CN104505668A - Voltage-current hybrid leakage protective plug - Google Patents
Voltage-current hybrid leakage protective plug Download PDFInfo
- Publication number
- CN104505668A CN104505668A CN201410826097.1A CN201410826097A CN104505668A CN 104505668 A CN104505668 A CN 104505668A CN 201410826097 A CN201410826097 A CN 201410826097A CN 104505668 A CN104505668 A CN 104505668A
- Authority
- CN
- China
- Prior art keywords
- electrically connected
- pin
- voltage
- zero
- integrated package
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6675—Structural association with built-in electrical component with built-in electronic circuit with built-in power supply
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
- H01R13/7031—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/14—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to occurrence of voltage on parts normally at earth potential
Abstract
The invention relates to a voltage-current hybrid leakage protective plug. The voltage-current hybrid leakage protective plug is characterized by comprising a release JL with three pairs of contacts, an electronic switch and first and second fault sensing circuits; the output end of the electronic switch is electrically connected with a live wire L of alternating-current mains supply through the release JL; the first fault sensing circuit comprises a voltage coupling coil, a first zero-sequence current transformer and a changeover switch; the first fault sensing circuit sleeves a zero wire N and the live wire L of the alternating-current mains supply; one end of the voltage coupling coil is serially connected with a voltage limiting resistor and the changeover switch and is then electrically connected with a ground wire E; the other end of the voltage coupling coil is electrically connected with the zero wire N of the alternating-current mains supply; two ends of the first zero-sequence current transformer are electrically connected with two pins of the input end of the electronic switch; the second fault sensing circuit comprises a second zero-sequence current transformer sleeving the ground wire E; two ends of the second zero-sequence current transformer are electrically connected with two pins of the other input end of the electronic switch, respectively. The voltage-current hybrid leakage protective plug has the advantages that the circuit structure is simple, leaking voltage of the ground wire can be accurately sensed, a load is powered off immediately, the plug still releases and powers off when the zero wire N and the live wire L of a main loop are reversely connected and when a ground wire leakage fault occurs, and running is safer and more reliable.
Description
Technical field
The present invention relates to a kind of voltage transitions type leakage protecting plug.
Background technology
Existing leakage protecting plug comprises a rectification circuit, two-way electronic switch, signal processing circuit, two zero sequence current mutual inductors, a transformer and is with the release of three pairs of contacts.On the zero line N that zero sequence current mutual inductor ZL1 is set in city's alternating current and live wire L, be electrically connected with the input of first via signal processing circuit; Another zero sequence current mutual inductor ZL2 is set on ground wire, is electrically connected with the input of the second road signal processing circuit; One end of primary is electrically connected with zero line N pin, the other end is connected in series a resistance and is then electrically connected with lower margin E, secondary coil one end of transformer is electrically connected with an input of the second road signal processing circuit, and the other end is electrically connected with another input of the second road signal processing circuit by a diverter switch; Be electrically connected with the control end of electronic switch after the output of two paths of signals amplification treatment circuit is connected in series isolating diode respectively, thus control electronic switch forces band three pairs of contacts release action power-off when load appliance or ground wire break down.This circuit structure is complicated, induced voltage and the electrical leakage voltage of ground wire can't be differentiated, and when the zero line N of major loop and live wire L reversal connection, if run into the fault of ground wire electric leakage simultaneously, this structure just there will be the danger of power-off of can not threading off, so security performance has certain defect.
Summary of the invention
The object of the invention is overcome the deficiencies in the prior art and provide a kind of circuit structure simple; the coupling transformer of induction ground wire false voltage need not be increased; can accurately sense ground wire electrical leakage voltage and can induced voltage be filtered out; the positive and negative connection of zero line N and live wire L need not be distinguished again; load power source can both be cut off immediately, more safe and reliable electric current and voltage mixed type leakage protecting plug.
In order to achieve the above object, the present invention is achieved in that it is a kind of voltage transitions type leakage protecting plug, it is characterized in that comprising the release JL of band three pairs of contacts, electronic switch, Fisrt fault sensor circuit and the second fault sensor circuit and hookup; Wherein
The output of described electronic switch is electrically connected with the live wire L of city's alternating current by release JL;
Three pairs of contacts of described release JL are connected on ground wire E, zero line N and live wire L respectively, and release JL also comprises the reset key that three pairs of contacts are resetted;
Described Fisrt fault sensor circuit comprises voltage couples coil, the first zero sequence current mutual inductor, change over switch and resistance Rv, on the zero line N that described first zero sequence current mutual inductor is set in city's alternating current and live wire L, the two ends of described first zero sequence current mutual inductor are electrically connected with the bipod of electronic switch input respectively, described adding, is electrically connected with ground wire E or grounding pin E after one end serial connection pressure limiting resistance and change over switch of the voltage couples coil on the first zero sequence current mutual inductor, and the other end of voltage couples coil is electrically connected with the zero line N of city's alternating current or pin N;
Described second fault sensor circuit comprises the second zero sequence current mutual inductor, and described second zero sequence current mutual inductor is set on ground wire E, and the two ends of the second zero sequence current mutual inductor are electrically connected with the bipod of another input of electronic switch respectively.
Described electronic switch comprises bridge rectifier, controllable silicon, amplification process integrated package, the first to the 5th electric capacity and current-limiting resistance, one input of wherein said bridge rectifier is electrically connected with the live wire L of city's alternating current by release JL, another input of bridge rectifier is electrically connected with the zero line N of city's alternating current, and the output of bridge rectifier is controllable silicon, amplification process integrated package provides direct-current working volts, described model of amplifying process integrated package is that RT54123B(is hereinafter referred to as integrated package), 8 pin of integrated package are electrically connected by the positive terminal of current-limiting resistance with bridge rectifier output, 4 pin of integrated package are electrically connected with the public negative pole end of bridge rectifier output, 1 pin and 2 pin of integrated package are electrically connected with the two ends of the first zero sequence current mutual inductor respectively, the two ends of described first filter capacitor are electrically connected with 4 pin of integrated package and 8 pin respectively, the two ends of described second electric capacity are electrically connected with 4 pin of integrated package and 7 pin respectively, the two ends of described 3rd electric capacity are electrically connected with 6 pin of integrated package and 7 pin respectively, the two ends of described 4th electric capacity are electrically connected with 4 pin of integrated package and 5 pin respectively, the two ends of described 5th electric capacity are electrically connected with 2 pin of integrated package and 4 pin respectively, described silicon controlled anode and negative electrode are connected electrically in the positive-negative output end of bridge rectifier respectively, and silicon controlled control end is electrically connected with output 7 pin of integrated package.
Described voltage couples coil adds around on the first zero sequence current mutual inductor of induction major loop fault.
In the technical program, also comprise the second resistance and the 6th electric capacity, the two ends after described second resistance and the 6th Capacitance parallel connection are connected electrically on the two ends of the first zero sequence current mutual inductor respectively.
In the technical program, also comprise the 3rd resistance and the 7th electric capacity, the two ends after described 3rd resistance and the 7th Capacitance parallel connection are connected electrically on two outputs of the second zero sequence current mutual inductor respectively.
Described hookup comprises Test Switchboard and test resistance, described Test Switchboard connect with test resistance after one end with pass the live wire L output of major loop instrument transformer and be electrically connected, the other end is electrically connected with zero line N input.
The present invention's advantage is compared with prior art: circuit structure is simple, the coupling transformer of induction ground wire false voltage need not be increased, accurately can sense ground wire electrical leakage voltage and cut off load power source immediately, and when zero line N and the live wire L reversal connection of major loop, if run into ground wire leak current fault simultaneously, this structure can be threaded off power-off in the same old way, works more safe and reliable.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.It should be noted that at this, the explanation for these execution modes understands the present invention for helping, but does not form limitation of the invention.In addition, if below in described each execution mode of the present invention involved technical characteristic do not form conflict each other and just can be combined with each other.
In describing the invention, term " first " and " the 7th " only for describing object, and can not be interpreted as instruction or hint relative importance.
