CN2571047Y - Multifunctional earth leakage protective device - Google Patents
Multifunctional earth leakage protective device Download PDFInfo
- Publication number
- CN2571047Y CN2571047Y CN 02260008 CN02260008U CN2571047Y CN 2571047 Y CN2571047 Y CN 2571047Y CN 02260008 CN02260008 CN 02260008 CN 02260008 U CN02260008 U CN 02260008U CN 2571047 Y CN2571047 Y CN 2571047Y
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- controller
- zero sequence
- sequence current
- utility
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- Expired - Fee Related
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Abstract
The utility model relates to a multifunctional electrical leakage protector, which is suitable for being installed on various household appliances. The utility model can effectively prevent from electric shock caused by electrical leakage of electric appliances and appliances, and can also prevent from unsafe accidents, such as mechanical accidents, fire, etc. caused by the misoperation and abnormal operating of electric appliances and appliances. The utility model has the functions that a load power source can be firstly cut off by single pole, the power supplying power source can be cut off by double poles with duplicate protection for electronical leakage protection, and the reaction time of the whole action is within 0.1 second. The utility model is characterized in that a circuit board which is fixedly provided with a test button, a reset button, a zero sequence current transformer, a signal amplifier, and a circuit breaker is arranged in a casing; an earthing wire, and one end of each power source wire of two power source wires are respectively connected with a plug; the earthing wire, and the other ends of the two power source wires are connected with a protective sleeve wire. The utility model also comprises a controller which is coupled in a load, and a fault signal feedback wire which is provided with a resistor, wherein, the fault signal feedback wire goes around the zero sequence current transformer to be connected with the controller.
Description
Technical field
The utility model relates to a kind of electric security protector device, and particularly a kind of being suitable for installed on various household electrical appliance, is used to protect household appliances that security incident does not take place, and improves that it is safe in utilization, the multifunctional electric leakage protector of reliability.
Background technology
The existing earth leakage protective device that is used on the household electrical appliance, its function singleness only can make shielded electric circuit, when it leakage current occurs, can cut off the electricity supply automatically, implements protection.But along with the continuous development of science and technology, more and more higher to the requirement of household appliances Electrical Safety, the function of existing earth leakage protective device has not satisfied the demand in electric equipment products market yet.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of multifunctional electric leakage protector is provided; can prevent the electric shock accidents that causes by the electric leakage of electrical equipment, equipment effectively; can prevent other security incident that electrical equipment, equipment cause again under misoperation or non-normal working; and have at first one pole and cut off load power source, make earth leakage protective move the double protection functions of bipolar cut-out power supply again.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: multifunctional electric leakage protector, install in the enclosure by the wiring board that is fixed with test button, reset button, zero sequence current mutual inductor, signal amplifier, circuit breaker, one termination plug of earth connection, two power lines, the earth leakage protective device that the end in addition and the RVV of earth connection, two power lines connects and composes, a. also comprise the controller that is connected in the load, and being in series with a fault-signal feedback line of resistance, the pile warp zero sequence current mutual inductor is connected with controller; B. the test loop of girdle tests button is connected with both ends of power through zero sequence current mutual inductor, signal amplifier one end is connected with zero sequence current mutual inductor, end passes through circuit breaker in addition, rectification circuit is connected with both ends of power, the load two ends that have controller are connected with both ends of power, the end of circuit breaker output C point connecting resistance R1, resistance R 1 end is in addition connected with the fault-signal feedback line of a back-roll on zero sequence current mutual inductor, and the fault-signal feedback line is connected with the output stage D of load output loop middle controller.
Compared with prior art; advantage of the present utility model is that this multifunctional electric leakage protector is made up of earth leakage protective devices such as the leakage switch in original circuit, leakage protecting plug a fault-signal feedback line that is in series with resistance with the integral body that the controller two parts that are connected with load connect into.It is simple in structure; but it can effectively prevent by electrical equipment; the electric shock accidents that the equipment electric leakage causes; can prevent electrical equipment again; the machinery that equipment causes under misoperation or non-normal working; dangerous accident such as fire; and have at first one pole and cut off load power source; make earth leakage protective move the duplicate protection of bipolar cut-out power supply again; the whole movement response time is in 0.1 second; even controller or earth leakage protective device have one after long-term use is aging; it is unreliable to work; also also have one and can play protection work; therefore it is installed in and has improved the product safety reliability on the electric equipment products, enlarged the scope of application.
Description of drawings
Fig. 1. structural representation of the present utility model;
Fig. 2. line map of the present utility model;
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
The leakage protecting plug that also can be leakage switch and various types uses as earth leakage protective device.
Controller can be temperature limiter; temperature safety tube; thermoswitch; safety switches such as overload protective device; only need satisfy under normal condition and be connected in the load circuit; its closed resistance value is very little; zero sequence current mutual inductor does not have residual current and induces; or less than the specified non-operating current of earth leakage protective device; under non-normal working or misoperation state; when controller is subjected to fault-signal; open circuit immediately in the controller two ends or resistance becomes big suddenly; at first one pole cuts off load current; in zero sequence current mutual inductor, can produce residual current greater than the leakage switch desired action current; earth leakage protective device moves bipolar cut-out power supply, can be connected into by one or more controller.
The test loop of girdle tests button 2 is connected with power supply A, B two ends through zero sequence current mutual inductor 9, signal amplifier 10 1 ends are connected with zero sequence current mutual inductor 9, end is by circuit breaker 11 in addition, rectification circuit is connected with power supply A, B two ends, and the two ends that have controller 13, load 14 are connected with power supply A, B two ends.
One end of circuit breaker 11 output C point connecting resistances 3; the end in addition of resistance 3 is connected with the fault-signal feedback line 6 of a back-roll on zero sequence current mutual inductor 9; and fault-signal feedback line 6 is connected with the output stage D of load output loop middle controller 13; reset and protection lid 5 is screwed on shell 12, and multifunctional electric leakage protector is assembled into.
Now this multifunctional electric leakage protector is installed on the electric heater, load at this moment 14 is an electrothermal tube, and controller 13 is for being welded on the overheat controller in the heat-transfer pipe on the electrothermal tube.If the dry combustion method phenomenon appears in electric heater; then overheat controller receives heat alarm; when reaching operating temperature; at first be that the overheat controller one pole cuts off load power source; the loop conducting of fault-signal feedback line; can in zero sequence current mutual inductor 9, produce residual current, earth leakage protective device action, bipolar cut-out power supply greater than the earth leakage protective device desired action current.Because earth leakage protective device can not automatically reset, only after abnormal condition is got rid of, open reset and protection lid 5 again, press earth leakage protective device reset button 4 and just can restore electricity.
The direction of winding that hinders signal feedback line 6 for some reason is the same with the direction that power input B passes zero sequence current mutual inductor 9; so the induced current that can make zero sequence current mutual inductor 9 is greater than 2 times of rated residual operating currents; make multifunctional electric leakage protector can be in 0.1 second bipolar cutting off the electricity supply, thereby the safety of protection product.
Claims (4)
1. multifunctional electric leakage protector, by being fixed with test button (2), reset button (4), zero sequence current mutual inductor (9), signal amplifier (10), the wiring board (7) of circuit breaker (11) is installed in the shell (12), earth connection E, power line A, the termination plug (1) of B, earth connection E, power line A, the earth leakage protective device that end in addition and the RVV (8) of B connects and composes, it is characterized in that a. also comprises the controller (13) that is connected in the load, and being in series with the fault-signal feedback line (6) of resistance (3), pile warp zero sequence current mutual inductor (9) is connected with controller (13); B. the test loop of girdle tests button (2) is through zero sequence electric heating instrument transformer (9) and power supply A, the B two ends connect, signal amplifier (10) one ends are connected with zero sequence current mutual inductor (9), end is by circuit breaker (11) in addition, rectification circuit and power supply A, the B two ends connect, load (14) two ends and the power supply A that have controller (13), the B two ends connect, the end of circuit breaker (11) output C point connecting resistance (3) R1, the end in addition of resistance (3) is connected with the fault feedback line (6) of a back-roll on zero sequence current mutual inductor (9), and fault-signal feedback line (6) is connected with the output stage D of load output loop middle controller (13).
2. protector according to claim 1, it is characterized in that controller (13) can be safety switches such as temperature limiter, overheat controller, thermoswitch, water level switch, overload protective device, as long as its resistance can open circuit under non-normal working or it is big to become suddenly, and the device that operating voltage, electric current can meet load request all can; Controller can be in series by one or more.
3. protector according to claim 1 is characterized in that the outer reset and protection lid (5) that has been screwed of shell (12).
4. protector according to claim 1, the in addition end that it is characterized in that fault-signal feedback line (6) pass the four-core RVV that RVV (8) and earth connection E, power line A, B link into an integrated entity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260008 CN2571047Y (en) | 2002-09-16 | 2002-09-16 | Multifunctional earth leakage protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260008 CN2571047Y (en) | 2002-09-16 | 2002-09-16 | Multifunctional earth leakage protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2571047Y true CN2571047Y (en) | 2003-09-03 |
Family
ID=33727167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02260008 Expired - Fee Related CN2571047Y (en) | 2002-09-16 | 2002-09-16 | Multifunctional earth leakage protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2571047Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8213139B2 (en) | 2008-09-12 | 2012-07-03 | Luen Ming Electric Works Company Limited | Leakage current protection plug and interrupt protection plug contact spring structure |
| CN110173817A (en) * | 2019-05-30 | 2019-08-27 | 广东美的制冷设备有限公司 | The apparatus of air conditioning |
-
2002
- 2002-09-16 CN CN 02260008 patent/CN2571047Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8213139B2 (en) | 2008-09-12 | 2012-07-03 | Luen Ming Electric Works Company Limited | Leakage current protection plug and interrupt protection plug contact spring structure |
| CN110173817A (en) * | 2019-05-30 | 2019-08-27 | 广东美的制冷设备有限公司 | The apparatus of air conditioning |
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Legal Events
| 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 |