CN203536934U - Electric leakage protection plug - Google Patents
Electric leakage protection plug Download PDFInfo
- Publication number
- CN203536934U CN203536934U CN201320604017.9U CN201320604017U CN203536934U CN 203536934 U CN203536934 U CN 203536934U CN 201320604017 U CN201320604017 U CN 201320604017U CN 203536934 U CN203536934 U CN 203536934U
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- magnetic induction
- induction loop
- switch
- secondary coil
- resistance
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Abstract
The utility model discloses an electric leakage protection plug, and the plug comprises a rectifier, a release, an amplifier, a test circuit, a first magnetic induction loop, a voltage dropping resistor, and a silicon controlled rectifier. The plug also comprises a second magnetic induction loop and a third magnetic induction loop. Circuit conversion devices are respectively disposed between the first magnetic induction loop and the second magnetic induction loop, and between the first magnetic induction loop and the secondary coil of the third magnetic induction loop. The secondary coil of the second magnetic induction loop is provided with a second resistor, and the primary coil of the third magnetic induction loop is provided with a third resistor. According to the utility model, a function of an electric leakage protection plug is added, thereby enabling the plug provided by the utility model to achieve various modes of electric leakage protection through selecting different magnetic induction loops, and avoiding error tripping caused by complex live situations of zero lines or ground wires of several families.
Description
Technical field
The utility model relates to electric security protector device field, particularly a kind of leakage protecting plug.
Background technology
The existing plug with earth wire live protector; as all-purpose leakage protection plug; except detecting between load phase, zero line, have or not leakage current; whether also detect ground wire has leakage current to pass through; when phase line, zero line or ground wire occur leakage current respectively or simultaneously, two magnetic test coils all can make release immediately phase, zero, ground wire all be disconnected, and cut off the electricity supply; thereby effectively ensured personal safety, therefore oneself is widely applied in household electrical appliance.
But above-mentioned all-purpose leakage protection plug is defectiveness also, because ground wire shares often; it is often with low-voltage, and the resistance of ground wire only has several ohm, according to Current calculation formula I=U/R; the circuit that flows to ground wire tens milliamperes to several peaces not etc., therefore easily cause mistrip.
Disclose a kind of leakage protecting plug that detects ground wire voltage mode before the utility model people, efficiently solved the problems referred to above, but some family because transformation station zero line there will be charged abnormal conditions, this also easily causes mistrip.
Utility model content
(1) technical problem that will solve
The purpose of this utility model will overcome above-mentioned shortcoming exactly, aims to provide a kind of leakage protecting plug.
(2) technical scheme
For addressing the above problem; the utility model proposes a kind of leakage protecting plug; comprise rectifier, release, amplifier, hookup, the first magnetic induction loop, dropping resistor and controllable silicon; it is characterized in that: also comprise the second magnetic induction loop and the 3rd magnetic induction loop; between the secondary coil of described the first magnetic induction loop and described the second magnetic induction loop and the 3rd magnetic induction loop, be provided with circuit conversion device; the secondary coil of described the second magnetic induction loop is provided with the second resistance, and the secondary coil of described the 3rd magnetic induction loop is provided with the 3rd resistance.
Further, between described silicon controlled trigger electrode and rectifier, be provided with electric capacity.
Further, between the primary coil of described the 3rd magnetic induction loop and ground wire, be provided with current limliting dropping resistor.
Further, described circuit conversion device comprises change over switch, described second resistance one end is connected with described the 3rd resistance one end, and the secondary coil of described the second magnetic induction loop is connected with described change over switch, and the secondary coil of described the 3rd magnetic induction loop is connected with described change over switch.
Further, described circuit conversion device comprises the first switch and second switch, described the second resistance connects described the first switch, described the 3rd resistance connects described the first switch, described the second magnetic induction loop secondary coil is connected described second switch with described the 3rd magnetic induction loop secondary coil, and described the first switch and described second switch are linked switch.
Further, between the secondary output end of described the first magnetic induction loop and amplifier, be provided with filter capacitor.
(3) beneficial effect
Compared with prior art; the utlity model has following advantage: the utility model has increased the function of leakage protecting plug; can be by selecting different magnetic induction loops to realize ground line current detection mode or ground wire voltage detection mode, avoided individual user family because of zero line or ground wire electrification situation is complicated causes mistrip.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the embodiment mono-of leakage protecting plug of the present utility model;
Fig. 2 is the circuit theory diagrams of the embodiment bis-of leakage protecting plug of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
Embodiment mono-
As shown in Figure 1, leakage protecting plug of the present utility model, comprise rectifier D1, release, amplifier IC, the hookup being formed by first resistance R 2 of mutually connecting and button switch K, dropping resistor R4 and controllable silicon SCR, also comprise the first magnetic induction loop ZCT1, the second magnetic induction loop ZCT2 and the 3rd magnetic induction loop ZCT3, between the secondary coil of described the first magnetic induction loop ZCT1 and described the second magnetic induction loop ZCT2 and the 3rd magnetic induction loop ZCT3, be provided with circuit conversion device, the secondary coil of described the second magnetic induction loop ZCT2 is provided with the second resistance R 1, the secondary coil of described the 3rd magnetic induction loop ZCT3 is provided with the 3rd resistance R 6.
Between the trigger electrode of described controllable silicon ZCR and rectifier D1, be provided with capacitor C 2.
Between the primary coil of described the 3rd magnetic induction loop ZCT3 and ground wire E, be provided with current limliting dropping resistor R5, prevent from the high voltage that produces because of between zero line N and ground wire E from causing the 3rd magnetic induction loop ZCT3 secondary coil also to induce high voltage, thereby make amplifier IC overload.
Described circuit conversion device comprises change over switch K1, described second resistance R 1 one end is connected with described the 3rd resistance R 6 one end, the secondary coil of described the second magnetic induction loop ZCT2 is connected with described change over switch K1, and the secondary coil of described the 3rd magnetic induction loop ZCT3 is connected with described change over switch K1.
Between the secondary output end of the first magnetic induction loop ZCT1 and amplifier IC, be provided with filter capacitor C1, play and regulate the electric current that flows to this circuit to walk effect.
Release is connected after circuit, through rectifier D1 rectification, through dropping resistor R4, is amplifier IC power supply.When change over switch K1 connects the second magnetic induction loop ZCT2, now detect ground wire E current conditions, in the present embodiment when ground wire E is charged while being greater than 30mA, the second magnetic induction loop ZCT2 produces induced current, and induced current is after amplifier IC, and the trigger electrode of controllable silicon SCR is charged, thereby make controllable silicon SCR conducting, now release two ends have formed circuit loop, thereby make release action, have disconnected circuit; When change over switch K1 connects the 3rd magnetic induction loop ZCT3, now both detected ground wire voltage situation, as ground wire E with zero line N is charged while being greater than 50V, the 3rd magnetic induction loop ZCT3 secondary coil produces induced current, and induced current is after amplifier IC, and the trigger electrode of controllable silicon SCR is charged, thereby make controllable silicon SCR conducting, now release two ends have formed circuit loop, thereby make release action, have disconnected circuit.The utility model has increased the function of leakage protecting plug, can be by selecting different magnetic induction loops to realize different earth leakage protective modes, avoided individual user family because of zero line or ground wire electrification situation is complicated causes mistrip.
Embodiment bis-
As shown in Figure 2, leakage protecting plug of the present utility model, comprise rectifier D1, release, amplifier IC, the hookup being formed by first resistance R 2 of mutually connecting and button switch K, dropping resistor R4 and controllable silicon SCR, also comprise the first magnetic induction loop ZCT1, the second magnetic induction loop ZCT2 and the 3rd magnetic induction loop ZCT3, between the secondary coil of described the first magnetic induction loop ZCT1 and described the second magnetic induction loop ZCT2 and the 3rd magnetic induction loop ZCT3, be provided with circuit conversion device, the secondary coil of described the second magnetic induction loop ZCT2 is provided with the second resistance R 1, the secondary coil of described the 3rd magnetic induction loop ZCT3 is provided with the 3rd resistance R 6.
Between the trigger electrode of described controllable silicon ZCR and rectifier D1, be provided with capacitor C 2.
Between the primary coil of described the 3rd magnetic induction loop ZCT3 and ground wire E, be provided with current limliting dropping resistor R5, prevent from the high voltage that produces because of between zero line N and ground wire E from causing the 3rd magnetic induction loop ZCT3 secondary coil also to induce high voltage, thereby make amplifier IC overload.
Described circuit conversion device comprises the first K switch 1 and second switch K2, described the second resistance R 1 connects described the first K switch 1, described the 3rd resistance R 6 connects described the first K switch 1, described the second magnetic induction loop ZCT2 secondary coil is connected described second switch K2 with described the 3rd magnetic induction loop ZCT3 secondary coil, and described the first K switch 1 and described second switch K2 are linked switch.
Between the secondary output end of the first magnetic induction loop ZCT1 and amplifier IC, be provided with filter capacitor C1, play and regulate the electric current that flows to this circuit to walk effect.
Release is connected after circuit, through rectifier D1 rectification, through dropping resistor R4, is amplifier IC power supply.When the first K switch 1 and second switch K2 connect the second magnetic induction loop ZCT2 simultaneously, now detect ground wire E current conditions, when ground wire E is charged while being greater than 30mA, the second magnetic induction loop ZCT2 produces induced current, and induced current is after amplifier IC, and the trigger electrode of controllable silicon SCR is charged, thereby make controllable silicon SCR conducting, now release two ends have formed circuit loop, thereby make release action, have disconnected circuit; When the first K switch 1 and second switch K2 connect the 3rd magnetic induction loop ZCT3 simultaneously, now both detected ground wire electric leakage situation, as ground wire E with zero line N is charged while being greater than 50V, the 3rd magnetic induction loop ZCT3 secondary coil produces induced current, and induced current is after amplifier IC, and the trigger electrode of controllable silicon SCR is charged, thereby make controllable silicon SCR conducting, now release two ends have formed circuit loop, thereby make release action, have disconnected circuit.The utility model has increased the function of leakage protecting plug, can be by selecting different magnetic induction loops to realize different earth leakage protective modes, avoided individual user family because of zero line or ground wire electrification situation is complicated causes mistrip.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (6)
1. a leakage protecting plug; comprise rectifier, release, amplifier, hookup, the first magnetic induction loop, dropping resistor and controllable silicon; it is characterized in that: also comprise the second magnetic induction loop and the 3rd magnetic induction loop; between the secondary coil of described the first magnetic induction loop and described the second magnetic induction loop and the 3rd magnetic induction loop, be provided with circuit conversion device; the secondary coil of described the second magnetic induction loop is provided with the second resistance, and the secondary coil of described the 3rd magnetic induction loop is provided with the 3rd resistance.
2. leakage protecting plug according to claim 1, is characterized in that: between described silicon controlled trigger electrode and rectifier, be provided with electric capacity.
3. leakage protecting plug according to claim 2, is characterized in that: between the primary coil of described the 3rd magnetic induction loop and ground wire, be provided with current limliting dropping resistor.
4. leakage protecting plug according to claim 3; it is characterized in that: described circuit conversion device comprises change over switch; described second resistance one end is connected with described the 3rd resistance one end; the secondary coil of described the second magnetic induction loop is connected with described change over switch, and the secondary coil of described the 3rd magnetic induction loop is connected with described change over switch.
5. leakage protecting plug according to claim 3; it is characterized in that: described circuit conversion device comprises the first switch and second switch; described the second resistance connects described the first switch; described the 3rd resistance connects described the first switch; described the second magnetic induction loop secondary coil is connected described second switch with described the 3rd magnetic induction loop secondary coil, and described the first switch and described second switch are linked switch.
6. according to leakage protecting plug described in claim 1 to 5 any one, it is characterized in that: between the secondary output end of described the first magnetic induction loop and amplifier, be provided with filter capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604017.9U CN203536934U (en) | 2013-09-27 | 2013-09-27 | Electric leakage protection plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604017.9U CN203536934U (en) | 2013-09-27 | 2013-09-27 | Electric leakage protection plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203536934U true CN203536934U (en) | 2014-04-09 |
Family
ID=50423110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320604017.9U Expired - Fee Related CN203536934U (en) | 2013-09-27 | 2013-09-27 | Electric leakage protection plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203536934U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2013
- 2013-09-27 CN CN201320604017.9U patent/CN203536934U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20190927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |