CN201656427U - Circuit breaker for preventing lines from breaking - Google Patents
Circuit breaker for preventing lines from breaking Download PDFInfo
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- CN201656427U CN201656427U CN2009202695423U CN200920269542U CN201656427U CN 201656427 U CN201656427 U CN 201656427U CN 2009202695423 U CN2009202695423 U CN 2009202695423U CN 200920269542 U CN200920269542 U CN 200920269542U CN 201656427 U CN201656427 U CN 201656427U
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Abstract
The utility model discloses a circuit breaker for preventing lines from breaking. The circuit breaker comprises a circuit breaker body arranged on a power line, and an external control line is connected to the circuit breaker body. The utility model is characterized in that the circuit breaker also comprises a control unit for preventing lines from breaking, a power line voltage detection subunit, an external control line voltage detection subunit and a circuit breaking action execution subunit, wherein the power line voltage detection subunit is used for detecting whether the power line has voltage signals; the external control line voltage detection subunit is used for detecting whether the external control line has voltage signals; the circuit breaking action execution subunit is used for making the circuit breaker body make circuit breaking action when any one of the power line and the external control line does not have voltage signals.
Description
Technical field
The utility model relates to a kind of circuit breaker, particularly be a kind of have prevent the power line that combines with circuit breaker and the circuit breaker of the improper function of breaking of external control line, it can be applied in the prepaid fee power management system.
Background technology
Switch switchgear for power department, be to guarantee Electrical Safety, carry out circuit and switch imperative equipment, it can be applied to high pressure also can be applied to the low pressure operating mode, can be arranged on the single-phase electricity line of force also can be arranged on the three-phase power line, here be referred to as breaker body with existing circuit breaker, it has cut-out function at least, and the function that receives the external control signal by the external control line.
See also shown in Figure 1ly, it is the internal structure schematic diagram of existing circuit breaker; Here be example to be arranged at the single-phase electricity line of force, it comprises: a box body 001, and adopt the insulation fire proofing to make, portion is provided with following structure within it:
An one phase line incoming end 032 and a line output terminal 037 mutually are in order to be linked in the power line; One actuating mechanism, it comprises: one handle 021, it has an operating side and is arranged at outside the described box body 001, carries out the break-make control of circuit; One movable contact spring 024, its end have a moving contact 025; One link gear 022, it is made up of a plurality of gangbar, rotate by the twisted axis that is arranged in the described box body 001, an end of its gangbar that goes up most 0221 is connected with described handle 021, and the end of bottom STATEMENT OF FEDERALLY SPONSORED 0222 is connected with the front end of described movable contact spring 023; One fixed contact 031, it is connected with described phase line input 032, when the described link gear 022 of turn handle 021 pulling, thereby causes seesawing of movable contact spring 024, the contact that realizes moving contact 025 and fixed contact 031 with separate, finally reach the purpose of power circuit break-make.It also comprises: an arc-extinguishing mechanism and an overcurrent protection mechanism; described arc-extinguishing mechanism is in order to eliminate the destruction of electric arc to circuit breaker; it comprises a metal retaining arc plate 033 and an arc-extinguish chamber 035; described metal retaining arc plate 033 is connected with described fixed contact 031 and extends to described box body 001 bottom, and described arc-extinguish chamber 035 is corresponding with described fixed contact 031.Described overcurrent protection mechanism is a magnetictrip 051, be arranged at described actuating mechanism bottom, the one end is connected with described movable contact spring upper end 023, its other end is connected with an end of a poke rod 052, the other end of described poke rod 052 leans with a gangbar of described link gear 022 and is connected, when overcurrent appears in power line, described magnetictrip 051 action, thereby the described poke rod 052 of pushing tow, and then the gangbar of described link gear 022 is moved, force described moving, fixed contact separately disconnects load and power line; Described box body inside is provided with a control circuit board 036, and have a control line and insert piece 044, described control line inserts the lower end that piece 044 is positioned at described phase line output wiring terminal 032, control line 041 may be from the pre-payment control circuit of electric energy meter, and extend in the described Shell of circuit breaker 001 and be connected with described control circuit board 036, be used to make described control circuit board 036 to accept external control signal, and be converted into triggering signal, carry out the open circuit control of pre-payment when using up.One carries out actuating mechanism, it has a trigger end, it receives the triggering signal action of described control circuit board 036, and then drive the action of described interlock controll block group 022, and what adopted here is magnetictrip 039, its armature and described STATEMENT OF FEDERALLY SPONSORED 052 lean, when described magnetictrip 039 is received the triggering signal of described control circuit board 36, described armature promotes STATEMENT OF FEDERALLY SPONSORED 052, and then drives the action of described interlock controll block group, and circuit breaker is opened circuit.
But along with there is following defective in the development existing circuit breaker of intelligent electrical network: when the power line of circuit breaker or external control line have one disconnected, particularly under the situation that the external control line breaks, often can not influence user's electricity consumption, but the problem of bringing but for management of power use department, yes some users are in the situation at pre-payment control, deliberately external control line or power line are cut off and substituted for another surreptitiously regular tap then, this has greatly influenced normal electricity consumption order.
In view of above-mentioned defective, the utility model creator is through research and practice have obtained this creation finally for a long time.
Summary of the invention
The purpose of this utility model is, provides a kind of circuit breaker of breaking of preventing, in order to overcome above-mentioned technological deficiency.
For achieving the above object, the technical solution adopted in the utility model is, a kind of circuit breaker of breaking of preventing is provided, it includes: a breaker body, it is arranged on the power line, and has the access of external control line, comprises that in described breaker body one prevents the control unit that breaks; It comprises:
One power voltage line detection sub-unit is in order to detect whether voltage signal is arranged on the described power line;
One external control line voltage detecting subelement is in order to detect on the described external control line whether voltage signal is arranged;
Subelement is carried out in one action of opening circuit, in order at described power line, the external control line is wherein arbitrary when not having voltage signal, makes described breaker body produce the action of opening circuit.
Wherein, described power voltage line detection sub-unit comprises:
One first voltage conversion circuit, it is converted to one first voltage signal with the voltage signal on the power line;
One first decision circuitry, it receives described first voltage signal, during the no-voltage signal, exports a break signal on power line.
Wherein, described external control line voltage detecting subelement comprises:
One second voltage conversion circuit, it is converted to one second voltage signal with the voltage signal on the external control line;
One processor, it obtains described first voltage signal and second voltage signal respectively, thereby produces a break signal when described power line or external control line no-voltage signal.
One second decision circuitry, it receives described second voltage signal, during the no-voltage signal, exports a break signal on the external control line.
Preferable, described first voltage conversion circuit is arranged on the described power line, and it comprises:
One filter rectification electronic circuit is connected with a voltage transition element, and wherein, described voltage transition element has one first voltage signal output end.
Preferable, described first decision circuitry comprises: a comparator, and an input of wherein said comparator is connected with described first voltage signal output end, and its power end is connected with the output of a voltage stabilizing circuit.
Wherein, described second voltage conversion circuit comprises:
One filter rectification electronic circuit is connected with a voltage transition element, and wherein, described voltage transition element has one second voltage signal output end.
Preferable, described second decision circuitry comprises:
One triode, its base stage is connected with described second voltage signal output end;
One electric capacity, it is connected with the collector and emitter of described triode, and an end is connected with the output of described voltage stabilizing circuit simultaneously.
Wherein, described second voltage signal flows through divider resistance and is connected with second input of described comparator.
Wherein, the described action execution subelement that opens circuit comprises:
One triggers element, and it accepts described break signal, thereby produces a triggering signal;
One executive component, it accepts described triggering signal, is converted to a mechanical action, and described circuit breaker is opened circuit.
Preferable, also comprise: an indicating circuit, it comprises: a LED, on the housing of its setting and described breaker body, the one end is connected with described second voltage signal output end.
Preferable, described triggering element be thyristor, relay one of them.
The better execution element is a release.
The beneficial effects of the utility model are compared with the prior art, can make circuit breaker produce the action of opening circuit, thereby avoid artificial unauthorised broken and replacing to circuit breaker in the intelligent grid under the situation of power line and the arbitrary appearance broken string of external control line;
Have temperature detecting function simultaneously, under condition of overhigh temperature, thereby circuit breaker is produced open circuit action to play the effect of protection;
Have communication, storage, demonstration and input function, thereby reached intelligent control, and for setting up intelligent providing the foundation property of electrical network device.
Description of drawings
Fig. 1 is existing cutaway view with circuit breaker (breaker body) of external control line;
Fig. 2 prevents the breaker structure functional block diagram that breaks for the utility model;
Fig. 3 prevents the structure function block diagram of the circuit breaker preferred embodiment one of breaking for the utility model;
Fig. 4 prevents the structure function block diagram of the circuit breaker preferred embodiment two of breaking for the utility model;
Fig. 5 prevents the particular circuit configurations schematic diagram of the circuit breaker preferred embodiment one of breaking for the utility model;
Fig. 6 prevents the particular circuit configurations schematic diagram of the circuit breaker preferred embodiment two of breaking for the utility model.
Embodiment
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the utility model is above-mentioned.
See also shown in Figure 2ly, it prevents the breaker structure functional block diagram that breaks for the utility model; The described circuit breaker that breaks of preventing, it includes: a breaker body 20, it is arranged on the power line, in order to realize the break-make of power line 10, and have external control line 11 and insert, described external control line 11 is realized the external control of circuit breaker is handled, and in the described external control line 11 voltage signal is arranged, and comprises that in described circuit breaker one prevents the control unit that breaks; It comprises: a power voltage line detection sub-unit 21, in order to obtaining the voltage signal on the described power line 10, and detect on the described power line 10 whether voltage signal is arranged; One external control line voltage detecting subelement 22 in order to obtaining the voltage signal on the described external control line 11, and detects on the described external control line 11 whether voltage signal is arranged;
See also shown in Figure 3ly, it prevents the structure function block diagram of the circuit breaker preferred embodiment one of breaking for the utility model; Here if at described power voltage line detection sub-unit 21 and described external control line voltage detecting subelement 22, wherein, described power voltage line detection sub-unit 21 comprises: one first voltage conversion circuit 211, and it is converted to one first voltage signal with the voltage signal on the power line 10;
One first decision circuitry 212, it receives described first voltage signal, and has judged whether voltage signal on described power line 10, during the no-voltage signal, exports a break signal on power line 10.
Described external control line voltage detecting subelement 22 comprises: one second voltage conversion circuit 221, and it is converted to one second voltage signal with the voltage signal on the external control line 11;
One second decision circuitry 222, it receives described second voltage signal, and has judged whether voltage signal on described external control line 11, during the no-voltage signal, exports a break signal on external control line 11.
Described first decision circuitry 212 and described second decision circuitry 222 are all carried out subelement 23 with the described action of opening circuit and are combined, and in order to when arbitrary decision circuitry is sent break signal, make described breaker body 10 produce the action of opening circuit.
See also shown in Figure 4ly, it prevents the structure function block diagram of the circuit breaker preferred embodiment two of breaking for the utility model; General meaning, two decision circuitry of the above embodiments one can adopt analog circuit to realize usually, be that described first decision circuitry 212 and described second decision circuitry 222 only can be finished judgement and send the break signal function, can't realize function expansion, thereby can't adapt with the existing intelligent power utilization management of advocating.In present embodiment two, adopted a processor 3 for this reason, it is connected with second voltage conversion circuit 221 with described first voltage conversion circuit 211, because processor 3 has had port many, thereby from simple functional perspective, 221 pairs of described processors 3 of described first voltage conversion circuit 211 and second voltage conversion circuit form multiplexing, thereby still constitute power voltage line detection sub-unit 21 and external control line voltage detecting subelement 22 described in above-mentioned embodiment; Also set up auxiliary functional circuit simultaneously and be connected with described processor 3, described auxiliary functional circuit comprises at least: a telecommunication circuit 31 or warning circuit 32 or display circuit 33 or keyboard circuit (not shown) one of them.Wherein, telecommunication circuit 31 is used for realizing communicating by letter with host computer, and the detected electricity consumption situation of present circuit breaker is transferred out; Described warning circuit 32 can carry out alarm when broken string appears in a certain circuit (power line 10 or external control line 11), as audible and visual alarm, the described for this reason circuit breaker that breaks that prevents also should be provided with the power supply of a battery class in order to power under the situations of usefulness electric device at needs such as processor 3.Described keyboard circuit is in order to the described processor 3 input control commands corresponding that prevent the circuit breaker that breaks, and its structure at circuit breaker can only be a communication interface.
See also shown in Figure 5, it prevents the particular circuit configurations schematic diagram of the circuit breaker preferred embodiment one of breaking for the utility model, the circuit breaker that it is emphasized that the utility model correspondence can be applied to high-tension line and also can be applied to low-voltage circuit, can be that the single-phase electricity line of force also can be a three-phase power line; Present embodiment is to be example with single-phase, but for three-phase, only is to need the object of the described first voltage conversion circuit collection is divided into three phase lines from a phase line, and any one phase line all can be produced corresponding disconnection signal by disconnected.Described power voltage line detection sub-unit comprises: one first voltage conversion circuit comprises: a filter rectification electronic circuit is connected with a voltage transition element, and wherein, described voltage transition element has one first voltage signal output end.Described filter rectifier is made up of a diode D1 and capacitor C 1, carrying out step-down by diode D2 rectification and resistance R 1 handles, carrying out voltage stabilizing with 1 pair of voltage of described voltage stabilizing chip IC handles, the comparator IC2 that voltage signal after the voltage stabilizing is supplied with described first decision circuitry uses, to be applied to the input of a photoelectrical coupler IC3 through the signal of telecommunication of over commutation by a dropping resistor R12 simultaneously, the output head grounding of described photoelectrical coupler IC3, another output is connected by a resistance R 13 with the output of described voltage stabilizing chip IC 1, and be connected with the base stage of a triode Q2 (positive-negative-positive), the collector electrode of described triode Q2 is connected with the output of described voltage stabilizing chip IC 1, its emitter is by divider resistance R4, R5 ground connection is from described divider resistance R4, tie point is connected with the end of oppisite phase of described comparator between the R5;
One reference voltage circuit, it is converted to the in-phase end that a reference voltage signal (second voltage signal) places described comparator with the voltage signal on the external control line; Wherein said reference voltage circuit comprises: a diode D6, and it is by divider resistance R9, the R10 ground connection of one group of series connection, and the serial connection point of wherein said divider resistance R9, R10 is connected with the in-phase end of described comparator;
Described external control line voltage detecting subelement comprises: one second voltage conversion circuit, and it is a resistance R 8, produces one second voltage signal; One second decision circuitry, it is a triode Q1 (a NPN type), its base stage is connected with a resistance R 7, receives described second voltage signal, is provided with capacitor C 4 between its collector and emitter, and triode Q1 grounded emitter; And be connected by the output of a resistance R 6 and described voltage stabilizing chip IC 1;
Subelement is carried out in one action of opening circuit, it comprises: one is controllable silicon (thyristor) or selects relay for use as triggering element, this sentences controllable silicon SCR is example, it is connected with coil L1 first end of a release, and the motion end of described release is connected with the actuating mechanism of described breaker body 10; One end ground connection of described controllable silicon SCR, second end of described trip coil L1 is connected with described diode D2, thereby forms one first loop; Electric current on described external control line Lkz, the Nkz is connected with coil L1 second end of described release by diode D5, thereby forms one second loop.
The output of described comparator IC2 is connected with the control end of described controllable silicon SCR by a diode D4, thereby realizes that described power voltage line detection sub-unit carries out being connected of subelement with the described action of opening circuit; The collector electrode of described triode Q1 is connected with the control end of controllable silicon SCR by diode D3; Thereby formed described external control line voltage detecting subelement and carried out being connected of subelement with the described action of opening circuit.
An indicating circuit can also be set, and it comprises: a LED, and it is arranged on the housing of described breaker body 10, and the one end can be connected its other end ground connection with described second voltage signal output end by a dropping resistor R11.
When broken string does not take place, be power line and external control line all just often, described photoelectrical coupler IC3 input is lighted, the output conducting of described photoelectrical coupler IC3 at this moment, then described triode Q2 conducting, thereby through voltage stabilizing chip IC 1 voltage stabilizing and resistance R 4, R5 voltage division processing, a voltage signal that provides for the end of oppisite phase of described comparator IC2; This moment, the voltage signal of external control line Lkz, Nkz was converted into the in-phase end that offers comparator IC2 behind second voltage signal, can pass through the setting of resistance R 4, R5, R9, R10 value, realize that (this is very easy to described comparator IC2 output electronegative potential to those skilled in the art, here just repeated no more), thereby described controllable silicon SCR is not triggered, and the described action of opening circuit is carried out subelement and is failure to actuate; Second voltage signal that described external control line Lkz, Nkz produce acts on the base stage of described triode Q1, thereby makes described triode Q1 conducting, and then described controllable silicon SCR can not be triggered yet, and the described action of opening circuit is carried out subelement and is failure to actuate.
When described power line Lin, Nin disconnect, the voltage of the in-phase end of then described comparator IC2 is greater than end of oppisite phase, described comparator IC2 output this moment high potential, then controllable silicon SCR is triggered, the described second loop conducting, thus the described circuit breaker of release action this moment produces the action of opening circuit;
When described external control line Lkz, Nkz disconnection, then triode Q1 ends, and then the trigger end of controllable silicon SCR is a high potential, and controllable silicon SCR is triggered, the described first loop conducting, thus the described circuit breaker of release action this moment produces the action of opening circuit.
No matter so power line Lin, Nin or external control line Lkz, Nkz disconnect, all can make circuit breaker produce the action of opening circuit, thereby prevent the people for cutting off the circuit breaker control line, or change the problem generation of circuit breaker privately, this is even more important in precharging circuit.
See also shown in Figure 6ly, it prevents the particular circuit configurations schematic diagram of the circuit breaker preferred embodiment two of breaking for the utility model.Here introduced processor MCU, increase the utility model and prevented the application aspect intelligent of the circuit breaker that breaks, the difference of itself and the foregoing description one mainly is, above-mentioned is full analog circuit, here be digital circuit, the output of photoelectrical coupler IC3 directly is connected with the input of processor MCU, and described external control line Lkz, Nkz are converted to second voltage signal by second voltage conversion circuit, and are connected with described processor MCU by a triode Q1; Promptly at external control line Lkz, when Nkz has voltage signal, described triode Q1 is conducting, the corresponding input of then described processor MCU is an electronegative potential; An output of described processor MCU is connected with the control end of described controllable silicon SCR by triode Q2; Thereby photoelectrical coupler IC3 receive power line Lin, Nin do not have voltage signal or described external control line Lkz, when Nkz does not have voltage signal, described processor MCU output electronegative potential, thereby make described triode Q2 conducting, and then trigger described controllable silicon SCR conducting, thereby the described circuit breaker of described release action this moment produces the action of opening circuit.
Also be provided with a stand-by power supply circuit, it can be battery or rechargeable battery; After cutting off at power line Lin, Nin and external control line Lkz, Nkz, in the absence of power supply supply, other are powered with electrical component for described processor MCU etc.; Also be provided with a temperature detection chip IC 2, it detects the ambient temperature of circuit breaker inside, and is converted into a digital data transmission to described processor MCU, is connected with the control end of described controllable silicon SCR by triode Q3; Surpass under the situation of threshold value in temperature, described processor MCU output low-potential signal, thus make described triode Q3 conducting, and then triggering described controllable silicon SCR conducting, release action this moment causes that described circuit breaker produces the action of opening circuit.
Increased warning circuit simultaneously, it comprises: LED 1 and LED 2, and respectively in order to indication power line Lin, Nin or external control line Lkz, Nkz have broken, or the action of opening circuit of the too high circuit breaker that causes of temperature.
Also comprise: it is connected a telecommunication circuit, display circuit, keyboard circuit, memory circuit and clock circuit with described processor MCU respectively.Wherein, described telecommunication circuit is used for realizing communicating by letter with host computer, and the detected electricity consumption situation of present circuit breaker is transferred out, and can be here wired also can make wireless mode; Described keyboard circuit is in order to the described processor MCU input control commands corresponding that prevents the circuit breaker that breaks, and the threshold size of the comparison of adjustment and temperature correlation, and its structure from circuit breaker can only be a communication interface; Described memory circuit is in order to the storage corresponding data information; Described display circuit is in order to show corresponding status data; Described clock circuit is in order to provide clock signal to described processor MCU.
The above only is preferred embodiment of the present utility model, only is illustrative for the utility model, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that the utility model claim is limited, revise, even equivalence, but all will fall in the protection range of the present utility model.
Claims (14)
1. circuit breaker that prevents to break, it includes: a breaker body, it is arranged on the power line, and has the external control line and insert, and it is characterized in that, comprises that also one prevents the control unit that breaks; It comprises:
One power voltage line detection sub-unit is in order to detect whether voltage signal is arranged on the described power line;
One external control line voltage detecting subelement is in order to detect on the described external control line whether voltage signal is arranged;
Subelement is carried out in one action of opening circuit, in order at described power line, the external control line is wherein arbitrary when not having voltage signal, makes described breaker body produce the action of opening circuit.
2. the circuit breaker that breaks of preventing according to claim 1 is characterized in that described power voltage line detection sub-unit comprises:
One first voltage conversion circuit, it is converted to one first voltage signal with the voltage signal on the power line;
One first decision circuitry, it receives described first voltage signal, during the no-voltage signal, exports a break signal on power line.
3. the circuit breaker that breaks of preventing according to claim 1 and 2 is characterized in that described external control line voltage detecting subelement comprises:
One second voltage conversion circuit, it is converted to one second voltage signal with the voltage signal on the external control line;
One second decision circuitry, it receives described second voltage signal, during the no-voltage signal, exports a break signal on the external control line.
4. the circuit breaker that breaks of preventing according to claim 2 is characterized in that described first voltage conversion circuit is arranged on the described power line, and it comprises:
One filter rectification electronic circuit is connected with a voltage transition element, and wherein, described voltage transition element has one first voltage signal output end.
5. according to claim 2 or the 4 described circuit breakers that break of preventing, it is characterized in that, described first decision circuitry comprises: a comparator, one input of wherein said comparator is connected with described first voltage signal output end, and its power end is connected with the output of a voltage stabilizing circuit.
6. the circuit breaker that breaks of preventing according to claim 3 is characterized in that described second voltage conversion circuit comprises:
One filter rectification electronic circuit is connected with a voltage transition element, and wherein, described voltage transition element has one second voltage signal output end.
7. the circuit breaker that breaks of preventing according to claim 5 is characterized in that described second decision circuitry comprises:
One triode, its base stage is connected with described second voltage signal output end;
One electric capacity, it is connected with the collector and emitter of described triode, and an end is connected with the output of described voltage stabilizing circuit simultaneously.
8. the circuit breaker that breaks of preventing according to claim 7 is characterized in that described second voltage signal flows through divider resistance and is connected with second input of described comparator.
9. the circuit breaker that breaks of preventing according to claim 1 is characterized in that,
Described power voltage line detection sub-unit comprises:
One first voltage conversion circuit, it is converted to one first voltage signal with the voltage signal on the power line;
Described external control line voltage signal detection sub-unit comprises:
One second voltage conversion circuit, it is converted to one second voltage signal with the voltage signal on the external control line;
One processor, it obtains described first voltage signal and second voltage signal respectively, thereby produces a break signal when described power line or external control line no-voltage signal.
10. the circuit breaker that breaks of preventing according to claim 9, it is characterized in that, comprise that also auxiliary functional circuit is connected with described processor, described auxiliary functional circuit comprises at least: a telecommunication circuit or warning circuit or display circuit or keyboard circuit one of them.
11., it is characterized in that the described action of opening circuit is carried out subelement and comprised according to claim 1 or the 7 or 9 described circuit breakers that break of preventing:
One triggers element, and it accepts described break signal, thereby produces a triggering signal;
One executive component, it accepts described triggering signal, is converted to a mechanical action, and described circuit breaker is opened circuit.
12. according to claim 7 or the 9 described circuit breakers that break of preventing, it is characterized in that, also comprise: an indicating circuit, it comprises: a LED, it is arranged on the housing of described breaker body, and the one end is connected with described second voltage signal output end.
13. the circuit breaker that breaks of preventing according to claim 11 is characterized in that, described triggering element be thyristor, relay one of them.
14. the circuit breaker that breaks of preventing according to claim 11 is characterized in that described executive component is a release
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202695423U CN201656427U (en) | 2009-10-20 | 2009-10-20 | Circuit breaker for preventing lines from breaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202695423U CN201656427U (en) | 2009-10-20 | 2009-10-20 | Circuit breaker for preventing lines from breaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656427U true CN201656427U (en) | 2010-11-24 |
Family
ID=43121665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202695423U Expired - Lifetime CN201656427U (en) | 2009-10-20 | 2009-10-20 | Circuit breaker for preventing lines from breaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201656427U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368457A (en) * | 2011-10-31 | 2012-03-07 | 湖北盛佳电器设备有限公司 | External control circuit breaker without dangerous suspended voltage |
| CN106802595A (en) * | 2016-12-23 | 2017-06-06 | 中国航天时代电子公司 | A kind of relay module of high security |
-
2009
- 2009-10-20 CN CN2009202695423U patent/CN201656427U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368457A (en) * | 2011-10-31 | 2012-03-07 | 湖北盛佳电器设备有限公司 | External control circuit breaker without dangerous suspended voltage |
| CN102368457B (en) * | 2011-10-31 | 2016-05-18 | 湖北盛佳电器设备有限公司 | Without the external control circuit breaker of dangerous suspended voltage |
| CN106802595A (en) * | 2016-12-23 | 2017-06-06 | 中国航天时代电子公司 | A kind of relay module of high security |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101124 Effective date of abandoning: 20091020 |