CN201839218U - Low-power consumption three-phase power circuit and application thereof - Google Patents
Low-power consumption three-phase power circuit and application thereof Download PDFInfo
- Publication number
- CN201839218U CN201839218U CN2010205973298U CN201020597329U CN201839218U CN 201839218 U CN201839218 U CN 201839218U CN 2010205973298 U CN2010205973298 U CN 2010205973298U CN 201020597329 U CN201020597329 U CN 201020597329U CN 201839218 U CN201839218 U CN 201839218U
- Authority
- CN
- China
- Prior art keywords
- circuit
- residual current
- pin
- resistance
- capacitor
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Rectifiers (AREA)
Abstract
The utility model belongs to the technical field of electrical engineering and relates to a three-phase power circuit. The three-phase power circuit comprises a resistance-capacitance voltage reducing circuit, a rectifier circuit and a voltage stabilizing circuit and is characterized in that after being connected with the resistance-capacitance voltage reducing circuit and the rectifier circuit in series, three output ends of a three-phase power source are combined to be connected with an input end of the voltage stabilizing circuit, and an output end of the voltage stabilizing circuit is the final output end of the low-power consumption three-phase power circuit. The low-power consumption three-phase power circuit converts the input three-phase alternating current into stable low-power consumption direct current low voltage power source through resistance-capacitance voltage reduction, current rectification and voltage stabilization sequentially. Therefore, the low-power consumption three-phase power circuit has the advantages of reducing power consumption of the circuit effectively, having high stability and reliability of voltage, being wide in range of working voltage and the like. Besides, the low-power consumption three-phase power circuit guarantees stable output voltage under the circumstance of lacking any phase of the three-phase input power source through using three-phase power source as an input source and matching with voltage rectifier circuit connected in parallel.
Description
Technical field
The utility model belongs to electrical technology field; relate to residual current protecting technology in the low-voltage circuit breaker; a kind of specifically three-phase power circuit and used the residual current protecting and the control circuit of this three-phase power circuit, described residual current protecting and control circuit are used for controlling or adjust correlation technique parameters such as the specified residual current of band residual current protecting action breaker and specified residue electric leakage operate time.
Background technology
Along with carrying out in a deep going way of electric power network technique transformation, people are strict day by day to the requirement of Electrical Safety, band residual current protecting action breaker has obtained using widely in city, farming two nets, at present, most of two-phase or the single phase poaer supply circuit of adopting of band residual current protecting action breaker realized the residual current protecting function on the market, the step-down mode of its power circuit adopts after the first rectification resistance step-down mode of voltage stabilizing more basically, and the scope of, voltage stability difference big based on the circuit power consumption of this mode and operating voltage is narrow; Another part then adopts the circuit of three phase mains to realize the residual current protecting function, and the step-down mode of its power circuit adopts after the first rectification resistance step-down mode of voltage stabilizing again; Or the multistage step-down of the three-terminal voltage-stabilizing pipe mode of voltage stabilizing again after the first rectification, wherein, based on the former circuit cost is low but power consumption is big, voltage stability is very poor, based on the latter's circuit voltage is stable but power consumption is big and cost is very high.
Summary of the invention
The purpose of this utility model is to solve existing band residual current protecting action breaker chip power circuit above shortcomings, aims to provide the low-power consumption three-phase power circuit that a kind of cost is lower, voltage stability is high, operating voltage range is wide.
Another purpose of the present utility model is a kind of concrete application that discloses above-mentioned low-power consumption three-phase power circuit; aim to provide a kind of response speed is fast, operating voltage range is wide residual current protecting and control circuit; be used for controlling or adjust correlation technique parameters such as the specified residual current of band residual current protecting action breaker and specified residue electric leakage operate time; and guarantee to appoint under the situation that lacks a phase at three-phase circuit, circuit still can operate as normal.
Realize that the technical solution that first purpose of the utility model is adopted is: a kind of low-power consumption three-phase power circuit, comprise resistance-capacitance depressurization circuit, rectification circuit and voltage stabilizing circuit, it is characterized in that, three inputs of three phase mains are contacted respectively behind resistance-capacitance depressurization circuit, the rectification circuit, merge and insert the voltage stabilizing circuit input, the output of described voltage stabilizing circuit is the final output of this low-power consumption three-phase power circuit.
