CN2512144Y - Plug style leakage protector - Google Patents
Plug style leakage protector Download PDFInfo
- Publication number
- CN2512144Y CN2512144Y CN 01254811 CN01254811U CN2512144Y CN 2512144 Y CN2512144 Y CN 2512144Y CN 01254811 CN01254811 CN 01254811 CN 01254811 U CN01254811 U CN 01254811U CN 2512144 Y CN2512144 Y CN 2512144Y
- Authority
- CN
- China
- Prior art keywords
- electromagnet
- thyristor
- winding
- termination
- reset 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a plug style leakage protector, which comprises a commuting circuit, a mutual inductor, a main electromagnet, a leakage electromagnet, a reset switch and a main contact. The utility model is characterized in that a power is connected with the commuting circuit and the main contact in parallel, while the other end of the main contact is connected with a load. The connecting line of the main contact and the load crosses the mutual inductor. One end of the commuting circuit is connected with the reset switch, while the reset switch is connected a micro switch, a maintaining coil and the leakage electromagnet in parallel. The other end of the leakage electromagnet is connected with a thyristor, while the other end of the thyristor is connected in parallel with the other ends of the maintaining coil, a pull-in coil and the commuting circuit. The other end of the pull-in coil is connected with the micro switch. The control end of the thyristor is connected with the output end of a control circuit, and the input end of the control circuit is connected with the mutual inductor. The utility model has the advantages that the plug style leakage protector works with reliability without heat emission of the coils working for a long time, thereby ensuring safe power utilization.
Description
Technical field
The utility model relates to a kind of earth leakage protective device, particularly a kind of plug-type earth leakage protective device.
Background technology
Present earth leakage protective device 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, and electricity consumption hidden danger has taken place.
Summary of the invention
The purpose of this utility model is to solve mechanical type earth leakage protective device in the prior art, just can not provide earth leakage protective and another kind is an electromagnetism combined floodgate formula when single line cuts off the power supply, and electromagnet is switched on for a long time, and coil heating is serious, and the problem of electricity consumption hidden danger easily takes place.Technical solutions of the utility model design plug-type earth leakage protective device; comprise rectification circuit; instrument transformer; main electromagnet; the electric leakage electromagnet; reset switch; main contacts; it is characterized in that: power supply also connects rectification circuit and main contacts; another termination load of main contacts; the connecting line of main contacts and load passes instrument transformer; rectification circuit one termination reset switch, reset switch also connects sensitive switch; hold-in winding; the electric leakage electromagnet, the electric leakage electromagnet is the termination thyristor in addition; hold-in winding is held and connect to thyristor in addition; pull-in winding; rectification circuit is end in addition; pull-in winding is the termination sensitive switch in addition, 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.
Description of drawings
Accompanying drawing is a circuit theory schematic diagram of the present utility model,
Comprise rectification circuit 1 among the embodiment figure, instrument transformer 2, main electromagnet 3, electric leakage electromagnet 4, reset switch 5, main contacts 6, it is characterized in that: power supply 7 also connects rectification circuit 1 and main contacts 6, main contacts 6 another termination loads 9, main contacts 6 passes instrument transformer 2 with the connecting line 10 of load 9, rectification circuit 1 one termination reset switches 5, reset switch 5 also connects sensitive switch 11, hold-in winding 12, electric leakage electromagnet 4, electric leakage electromagnet 4 is termination thyristor 13 in addition, hold-in winding 12 is held and connect to thyristor 13 in addition, pull-in winding 14, rectification circuit 1 is end in addition, pull-in winding 14 is termination sensitive switch 11 in addition, control end 15 connection control circuits 8 outputs of thyristor 13, control circuit 8 input termination instrument transformers 2.When powering on, pull-in winding 14 gets electric, main electromagnet 3 adhesives, main contacts 6 closures, power supply 7 is connected with load 9, and this moment, normally closed sensitive switch 11 disconnected owing to the adhesive of main electromagnet 3, pull-in winding 14 dead electricity, but hold-in winding 12 still has little electric current to keep, and can guarantee the adhesive of main electromagnet 3.When electric leakage takes place when; pass the current imbalance on the connecting line 10 of instrument transformer 2; instrument transformer 2 has signal, handles through control circuit 8 and sends the control end 15 that controls signal to thyristor 13, and thyristor 13 triggers; 4 work of electric leakage electromagnet; reset switch 5 is disconnected, the release of hold-in winding 12 dead electricity main electromagnets 3, main contacts 6 disconnects; cut off being connected of power supply 7 and load 9, finished earth leakage protective.
Claims (1)
- The plug-type earth leakage protective device; comprise rectification circuit; instrument transformer; main electromagnet; the electric leakage electromagnet; reset switch; main contacts; it is characterized in that: power supply also connects rectification circuit and main contacts; another termination load of main contacts; the connecting line of main contacts and load passes instrument transformer; rectification circuit one termination reset switch, reset switch also connects sensitive switch; hold-in winding; the electric leakage electromagnet, the electric leakage electromagnet is the termination thyristor in addition; hold-in winding is held and connect to thyristor in addition; pull-in winding; rectification circuit is end in addition; pull-in winding is the termination sensitive switch in addition, 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 01254811 CN2512144Y (en) | 2001-11-21 | 2001-11-21 | Plug style leakage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01254811 CN2512144Y (en) | 2001-11-21 | 2001-11-21 | Plug style leakage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2512144Y true CN2512144Y (en) | 2002-09-18 |
Family
ID=33664058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01254811 Expired - Lifetime CN2512144Y (en) | 2001-11-21 | 2001-11-21 | Plug style leakage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2512144Y (en) |
-
2001
- 2001-11-21 CN CN 01254811 patent/CN2512144Y/en not_active Expired - Lifetime
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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: 20111121 Granted publication date: 20020918 |