CN201191589Y - Integrated circuit breaker - Google Patents
Integrated circuit breaker Download PDFInfo
- Publication number
- CN201191589Y CN201191589Y CNU2008200432753U CN200820043275U CN201191589Y CN 201191589 Y CN201191589 Y CN 201191589Y CN U2008200432753 U CNU2008200432753 U CN U2008200432753U CN 200820043275 U CN200820043275 U CN 200820043275U CN 201191589 Y CN201191589 Y CN 201191589Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- delay
- voltage
- detection circuit
- integral
- 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 - Fee Related
Links
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 238000005070 sampling Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 208000025274 Lightning injury Diseases 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to an integrated breaker with the electric leakage detection function and overvoltage protection, which comprises a detection circuit and a drive circuit, and further comprises a time-delay circuit which is connected between the detection circuit and the drive circuit, trigger signals which are output from the detection circuit and are used to trigger drive circuit are transmitted to the drive circuit after delaying by a time delay circuit, and the detection circuit further comprises an electric leakage detection circuit and/or an overvoltage detection circuit. The overvoltage protection circuit is provided with time delay, which effectively avoids a breaker from doing false action because of instantaneous spike voltage of a power supply or lightning stroke in short time, and improves the anti-interference capacity of a circuit. In addition, the delaying time of leakage protection and threshold value of leakage current can be adjusted. The breaker can be applied in any occasions, and is greatly convenient for users to use.
Description
Technical field
The utility model relates to a kind of integrated circuit breaker with detection of electrical leakage function and overvoltage protection.
Background technology
Existing circuit breaker has adopted detection of electrical leakage and over-pressure safety device, when the electric shock thing takes place, or during the situation of electric wiring, equipment electric leakage, can in time drive release with dump, thereby prevent the generation of electrical fire and electric accident effectively.Circuit breaker has been widely used in the various power consumption equipments at present.
In order to improve the fail safe of power consumption equipment, existing circuit breaker is relatively more responsive to variation of power source voltage current value and leaky, in case sudden change of power source voltage current value or residual electricity flow valuve surpass default threshold value, circuit breaker is soon with dump.As everyone knows, there is instantaneous peak voltage in the power supply of a lot of power consumption equipments; Practice shows, in the time of on existing circuit breaker being used for this class power consumption equipment, circuit breaker is easy to be subjected to the influence of instantaneous peak voltage and frequent movement makes the antijamming capability of circuit lower.In addition, the leakage current threshold value of existing circuit breaker is generally fixed, and is of limited application, and the user uses inconvenience.
Disclose a kind of intelligent phase-detecting amplitude-detecting leak comprehensive protector as Chinese utility model patent ZL 02280316.5, had earth fault, overcurrent, open circuit, under-voltage and over-voltage protecting function; But be easy to be subjected to the interference of instantaneous spike overvoltage of power supply and thunderbolt, when instantaneous spike overvoltage and thunder-strike phenomenon occurring, the circuit breaker horse back is with the dump of power consumption equipment, antijamming capability is very poor, and the leakage current threshold value is fixed, can only be used in the low-voltage electrical apparatus field, not be suitable on the power consumption equipment of leakage current greater than 600mA.
Summary of the invention
At the deficiencies in the prior art, the utility model provides a kind of integrated circuit breaker with delay circuit, and antijamming capability is strong.
The utility model adopts following technical scheme: a kind of integral circuit breaker, comprise testing circuit, and drive circuit, it is characterized in that: also comprise the delay circuit that is connected between testing circuit and the drive circuit; After the delay circuit time-delay, transfer to drive circuit from the triggering signal that is used to trigger drive circuit of testing circuit output again.Have only power supply delay time that the anomalous signals duration sets than delay circuit to occur when long, drive circuit just is triggered, and then by the dump of release with power consumption equipment, has improved the antijamming capability of circuit effectively.
Above-mentioned testing circuit comprises electric-leakage detection circuit and/or over-voltage detection circuit.
Above-mentioned electric-leakage detection circuit, it comprises zero sequence current mutual inductor, amplifying circuit and the voltage comparator circuit that connects successively; Zero sequence current mutual inductor is passed to amplifying circuit with detected electric leakage signal and is amplified back input voltage comparison circuit, and voltage comparator circuit output triggering signal is to delay circuit.
Above-mentioned over-voltage detection circuit, it comprises sample circuit and voltage comparator circuit; Supply voltage after sample circuit sampling rectification, the input voltage comparison circuit; Voltage comparator circuit output triggering signal to overvoltage detects delay trigger circuit.
Overvoltage crowbar of the present utility model is provided with time-delay, has avoided circuit breaker because of the instantaneous peak voltage of power supply or the thunderbolt of short time misoperation to take place effectively, has improved the antijamming capability of circuit.In addition, earth leakage protective delay time and leakage current threshold value be scalable also, and circuit breaker can be applicable to different occasions, is very easy to user's use.
Description of drawings
Fig. 1 is an electric theory diagram of the present utility model;
Fig. 2 is electric-leakage detection circuit figure of the present utility model;
Fig. 3 is over-voltage detection circuit figure of the present utility model;
Fig. 4 is an integrated mounting structure schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises testing circuit, delay circuit, drive circuit, and testing circuit is connected with tested power supply, and delay circuit is connected between testing circuit and the drive circuit.When detecting power supply, testing circuit occurs when unusual, the output triggering signal, and triggering signal transfers to drive circuit after the delay circuit time-delay.Wherein testing circuit comprises electric-leakage detection circuit and/or over-voltage detection circuit, is respectively applied for the electric leakage anomaly and the overvoltage anomaly that detect power supply.
Electric-leakage detection circuit comprises zero sequence current mutual inductor, amplifying circuit and the voltage comparator circuit that connects successively.When leaky occurring, current phasor by the former limit of zero sequence current mutual inductor and non-vanishing, the zero-sequence transformer secondary produces sensor current signal as electric leakage signal, and detected electric leakage signal is passed to amplifying circuit amplify back input voltage comparison circuit, voltage comparator circuit output triggering signal is to delay circuit; After time-delay, drive the shunt release action, cut off the power supply of power consumption equipment.
As shown in Figure 2, amplifying circuit comprises operational amplifier U1A, fixed resistance R3, R9, R15, and variable resistor VR1, VR2.Voltage comparator circuit is by voltage stabilizing didoe D3, D4, operational amplifier U1B, U1C, and diode D2A, D2B, and resistance R 10, R21 are formed.Delay circuit is by operational amplifier U1D, resistance R 1, R2, R4～R8, and triode Q1, capacitor C 4, and delay selection switch S 2 is formed; Wherein resistance R 11, R5, R6, R7, R8 connect and form time delay resistance; The collector electrode of triode Q1 is connected with operational amplifier U1D input, time delay resistance and the capacitor C 4 that is in series in parallel between both connected node and ground; The output of operational amplifier U1D is connected with drive circuit; The fixed terminal of delay selection switch S 2 is connected with capacitor C 4, selects terminal to be connected with the series connection node of resistance R 11, R5, R6, R7, R8 respectively, and the delay time t that can set respectively is 0,0.25,0.1,0.5,1,1.5S.
Adjustable for the leakage current progression that makes circuit breaker, in the electric-leakage detection circuit of Fig. 2, be provided with resistance R 12-R19 totally 5 resistance between zero sequence current mutual inductor and the ground, and a leakage current selector switch S1; Wherein be connected with zero sequence current mutual inductor after the end parallel connection of resistance R 12-R19, an other end is connected leakage current I with 5 selection terminals of leakage current selector switch S1 respectively
Δ nBe respectively 0.1,0.3,0.5,3A; Select terminal to be connected leakage current I with the base stage of triode Q1 for the 6th of the leakage current selector switch by resistance R 1 back
Δ nBe 0.03A.Work as I
Δ nWhen being set at 0.03A, drop-away time is automatically made instantaneous, and promptly delay time t is 0; Can protect a direct contact of human body and a contact point, meet the regulation of each standard and unexpected prevention regulations.Leakage current I
Δ nLooking the concrete applied environment of circuit breaker with delay time t manually sets.
Over-voltage detection circuit comprises sample circuit and voltage comparator circuit, and voltage comparator circuit comprises comparator U2, resistance R 210, capacitor C 204, wherein integrated time delay circuit unit in the comparator U2.Supply voltage after sample circuit sampling rectification, the input voltage comparison circuit.As shown in Figure 3, testing circuit has three branch roads, resistance R 201, R204, R207, and capacitor C 201, diode D204 forms first branch road; Resistance R 203, R205, R208, capacitor C 202, diode D205 forms second branch road; Resistance R 202, R206, R209, capacitor C 203, diode D206 forms the 3rd branch road.Resistance R 201, R203, R202 are connected with L1, L2, the L3 of three phase mains respectively, are connected with the input 5 of comparator U2 after the negative electrode parallel connection of diode D204, D205, D206.Thereby sample circuit can detect power supply L1, L2, L3 and N voltage between phases effective value simultaneously, when if wherein arbitrarily the phase voltage effective value surpasses the delay time that comparator U2 sets (delay time of comparator U2 is set at 100ms in the present embodiment), comparator U2 will export triggering signal and trigger controllable silicon Q200, connect optical coupler U1, thereby make the shunt release action, the circuit breaker disjunction.Wherein, optical coupler U1 can change brilliant casket pipe into, or MOSFET, or relay.
Claims (8)
1. an integral circuit breaker comprises built-in testing circuit, and drive circuit, and release is characterized in that: also comprise the delay circuit that is connected between testing circuit and the drive circuit; After the delay circuit time-delay, transfer to drive circuit from the triggering signal that is used to trigger drive circuit of testing circuit output again; In order to the built-in electronic type release of driving switch.
2. integral circuit breaker according to claim 1 is characterized in that: described testing circuit comprises electric-leakage detection circuit and/or over-voltage detection circuit.
3. integral circuit breaker according to claim 2 is characterized in that: described testing circuit comprises electric-leakage detection circuit and/or over-voltage detection circuit, and integrated mode is installed in the bottom of circuit breaker.
4. according to claim 2 or 3 described integral circuit breakers, it is characterized in that: over-voltage detection circuit and electric-leakage detection circuit are integrated in respectively on two circuit boards, and these two circuit boards are common to use a no more than electronic trip unit to thread off in order to driving switch.
5. integral circuit breaker according to claim 2 is characterized in that: described electric-leakage detection circuit comprises the zero sequence current mutual inductor, amplifying circuit and the voltage comparator circuit that connect successively; Zero sequence current mutual inductor is passed to amplifying circuit with detected electric leakage signal and is amplified back input voltage comparison circuit, and voltage comparator circuit output triggering signal is to the delay trigger circuit that leaks electricity.
6. integral circuit breaker according to claim 2 is characterized in that: described over-voltage detection circuit comprises sample circuit and voltage comparator circuit; Supply voltage after sample circuit sampling rectification, the input voltage comparison circuit; Voltage comparator circuit output triggering signal is to the overvoltage delay trigger circuit.
7. integral circuit breaker according to claim 6, it is characterized in that: described overvoltage sample circuit is provided with three, its input is connected with L1, L2, the L3 of three phase mains respectively, output is connected with voltage comparator circuit, and any one of three-phase surpasses the overvoltage threshold value and all can trigger electronic trip unit.
8. according to claim 1 or 6 described integral circuit breakers, it is characterized in that: the driving element of described release drive circuit is a photoelectrical coupler, or relay, or brilliant casket pipe, or MOSFET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200432753U CN201191589Y (en) | 2008-01-24 | 2008-01-24 | Integrated circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200432753U CN201191589Y (en) | 2008-01-24 | 2008-01-24 | Integrated circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201191589Y true CN201191589Y (en) | 2009-02-04 |
Family
ID=40335751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200432753U Expired - Fee Related CN201191589Y (en) | 2008-01-24 | 2008-01-24 | Integrated circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201191589Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552160B (en) * | 2008-03-31 | 2012-01-11 | 北京人民电器厂有限公司 | Circuit protecting switch with delay control device |
| CN106911125A (en) * | 2017-03-13 | 2017-06-30 | 广东美的制冷设备有限公司 | SPM and its control method, air-conditioner |
| CN109167334A (en) * | 2018-09-21 | 2019-01-08 | 王汉禄 | Multi-purpose intelligent circuit breaker |
| CN112886533A (en) * | 2021-03-10 | 2021-06-01 | 沧州三正电子有限公司 | Ultra-fast solid-state circuit breaker |
| CN114268073A (en) * | 2020-09-16 | 2022-04-01 | 中兴通讯股份有限公司 | Protective circuit |
-
2008
- 2008-01-24 CN CNU2008200432753U patent/CN201191589Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552160B (en) * | 2008-03-31 | 2012-01-11 | 北京人民电器厂有限公司 | Circuit protecting switch with delay control device |
| CN106911125A (en) * | 2017-03-13 | 2017-06-30 | 广东美的制冷设备有限公司 | SPM and its control method, air-conditioner |
| CN109167334A (en) * | 2018-09-21 | 2019-01-08 | 王汉禄 | Multi-purpose intelligent circuit breaker |
| CN114268073A (en) * | 2020-09-16 | 2022-04-01 | 中兴通讯股份有限公司 | Protective circuit |
| CN112886533A (en) * | 2021-03-10 | 2021-06-01 | 沧州三正电子有限公司 | Ultra-fast solid-state circuit breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205123243U (en) | Lightning protection surge protector | |
| CN201191589Y (en) | Integrated circuit breaker | |
| CN107634504B (en) | Protection control device, the protection controller of PFC pfc circuit | |
| CN201846058U (en) | Over-voltage/over-current protecting circuit | |
| CN202957575U (en) | Electric leakage breaker | |
| CN202940564U (en) | Three-phase leakage circuit breaker | |
| CN102638024A (en) | Neutral line break protector | |
| CN206712447U (en) | A Leakage Protection Circuit with Overvoltage Protection | |
| CN109818332B (en) | Leakage protector with ground wire missing protection | |
| CN105790213B (en) | A kind of residual current counteracting method and its earth leakage protective device | |
| CN103762557A (en) | Device and method for open-circuit-resistant protection of current transformer | |
| CN205544257U (en) | From switching surge protector | |
| CN104953537A (en) | Overload protection switching device | |
| CN205960628U (en) | Current leakage protection device | |
| CN205921358U (en) | A leakage protection device | |
| CN205067571U (en) | Voltage detection circuit | |
| CN2566514Y (en) | Earth leakage and short-circuit overcurrent double protector for electric water heater | |
| CN207339261U (en) | A kind of overvoltage protection device for preventing high pressure from sealing in electrification display | |
| CN203166469U (en) | Phase sequence protective relay | |
| CN106451329B (en) | Leakage protection device | |
| CN201562951U (en) | Fault arc protection device | |
| CN205679686U (en) | The external chopper of electric energy meter | |
| CN205123244U (en) | Surge protector | |
| CN208028564U (en) | Earth leakage protective device with over-voltage protection function | |
| CN210111583U (en) | Leakage protector with low current trial run function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| C56 | Change in the name or address of the patentee | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cao Jinrui Inventor after: Li Huasong Inventor after: Gao Yongcun Inventor before: Cao Jinrui Inventor before: Li Huahao Inventor before: Gao Yongcun |
|
| CP02 | Change in the address of a patent holder |
Address after: Industrial Zone, Xinhui District, Xinhui District, Guangdong, Jiangmen province 529100 Patentee after: ABB Xinhui Low-voltage Switch Co., Ltd. Address before: Mingzhu building, town benevolence village, Xinhui District, Xinhui District, Guangdong, Jiangmen Province, China: 529100 Patentee before: ABB Xinhui Low-voltage Switch Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: ABB XINHUI LOW VOLTAGE SWITCHGEAR CO., LTD. Free format text: NEW ADDRESS: JINGUZHOU INDUSTRY DEVELOPMENT AREA, XINHUI DISTRICT, JIANGMEN CITY, GUANGDONG PROVINCE, ZIP CODE:529100 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CAO JINRUI; LI HUAHAO; GAO YONGCUN TO: CAO JINRUI; LI HUASONG; GAO YONGCUN |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 Termination date: 20140124 |