CN206712446U - A kind of electromagnetic leakage protection circuit - Google Patents
A kind of electromagnetic leakage protection circuit Download PDFInfo
- Publication number
- CN206712446U CN206712446U CN201720378510.1U CN201720378510U CN206712446U CN 206712446 U CN206712446 U CN 206712446U CN 201720378510 U CN201720378510 U CN 201720378510U CN 206712446 U CN206712446 U CN 206712446U
- Authority
- CN
- China
- Prior art keywords
- leakage
- output interface
- zero sequence
- sequence current
- switch
- 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.)
- Active
Links
Classifications
-
- 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
- H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Breakers (AREA)
Abstract
The utility model discloses a kind of electromagnetic leakage protection circuit, including shell, exchange input interface is provided with the shell and exchanges output interface, the exchange input interface is provided with leakage switch between output interface with exchanging, the leakage switch is used for the zero sequence current mutual inductor for detecting leakage current with exchanging to be provided between output interface to be enclosed on AC power cord, diode D1 is connected between the output end of zero sequence current mutual inductor two, the diode D1 is connected in parallel the leakage current size of with good grounds zero sequence current mutual inductor detection to control the tripping coil L1 that leakage switch disconnects, realize unrelated with supply voltage value, the disconnecting power switch when electrical leakage reaches setting value.
Description
[technical field]
It the utility model is related to a kind of electromagnetic leakage protection circuit.
[background technology]
At present, mobile leakage protector on the market is largely the earth leakage protective device of electronic leakage protection circuit,
But it is exactly when input supply voltage under-voltage, even if there are electric leakage feelings that the earth leakage protective device of electronic type, which has the defects of its is fatal,
Escape power-off will not also occur for condition, protection device, and now personal safety cannot ensure, and transistor withstand shocks ability compared with
Weak, environment resistant interference is poor；Electronic leakage protector needs the working power aided in simultaneously, and leakage current characteristic is easily by operating voltage
The influence of fluctuation；On the other hand, when main circuit phase shortage, earth leakage protective device can lose defencive function.
[utility model content]
The utility model overcomes the deficiency of above-mentioned technology, there is provided and it is a kind of unrelated with supply voltage value, when electrical leakage reaches
To the electromagnetic leakage protection circuit of disconnecting power switch during setting value.
To achieve the above object, the utility model employs following technical proposal：
A kind of electromagnetic leakage protection circuit, including shell 1, be provided with the shell 1 exchange input interface 2 with exchange it is defeated
Outgoing interface 3, the exchange input interface 2 are provided with leakage switch 4 between output interface 3 with exchanging, and the leakage switch 4 is with exchanging
It is provided with to be enclosed between output interface 3 and is used for the zero sequence current mutual inductor 5 for detecting leakage current on AC power cord, the zero sequence electricity
Diode D1, the diode D1 are connected between 5 liang of output ends of current transformer and is connected in parallel with good grounds zero sequence current mutual inductor 5
The leakage current size of detection come control leakage switch 4 disconnect tripping coil L1.
The input of zero sequence current mutual inductor 5 one is connected with test switch 6, the other end of test switch 6 and zero line
Connection, 5 another input of zero sequence current mutual inductor are connected by resistance R1 with live wire.
The exchange input interface 2 includes zero line input interface 21 and live wire input interface 22, and the exchange output connects
Mouth 3 includes zero line output interface 31 and live wire output interface 32.
Thermistor MOV1 is connected between live wire and zero line.
The beneficial effects of the utility model are：
Electric leakage power-off work of the present utility model is unrelated with the magnitude of voltage of input power, only needs zero sequence current mutual inductor to detect
When reaching setting value to electrical leakage, leakage switch disconnects, and cuts off the electricity supply, and preferably protects the personal safety of user, while this reality
Strong with the new ability of withstanding shocks, environment resistant interference is strong, without the working power assisted a ruler in governing a country, not by operating voltage influence of fluctuations, i.e.,
Make main circuit but phase when, the utility model leakage protection circuit also can normal work.
