CN203166620U - Single-phase electric leakage switch capable of automatically changing phase sequence - Google Patents
Single-phase electric leakage switch capable of automatically changing phase sequence Download PDFInfo
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- CN203166620U CN203166620U CN 201320041519 CN201320041519U CN203166620U CN 203166620 U CN203166620 U CN 203166620U CN 201320041519 CN201320041519 CN 201320041519 CN 201320041519 U CN201320041519 U CN 201320041519U CN 203166620 U CN203166620 U CN 203166620U
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Abstract
A single-phase electric leakage switch capable of automatically changing a phase sequence consists of an electric-leakage detection circuit and a bistable circuit, wherein the electric-leakage detection circuit consists of a detection component, an intermediate amplification link, an execution component and a test component; the detection component consists of a zero-sequence current transformer LH; and the bistable circuit consists of an NE555 integrated block, a DC power supply circuit and a trigger circuit. The advantages of the switch provided by the utility model are that when an output terminal of the electric leakage switch of electricity consumed clients generates one-phase electric leakage, the apparatus automatically changes the power-supply phase sequence of the output terminal, so that the electric leakage switch can guarantee users' power supply reliability under a condition of continuously guaranteeing an electric-leakage protective effect, and operational percentage of the electric leakage switch is raised.
Description
Technical field
The utility model relates to the electric switch technical field, and concrete is a kind of single-phase leakage switch of automatic change phase sequence.
Background technology
At present, the home-use earth leakage circuit-breaker operational percentage of resident is low, mainly is because of due to the electric leakage of the indoor circuit of electricity consumer or electric equipment.Because electric leakage, after leakage switch disconnected, resident's leakage switch that can not close made family not switch on.Therefore a lot of users just look for electrician or oneself that leakage switch is removed, direct wiring, just the family the inside has lost earth leakage protective like this, and if meet accident the serious of consequence ten minutes, or accidents such as initiation is hurted sb.'s feelings, electrical fire.
Summary of the invention
At the problem of above-mentioned existence, the purpose of this utility model provides that a kind of to change the output of phase line and the neutral line automatically separate, guarantees the single-phase leakage switch of automatic change phase sequence of user's power supply reliability.
The technical solution of the utility model is: the single-phase leakage switch that changes phase sequence automatically, be made up of electric-leakage detection circuit and bistable circuit, it is characterized in that: described electric-leakage detection circuit is made up of detecting element, middle amplifying element, executive component and test element; Detecting element is made up of zero sequence current mutual inductor LH, when person electric shock or electric equipment electric leakage take place when, zero sequence current mutual inductor LH secondary side produces induced voltage, building-out capacitor C6 and resistance R 5 are connected with zero sequence current mutual inductor LH auxiliary winding and are formed series resonance, the control utmost point of amplifying element element unidirectional controllable silicon S CR in the middle of this induced voltage is added in, when getting an electric shock or leakage current when reaching setting, zero sequence current mutual inductor LH secondary side induced voltage triggers the control utmost point of unidirectional controllable silicon S CR, unidirectional controllable silicon S CR conducting, the dc terminal of short circuit bridge rectifier diode D5, the interchange end conducting of bridge rectifier diode D5, be connected on breaking coil K that bridge rectifier diode D5 exchanges end and obtain adhesive behind 220 volts of alternating voltages, promote breaking coil K contact and disconnect 220 volts of input power supplys, thus the protection person and device security; Described bistable electro route NE555 integrated package, DC power-supply circuit and circuits for triggering are formed; No. 1 pin of NE555 integrated package connects the 12-volt dc power supply negative pole, No. 2 pin meets divider resistance R2, R3, the series arm of No. 3 pin connecting resistance R4, capacitor C 5,4, No. 8 pin connect the 12-volt dc power supply positive pole, No. 5 pin meets shunt capacitance C4,6, No. 3 pin are NE555 integrated package trigger electrode, and No. 7 pin is succeeded electrical equipment J2 coil, and diode D2, D3 are amplitude limit, protective circuit; DC power-supply circuit is 12 volts of direct currents through bridge rectifier D 1 full-wave rectification after by transformer B single-phase 220 volts of alternating currents being reduced to 15V, after filter capacitor C3 filtering, gives the power supply of NE555 integrated package again; Circuits for triggering are 220 volts of alternating voltage step-downs about 14 volts by decompression capacitor C1, bleeder resistance R1, are 12 volts of direct voltages through bridge rectifier D 4 rectifications, give relay J 1 coil power supply again after filter capacitor C2 filtering.
Advantage of the present utility model: when electricity consumption client leakage switch output generation one is leaked electricity mutually; this device changes the output end power phase sequence automatically; make leakage switch under the situation that continues the effect of assurance earth leakage protective, can guarantee user's power supply reliability again, improved the leakage switch operational percentage.
Description of drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
Now by reference to the accompanying drawings, the utility model is further specified.
