CN2562347Y - Phase-off and leakage circuit breaker - Google Patents
Phase-off and leakage circuit breaker Download PDFInfo
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- CN2562347Y CN2562347Y CN 02275819 CN02275819U CN2562347Y CN 2562347 Y CN2562347 Y CN 2562347Y CN 02275819 CN02275819 CN 02275819 CN 02275819 U CN02275819 U CN 02275819U CN 2562347 Y CN2562347 Y CN 2562347Y
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Abstract
A default phase leakage circuit breaker comprises a sampling circuit, three dispersion gate amplifying circuits and a power supply circuit. The output end of the default phase sampling circuit is connected with the input ends of the dispersion gate amplifying circuits and the input end of the default phase sampling circuit is connected with three power phase lines respectively. The power circuit is a stabilized voltage supply constituted by R4 connected in series with R5 and DW and C3 connected in parallel. One end of parallel connection of R5, DW and C3 is grounded and the other end is used as an output end of the stabilized voltage supply after connected with one end of R4. The other end of R4 as an input end is connected with the power supply of a leakage control circuit I. On the basis of original DZ15 type leakage breaker, the device adopts voltage actuation mode to increase the default phase protection function, thus constituting a novel default phase leakage circuit breaker.
Description
Affiliated technical field: the utility model belongs to a kind of circuit protecting switch or claims circuit breaker.
Background technology: in actual life and work, can normally move safely, need adapted to have the switch of defencive function or the purpose that multi-function protector reaches the normal operation of safety for guaranteeing low-pressure electric controlled cabinet and power consumption equipment.The employing open phase relay and the control circuit thereof that have are used earth leakage circuit-breaker again, as: commercially available DZ15 type leakage switch waits and achieves the goal; The employing electric current action type that has reaches the purpose of phase shortage control, and promptly each phase line is added electronic circuit and controlled outage with an induction by current coil, as: the leakage switch of DZ15LD type band open-phase protection function, multi-function protector etc.But there are 3 deficiencies in above-mentioned technology:
1, cost height, the volume of induction by current coil, relay coil are big; Magnetictrip and relay repeat to make and use, and cause resource wave to a certain extent useless;
2,, be not suitable for single-phase, two-phase, three-phase and mix and use as induction by current;
3, multi-function protector also is not suitable for the too big occasion of voltage fluctuation and uses except above-mentioned two.
Summary of the invention: the purpose of this utility model is with original DZ15 type residual current circuit breaker, adopts voltage action type mode to increase an open-phase protection function and constitutes a kind of new phase shortage residual current circuit breaker.
The phase shortage residual current circuit breaker that the utility model provides, other connected mode partly is constant, and just electronic circuit has two kinds of connected modes.That is: the electronic circuit that can use the utility model to provide also can be connected the electronic circuit in the DZ15 type residual current circuit breaker on default phase signal treatment circuit in the utility model and the market now.Find that through adjustment above-mentioned two kinds of connections all can realize mass production in the experiment to each parameter.
The utility model is achieved through the following technical solutions: the phase shortage residual current circuit breaker is characterised in that: the default phase signal treatment circuit is made of sample circuit, three NAND gate amplifying circuits and power circuit, the output of phase shortage sample circuit is connected with the input of three NAND gate amplifying circuits, and the input of phase shortage sample circuit is connected with three power supply phase lines respectively; Power circuit is by R5, DW, C3 and connects the back and be connected in series with R4 and constitute stabilized voltage power supply, R5, DW, C3 and an end ground connection that connects, and the other end is connected afterwards the output as stabilized voltage power supply with the end of R4; The other end of R4 is connected as the power supply of input with leakage control circuit I.
Above-mentioned phase shortage sample circuit is by diode D6, D8, D10, resistance R 6～R11, capacitor C 4～C6 constitutes, in the sampling slip, resistance and electric capacity and an end ground connection that connects, the other end is as the output of phase shortage sample circuit, and the positive terminal of D6, D8, D10 is an input, and they are connected with three power supply phase lines respectively.
Above-mentioned three NAND gate amplifying circuits are made of diode D7, D9, D11 and triode BG, and the positive terminal of D7, D9, D11 is attempted by the base stage of triode, and the other end is the input of three NAND gate amplifying circuits, and the output with the phase shortage sample circuit is connected respectively; The current collection of the triode very output of three NAND gate amplifying circuits is connected with the end of current-limiting resistance R1, and the other end of R1 is connected with the control end of one-way SCR, and the emitter of triode is connected with the output of power supply.
Triode BG in the above-mentioned NAND gate amplifying circuit can use integrated circuit block to form.
