K2 is with the relay to few one group of normally open contact and normally closed interlock, is defined as and drops into selective relay K2.
Conventional contactor KM2 and contactor KM1 for subsequent use comprises the iron core as magnetic circuit, and iron core is the pig iron or the steel plate formation of monoblock.
The wire diameter of the coil of conventional contactor KM2 and contactor KM1 for subsequent use is the wire diameter 90% of same specification ac contactor coil.
Embodiment 2: see Fig. 2, the present embodiment is substantially the same manner as Example 1, difference is mainly the coupling of main switch contact capacity and capacity voltage dropping circuit: particularly, for the ATSE being 16A ~ 25A with main switch contact, rated current can be selected to be the CJT1 Series AC Contactor of 9A ~ 12A; If during operating voltage 220V: non-polar condenser C1 can select the CBB electric capacity that withstand voltage is 400V, capacity is 0.47uF; Or the safety electric capacity that withstand voltage is 240V, capacity is 0.47uF can be selected.If during operating voltage 380V: non-polar condenser C1 can select the CBB electric capacity that withstand voltage is 630V, capacity is 0.22uF; Or the safety electric capacity that withstand voltage is 400V, capacity is 0.22uF can be selected.
Book and specific embodiment do not form any restriction to the present invention according to the above description; the present invention is not limited to embodiment disclosed and described above; to amendments more of the present invention and distortion, also should fall in the protection range of claim of the present invention.
Claims (10)
1. for a circuit for the automatic change-over electric appliance with duplicate of CC level, comprise two A.C. contactors as conventional mains switch and Backup Power Switch, and control the control circuit of two A.C. contactor work, wherein, the A.C. contactor being located at conventional mains switch end is defined as conventional contactor, and the A.C. contactor being located at Backup Power Switch end is defined as contactor for subsequent use, it is characterized in that: described control circuit comprises the working power module of powering for circuit system, as the control unit module of central data process, the power supply voltage signal detection module be connected with control unit module input respectively, human-computer interaction module, and contactor operating state detection module, the operating state display module be connected with control unit module output respectively, output alarm signal module, control the drive circuit module of follow-up energy-saving circuit module work, be connected with drive circuit module output and export the energy-saving circuit module that DC power supply drives A.C. contactor work, and the input selector switch be connected with the output of energy-saving circuit module and drive circuit module respectively, drop into selector switch and be provided with normally closed output and Chang Kai output, normally closed output is connected with the coil input end of conventional contactor, often opens output and is connected with the coil input end of contactor for subsequent use, wherein, energy-saving circuit module is the direct current automatic switch-over circuit of exportable two kinds of voltages, the direct current that exportable guarantee A.C. contactor pick-up voltage is higher when A.C. contactor adhesive and A.C. contactor adhesive after completing exportable guarantee A.C. contactor keep the direct current that attracting state voltage is lower, contactor operating state detection module is connected with conventional contactor and contactor for subsequent use respectively.
2. as claimed in claim 1 for the circuit of the automatic change-over electric appliance with duplicate of CC level, it is characterized in that: described contactor operating state detection module is be located at the auxiliary contact on conventional contactor and contactor for subsequent use, the normally open contact linked with main contact that auxiliary contact is provided with and normally closed interlock.
3. as claimed in claim 2 for the circuit of the automatic change-over electric appliance with duplicate of CC level, it is characterized in that: described energy-saving circuit module is that A.C. contactor is controlled power supply from exchanging the circuit module becoming direct current, it comprises the power selection switch selecting as A.C. contactor power supply to conventional power supply and stand-by power supply, the instantaneous pressure start-up circuit that closed action made by A.C. contactor can be started, can low voltage low pressure holding circuit that A.C. contactor is kept closed; The input of power selection switch is connected with stand-by power supply with conventional power supply, the output of power selection switch is connected with the input of instantaneous pressure start-up circuit with low pressure holding circuit respectively, and instantaneous pressure start-up circuit is connected with input selector switch input with the output of low pressure holding circuit.
4. as claimed in claim 3 for CC level, it is characterized in that: it is characterized in that: described power selection switch is the power supply selective relay being provided with two groups of normally closed normally open contacts, and its normally closed interlock is connected with conventional power supply, and its normally open contact is connected with stand-by power supply.
5. as claimed in claim 4 for the circuit of the automatic change-over electric appliance with duplicate of CC level, it is characterized in that: described instantaneous pressure start-up circuit comprises high-voltage rectifier bridge, and control the starting relay of instantaneous pressure start-up circuit break-make; Low pressure holding circuit comprises capacity voltage dropping circuit, lower pressure rectifier bridge, the high-low pressure isolating diode of sequentially connecting; Wherein, capacity voltage dropping circuit is by can the non-polar condenser of resistance to power frequency high voltage and the discharge resistance in parallel with this non-polar condenser form; The common port of starting relay is connected with the first common port of power supply selective relay, the input of high-voltage rectifier bridge is connected with the second common port of power supply selective relay and the output of often opening of starting relay respectively, and the input of capacity voltage dropping circuit is connected with the second common port of power supply selective relay and the normally closed output of starting relay respectively; After high-voltage rectifier bridge output is in parallel with aforementioned high-low pressure isolating diode, be connected with the common port dropping into selector switch by thermistor.
6., as claimed in claim 5 for the circuit of the automatic change-over electric appliance with duplicate of CC level, it is characterized in that: described non-polar condenser is CBB electric capacity, its withstand voltage is 240V ~ 1000V, and its capacity is 0.1uF ~ 2.2uF.
7., as claimed in claim 5 for the circuit of the automatic change-over electric appliance with duplicate of CC level, it is characterized in that: described non-polar condenser is safety electric capacity, its withstand voltage is 240V ~ 600V, and its capacity is 0.1uF ~ 2.2uF.
8. the circuit of the automatic change-over electric appliance with duplicate for CC level as described in any one of claim 1 ~ 7, is characterized in that: described input selector switch is with the relay to few one group of normally open contact and normally closed interlock, is defined as input selective relay.
9. as claimed in claim 8 for the circuit of the automatic change-over electric appliance with duplicate of CC level, it is characterized in that: described conventional contactor and contactor for subsequent use comprise the iron core as magnetic circuit, iron core is the pig iron or the steel plate formation of monoblock.
10., as claimed in claim 9 for the circuit of the automatic change-over electric appliance with duplicate of CC level, it is characterized in that: the wire diameter of the coil of described conventional contactor and contactor for subsequent use is the wire diameter 90% of same specification ac contactor coil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510156943.8A CN104716738B (en) | 2015-04-04 | 2015-04-04 | A kind of circuit for the automatic change-over electric appliance with duplicate for being used for CC grades |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510156943.8A CN104716738B (en) | 2015-04-04 | 2015-04-04 | A kind of circuit for the automatic change-over electric appliance with duplicate for being used for CC grades |
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| CN104716738A true CN104716738A (en) | 2015-06-17 |
| CN104716738B CN104716738B (en) | 2017-09-26 |
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| CN201510156943.8A Expired - Fee Related CN104716738B (en) | 2015-04-04 | 2015-04-04 | A kind of circuit for the automatic change-over electric appliance with duplicate for being used for CC grades |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153989A (en) * | 2016-07-26 | 2016-11-23 | 桂林电力电容器有限责任公司 | A kind of charged wire-changing device and How It Works |
| CN108964246A (en) * | 2018-07-25 | 2018-12-07 | 郑州云海信息技术有限公司 | A kind of method for switching main and standby power supplies and system of test equipment |
| TWI691135B (en) * | 2019-02-25 | 2020-04-11 | 陳錫瑜 | Control display integrated device with display self-tripping power status |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201813219U (en) * | 2010-10-18 | 2011-04-27 | 李彬斌 | Equipment running monitoring device for unmanned duty room |
| CN202150734U (en) * | 2011-07-05 | 2012-02-22 | 常熟开关制造有限公司(原常熟开关厂） | Controller of power transfer switch |
| CN202183634U (en) * | 2011-07-27 | 2012-04-04 | 常熟开关制造有限公司(原常熟开关厂） | Controller of change-over switch |
| CN202888081U (en) * | 2012-08-27 | 2013-04-17 | 关平 | AC contactor intelligent control apparatus with energy saving effect |
| CN103683483A (en) * | 2013-12-25 | 2014-03-26 | 施耐德万高（天津）电气设备有限公司 | Controller applicable to ATSE (Automatic Transfer Switching Equipment) with multiple voltage level power supplies |
-
2015
- 2015-04-04 CN CN201510156943.8A patent/CN104716738B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201813219U (en) * | 2010-10-18 | 2011-04-27 | 李彬斌 | Equipment running monitoring device for unmanned duty room |
| CN202150734U (en) * | 2011-07-05 | 2012-02-22 | 常熟开关制造有限公司(原常熟开关厂） | Controller of power transfer switch |
| CN202183634U (en) * | 2011-07-27 | 2012-04-04 | 常熟开关制造有限公司(原常熟开关厂） | Controller of change-over switch |
| CN202888081U (en) * | 2012-08-27 | 2013-04-17 | 关平 | AC contactor intelligent control apparatus with energy saving effect |
| CN103683483A (en) * | 2013-12-25 | 2014-03-26 | 施耐德万高（天津）电气设备有限公司 | Controller applicable to ATSE (Automatic Transfer Switching Equipment) with multiple voltage level power supplies |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153989A (en) * | 2016-07-26 | 2016-11-23 | 桂林电力电容器有限责任公司 | A kind of charged wire-changing device and How It Works |
| CN106153989B (en) * | 2016-07-26 | 2022-12-06 | 桂林电力电容器有限责任公司 | Live line changing device and operation method |
| CN108964246A (en) * | 2018-07-25 | 2018-12-07 | 郑州云海信息技术有限公司 | A kind of method for switching main and standby power supplies and system of test equipment |
| TWI691135B (en) * | 2019-02-25 | 2020-04-11 | 陳錫瑜 | Control display integrated device with display self-tripping power status |
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|---|---|
| CN104716738B (en) | 2017-09-26 |
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