As shown in Figure 1, it is a kind of voltage transitions type leakage protecting plug, comprises the release JL1 of band three pairs of contacts, electronic switch 2, Fisrt fault sensor circuit 3 and the second fault sensor circuit 4 and hookup 5; Wherein
The output of described electronic switch 2 is electrically connected with the live wire L of city's alternating current by release JL;
Three pairs of contacts of described release JL1 are connected on ground wire E, zero line N and live wire L respectively, and release JL also comprises the reset key RESET that three pairs of contacts are resetted;
Described Fisrt fault sensor circuit 3 comprises voltage couples coil Lv, first zero sequence current mutual inductor ZCT1 and change over switch Kv, on the zero line N that first zero sequence current mutual inductor ZCT1 is set in city's alternating current and live wire L, described voltage couples coil Lv adds around on the first zero sequence current mutual inductor ZCT1, be electrically connected with ground wire E or grounding pin E after the serial connection pressure limiting resistance Rv and change over switch Kv of one end, the other end of voltage couples coil Lv is electrically connected with the zero line N of city's alternating current or pin N, the two ends of described first zero sequence current mutual inductor ZCT1 are electrically connected with the bipod of electronic switch 2 input respectively,
Described second fault sensor circuit 4 comprises the second zero sequence current mutual inductor ZCT2, and described second zero sequence current mutual inductor ZCT2 is set on ground wire E, and the second zero sequence current mutual inductor ZCT2 two ends are electrically connected with another input bipod of electronic switch respectively.
Described hookup 5 comprises Test Switchboard TEST and test resistance Rtest, after Test Switchboard TEST connects with test resistance Rtest, one end is electrically connected with the zero line N of city's alternating current of input, and the other end and the output live wire L namely after the first zero sequence current mutual inductor ZCT1 is electrically connected.Process of the test: press Test Switchboard TEST, the live wire L through the first zero sequence current mutual inductor ZCT1 connects input zero-power line N by test resistance Rtest, produces a test current signal, and is cut off the electricity supply by above-mentioned abnormal dropout process; The reset key RESET of release coordinates with test switch TEST, can also be used as mains switch and use.
In the present embodiment, described voltage couples coil Lv adds around on the first zero sequence current mutual inductor ZCT1 of induction major loop L, N fault, need not increase the translation function that transformer-coupled circuit can realize ground wire false voltage like this.
In the present embodiment, also comprise the second resistance R2 and the 6th electric capacity C6, the two ends after described second resistance R2 is in parallel with the 6th electric capacity C6 are connected electrically on the two ends of the first zero sequence current mutual inductor ZCT1 respectively.
In the present embodiment, also comprise the 3rd resistance R3 and the 7th electric capacity C7, the two ends after described 3rd resistance R3 is in parallel with the 7th electric capacity C7 are connected electrically on the two ends of the second zero sequence current mutual inductor ZCT2 respectively.
In the present embodiment, described one end added around the voltage couples coil Lv on the first instrument transformer ZCT1 is electrically connected with zero line N or pin N, the other end is electrically connected with input ground wire E or grounding pin E by change over switch Kv after resistance Rv is electrically connected again, when change over switch Kv is in closed conducting state, the electrical leakage voltage signal of ground wire (or lower margin) is by adding around the coil Lv on the first instrument transformer ZCT1, leakage current signal together with major loop is coupled to instrument transformer output and is sent to the input 1 amplifying process ic chip, 2 pin, and chain reaction dropout power-off reaches the effect of safeguard protection.
In the present embodiment, described electronic switch 2 comprises bridge rectifier D W, current-limiting resistance R1, filter capacitor C1, controllable silicon Q, amplifies process ic chip and the second to the 5th electric capacity C2-C5, one input of wherein said bridge rectifier D W is electrically connected with the live wire L of city's alternating current by release JL, another input of bridge rectifier D W is electrically connected with the zero line N of city's alternating current, and the positive-negative output end of bridge rectifier D W is controllable silicon Q, amplification process ic chip provides direct-current working volts, described model of amplifying process ic chip is RT54123B, 8 pin amplifying process ic chip are electrically connected with the positive terminal of bridge rectifier D W output by current-limiting resistance R1, 4 pin amplifying process ic chip are connected with the public negative electricity of bridge rectifier D W output, 1 pin and 2 pin that amplify process ic chip are electrically connected with the two ends of the first zero sequence current mutual inductor ZCT1 respectively, the two ends of described filter capacitor C1 respectively with amplify 4 pin that process ic chip and 8 pin are electrically connected, the two ends of described second electric capacity C2 respectively with amplify 4 pin that process ic chip and 7 pin are electrically connected, the two ends of described 3rd electric capacity C3 respectively with amplify 6 pin that process ic chip and 7 pin are electrically connected, the two ends of described 4th electric capacity C4 respectively with amplify 4 pin that process ic chip and 5 pin are electrically connected, the two ends of described 5th electric capacity C5 respectively with amplify 2 pin that process ic chip and 4 pin are electrically connected, the anode of described controllable silicon Q and negative electrode are connected electrically in the positive-negative output end of bridge rectifier D W respectively, and output 7 pin that control end and the amplification of controllable silicon Q process ic chip is electrically connected.
When using of the present invention, first change over switch Kv is placed in voltage turn-on gear, then is inserted on socket by the present invention, press reset key RESET, three pairs of contacts of release JL are conducting state, and city's alternating current is powered to load and electrical appliance by the present invention; And supply electronic switching circuit power supply by tripping coil JL, bridge rectifier D W, current-limiting resistance R3 and filter capacitor C1; Under normal condition, major loop or ground wire are without leak current fault, the electronic switching circuit be made up of elements such as controllable silicon Q and amplification process ic chips is in static armed state, tripping coil JL is by the supply current of about 0.5mA, and its Weak magentic-field produced can not make release thread off.When the first change over switch Kv1 and the second change over switch Kv2 is placed in electric current disconnection gear, namely the present invention is in the extremely disconnected operating state of common residual current acting type three, and its operation principle is omitted.
When there is leak current fault in load appliance or ground wire, the electrical leakage voltage of ground wire E is by change over switch Kv, resistance Rv be added in the first zero sequence current mutual inductor ZCT1 adds around voltage couples coil Lv and zero line N between, be set in power line L, the first zero sequence current mutual inductor ZCT1 on N will sense ground wire failure voltage signal or major loop fault-current signal immediately, and send it to the input 1 amplifying process ic chip, 2 pin, outputted to the control pole of controllable silicon Q by 7 pin after amplifying process, trigger controllable silicon Q conducting immediately by the both positive and negative polarity short circuit of bridge rectifier D W, the tripping coil two ends of release JL are made to be attempted by zero-power line N and live wire L, trip coil JL produces powerful electric current (about 750mA) immediately, the tripping operation of interlock tripping mechanism, by power firestreak, zero line and earth connection cut off simultaneously, when zero line N and the live wire L reversal connection of major loop, if ground wire also runs into the fault of electric leakage simultaneously, namely above-mentioned voltage couples circuit can lose efficacy, at this moment namely the second fault sensor circuit can play the effect of leakage current dropout power-off, compensate for the weak point of voltage transitions type, more effective protection personal safety.
In the present embodiment, bridge rectifier D W comprises the bridge rectifier of four diodes formations and prevents this patent internal circuit from suffering the second piezo-resistance RU2 of surge voltage impact, and two ends of the second piezo-resistance RU2 are connected on the positive-negative output end of bridge rectifier.
In the present embodiment, go back between the zero line N and live wire L of city's alternating current and be connected to and prevent load appliance to be struck by lightning or the first piezo-resistance RU1 of surge voltage impact.
Below by reference to the accompanying drawings detailed description is made to embodiments of the present invention, but the present invention is not limited to described execution mode.For the ordinary skill in the art, carry out multiple change, amendment, replacement and distortion when not departing from principle of the present invention and aim to these execution modes still to fall within protection scope of the present invention.
Claims (6)
1. an electric current and voltage mixed type leakage protecting plug, is characterized in that the release JL(1 comprising band three pairs of contacts), electronic switch (2), Fisrt fault sensor circuit (3) and the second fault sensor circuit (4); Wherein
The output of described electronic switch (2) is by release JL(1) be electrically connected with the live wire L of city's alternating current;
Described release JL(1) three pairs of contacts be connected on ground wire E, zero line N and live wire L respectively, release JL(1) also comprise the reset key (RESET) that the three pairs of contacts are resetted;
Described Fisrt fault sensor circuit (3) comprises voltage couples coil (Lv), first zero sequence current mutual inductor (ZCT1) and change over switch (Kv), on the zero line N that described Fisrt fault sensor circuit (3) is set in city's alternating current and live wire L, one end serial connection pressure limiting resistance (Rv) of described voltage couples coil (Lv) and change over switch (Kv) are electrically connected with ground wire E or grounding pin E afterwards, the other end of voltage induced coil (Lv) is electrically connected with the zero line N of city's alternating current or pin N, the two ends of described first zero sequence current mutual inductor (ZCT1) are electrically connected with the bipod of electronic switch (2) input respectively,
Described second fault sensor circuit (4) comprises the second zero sequence current mutual inductor (ZCT2), described second zero sequence current mutual inductor (ZCT2) is set on ground wire E, and the two ends of the second zero sequence current mutual inductor (ZCT2) are electrically connected with the bipod of electronic switch (2) another input respectively.
2. voltage transitions type leakage protecting plug according to claim 1, is characterized in that described electronic switch (2) comprises bridge rectifier (DW), controllable silicon (Q), amplifies process integrated package (IC), the first to the 5th electric capacity (C1-C5) and current-limiting resistance (R1); One input of wherein said bridge rectifier (DW) is by release JL(1) be electrically connected with the live wire L of city's alternating current, another input of bridge rectifier (DW) is electrically connected with the zero line N of city's alternating current, and the output of bridge rectifier (DW) is the controllable silicon (Q) of electronic switching circuit, amplification process integrated package (IC) provides direct-current working volts; described model of amplifying process integrated package (IC) is RT54123B, 8 pin amplifying process integrated package (IC) are electrically connected with the positive terminal of bridge rectifier (DW) output by current-limiting resistance (R1), 4 pin amplifying process integrated package (IC) are electrically connected with the public negative pole end of bridge rectifier (DW) output, 1 pin and 2 pin that amplify process integrated package (IC) are electrically connected with the two ends of the first zero sequence current mutual inductor (ZCT1) respectively, the two ends of described first power filtering capacitor (C1) respectively with amplify 4 pin that process integrated package (IC) and 8 pin are electrically connected, the two ends of described second electric capacity (C2) respectively with amplify 4 pin that process integrated package (IC) and 7 pin are electrically connected, the two ends of described 3rd electric capacity (C3) respectively with amplify 6 pin that process integrated package (IC) and 7 pin are electrically connected, the two ends of described 4th electric capacity (C4) respectively with amplify 4 pin that process integrated package (IC) and 5 pin are electrically connected, the two ends of described 5th electric capacity (C5) respectively with amplify 2 pin that process integrated package (IC) and 4 pin are electrically connected, the anode of described controllable silicon (Q) and negative electrode are connected electrically in two positive-negative output ends of bridge rectifier (DW) respectively, and output 7 pin that control end and the amplification of controllable silicon (Q) process integrated package (IC) is electrically connected.
3. voltage transitions type leakage protecting plug according to claim 1, is characterized in that described voltage couples coil (Lv) adds around on the first zero sequence current mutual inductor ZCT1 of induction major loop (L, N) fault current.
4. voltage transitions type leakage protecting plug according to claim 1; characterized by further comprising the second resistance (R2) and the 6th electric capacity (C6), the two ends after described second resistance (R2) is in parallel with the 6th electric capacity (C6) are connected electrically on the two ends of the first zero sequence current mutual inductor (ZCT1) respectively.
5. voltage transitions type leakage protecting plug according to claim 1; characterized by further comprising the 3rd resistance (R3) and the 7th electric capacity (C7), the two ends after described 3rd resistance (R3) is in parallel with the 7th electric capacity (C7) are connected electrically on two outputs of the second zero sequence current mutual inductor (ZCT2) respectively.
6. voltage transitions type leakage protecting plug according to claim 1; it is characterized in that described hookup (5) comprises Test Switchboard (TEST) and test resistance (Rtest); described Test Switchboard (TEST) connect with test resistance (Rtest) after one end with pass the live wire L output of major loop instrument transformer and be electrically connected, the other end is electrically connected with zero line N input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410826097.1A CN104505668A (en) | 2014-12-26 | 2014-12-26 | Voltage-current hybrid leakage protective plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410826097.1A CN104505668A (en) | 2014-12-26 | 2014-12-26 | Voltage-current hybrid leakage protective plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104505668A true CN104505668A (en) | 2015-04-08 |
Family
ID=52947399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410826097.1A Pending CN104505668A (en) | 2014-12-26 | 2014-12-26 | Voltage-current hybrid leakage protective plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104505668A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108288785A (en) * | 2018-04-07 | 2018-07-17 | 佛山市顺德区信辉达电子有限公司 | Three pole break-make leakage protecting plugs |
| CN108536190A (en) * | 2018-06-08 | 2018-09-14 | 嘉兴福气多温控床有限公司 | Noval temp.-control |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040070895A1 (en) * | 2002-10-09 | 2004-04-15 | Gershen Bernard J. | Leakage current detection interrupter extension cord with cord diagnostics and/or inadvertent ground-to-neutral detection |
| CN201294366Y (en) * | 2008-08-21 | 2009-08-19 | 佛山市顺德区信辉达电子有限公司 | Creepage protector combining with power-supply plug |
| CN102354868A (en) * | 2011-08-09 | 2012-02-15 | 刘睿刚 | Electric leakage protection plug |
| CN103474955A (en) * | 2013-09-27 | 2013-12-25 | 余姚市嘉荣电子电器有限公司 | Earth leakage protection plug |
| CN204464646U (en) * | 2014-12-26 | 2015-07-08 | 佛山市顺德区信辉达电子有限公司 | Electric current and voltage mixed type leakage protecting plug |
-
2014
- 2014-12-26 CN CN201410826097.1A patent/CN104505668A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040070895A1 (en) * | 2002-10-09 | 2004-04-15 | Gershen Bernard J. | Leakage current detection interrupter extension cord with cord diagnostics and/or inadvertent ground-to-neutral detection |
| CN201294366Y (en) * | 2008-08-21 | 2009-08-19 | 佛山市顺德区信辉达电子有限公司 | Creepage protector combining with power-supply plug |
| CN102354868A (en) * | 2011-08-09 | 2012-02-15 | 刘睿刚 | Electric leakage protection plug |
| CN103474955A (en) * | 2013-09-27 | 2013-12-25 | 余姚市嘉荣电子电器有限公司 | Earth leakage protection plug |
| CN204464646U (en) * | 2014-12-26 | 2015-07-08 | 佛山市顺德区信辉达电子有限公司 | Electric current and voltage mixed type leakage protecting plug |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108288785A (en) * | 2018-04-07 | 2018-07-17 | 佛山市顺德区信辉达电子有限公司 | Three pole break-make leakage protecting plugs |
| CN108288785B (en) * | 2018-04-07 | 2023-10-24 | 佛山市顺德区信辉达电子有限公司 | Tripolar on-off leakage protection plug |
| CN108536190A (en) * | 2018-06-08 | 2018-09-14 | 嘉兴福气多温控床有限公司 | Noval temp.-control |
| CN108536190B (en) * | 2018-06-08 | 2024-02-09 | 嘉兴福气多温控床有限公司 | Temperature controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104505667A (en) | Voltage conversion type leakage protection plug | |
| CN102544930A (en) | Leakage protection plug | |
| CN102709901B (en) | Current transformer over-voltage protection method and device | |
| CN103560479A (en) | Load circuit fault detection circuit and method applied to breaker reclosing | |
| CN100517896C (en) | Steering circuit for earthing fault breaker | |
| CN203722205U (en) | Overvoltage and electric leakage protection circuit | |
| CN104600663A (en) | Voltage-current hybrid leakage protection plug | |
| CN104901089B (en) | Change voltage-type leakage protecting plug | |
| CN203522122U (en) | Load line fault detection circuit applied to circuit breaker reclosing | |
| CN201181835Y (en) | Multifunctional earth-leakage protective equipment | |
| CN104377647B (en) | leakage protection circuit | |
| CN103887660B (en) | The leakage protecting plug that three poles and two poles can switch mutually | |
| CN204696376U (en) | A kind of changing voltage type leakage protecting plug | |
| CN104505668A (en) | Voltage-current hybrid leakage protective plug | |
| CN201294366Y (en) | Creepage protector combining with power-supply plug | |
| CN203491680U (en) | Automatic reset electric leakage overvoltage/undervoltage protection circuit | |
| CN204464646U (en) | Electric current and voltage mixed type leakage protecting plug | |
| CN204424616U (en) | Voltage transitions type leakage protecting plug | |
| CN204903715U (en) | Many functional switch power test operation platform | |
| CN204967234U (en) | Multi -functional residual current operated circuit breaker circuit | |
| CN204316071U (en) | Electric current and voltage mixed type leakage protecting plug | |
| CN204205560U (en) | leakage protection circuit | |
| CN203826704U (en) | Tripolar-and-dipolar mutually switchable earth leakage protection plug | |
| CN204992530U (en) | Three -phase leakage protection circuit | |
| CN104901090B (en) | A kind of conversion voltage-type leakage protecting plug |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150408 |