Below in conjunction with accompanying drawing and two embodiment shown in the drawings, the utility model will be further described, but summary of the invention is not limited to shown in the drawings and Examples.
Description of drawings:
Fig. 1 is embodiment 1 circuit theory diagrams that the phase shortage residual current circuit breaker that the utility model proposes uses resolution element to form.
Embodiment 2 circuit theory diagrams that Fig. 2 uses integrated circuit to form for the phase shortage residual current circuit breaker.
Embodiment:
Among Fig. 1,2, L1, L2, L3 are respectively three-phase power line, and N is a zero line.B1 is a magnetictrip, and B2 is the induction by current coil.The experiment button of electric leakage takes place in AN for simulation phase line L3.Other graphic symbol and sign are all identical with electronic circuit custom mark method.That is: D is a diode, and C is a capacitor, and R is a resistance, and BG is a triode, and IC is an integrated circuit, selects 555 time-base circuits in the present embodiment for use, and DW is a voltage stabilizing didoe, and SCR is an one-way SCR, and RW is for regulating resistance.
The I portion on the dotted line left side is a leakage control circuit among Fig. 1 and Fig. 2.The II and the III on dotted line the right partly are the default phase signal treatment circuits, are made of sample circuit, three NAND gate amplifying circuits and power circuit.A, b, c are the tie point of leakage control circuit I and default phase signal sampling and three NAND gate amplifying circuit II, III.
The phase shortage sample circuit is by diode D6, D8, D10, resistance R 6～R11, capacitor C 4～C6 constitutes, wherein: D6, R6, R7 and C4 and joint group be connected in series the sampling slip that constitutes L1 in proper order; D8, R8, R9 and C5 and joint group is connected in series the sampling slip that constitutes L2 in proper order; D10, R10, R11 and C6 and joint group is connected in series the sampling slip that constitutes L3 in proper order; In three sampling slips, resistance and electric capacity and an end ground connection that connects, the other end is as the output of phase shortage sample circuit.The positive terminal of D6, D8, D10 is an input, and they are connected with L1, L2, three power supply phase lines of L3 respectively.
Three NAND gate amplifying circuits are made of diode D7, D9, D11 and triode BG, and wherein: the positive terminal of D7, D9, D11 is attempted by the base stage of triode, and the other end is the input of three NAND gate amplifying circuits, and the output with the phase shortage sample circuit is connected respectively; The current collection of the triode very output of three NAND gate amplifying circuits is connected with the end of current-limiting resistance R1, and the other end of R1 is connected with the control end of one-way SCR, and the emitter of triode is connected with the output of power supply.
Power circuit is by R5, DW, C3 and connects the back and be connected in series with R4 and constitute stabilized voltage power supply, R5, DW, C3 and an end ground connection that connects, and the other end is connected afterwards the output as stabilized voltage power supply with the end of R4; The other end of R4 is connected as the power supply of input with leakage control circuit I.
The course of work of phase shortage residual current circuit breaker is as follows:
The course of work of leakage control circuit I is that three-phase alternating current constitutes DC power supply to zero line N behind diode D1～D3 three phase half wave rectification, for leakage control circuit work.When three-phase current unbalance, when promptly electric leakage being arranged, current transformer B2 will produce an alternating voltage through diode D5 rectification, and resistance R 1 current limliting after the R2 shunting, triggers unidirectional controllable silicon S CR conducting.The magnetictrip adhesive, the outage of phase shortage residual current circuit breaker.Wherein: diode D4, capacitor C 1 are to be used for absorbing the self induction electromotive force that the B1 switching produces.Play the effect of protection SCR.Capacitor C 2 is used for absorbing the clutter of B2 induction.The size of the resistance of adjusting R2 and the number of turn scalable drop-away current of B2.
AN has attonity after being used for simulating the L3 Leaked Current of Line to Ground.According to the size of specified leakage current, select the resistance of R1, R2, R3.
DC power supply behind the three phase half wave rectification, through magnetictrip B1, resistance R 4 step-downs, capacitor C 3 filtering are worked for three NAND gate amplifying circuit II or III after the voltage stabilizing didoe DW voltage stabilizing.