As shown in Figure 1, electric-leakage detection circuit is made up of detecting element, middle amplifying element, executive component and test element; Detecting element is made up of zero sequence current mutual inductor LH, when person electric shock or electric equipment electric leakage take place when, zero sequence current mutual inductor LH secondary side produces induced voltage, building-out capacitor C6 and resistance R 5 are connected with zero sequence current mutual inductor LH auxiliary winding and are formed series resonance, the control utmost point of amplifying element element unidirectional controllable silicon S CR in the middle of this induced voltage is added in, when getting an electric shock or leakage current when reaching setting, zero sequence current mutual inductor LH secondary side induced voltage triggers the control utmost point of unidirectional controllable silicon S CR, unidirectional controllable silicon S CR conducting, the dc terminal of short circuit bridge rectifier diode D5, the interchange end conducting of bridge rectifier diode D5, be connected on breaking coil K that bridge rectifier diode D5 exchanges end and obtain adhesive behind 220 volts of alternating voltages, promote breaking coil K contact and disconnect 220 volts of input power supplys, thus the protection person and device security; Described bistable electro route NE555 integrated package, DC power-supply circuit and circuits for triggering are formed; No. 1 pin of NE555 integrated package connects the 12-volt dc power supply negative pole, No. 2 pin meets divider resistance R2, R3, the series arm of No. 3 pin connecting resistance R4, capacitor C 5,4, No. 8 pin connect the 12-volt dc power supply positive pole, No. 5 pin meets shunt capacitance C4,6, No. 3 pin are NE555 integrated package trigger electrode, and No. 7 pin is succeeded electrical equipment J2 coil, and diode D2, D3 are amplitude limit, protective circuit; DC power-supply circuit is 12 volts of direct currents through bridge rectifier D 1 full-wave rectification after by transformer B single-phase 220 volts of alternating currents being reduced to 15V, after filter capacitor C3 filtering, gives the power supply of NE555 integrated package again; Circuits for triggering are 220 volts of alternating voltage step-downs about 14 volts by decompression capacitor C1, bleeder resistance R1, are 12 volts of direct voltages through bridge rectifier D 4 rectifications, give relay J 1 coil power supply again after filter capacitor C2 filtering.
Operation principle: when the indoor circuit of electricity consumer or electric equipment electric leakage; this device leakage protection circuit tripping operation outage; when the user closes this switch again; relay J 1 coil gets electric adhesive; relay J 1 coil normally opened contact closure; 3 of NE555 integrated package; trigger the NE555 integrated package after No. 6 pin closures; make No. 7 pin of NE555 integrated package become low level; relay J 2 coil conductings get electric back adhesive; the contact J2-2 adhesive of relay J 2 coils; J2-1 disconnects; the phase sequence of 220 volts of AC power outputs changes, and namely the phase line (live line) of original electric leakage and the neutral line (zero line) is exchanged automatically, and the phase line (live line) of original electric leakage becomes the neutral line (zero line) automatically; because of the neutral line (zero line) and the earth equipotential; electric-leakage detection circuit no longer moves, and this switch can be powered by bringing normally into operation again, has guaranteed the power supply continuity of electricity consumer.
Claims (1)
1. change the single-phase leakage switch of phase sequence automatically, be made up of electric-leakage detection circuit and bistable circuit, it is characterized in that: described electric-leakage detection circuit is made up of detecting element, middle amplifying element, executive component and test element; Detecting element is made up of zero sequence current mutual inductor LH, when person electric shock or electric equipment electric leakage take place when, zero sequence current mutual inductor LH secondary side produces induced voltage, building-out capacitor C6 and resistance R 5 are connected with zero sequence current mutual inductor LH auxiliary winding and are formed series resonance, the control utmost point of amplifying element element unidirectional controllable silicon S CR in the middle of this induced voltage is added in, when getting an electric shock or leakage current when reaching setting, zero sequence current mutual inductor LH secondary side induced voltage triggers the control utmost point of unidirectional controllable silicon S CR, unidirectional controllable silicon S CR conducting, the dc terminal of short circuit bridge rectifier diode D5, the interchange end conducting of bridge rectifier diode D5, be connected on breaking coil K that bridge rectifier diode D5 exchanges end and obtain adhesive behind 220 volts of alternating voltages, promote breaking coil K contact and disconnect 220 volts of input power supplys, thus the protection person and device security; Described bistable electro route NE555 integrated package, DC power-supply circuit and circuits for triggering are formed; No. 1 pin of NE555 integrated package connects the 12-volt dc power supply negative pole, No. 2 pin meets divider resistance R2, R3, the series arm of No. 3 pin connecting resistance R4, capacitor C 5,4, No. 8 pin connect the 12-volt dc power supply positive pole, No. 5 pin meets shunt capacitance C4,6, No. 3 pin are NE555 integrated package trigger electrode, and No. 7 pin is succeeded electrical equipment J2 coil, and diode D2, D3 are amplitude limit, protective circuit; DC power-supply circuit is 12 volts of direct currents through bridge rectifier D 1 full-wave rectification after by transformer B single-phase 220 volts of alternating currents being reduced to 15V, after filter capacitor C3 filtering, gives the power supply of NE555 integrated package again; Circuits for triggering are 220 volts of alternating voltage step-downs about 14 volts by decompression capacitor C1, bleeder resistance R1, are 12 volts of direct voltages through bridge rectifier D 4 rectifications, give relay J 1 coil power supply again after filter capacitor C2 filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041519 CN203166620U (en) | 2013-01-25 | 2013-01-25 | Single-phase electric leakage switch capable of automatically changing phase sequence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041519 CN203166620U (en) | 2013-01-25 | 2013-01-25 | Single-phase electric leakage switch capable of automatically changing phase sequence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203166620U true CN203166620U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320041519 Expired - Fee Related CN203166620U (en) | 2013-01-25 | 2013-01-25 | Single-phase electric leakage switch capable of automatically changing phase sequence |
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| CN (1) | CN203166620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107658846A (en) * | 2017-11-09 | 2018-02-02 | 无锡华润矽科微电子有限公司 | A type low-voltage leakage protector circuits |
-
2013
- 2013-01-25 CN CN 201320041519 patent/CN203166620U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107658846A (en) * | 2017-11-09 | 2018-02-02 | 无锡华润矽科微电子有限公司 | A type low-voltage leakage protector circuits |
| CN107658846B (en) * | 2017-11-09 | 2023-10-20 | 华润微集成电路(无锡)有限公司 | A-type low-voltage leakage protector circuit |
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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: 20130828 Termination date: 20150125 |
|
| EXPY | Termination of patent right or utility model |