In the foregoing circuit structure, described resistance-capacitance depressurization circuit is made up of three and line road, wherein contact in circuit electric capacity and a resistance.The two other line construction is identical, two resistance of all connecting.
Described rectification circuit can be common three-phase bridge rectifier circuit, also can be other any rectification circuit or element or integrated chip with three phase rectifier function in the prior art.
Described voltage stabilizing circuit can be common any voltage stabilizing circuit, in order to reach voltage regulation result preferably, avoids cost too high again, and is the most suitable with the two-stage voltage stabilizing circuit.Voltage stabilizing element can adopt voltage stabilizing didoe, three-terminal voltage-stabilizing pipe or TVS pipe.
The disclosed low-power consumption three-phase power circuit of the utility model adopts the mode of first resistance-capacitance depressurization, rectification then, last voltage stabilizing again to change the three-phase alternating current of importing into stable low-power Dc low voltage power supply.Because resistance-capacitance depressurization has limited the electric current in the circuit, effectively reduces the power consumption of circuit.And, make circuit also have the stability and the reliability height of voltage by the back method for stabilizing voltage, characteristics such as the scope of operating voltage is wide.Prior, the utility model adopts three phase mains as the input power supply, and cooperates parallel step-down rectifying circuit, has realized that circuit still can guarantee the stable of output voltage lacking under arbitrary situation of importing power supply mutually.In addition, in the low-power consumption three-phase power circuit of the present utility model, simple in structure, component number is few, and is conventional components and parts, so cost is lower relatively.
In low-power consumption three-phase power circuit described in the utility model, in order to prevent to occur the moment surge voltage in the circuit, burn components and parts, the piezo-resistance of can also between three every ends of input of three phase mains, connecting.Described piezo-resistance can in time absorb the moment surge voltage that occurs in the circuit, and then effective protective circuit safety.
Realize that second technical solution that purpose adopted of the utility model is: a kind of residual current protecting and control circuit comprise three-phase power circuit, residual current sample circuit, residual current release operating circuit, specified residual current regulating circuit and specified residue electric leakage regulating circuit operate time.The power input of the described residual current sample circuit of output termination of described three-phase power circuit, the residual current acting control signal output ends of described residual current sample circuit connects the circuits for triggering input of described residual current release operating circuit; Described specified residual current regulating circuit is connected in parallel in the residual current signals collecting loop of residual current sample circuit, controlling the current value in this loop, and then realizes that specified residual current regulates; Described specified residue electric leakage regulating circuit operate time is connected in parallel in the electric-leakage detection circuit of residual current sample circuit, change the output time of delayed control signal by the size that changes capacitance, finally realize the purpose that specified residue electric leakage is regulated operate time.
In above-mentioned residual current protecting and control circuit, described three-phase power circuit is the disclosed in front low-power consumption three-phase power circuit of the utility model;
Described residual current sample circuit can be in the prior art any have sampling in the major loop residual current and export the circuit that control signal is impelled the work of residual current release operating circuit, this circuit should comprise residual current input input circuit, signal operation amplifying circuit, electric-leakage detection circuit, residual current acting control signal output circuit at least, these four circuit according to from signals collecting through signal amplify, input is at last to the mutual UNICOM of signal transitive relation of signal output.Its course of work is: described residual current signals collecting loop is by the residual current in the zero-sequence transformer collection major loop, export the residual current signal amplification circuit then to, export to electric-leakage detection circuit through the residual current signal of residual current signal amplification circuit amplification and judge, judge whether the residual current in the major loop reaches the residual current acting requirement.When the residual current in the major loop is when reaching residual current acting and requiring, signal output apparatus output residual current acting control signal triggers residual current release operating circuit.Wherein, the function of described residual current signal amplification circuit, described electric-leakage detection circuit, residual current acting control signal output circuit, also can adopt to have the peripheral defeated circuit realization that helps of the various integrated chips cooperations that are built-in with discharge circuit, detection of electrical leakage module, as 54133 chips, 54134 chips.
Described residual current release operating circuit can be any circuit that triggers and disconnect major loop under the residual current acting control signal.But, because residual current release operating voltage is higher and when action electric current big, easily residual current protecting and control circuit are exerted an influence, so residual current release operating circuit of the present utility model preferentially adopts independently power circuit.The independent current source circuit of described residual current release operating circuit can be various power circuits, as two-phase power supply circuit, three-phase power circuit etc.Wherein, adopt the advantage of three-phase power circuit to be, still can operate as normal at the situation release that lacks a phase power supply arbitrarily.
Disclosed residual current protecting of the utility model and control circuit by the step-down of three phase mains elder generation after rectification voltage stabilizing circuit again, stable low-power Dc low voltage power supply is provided for the residual current sample circuit; The residual current acquisition circuit with the residual current signal sampling in the circuit after, by operational amplification circuit, signal is amplified.When the residual electricity flow valuve satisfies the dropout required value, residual current sample circuit output control voltage signal triggers the conducting control device conducting of residual current release actuating circuit, the action of residual current release, thus product is threaded off.On the one hand, effectively brought into play the low-power consumption advantage of the disclosed low-power consumption three-phase power circuit in the utility model front; On the other hand, be combined in the employing of independent three-phase power circuit in the residual current release actuating circuit, guaranteed conscientiously, under the feelings that lack each power supply, the residual current protecting function normally realizes.
Description of drawings
Fig. 1 is existing three end buck three-phase power circuit structure charts.
Fig. 2 is existing resistance drop pressure type three-phase power circuit structure chart.
Fig. 3 is the structure chart residual current sampling of the utility model resistance-capacitance depressurization formula three-phase power circuit and chip and peripheral circuit thereof.
Fig. 4 is residual current protecting of the present utility model and control circuit operation principle block diagram.
Fig. 5 is residual current protecting of the present utility model and control circuit structure.
Fig. 6 is a residual current sample circuit structure chart in residual current protecting of the present utility model and the control circuit.
Fig. 7 is a residual current release actuating circuit structure chart in residual current protecting of the present utility model and the control circuit.
Fig. 8 is a specified residual current regulating circuit structure chart in residual current protecting of the present utility model and the control circuit.
Fig. 9 is specified residue electric leakage regulating circuit structure chart operate time in residual current protecting of the present utility model and the control circuit.
Embodiment
Below, existing in conjunction with above-mentioned nine accompanying drawings, be described by a kind of concrete possible example the claimed technical scheme of the utility model, the disclosed low-power consumption three-phase power circuit of the utility model and residual current protecting and control circuit are described further.
With reference to Fig. 1,2, existing three end buck three-phase power circuits mainly comprise parallel rectification circuit, three grades of reduction voltage circuits and voltage stabilizing circuit three parts.Its process is after three phase mains is carried out rectification respectively, export successively through three grades of step-downs of three-terminal voltage-stabilizing pipe, and then through voltage stabilizing.To on great achievement degree very, improve the cost of circuit in the use of two three-terminal voltage-stabilizing pipes of sort circuit.Resistance drop pressure type three-phase power circuit then replaces with the parallel resistance reduction voltage circuit with three grades of reduction voltage circuits in the three end buck three-phase power circuits.Though reduced cost, increased energy consumption greatly.
Fig. 3 is a kind of specific implementation form of the described low-power consumption three-phase power circuit of utility model, and wherein, three phase mains per two alternate piezo-resistance UR1, UR2, the UR3 of connecting respectively are in order to absorb the moment surge voltage that occurs in the circuit, protective circuit safety; Three phase mains connect the respectively first resistance-capacitance depressurization circuit and the first rectification circuit T3, the second resistance-capacitance depressurization circuit and the second rectification circuit T4, the 3rd resistance-capacitance depressurization circuit and the 3rd rectification circuit T5.The described first resistance-capacitance depressurization circuit comprises three-line in parallel, wherein be in series with capacitor C 26 and resistance R 26 in a circuit, difference serial resistance R35, resistance R 36 and resistance R 37, resistance R 38 in the two other circuit, described capacitor C 26 plays the step-down metering function in circuit, 26 metering functions of resistance R, resistance R 35 ~ R38 is that capacitor C 26 discharges are used; The described second resistance-capacitance depressurization circuit is made up of three parallel lines equally, wherein is in series with capacitor C 27 and resistance R 25 in a circuit, difference serial resistance R31, resistance R 32 and resistance R 33, resistance R 34 in the two other circuit; Described the 3rd resistance-capacitance depressurization circuit also is made up of three parallel lines, wherein is in series with capacitor C 28 and resistance R 24 in a circuit, difference serial resistance R27, resistance R 28 and resistance R 29, resistance R 30 in the two other circuit; The output of the described first rectification circuit T3, the second rectification circuit T4, the 3rd rectification circuit T5 connects the input of stabilizing circuit simultaneously.Described voltage stabilizing circuit comprises prime voltage stabilizing circuit that is composed in parallel by voltage stabilizing didoe VZ2 and filter capacitor C14 and the back level voltage stabilizing circuit that is composed in parallel by voltage stabilizing didoe VZ3 and filter capacitor C13.Be in series with resistance R 9 between described prime voltage stabilizing circuit and the back level voltage stabilizing circuit.
Cross together through resistance-capacitance depressurization and the three phase mains that carries out bridge rectifier by rectification circuit T3, T4, T5 respectively,, thereby obtain the small-power low-voltage dc power supply more successively through after prime voltage-stabiliser tube circuit, the back level voltage-stabiliser tube circuit two-stage voltage stabilizing; Lacking under the situation of a phase power supply arbitrarily, this circuit can both obtain reliable and stable Dc low voltage power supply, thereby guarantees the operate as normal of product.
With reference to Fig. 4, disclosed residual current protecting of the utility model and control circuit, the stabilized power supply lower wattage power supply is provided for special-purpose 54133 or 54134 chips by low-power consumption three-phase power circuit of the present utility model, makes chip and peripheral circuit thereof residual current sampling and amplification computing reliability service; Adjust the parameter of 54133 or 54134 chips output by specified residual current and specified residue electric leakage regulating circuit operate time, thereby adjust specified residual current and specified residue electric leakage operate time; Zero-sequence transformer with the residual current signal sampling in the circuit after, the input special chip, by 54133 or 54134 chips and peripheral circuit comparison operation thereof, when the residual electricity flow valuve satisfies the dropout required value, chip 54133 or the output of 54134 the 8th pin, trigger controllable silicon ST1, ST2 conducting, make another road offer the rectified three-phase circuit work of residual current release power supply, thereby product is threaded off.The circuit diagram of a kind of specific implementation the utility model residual current protecting and control circuit as shown in Figure 5; from Fig. 5, be not difficult to find out disclosed residual current protecting of the utility model and control circuit, mainly comprise three-phase power circuit, residual current sample circuit, residual current release operating circuit, specified residual current regulating circuit and specified residue electric leakage regulating circuit operate time.
With reference to Fig. 6, this figure has given an instantiation of residual current sample circuit described in the utility model.In this embodiment, described residual current input input circuit comprises zero-sequence transformer and residual current signal input circuit, described residual current signal input circuit is by capacitor C 12, capacitor C 19, resistance R 17, resistance R 13, resistance R 12, diode D13, diode D14 forms, diode D13 wherein, diode D14, capacitor C 12 threes connecting to neutral preface in parallel instrument transformer two ends, diode D13 is opposite with diode D14 polarity, one termination zero-sequence transformer, one end of capacitor C 19, the resistance R 17 1 termination zero-sequence transformer other ends, one end of resistance R 12, one end of resistance R 13, the other end of capacitor C 19, the other end of resistance R 17 is coupled to each other, another termination signal operation amplifying circuit of the other end of resistance R 12 and resistance R 13.The major function of described residual current signal input circuit is that the residual current signal that zero-sequence transformer is detected carries out voltage transitions, anti-interference process and overvoltage protection;
This example adopts special-purpose 16 pin integrated chip IC to cooperate peripheral fail computing amplification, the detection of electrical leakage that helps in the circuit realization residual current sample circuit, the output that reaches control signal in addition.1 ~ 3 pin of described integrated chip IC, 16 pin are power circuit, and wherein 1 pin is a grounding leg, directly ground connection, 2 pin are the reference current pin, ground connection behind the connecting resistance R10 is the peripheral biasing resistor of chip IC inside constant-current source, is used for producing the DC power supply that inner detection of electrical leakage module is used; 3 pin are the voltage stabilizing output pin, connect ground connection behind the filter capacitor C6, and 16 pin are positive source, connect the cathode output end of three-phase power circuit; 4 ~ 7,9,10 pin of described integrated chip IC are detection of electrical leakage function pin, wherein 4 pin are reset terminal, connect capacitor C 7 back ground connection, 5 pin, 6 pin are the integrating capacitor pin, connect capacitor C 8, capacitor C 9 back ground connection respectively, 7 pin are the time-delay output pin, residual current acting time conditioned circuit in the map interlinking 9, size by the electric capacity between control and the earth point is controlled the residual current acting time, 9 pin are reference voltage pin connecting to neutral preface instrument transformer one end, 10 pin are that residual current detects input pin, the other end of connecting resistance R13 behind the connecting resistance R14; 8 pin of described integrated chip IC are the driving voltage output pin, connect the circuits for triggering input of residual current release operating circuit, with the break-make of control residual current release circuit; 11 ~ 15 pin of described integrated chip IC are discharge circuit, wherein 12 pin, 14 pin are the compensation pin, connect capacitor C 16, the capacitor C 18 back connecting resistance R12 other ends, resistance R 13 other ends respectively, 13 pin and 15 pin are the amplifier input pin, the other end of 13 pin connecting resistance R12 wherein, connecting to neutral preface instrument transformer one end behind the 15 pin connecting resistance R11,11 pin are the amplifier output pin, the other end of connecting resistance R13 is between 11 pin and 13 pin, between 13 pin and 14 pin, be serially connected with capacitor C 17, capacitor C 16, capacitor C 15 respectively between 14 pin and 15 pin;
In this example, described resistance R 11 ~ R14, capacitor C 15 ~ C18 are the periphery biasing of the inner amplifying circuit of chip IC; The residual current signal is undertaken after signal amplifies by amplifying circuit after the residual current input signal channel is handled, and imports the detection of electrical leakage module of chip IC inside jointly with the reference voltage of chip 9 pin; When the residual electricity flow valuve of calculating when the detection of electrical leakage module reached specified residue operating current, 8 pin output voltages of chip made the controllable silicon conducting, the action of residual current release.
With reference to Fig. 7, what this figure showed is a concrete possible example of residual current release operating circuit described in the utility model, in this example, adopt independently that three-phase power circuit provides reliable DC power supply for the residual current release, can guarantee so also can operate as normal in the situation that lacks a phase power supply arbitrarily; This routine residual current release operating circuit comprises dropout power circuit, thyristor gating circuit, release, described dropout power circuit is made of the three-phase bridge rectifier circuit of input termination three-phase alternating-current supply, described thyristor gating circuit is made of two-stage controllable silicon and anti-interference capacitor C1, divider resistance R1, R2, R3, the control of one-level controllable silicon ST2 circuits for triggering input very wherein, negative pole connects dropout power circuit negative pole after meeting diode D13, and positive pole connects the end of secondary controllable silicon negative pole, anti-interference capacitor C1, the end of divider resistance R3; Another termination secondary SCR control utmost point of the other end of anti-interference capacitor C1 and divider resistance R3, divider resistance R1 one end, another termination divider resistance of divider resistance R1 R2 one end, the divider resistance R2 other end and secondary controllable silicon positive pole connect trip coil one end; Another termination dropout power circuit positive pole of trip coil.Diode D6 of described release two ends reverse parallel connection.
Three-phase alternating-current supply carries out rectification by the three-phase bridge rectification bridge of being made up of diode D7 ~ D12, direct current after the rectification anodal by trip coil after thyristor gating circuit to the direct current negative pole, release two ends reverse parallel connection diode D6 is used to prevent by the release action back trip coil outage reverse induction high pressure that moment produced; One-level controllable silicon ST2 is directly by the 8th foot control system of 54133 or 54134 chips, and described resistance R 1 ~ R3 carries out dividing potential drop after one-level controllable silicon ST2 triggering and conducting, and the direct voltage that makes R3 go up formation triggers second level controllable silicon ST1, thereby makes the release circuit turn-on.
With reference to Fig. 8, described specified residual current regulating circuit comprises four resistance and four rotary switch K1, in described four resistance, is connected in respectively after resistance R 42, resistance R 43, resistance R 44 parallel connections on three contacts of switching tube.Resistance R 41 is connected in parallel in the loop, selects and its parallel resistor R42 ~ R44 by four rotary switches, thereby changes resistance value in the loop, reaches the purpose of the specified residual electricity flow valuve of adjusting product.In this example, described four rotary switch K1 can also adopt the selector switch of other type, as toggle switch, and toggle switch, figure place also not necessarily adopts four.
With reference to Fig. 9, described specified residue electric leakage regulating circuit operate time comprises four electric capacity and four rotary switch K2, in described four electric capacity, is connected in respectively after capacitor C 32, capacitor C 33, capacitor C 34 parallel connections on three contacts of four rotary switches.Capacitor C 31 is connected in parallel in the loop, selects the capacitor C 32 ~ C34 in parallel with it by four rotary switches, thereby changes the capacity of electric capacity in the loop, reaches the purpose of the specified residual current acting time value of adjusting product.In this example, described four rotary switch K2 can also adopt the selector switch of other type, as toggle switch, and toggle switch, figure place also not necessarily adopts four.
Claims (17)
1. low-power consumption three-phase power circuit, comprise resistance-capacitance depressurization circuit, rectification circuit and voltage stabilizing circuit, it is characterized in that, three inputs of three phase mains are contacted respectively behind resistance-capacitance depressurization circuit, the rectification circuit, merge and insert the voltage stabilizing circuit input, the output of described voltage stabilizing circuit is the final output of this low-power consumption three-phase power circuit.
2. low-power consumption three-phase power circuit according to claim 1 is characterized in that, described resistance-capacitance depressurization circuit is made up of three and line road, wherein connect in circuit electric capacity and a resistance, and the two other line construction is identical, all is in series with two resistance.
3. low-power consumption three-phase power circuit according to claim 1 is characterized in that, described rectification circuit is a bridge rectifier.
4. low-power consumption three-phase power circuit according to claim 1 is characterized in that, described voltage stabilizing circuit is made up of forward and backward two-stage voltage stabilizing circuit, is in series with divider resistance between the described forward and backward two-stage voltage stabilizing circuit.
5. low-power consumption three-phase power circuit according to claim 4 is characterized in that, described forward and backward two-stage voltage stabilizing circuit structure is identical, composes in parallel by voltage stabilizing didoe and filter capacitor.
6. according to each described low-power consumption three-phase power circuit among the claim 1-5, it is characterized in that, be in series with a piezo-resistance between every two ends in three inputs of three phase mains.
7. residual current protecting and control circuit, comprise three-phase power circuit, residual current sample circuit, residual current release operating circuit, specified residual current regulating circuit and specified residual current acting time adjustment circuit, it is characterized in that, described three-phase power circuit is each described low-power consumption three-phase power circuit among the claim 1-6, the power input of the described residual current sample circuit of output termination of described three-phase power circuit; The residual current acting control signal output ends of described residual current sample circuit connects the circuits for triggering input of described residual current release operating circuit; Described specified residual current regulating circuit also is connected in the residual current signals collecting loop of residual current sample circuit; Described specified residual current acting time adjustment circuit is connected in parallel in the electric-leakage detection circuit of residual current sample circuit.
8. residual current protecting according to claim 7 and control circuit, it is characterized in that described residual current sample circuit mainly is made up of residual current input input circuit, signal operation amplifying circuit, electric-leakage detection circuit, residual current acting control signal output circuit; Described residual current input input circuit, signal operation amplifying circuit, electric-leakage detection circuit, residual current acting control signal output circuit according to from signals collecting through signal amplify, input is at last to the mutual UNICOM of signal transitive relation of signal output.
9. residual current protecting according to claim 8 and control circuit; it is characterized in that; described residual current input input circuit comprises zero-sequence transformer and residual current signal input circuit; described residual current signal input circuit is by capacitor C 12; capacitor C 19; resistance R 17; resistance R 13; resistance R 12; diode D13; diode D14 forms; diode D13 wherein; diode D14; capacitor C 12 threes connecting to neutral preface in parallel instrument transformer two ends; diode D13 is opposite with diode D14 polarity; one termination zero-sequence transformer, one end of capacitor C 19; the resistance R 17 1 termination zero-sequence transformer other ends; one end of resistance R 12; one end of resistance R 13; the other end of capacitor C 19; the other end of resistance R 17 is coupled to each other, another termination signal operation amplifying circuit of the other end of resistance R 12 and resistance R 13.
10. residual current protecting according to claim 9 and control circuit, it is characterized in that, described residual current sample circuit is made up of residual current input input circuit, 16 pin integrated chip IC and chip peripheral circuit, 1 ~ 3,16 pin of described integrated chip IC are power circuit, wherein 1 pin is a grounding leg, direct ground connection, 2 pin are the reference current pin, ground connection behind the connecting resistance R10, be the peripheral biasing resistor of chip IC inside constant-current source, be used for producing the DC power supply that inner detection of electrical leakage module is used; 3 pin are the voltage stabilizing output pin, connect ground connection behind the filter capacitor C6, and 16 pin are positive source, connect the cathode output end of three-phase power circuit; 4 ~ 7,9,10 pin of described integrated chip IC are detection of electrical leakage function pin, wherein 4 pin are reset terminal, connect capacitor C 7 back ground connection, 5 pin, 6 pin are the integrating capacitor pin, connect capacitor C 8, capacitor C 9 back ground connection respectively, 7 pin are the time-delay output pin, and electric capacity is set between the earth point, size by the electric capacity between change and the earth point can change the residual current acting time, 9 pin are reference voltage pin connecting to neutral preface instrument transformer one end, 10 pin are that residual current detects input pin, the other end of connecting resistance R13 behind the connecting resistance R14; 8 pin of described integrated chip IC are the driving voltage output pin, connect the circuits for triggering input of residual current release operating circuit; 11 ~ 15 pin of described integrated chip IC are discharge circuit, wherein 12 pin, 14 pin are the compensation pin, connect capacitor C 16, the capacitor C 18 back connecting resistance R12 other ends, resistance R 13 other ends respectively, 13 pin and 15 pin are the amplifier input pin, the other end of 13 pin connecting resistance R12 wherein, connecting to neutral preface instrument transformer one end behind the 15 pin connecting resistance R11,11 pin are the amplifier output pin, the other end of connecting resistance R13 is between 11 pin and 13 pin, between 13 pin and 14 pin, be serially connected with capacitor C 17, capacitor C 16, capacitor C 15 respectively between 14 pin and 15 pin.
11. residual current protecting according to claim 10 and control circuit is characterized in that, described 16 pin integrated chip IC are 54133 chips or 54134 chips.
12. residual current protecting according to claim 7 and control circuit, it is characterized in that, described residual current release operating circuit comprises the dropout power circuit, thyristor gating circuit, release, described dropout power circuit is made of the three-phase bridge rectifier circuit of input termination three-phase alternating-current supply, described thyristor gating circuit is by two-stage controllable silicon and anti-interference capacitor C1, divider resistance R1, R2, R3 constitutes, the control of one-level controllable silicon ST2 circuits for triggering input very wherein, negative pole connects dropout power circuit negative pole after meeting diode D13, and positive pole connects secondary controllable silicon negative pole, the end of anti-interference capacitor C1, the end of divider resistance R3; Another termination secondary SCR control utmost point of the other end of anti-interference capacitor C1 and divider resistance R3, divider resistance R1 one end, another termination divider resistance of divider resistance R1 R2 one end, the divider resistance R2 other end and secondary controllable silicon positive pole connect trip coil one end; Another termination dropout power circuit positive pole of trip coil.
13. residual current protecting according to claim 12 and control circuit is characterized in that, diode D6 of described release two ends reverse parallel connection.
14. residual current protecting according to claim 7 and control circuit; it is characterized in that; described specified residual current regulating circuit comprises four resistance and a four way switch K1; in described four resistance; wherein three resistance parallel connections; the contact that the specified residual current regulating circuit of one termination is external; the other end is connected in respectively on three selection contacts of four way switch; the fixed contact of described four way switch K1 connects another external contact of specified residual current regulating circuit, and the 4th resistance two ends connect two external contacts of specified residual current regulating circuit respectively.
15. specified residual current regulating circuit according to claim 14 is characterized in that described four way switch K1 is a kind of in rotary switch, toggle switch, the toggle switch.
16. residual current protecting according to claim 7 and control circuit; it is characterized in that; described specified residual current acting time adjustment circuit comprises four electric capacity and a four way switch K2; in described four electric capacity; wherein three electric capacity parallel connections; the contact that the specified residual current acting time adjustment circuit of one termination is external; the other end is connected in respectively on three selection contacts of four way switch; the fixed contact of described four way switch K1 connects another external contact of specified residual current acting time adjustment circuit, and the 4th electric capacity two ends connect two external contacts of specified residual current acting time adjustment circuit respectively.
17. specified residual current acting time adjustment circuit according to claim 16 is characterized in that described four way switch K2 is a kind of in rotary switch, toggle switch, the toggle switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205973298U CN201839218U (en) | 2010-11-08 | 2010-11-08 | Low-power consumption three-phase power circuit and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205973298U CN201839218U (en) | 2010-11-08 | 2010-11-08 | Low-power consumption three-phase power circuit and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201839218U true CN201839218U (en) | 2011-05-18 |
Family
ID=44009319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205973298U Expired - Lifetime CN201839218U (en) | 2010-11-08 | 2010-11-08 | Low-power consumption three-phase power circuit and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201839218U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196502A (en) * | 2017-07-25 | 2017-09-22 | 西安电子科技大学 | High voltage output level integrated circuit |
-
2010
- 2010-11-08 CN CN2010205973298U patent/CN201839218U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196502A (en) * | 2017-07-25 | 2017-09-22 | 西安电子科技大学 | High voltage output level integrated circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203377585U (en) | Residual current protection circuit | |
| CN106972769A (en) | A kind of light current electrical load overvoltage crowbar | |
| CN103166175A (en) | Input overvoltage protection circuit for light-emitting diode (LED) driving power supply | |
| CN205304222U (en) | Protective circuit of switching power supply | |
| CN101614795B (en) | Default-phase signal detection circuit for three-phase power | |
| CN105067945A (en) | Intelligent detection unit with direct-current arcing detection function and junction box | |
| CN204347112U (en) | A kind of current detection circuit being applicable to the current transformer of digital power | |
| CN206148999U (en) | Charger with adjustable take voltage of current -limiting protection | |
| CN201839218U (en) | Low-power consumption three-phase power circuit and application thereof | |
| CN103683186B (en) | A kind of residual current circuit breaker with self-setting function | |
| CN203871841U (en) | Small-scale residual current motion protective circuit breaker | |
| CN207782410U (en) | Ac-dc power supply circuit | |
| CN203205828U (en) | LED driving power supply input overvoltage protection circuit | |
| CN205377275U (en) | Surge current inhibitor | |
| CN204992525U (en) | Undervoltage protection circuit of delaying of switch electrical apparatus | |
| CN107093886A (en) | It is a kind of to be embedded in solar powered network from the voltage security power supply circuit become in device | |
| CN1747271A (en) | Protector of leakage and electricity steal | |
| CN210775634U (en) | Alternating current detection circuit | |
| CN208173507U (en) | A kind of E-business service terminal device | |
| CN202888790U (en) | Resettable over/under-voltage protector based on one-chip microcomputer | |
| CN201955393U (en) | Single-phase guide rail type carrier wave electric energy meter | |
| CN2879200Y (en) | Anti-theft leakage-proof device for electricity meter | |
| CN214479542U (en) | Power supply circuit and leakage protection circuit | |
| CN205583660U (en) | Output overcurrent protection circuit of frequency converter | |
| CN205847074U (en) | A kind of type photoelectric isolating A.C. contactor startup optimization holding circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325604 No. 328 Liu Dong Road, Liushi Town, Wenzhou, Zhejiang, Yueqing Patentee after: Zhejiang DANDT Technology Co., Ltd. Address before: 325604 No. 328 Liu Dong Road, Liushi Town, Wenzhou, Zhejiang, Yueqing Patentee before: Zhejiang Deling Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110518 |
|
| CX01 | Expiry of patent term |