The operation principle of L1, L2, L3 three-phase is identical, existing with a phase L1 wherein entire work process is described.When three-phase all has voltage, that is: not during phase shortage, be added in alternating current on the L1 through diode D6 halfwave rectifier, resistance R 6 step-downs, after capacitor C 4 filtering, the sampling of resistance R 7 dividing potential drops, the voltage on the voltage 〉=DW on this moment R7.Therefore triode BG ends.B point no-voltage triggers, and unidirectional controllable silicon S CR ends, and release B1 is failure to actuate.Therefore the phase shortage residual current circuit breaker is in normal operating conditions, that is: "on" position.When other two-phase L2, L3 have electricity, when L1 does not have electricity, that is: during phase shortage, the voltage of R7 dividing potential drop sampling is OV, electric current through emitter-base stage-D7 of BG to R7, so BG conducting.Voltage on the DW is added to the b point through emitter-collector electrode of BG, and through after the R1 current limliting, triggers the SCR conducting, and the B1 adhesive is threaded off, phase shortage leakage switch tripping operation outage.
The course of work and the II of default phase signal treatment circuit III are basic identical, and different is: to the amplification of default phase signal and anti-phase, adopt integrated circuit to finish, therefore to the voltage on the sample resistance, movement response is more accurate.
Therefore the utility model is not loaded by voltage action type design, i.e. the whether balanced influence of three-phase current, can be under the situation of three-phases such as illumination, motor, single-phase mixing operate as normal.If have only single phase poaer supply, in the time of utilizing its leakage function, only need L2, L3 are shorted on the L1 and can normally use.In addition when short circuit, when, cutting off the electricity supply automatically during less than 70V to the voltage of zero line N, promptly it also has short-circuit protection function.Its practicality is very strong as can be seen from function aspects to be stranded this.
As can be seen, the phase shortage circuit has partly only increased by 20 electronic components to the phase shortage residual current circuit breaker from schematic diagram, by present retail price, only needs to increase about 5 yuan of RMB.Comprise that the residual current circuit breaker of selling on the present market also just increases about 5 yuan, just can increase an open-phase protection function.Therefore, from economical and practical angle also as can be seen, it has very strong practicality.Aspect manufacturing, experiment showed, the requirement of component error very widely, therefore can realize mass production.
Claims (4)
1, a kind of phase shortage residual current circuit breaker, comprise leakage control circuit, default phase signal treatment circuit, it is characterized in that: the default phase signal treatment circuit is made of sample circuit, three NAND gate amplifying circuits and power circuit, the output of phase shortage sample circuit is connected with the input of three NAND gate amplifying circuits, and the input of phase shortage sample circuit is connected with three power supply phase lines respectively; Power circuit is by R5, DW, C3 and connects the back and be connected in series with R4 and constitute stabilized voltage power supply, R5, DW, C3 and an end ground connection that connects, and the other end is connected afterwards the output as stabilized voltage power supply with the end of R4; The other end of R4 is connected as the power supply of input with leakage control circuit I.
2, circuit breaker according to claim 1, it is characterized in that: the phase shortage sample circuit is by diode D6, D8, D10, resistance R 6～R11, capacitor C 4～C6 constitutes, in the sampling slip, resistance and electric capacity and an end ground connection that connects, the other end is as the output of phase shortage sample circuit, the positive terminal of D6, D8, D10 is an input, and they are connected with three power supply phase lines respectively.
3, circuit breaker according to claim 1, it is characterized in that: three NAND gate amplifying circuits are made of diode D7, D9, D11 and triode BG, the positive terminal of D7, D9, D11 is attempted by the base stage of triode, the other end is the input of three NAND gate amplifying circuits, and the output with the phase shortage sample circuit is connected respectively; The current collection of the triode very output of three NAND gate amplifying circuits is connected with the end of current-limiting resistance R1, and the other end of R1 is connected with the control end of one-way SCR, and the emitter of triode is connected with the output of power supply.
4, circuit breaker according to claim 3 is characterized in that: the triode BG in the NAND gate amplifying circuit can use integrated circuit block to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275819 CN2562347Y (en) | 2002-07-20 | 2002-07-20 | Phase-off and leakage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275819 CN2562347Y (en) | 2002-07-20 | 2002-07-20 | Phase-off and leakage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2562347Y true CN2562347Y (en) | 2003-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02275819 Expired - Fee Related CN2562347Y (en) | 2002-07-20 | 2002-07-20 | Phase-off and leakage circuit breaker |
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| Country | Link |
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| CN (1) | CN2562347Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732862A (en) * | 2017-10-20 | 2018-02-23 | 杨蔚星 | A kind of automatically controlled protection switch of three-phase and four-line all direction multifunctional accident |
-
2002
- 2002-07-20 CN CN 02275819 patent/CN2562347Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732862A (en) * | 2017-10-20 | 2018-02-23 | 杨蔚星 | A kind of automatically controlled protection switch of three-phase and four-line all direction multifunctional accident |
| CN107732862B (en) * | 2017-10-20 | 2024-04-19 | 杨蔚星 | Three-phase four-wire omnibearing multifunctional accident electric control protection switch |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |