CN1674191A - Earth leakage circuit breaker - Google Patents
Earth leakage circuit breaker Download PDFInfo
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- CN1674191A CN1674191A CN 200510064438 CN200510064438A CN1674191A CN 1674191 A CN1674191 A CN 1674191A CN 200510064438 CN200510064438 CN 200510064438 CN 200510064438 A CN200510064438 A CN 200510064438A CN 1674191 A CN1674191 A CN 1674191A
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Abstract
An electrical leakage breaker is prepared as adding two gate circuits in existing electrical leakage breaker; an OR - gate circuit comprises two series diodes being connected in sequence along conductive direction with one - way silicon control element, mechanical trip switch and electromagnetic coil; another gate circuit comprises three diodes with those diode cathodes being connected in conductive direction with three - phase power line of output line.
Description
The present invention relates to a kind of protective device of leaking electricity of preventing, especially when the outage of input power supply generation zero line, live wire outage, can both play a protective role.
At present, the structure of known residual current circuit breaker is made up of shell, mechanical release, switch, test knob, transducer and controller.Its operation principle is to pick up electric leakage signal by instrument transformer to reach rectification circuit, makes the conducting of switch thyristor to electromagnet apparatus, and the driving machinery release separates its switch, plays the earth leakage protective effect.But; certain phase firewire broken string or neutral line break can take place on incoming line; or in insure silk fusing of incoming line phase shortage, accident broken string appear; because the operating voltage of general residual current circuit breaker is taken at zero line and a certain phase firewire; as the arbitrary line outage in this two wires, earth leakage protective device all is in make position because of no operating voltage makes its switch, but two phase firewires still are in conducting state in addition; if electric leakage this moment, then protector can not play the earth leakage protective effect.
Is inoperable deficiency in order to overcome existing residual current circuit breaker at supply line's appearance broken string; the invention provides a kind of residual current circuit breaker; this residual current circuit breaker can not only just often shield in supply line, and still can play the earth leakage protective effect when the outage of live wire or zero line occurring in supply line.
The technical scheme that the present invention solves its technical problem employing is: four of input wires terminals are housed, four of output wiring terminals, one of earth terminal, one of test knob, one of switch knob, one of indication knob in the insulation crust outside.In insulation crust, the contact of four binding posts, four mechanical dropout switches four leads that are linked in sequence pass instrument transformer together, be electrically connected OR circuit, mechanical release electromagnet coil, one-way SCR element, the diode of forming by zero line, three diodes and be serially connected in gate circuit that three diodes on the output three-phase firewire form and be electrically connected and form the internal circuit operating voltage respectively with four lead-out terminals.Test knob, test resistance are in parallel with it, mutual inductor coil is connected electrically in the input of rectification circuit, the output head anode of rectification circuit is electrically connected with the control utmost point of one-way SCR element, negative pole is connected with the cathodic electricity of one-way SCR element, between the negative electrode of one-way SCR element and the control utmost point, be electrically connected an electrolytic capacitor, two diode series connection in the OR circuit, its tie point is electrically connected with another diode cathode, and the anode of this diode is electrically connected with earth terminal.When power consumption equipment leaks electricity; when person electric shock and electric current surpass set quota; mutual inductor coil is inducted and is become direct voltage after the alternating current pressuring meridian rectification circuit rectification; this voltage is more than or equal to the trigger voltage of one-way SCR element; be added between the control utmost point of one-way SCR element and the negative electrode and make its conducting; electric current is by the series diode of zero line in OR circuit; mechanical release electromagnet coil leaks electricity; the one-way SCR element; diode; gate circuit constitutes the loop to three-phase firewire; at this moment the mechanical release electromagnet adhesive of leaking electricity; switch contact is disconnected; protective effect has been played in the circuit outage.When the outage of input power supply generation zero line; the live wire that has only by residual current circuit breaker; at this moment if the electric leakage of generation equipment; when person electric shock and electric current surpass set quota; become direct voltage after the alternating current pressuring meridian rectification circuit rectification that mutual inductor coil is inducted; this voltage is more than or equal to the trigger voltage of one-way SCR element; be added between the control utmost point of one-way SCR element and the negative electrode and make its conducting; electric current is by the series diode of earth connection in OR circuit; mechanical release electromagnet coil leaks electricity; the one-way SCR element; diode; gate circuit constitutes the loop to three-phase firewire; at this moment the mechanical release electromagnet adhesive of leaking electricity; switch contact is disconnected; the circuit outage plays a protective role.As long as the input power supply has a phase firewire conducting; residual current circuit breaker just can be worked; if this moment is the electric leakage of generation equipment; when person electric shock and electric current surpass set quota; become direct voltage after the alternating current pressuring meridian rectification circuit rectification that mutual inductor coil is inducted; this voltage is more than or equal to the trigger voltage of one-way SCR element; be added between the control utmost point of one-way SCR element and the negative electrode and make its conducting; electric current is by the series diode of earth connection in OR circuit; mechanical release electromagnet coil leaks electricity; the one-way SCR element; diode; gate circuit constitutes the loop to this live wire; at this moment the mechanical release electromagnet adhesive of leaking electricity; switch contact is disconnected; protective effect has been played in the circuit outage.
The invention has the beneficial effects as follows, implement protection in the time of can normally moving or take place zero line outage, live wire outage on the input power cord road in all directions.Only add in the circuit two gate circuits be electrically connected description of drawings simple in structure
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is the external structure figure of the embodiment of the invention.
Fig. 3 is the planar configuration figure of the embodiment of the invention.
1. mechanical dropout switches among the figure, 2. input live wire, 3. input zero line, 4. four of switch pairs of contacts, 5. test knob, 6. OR circuit, 7. mechanical release electromagnet coil, 8. one-way SCR element, 9. electrolytic capacitor, 10. bridge circuit, 11. diodes, 12. earth terminal, 13. test resistances, 14. gate circuits, 15. the output zero line, 16. output live wires, 17. instrument transformers, 18. the electric leakage indication recovers knob, 19. wiring boards and element, 20. insulation crusts.
Embodiment
In Fig. 1, test knob (5), test resistance (13) series connection are connected with zero line, diode (11), the gate circuit (14) of machinery dropout switch respectively; OR circuit (6), mechanical dropout switch electromagnet coil (7), one-way SCR element (8), diode (11), gate circuit (14) series connection are connected with output live wire (16) respectively; Instrument transformer (17) lead-in wire is connected on the input circuit of bridge circuit (10) respectively; The output cathode of bridge circuit (10) is connected with the control utmost point of one-way SCR element (8), and negative pole is connected with the negative electrode of one-way SCR element (8), is connected an electrolytic capacitor (9) between the control utmost point and negative electrode; From connecting a diode between OR circuit (6) series diode, the anode of this diode is connected with ground wire.All parts all are contained in the shell (20) of insulation.
Claims (1)
1. anticreep circuit breaker, in insulation crust, machinery dropout switch electromagnet coil, OR circuit, the one-way SCR element, diode, gate circuit is pressed the consistent order of conducting direction and is electrically connected, it is characterized in that: two diodes in the OR circuit that is made of three diodes are by in the consistent circuit that is connected on mechanical dropout switch electromagnet coil and one-way SCR element with one-way SCR element conductive direction, the negative electrode of another diode is electrically connected with lead between two series diodes, anode is electrically connected with ground wire, another gate circuit of connecting in the line and being made of three diodes, the negative electrode of diode is connected electrically in respectively on the output three-phase firewire by the line conduction direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510064438 CN1674191A (en) | 2005-04-18 | 2005-04-18 | Earth leakage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510064438 CN1674191A (en) | 2005-04-18 | 2005-04-18 | Earth leakage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1674191A true CN1674191A (en) | 2005-09-28 |
Family
ID=35046633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510064438 Pending CN1674191A (en) | 2005-04-18 | 2005-04-18 | Earth leakage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1674191A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11534864B2 (en) | 2018-06-20 | 2022-12-27 | Robert Bosch Gmbh | Method for connecting two components and component composite |
-
2005
- 2005-04-18 CN CN 200510064438 patent/CN1674191A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11534864B2 (en) | 2018-06-20 | 2022-12-27 | Robert Bosch Gmbh | Method for connecting two components and component composite |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |