CN2645223Y - Male plug type creepage and circuit break protector - Google Patents
Male plug type creepage and circuit break protector Download PDFInfo
- Publication number
- CN2645223Y CN2645223Y CN 03210108 CN03210108U CN2645223Y CN 2645223 Y CN2645223 Y CN 2645223Y CN 03210108 CN03210108 CN 03210108 CN 03210108 U CN03210108 U CN 03210108U CN 2645223 Y CN2645223 Y CN 2645223Y
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- CN
- China
- Prior art keywords
- winding
- electromagnet
- control circuit
- terminal
- pull
- Prior art date
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- Expired - Lifetime
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Abstract
The utility model relates to a plug-leakage open circuit protection apparatus, comprising a rectifier circuit, a commutative inductor, a main electromagnet, a leakage electromagnet, a reset switch, a main contact double-throw switch and a suction winding control circuit. The utility model is characterized in that: the power is connected in parallel with the rectifier circuit and the input terminal of the main contact double-throw switches. The frequent off terminal of the main contact double-throw switch is connected with the suction winding control circuit. The connection line between the frequent on terminal of the main contact double-throw switches and the load pass through the commutative inductor. A terminal of the rectifier circuit is connected with the reset switch. The reset switch is connected in parallel with the suction winding, the keeping winding, and the leakage electromagnet. The other terminal of the leakage electromagnet is connected with a transistor and the other terminal of the transistor is connected in parallel with the keeping winding and the other terminal of the rectifier circuit. The other terminal of the suction winding is connected with the suction winding control circuit. The control terminal of the transistor is connected with the output terminal of the control circuit. The input terminal of the control circuit is connected with the commutative inductor. The utility model has the advantages of enabling the plug-leakage open circuit protection apparatus to work with reliability and enabling the work winding to be no heating in long working hours which ensures the safety of electricity.
Description
Technical field
The utility model relates to a kind of earth leakage protective device, particularly a kind of plug-type leakage, breaking protector.
Background technology
Present electric leakage action breaker protector generally is divided into two kinds, and the one, the mechanical type earth leakage protective device, it is to utilize electromagnet energising action, makes the circuit disjunction by tripping mechanism, but just can not provide earth leakage protective when single line cuts off the power supply.Another kind is an electromagnetism combined floodgate formula, and by electromagnet energising combined floodgate energized, when electric leakage took place, electromagnet outage dropout action separated circuit, and shortcoming is that electromagnet is switched on for a long time, and coil heating is serious, is easy to generate electricity consumption hidden danger.
Summary of the invention
The purpose of this utility model is to solve the existing problem of mechanical type earth leakage protective device in the prior art, provides a kind of reliable operation, the athermic plug-type leakage, breaking of the coil that works long hours protector.Technical solutions of the utility model design plug-type leakage, breaking protector; comprise rectification circuit; instrument transformer; main electromagnet; the electric leakage electromagnet; reset switch; the main contacts commutator; the pull-in winding control circuit; it is characterized in that: power supply also connects rectification circuit and main contacts commutator input; the normally closed termination pull-in winding of main contacts commutator control circuit; main contacts commutator Chang Kaiduan connects load; the connecting line of main contacts commutator Chang Kaiduan and load passes instrument transformer; rectification circuit one termination reset switch; reset switch also connects pull-in winding; hold-in winding; the electric leakage electromagnet; another termination thyristor of electric leakage electromagnet; the other end of hold-in winding and rectification circuit is held and connect to thyristor in addition; another termination pull-in winding control circuit of pull-in winding; the control end connection control circuit output of thyristor, control circuit input termination instrument transformer.The utility model has the advantages that to make plug-type earth leakage protective device reliable operation, the coil that works long hours does not generate heat, and ensures Electrical Safety.Particularly adopted unique pull-in winding control circuit to cooperate the main contacts commutator, simple in structure, reliable in action.
Description of drawings
Accompanying drawing is circuit theory diagrams of the present utility model.
Embodiment
Comprise rectification circuit 1 among the figure, instrument transformer 11, main electromagnet 4, electric leakage electromagnet 6, reset switch 2, main contacts commutator 13, pull-in winding control circuit 14, it is characterized in that: power supply 15 also connects rectification circuit 1 and main contacts commutator 13 inputs, main contacts commutator 13 normally closed termination pull-in winding control circuits 14, main contacts commutator 13 Chang Kaiduan connect load 10, the connecting line 12 of main contacts commutator 13 Chang Kaiduan and load 10 passes instrument transformer 11, rectification circuit 1 one termination reset switches 2, reset switch 2 also connects pull-in winding 3, hold-in winding 5, electric leakage electromagnet 6, electric leakage electromagnet 6 another termination thyristors 7, the other end of hold-in winding 5 and rectification circuit 1 is held and connect to thyristor 7 in addition, another termination pull-in winding control circuit 14 of pull-in winding 3, control end 8 connection control circuits 9 outputs of thyristor 7, control circuit 9 input termination instrument transformers 11.When powering on, press reset switch 2, pull-in winding 3 constitutes the loop through pull-in winding control circuit 14 and gets by main contacts commutator 13 normal-closed ends, main electromagnet 4 adhesives, main contacts commutator 13 closures, power supply 15 is connected with load 10, and this moment is because the adhesive of main electromagnet 4, main contacts commutator 13 normal-closed ends disconnect, pull-in winding 3 outages, but hold-in winding 5 still has little electric current to keep, and can guarantee the adhesive of main electromagnet 4.When electric leakage takes place when; pass the current imbalance on the connecting line 12 of instrument transformer 11; instrument transformer 11 has signal, handles through control circuit 9 and sends the control end 8 that controls signal to thyristor 7, and thyristor 7 triggers; 6 work of electric leakage electromagnet; reset switch 2 is disconnected, hold-in winding 5 outages, main contacts commutator 13 disconnects; cut off being connected of power supply 15 and load 10, finished earth leakage protective.
Owing to, only have hold-in winding 5 to have little electric current to keep, and pull-in winding 3 is not worked in the whole work period of plug-type leakage, breaking protector; so energy plug-type earth leakage protective device reliable operation, the coil that works long hours does not generate heat, and ensures Electrical Safety; the whole protecting device is simple in structure, reliable in action.
Claims (1)
- Plug-type leakage, breaking protector; comprise rectification circuit; instrument transformer; main electromagnet; the electric leakage electromagnet; reset switch; the main contacts commutator; the pull-in winding control circuit; it is characterized in that: power supply also connects rectification circuit and main contacts commutator input; the normally closed termination pull-in winding of main contacts commutator control circuit; main contacts commutator Chang Kaiduan connects load; the connecting line of main contacts commutator Chang Kaiduan and load passes instrument transformer; rectification circuit one termination reset switch; reset switch also connects pull-in winding; hold-in winding; the electric leakage electromagnet; another termination thyristor of electric leakage electromagnet; the other end of hold-in winding and rectification circuit is held and connect to thyristor in addition; another termination pull-in winding control circuit of pull-in winding; the control end connection control circuit output of thyristor, control circuit input termination instrument transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03210108 CN2645223Y (en) | 2003-08-27 | 2003-08-27 | Male plug type creepage and circuit break protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03210108 CN2645223Y (en) | 2003-08-27 | 2003-08-27 | Male plug type creepage and circuit break protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2645223Y true CN2645223Y (en) | 2004-09-29 |
Family
ID=34289251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03210108 Expired - Lifetime CN2645223Y (en) | 2003-08-27 | 2003-08-27 | Male plug type creepage and circuit break protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2645223Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269057A (en) * | 2013-05-20 | 2013-08-28 | 益而益(集团)有限公司 | Ground fault protection device |
-
2003
- 2003-08-27 CN CN 03210108 patent/CN2645223Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269057A (en) * | 2013-05-20 | 2013-08-28 | 益而益(集团)有限公司 | Ground fault protection device |
| CN103269057B (en) * | 2013-05-20 | 2016-03-30 | 益而益(集团)有限公司 | A kind of earth-fault protection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130827 Granted publication date: 20040929 |