[brief description of the drawings]
Fig. 1 is the utility model schematic diagram.
[embodiment]
It is described in further detail below in conjunction with the accompanying drawings with embodiment of the present utility model：
As shown in figure 1, a kind of electromagnetic leakage protection circuit, including shell 1, the shell 1 is interior to be connect provided with exchange input
Mouthfuls 2 and output interface 3 is exchanged, the input interface 2 that exchanges is provided with leakage switch 4, the electric leakage between output interface 3 with exchanging
Switch 4 is provided with the zero sequence current mutual inductor being enclosed on AC power cord for detecting leakage current between output interface 3 with exchange
5, diode D1, the diode D1, which are connected with, between described 5 liang of output ends of zero sequence current mutual inductor is connected in parallel with good grounds zero
Sequence current transformer 5 detect leakage current size come control leakage switch 4 disconnect tripping coil L1.
Wherein, the exchange input interface 2 includes zero line input interface 21 and live wire input interface 22, and the exchange is defeated
Outgoing interface 3 includes zero line output interface 31 and live wire output interface 32, and thermistor MOV1 is connected between live wire and zero line.
Operation principle is as follows：
Press leakage switch 4 to work, when leaking electricity, leakage current produces an induced electricity by zero sequence current mutual inductor 5
Stream, induced-current is sent on tripping coil L1 through diode D1 and is produced as electromagnetic induction power, when induced-current reaches setting value,
Electromagnetic induction power driving electromagnetic release mechanism work, disconnects leakage switch 4, cuts off the electricity supply caused by tripping coil L1.
The input of zero sequence current mutual inductor 5 one is connected with test switch 6, the other end of test switch 6 and zero line
Connection, 5 another input of zero sequence current mutual inductor is connected by resistance R1 with live wire, for testing leakage protection circuit energy
No normal work, after leakage switch 4 presses work, then trigger test switch 6 and form short circuit, short circuit current passes through zero-sequence current
An induced-current for exceeding setting value is produced during transformer 5, if electromagnetic induction power driving electromagnetism takes off caused by tripping coil L1
Buckle mechanism works, and disconnects leakage switch 4, cuts off the electricity supply, then leakage protection circuit energy normal work, otherwise leakage protection circuit goes out
Existing failure.
Claims (4)
- A kind of 1. electromagnetic leakage protection circuit, it is characterised in that：Exchange input is provided with including shell (1), in the shell (1) Interface (2) with exchange output interface (3), the exchange input interface (2) is provided with leakage switch between output interface (3) with exchanging (4), the leakage switch (4) is used to detect leakage current with exchanging to be provided between output interface (3) to be enclosed on AC power cord Zero sequence current mutual inductor (5), be connected with diode D1, two pole between the output end of zero sequence current mutual inductor (5) two What the leakage current size that pipe D1 is connected in parallel with good grounds zero sequence current mutual inductor (5) detection disconnected to control leakage switch (4) Tripping coil L1.
- A kind of 2. electromagnetic leakage protection circuit according to claim 1, it is characterised in that：The zero sequence current mutual inductor (5) one inputs are connected with test switch (6), and test switch (6) other end is connected with zero line, the zero sequence current mutual inductance Device (5) another input is connected by resistance R1 with live wire.
- A kind of 3. electromagnetic leakage protection circuit according to claim 1, it is characterised in that：The exchange input interface (2) zero line input interface (21) and live wire input interface (22) are included, the exchange output interface (3) includes zero line output Interface (31) and live wire output interface (32).
- A kind of 4. electromagnetic leakage protection circuit according to claim 3, it is characterised in that：Connected between live wire and zero line There is thermistor MOV1.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720378510.1U CN206712446U (en) | 2017-04-12 | 2017-04-12 | A kind of electromagnetic leakage protection circuit |
| PCT/CN2017/115426 WO2018188364A1 (en) | 2017-04-12 | 2017-12-11 | Electromagnetic leakage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720378510.1U CN206712446U (en) | 2017-04-12 | 2017-04-12 | A kind of electromagnetic leakage protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206712446U true CN206712446U (en) | 2017-12-05 |
Family
ID=60455789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720378510.1U Active CN206712446U (en) | 2017-04-12 | 2017-04-12 | A kind of electromagnetic leakage protection circuit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN206712446U (en) |
| WO (1) | WO2018188364A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018188364A1 (en) * | 2017-04-12 | 2018-10-18 | 中山市开普电器有限公司 | Electromagnetic leakage protection circuit |
| CN108695820A (en) * | 2018-07-21 | 2018-10-23 | 朱德锋 | Anti-reverse electrical ground protection system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453592Y (en) * | 2000-11-08 | 2001-10-10 | 张友良 | Multi-functional and electric-magnetic type protective switch for three phase motor |
| CN2671196Y (en) * | 2003-11-20 | 2005-01-12 | 潘家源 | Leakage protector with voltage monitoring control |
| CN205595761U (en) * | 2016-05-13 | 2016-09-21 | 哈尔滨理工大学 | Domestic electric leakage overvoltage protector |
| CN206712446U (en) * | 2017-04-12 | 2017-12-05 | 中山市开普电器有限公司 | A kind of electromagnetic leakage protection circuit |
-
2017
- 2017-04-12 CN CN201720378510.1U patent/CN206712446U/en active Active
- 2017-12-11 WO PCT/CN2017/115426 patent/WO2018188364A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018188364A1 (en) * | 2017-04-12 | 2018-10-18 | 中山市开普电器有限公司 | Electromagnetic leakage protection circuit |
| CN108695820A (en) * | 2018-07-21 | 2018-10-23 | 朱德锋 | Anti-reverse electrical ground protection system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018188364A1 (en) | 2018-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103579992B (en) | Voltage type leakage protection power line over-current protection device for electric heater | |
| CN104993332B (en) | Miniature earth leakage protective socket | |
| CN104377647B (en) | leakage protection circuit | |
| CN206712446U (en) | A kind of electromagnetic leakage protection circuit | |
| CN204967236U (en) | Leakage protector | |
| CN104577971A (en) | Outage trip protection plug | |
| CN202917763U (en) | Electric leakage detection protection plug | |
| CN201138737Y (en) | Multifunctional leakage protecting equipment preventing earth wire to be charged and alarming | |
| CN201181835Y (en) | Multifunctional earth-leakage protective equipment | |
| CN203536652U (en) | Electric leakage protection plug with overtemperature detection | |
| CN103887660B (en) | The leakage protecting plug that three poles and two poles can switch mutually | |
| CN204012649U (en) | The earth leakage protective device of adjustable sensitivity | |
| CN106684820A (en) | Open circuit automatic protection device for secondary circuit of high voltage current transformer | |
| CN206712447U (en) | A kind of leakage protection circuit with overvoltage protection | |
| CN201515205U (en) | Earth leakage checking protective circuit | |
| CN204131087U (en) | Earth leakage protective device | |
| CN102842889B (en) | One is tape voltage protection with sensitivity | |
| CN103066456B (en) | Protective plug capable of checking leakage of electricity | |
| CN201402963Y (en) | Half-wave rectification type earth leakage detection protecting circuit | |
| CN204992530U (en) | Three -phase leakage protection circuit | |
| CN103474955A (en) | Earth leakage protection plug | |
| CN204349419U (en) | Power-off trip protection plug | |
| CN204205558U (en) | With the leakage protecting plug that ground wire high voltage detects | |
| CN201682264U (en) | Leakage protector | |
| CN203326559U (en) | Electric leakage protection plug circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |