CN201478227U - Electromagnetic circuit breaker with short-circuit protection function - Google Patents
Electromagnetic circuit breaker with short-circuit protection function Download PDFInfo
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- CN201478227U CN201478227U CN2009201496121U CN200920149612U CN201478227U CN 201478227 U CN201478227 U CN 201478227U CN 2009201496121 U CN2009201496121 U CN 2009201496121U CN 200920149612 U CN200920149612 U CN 200920149612U CN 201478227 U CN201478227 U CN 201478227U
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Abstract
The utility model relates to an electromagnetic circuit breaker with short-circuit protection function. The electromagnetic circuit breaker comprises a circuit breaker body, and further consists of a short-circuit detecting subunit for detecting short-circuit failures and generating a trigger signal when short-circuit occurs, and an electromagnetic operating mechanism which is arranged in the circuit breaker body, is connected with the short-circuit detection subunit, and can separate the movable contacts and the fixed contacts of the circuit breaker body after receiving the trigger signal.
Description
Technical field
The utility model relates to a kind of circuit breaker, particularly be a kind of circuit breaker of realizing short-circuit protection by electromagnetism action.
Background technology
Switch switchgear for power department, be to guarantee Electrical Safety, carry out circuit and switch imperative equipment, therefore the effect of circuit breaker can not be ignored, therefore be referred to as breaker body for the structure that can realize the basic on-off function of circuit breaker at least among the application, see also shown in Figure 1ly, it is the internal structure schematic diagram of existing circuit breaker; Can think that to a certain extent it is a kind of embodiment of breaker body.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 that a metal is when an arc plate 034 and an arc-extinguish chamber 035; described metal arc extinguishing board 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 overload 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.
But along with people to improving constantly that electric power safety and control require, existing circuit breaker has been difficult to reach this requirement, still there is following defective in it by analysis:
When short circuit accident takes place; can bring very strong electric current; though overcurrent protection this moment mechanism; can be with circuitry cuts; but under the situation that does not have to remove at short circuit accident; action does not have indication because circuit breaker opens circuit, thus cause unclear circuit breaker action or the short circuit reason that is overload causes of user to cause circuit to disconnect, so can close some electrical appliances usually; expectation reduces the use of electrical appliance; reach the purpose that reduces electric current, when the user passes through rotary handle once more, with moving of circuit breaker; fixed contact combines; circuit is connected; moment produces big electric current, may bring danger to the user, causes damage to power consumption equipment.
In view of above-mentioned defective, the utility model creator is through research and test for a long time, and the intention design realizes a kind of circuit breaker with special-purpose short-circuit protection function, and after producing defencive function, can carry out self-locking.
Summary of the invention
The purpose of this utility model is, a kind of circuit breaker with electromagnetic short circuit protection function is provided, in order to overcome above-mentioned defective.
For achieving the above object, the technical solution adopted in the utility model is, a kind of circuit breaker with electromagnetic short circuit protection function is provided, and it comprises: a breaker body also comprises:
One short-circuit detecting subelement is positioned on the described circuit substrate, detects in order to carry out short trouble, and produce a triggering signal when short circuit takes place;
One electromagnetism actuating mechanism, it is positioned at described breaker body, and is connected with described short-circuit detecting subelement, is receiving the dynamic and static contact separation that described triggering signal makes described breaker body.
Wherein, be a tongue tube for described short-circuit detecting subelement execution mode one, an end of described tongue tube is connected with phase line or zero line.
Described short-circuit detecting subelement execution mode two should comprise:
One power circuit after it obtains the signal of telecommunication from phase line and zero line, and is processed into a burning voltage;
One testing circuit changes in order to the electric current that detects on the phase line, produces one first detection signal;
One comparison circuit, it has the first input end that obtains a reference voltage and obtains described first detection signal, second input, and exports a control signal when short circuit takes place.
Wherein, comprise for described electromagnetism actuating mechanism execution mode one:
One electromagnet, its solenoid that has is connected serially between described tongue tube and the phase line, or is connected serially between described tongue tube and the zero line;
One trigger arm that opens circuit, its lower end is connected with described electromagnet armature, the upper end of the described trigger arm that opens circuit is a reset terminal, it extends in described case top one pilot hole, the described trigger arm that opens circuit is moved along described pilot hole when action, and the described trigger arm that opens circuit also has a protuberance;
One poke rod, the one end overlaps mutually with a gangbar of described link gear, the protuberance of the other end of described poke rod and the described trigger arm that opens circuit offsets, the protuberance of the described trigger arm that opens circuit pushes described poke rod when described armature motion, described poke rod is rotated, make described link gear action force the separation of described dynamic and static contact, the described trigger arm reset terminal that opens circuit stretches out housing.
Comprise for described electromagnetism actuating mechanism execution mode two:
One electromagnet, its solenoid that has one end is connected with described power circuit output end, and the other end is connected with the emitter of a triode, and described transistor base is connected with the output of described comparison circuit;
One trigger arm that opens circuit, its lower end is connected with described electromagnet armature, the upper end of the described trigger arm that opens circuit is a reset terminal, extend in described case top one pilot hole, the described trigger arm that opens circuit is moved along described pilot hole when action, and the described trigger arm that opens circuit also has a protuberance;
One poke rod, the one end overlaps mutually with a gangbar of described link gear, the protuberance of the other end of described poke rod and the described trigger arm that opens circuit offsets, the protuberance of the described trigger arm that opens circuit pushes described poke rod when described armature motion, described poke rod is rotated, make described link gear action force the separation of described dynamic and static contact, the described trigger arm reset terminal that opens circuit stretches out housing.
Wherein, described testing circuit is a tongue tube, and an end of described tongue tube is connected with described power circuit output end, and the other end of described tongue tube is connected with described comparison circuit second input.
Described testing circuit comprises: one is arranged on the instrument transformer on the phase line segment, a Bing Lian filter capacitor and a rectifier diode with it, and described rectification after-current is first detection signal.
Preferable, in order to realize adjusting the threshold value of electromagnet action, also comprise: a variable resistance setting links to each other with the described first input end that obtains burning voltage, in order to adjust the fiducial value of the triggering signal that described comparator exports.
The beneficial effects of the utility model are compared with the prior art; not only realized the electricity protection when short trouble takes place, realized simultaneously having increased fail safe by auto-lock function; the reliability height, and at having played indicative function because the circuit breaker that short trouble causes opens circuit to move.
Description of drawings
Fig. 1 is the internal structure schematic diagram of the circuit breaker of prior art;
Fig. 2 A is the circuit breaker embodiment one that the utlity model has the electromagnetic short circuit protection function internal structure schematic diagram when not being short-circuited fault;
Fig. 2 B is the internal structure schematic diagram of circuit breaker embodiment one when being short-circuited fault that the utlity model has the electromagnetic short circuit protection function;
Fig. 2 C is the circuit breaker embodiment one that the utlity model has the electromagnetic short circuit protection function internal structure schematic perspective view when not being short-circuited fault;
Fig. 2 D the utlity model has the internal structure decomposing schematic representation that electromagnetic short circuit protection helps the circuit breaker embodiment one of energy;
Fig. 2 E is the electrical block diagram one that the utlity model has the circuit breaker embodiment one of electromagnetic short circuit protection function;
Fig. 2 F is the electrical block diagram two that the utlity model has the circuit breaker embodiment one of electromagnetic short circuit protection function;
Fig. 3 A is the circuit breaker embodiment one that the utlity model has the electromagnetic short circuit protection function internal structure schematic diagram when not being short-circuited fault;
Fig. 3 B is the internal structure schematic diagram of circuit breaker embodiment two when being short-circuited fault that the utlity model has the electromagnetic short circuit protection function;
Fig. 3 C is the circuit breaker embodiment two that the utlity model has the electromagnetic short circuit protection function internal structure schematic perspective view when not being short-circuited fault;
Fig. 3 D is the internal structure decomposing schematic representation that the utlity model has the circuit breaker embodiment two of electromagnetic short circuit protection function;
Fig. 3 is the electrical block diagram that the utlity model has the circuit breaker embodiment two of electromagnetic short circuit protection function.
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 Fig. 2 A, Fig. 2 C and Fig. 2 D, it is respectively internal structure schematic diagram, the stereogram of circuit breaker embodiment one under normal condition that the utlity model has the electromagnetic short circuit protection function and the circuit breaker embodiment one three-dimensional structural representation that decomposes that the utlity model has the electromagnetic short circuit protection function; Described circuit breaker with electromagnetic short circuit protection function comprises: a breaker body; in order to realize the basic function of present circuit breaker; in order to realize short-circuit protection function of the present utility model; its specific embodiment that adopts is as follows: it is provided with a short-circuit detecting subelement and an electromagnetism actuating mechanism; wherein; described short-circuit detecting subelement is in order to carry out the detection of short trouble; it comprises: a tongue tube 24; it is positioned at the top of the phase line segment 18 of described breaker body; but short trouble when taking place; owing to produce powerful magnetic field, thereby make the described tongue tube 24 inner contact adhesives that separate.Described electromagnetism actuating mechanism, it comprises: an electromagnet 21, the armature end of described electromagnet 21 is provided with the trigger arm 22 that opens circuit, described trigger arm 22 lower ends of opening circuit are connected with the armature of described electromagnet 21, the upper end of the described trigger arm 22 that opens circuit is a reset terminal, it extends in described case top one pilot hole 111, after described electromagnet 21 is triggered, thereby described armature moves upward and drives the described trigger arm 22 that opens circuit and move along described pilot hole 111, and the described trigger arm 22 that opens circuit also has a protuberance 221; Also comprise a poke rod 23, its stage casing is connected with the twisted axis 112 that is arranged on described inner walls, and described poke rod 23 is provided with one first butting section, and it overlaps mutually with a gangbar 121 of described link gear; Be provided with that protuberance 221 leans on one second butting section itself and the described trigger arm that opens circuit; Described poke rod 23 also is provided with one the 3rd butting section, offsets in order to the armature with overcurrent protection mechanism 14, and described overcurrent protection mechanism 14 is positioned at the top of arc-extinguishing mechanism 17; When generation is overladen, described the 3rd butting section of armature pushing tow of described overcurrent protection mechanism 14, make described poke rod 23 rotations, thereby a gangbar 121 of described link gear is separated with described first butting section, thereby make the link gear action, finally force dynamic and static contact 151,161 separation on the described dynamic and static contact 15,16, the open circuit protection when realizing overload; But poke rod 23 can reset automatically owing to elastic reaction after this overcurrent protection; that is to say does not need to reset; only be rotation, just can make by link gear that dynamic and static contact 151,161 combines on the described dynamic and static contact 15,16 by handle 13.
See also shown in Fig. 2 B, it is the internal structure schematic diagram of circuit breaker embodiment one when being short-circuited fault that the utlity model has the electromagnetic short circuit protection function; For structure of the present utility model; in case the accident of being short-circuited; on described circuit-line, can produce high-intensity magnetic field; the contact adhesive of the tongue tube 24 of described short-circuit detecting subelement at this moment; thereby produce a triggering signal (the triggering signal mechanism of its generation; to describe in the circuit structure below); thereby produce the electromagnetism action after making electromagnet 21 in the described electromagnetism actuating mechanism receive signal; described armature is moved upward; thereby the described trigger arm 22 that opens circuit is moved upward; described reset terminal stretches out described guide hole 111; thereby play indicative function; show that promptly present state is opening circuit of causing of short trouble; and because described second butting section of protuberance 221 pushing tows; and then described poke rod 23 is rotated around twisted axis 112; thereby make the link gear action; finally force described moving; static contact 15; moving on 16; fixed contact 151; 161 separate; even circuit is cut off; the high-intensity magnetic field that short circuit produces has disappeared; but the described trigger arm 21 of opening circuit is because leaning of spring and leaning of a recess 231 of second butting section of described protuberance 221 and described poke rod 22; the trigger arm 21 that opens circuit can not be resetted automatically; thereby the utility model has not only been realized the protection of short circuit; simultaneously because structure ingenious formed the self-locking after the short circuit; has only the user to reset to realize rotary handle 13 once more; make described moving; static contact 15; moving on 16; fixed contact 151.161 combines, and has finally improved fail safe.
Seeing also Fig. 2 E is the electrical block diagram one that the utlity model has the circuit breaker embodiment one of electromagnetic short circuit protection function; The end of described tongue tube S is connected with phase line Lin (zero line Nin), its other end is connected with the input of described magnet spool XQ, the output of described magnet spool XQ is connected with described zero line Nin (phase line Lin), thereby form a loop, when short trouble does not take place, the contact of described tongue tube S does not have adhesive, thereby opens a way in described loop; When short trouble takes place, the contact that produces high-intensity magnetic field and then make described tongue tube S is by adhesive, thereby circuit closed, thereby there is triggering signal (signal of telecommunication) to be transferred to magnet spool XQ, the electromagnet action, promptly described armature moves upward, thereby the described trigger arm 22 that opens circuit is moved upward, described reset terminal stretches out described guide hole 111, finishes opening circuit and the self-locking process of foregoing description.
Seeing also Fig. 2 F is the electrical block diagram two that the utlity model has the circuit breaker embodiment one of electromagnetic short circuit protection function; The difference of itself and foregoing circuit structural representation one is that mainly structure has more tightly realized electronization, and this moment, described short-circuit detecting subelement comprised:
One power circuit is exported in order to form a stable voltage, the influence of not opened circuit, and it comprises: rectifier bridge D1-D4, divider resistance R1, R2, R3, capacitor C 1, power management chip IC1;
One comparison circuit, it comprises: divider resistance R4, R5, variable resistor W and comparator IC2, wherein, the end of oppisite phase of described comparator IC2 be connected in order to the described variable resistor W that reference voltage is provided, described power circuit provides operating voltage for it;
One testing circuit is made up of described tongue tube NS, and it is connected with described power circuit output end, and the other end is connected with described comparator IC2 in-phase end;
One controlling output circuit comprises: capacitor C 3, resistance R 6, triode Q, diode D5; Certainly the output of control circuit is to described magnet spool XQ.When circuit is short-circuited fault, around conductor, can produce powerful magnetic field, the contact of described tongue tube NS is by the magnetic field adhesive, thereby make line conduction, described electric current is input to the in-phase input end of comparison circuit comparator IC2 through tongue tube NS, and with the reference voltage of comparison circuit comparator IC2 inverting input relatively, thereby output high potential, and then input to described triode Q base stage, drive triode Q conducting, so there is triggering signal (signal of telecommunication) to be transferred to magnet spool XQ, make the electromagnet action, be that described armature moves upward, thereby the described trigger arm 22 that opens circuit is moved upward, described reset terminal stretches out described guide hole 111, finish the process that opens circuit of foregoing description, because described variohm W is set to link to each other with the described first input end that obtains burning voltage, carry out dividing potential drop, with the voltage after partial value as reference voltage, so can pass through to adjust the resistance of described variohm W, and then adjust the threshold value of the triggering signal that makes comparator IC2 output.
Above-mentioned is the technical scheme that the utlity model has the circuit breaker embodiment one of electromagnetic short circuit protection function; for a step is supported inventive point of the present utility model; can the technical scheme of embodiment two will be described below according to the concrete open product of the present utility model of further realizing of the present utility model in the hope of the ability technical staff.
See also shown in Fig. 3 A, Fig. 3 C and Fig. 3 D, it is respectively internal structure schematic diagram, the stereogram of circuit breaker embodiment two under normal condition that the utlity model has the electromagnetic short circuit protection function and the circuit breaker embodiment one three-dimensional structural representation that decomposes that the utlity model has the electromagnetic short circuit protection function; Described circuit breaker with electromagnetic short circuit protection function comprises: a breaker body; in order to realize the basic function of present circuit breaker; in order to realize short-circuit protection function of the present utility model; its specific embodiment that adopts is as follows: it is provided with a short-circuit detecting subelement and an electromagnetism actuating mechanism; wherein; described short-circuit detecting subelement is in order to carry out short-circuit detecting; it comprises: an instrument transformer 25; it is set on the phase line segment 18 of described breaker body; when short trouble takes place; electric current moment increase, instrument transformer 25 will induce a voltage signal.Described electromagnetism actuating mechanism, it comprises: an electromagnet 21, the armature end of described electromagnet 21 is provided with the trigger arm 22 that opens circuit, described trigger arm 22 lower ends of opening circuit are connected with the armature of described electromagnet 21, the upper end of the described trigger arm 22 that opens circuit is a reset terminal, it extends in described case top one pilot hole 111, after described electromagnet 21 is triggered, thereby described armature moves upward and drives the described trigger arm 22 that opens circuit and move along described pilot hole 111, and the described trigger arm 22 that opens circuit also has a protuberance 221; Also comprise a poke rod 23, its stage casing is connected with the twisted axis 112 that is arranged on described inner walls, and described poke rod 23 is provided with one first butting section, and it overlaps mutually with a gangbar 121 of described link gear; Be provided with that protuberance 221 leans on one second butting section itself and the described trigger arm that opens circuit; Described poke rod 23 also is provided with one the 3rd butting section, offsets in order to the armature with overcurrent protection mechanism 14, and described overcurrent protection mechanism 14 is positioned at the top of arc-extinguishing mechanism 17; When generation is overladen, described the 3rd butting section of armature pushing tow of described overcurrent protection mechanism 14, make described poke rod 23 rotations, thereby a gangbar 121 of described link gear is separated with described first butting section, thereby make the link gear action, finally force dynamic and static contact 151,161 separation on the described dynamic and static contact 15,16, the open circuit protection when realizing overload; But poke rod 23 can reset automatically owing to elastic reaction behind this overload protection; that is to say does not need to reset; only be rotation, just can make by link gear that dynamic and static contact 151,161 combines on the described dynamic and static contact 15,16 by handle 13.
See also shown in Fig. 3 B, it is the internal structure schematic diagram of circuit breaker embodiment two when being short-circuited fault that the utlity model has the electromagnetic short circuit protection function; For present embodiment two; in case the accident of being short-circuited; on the coil of described instrument transformer 25, can produce induced voltage; thereby produce a triggering signal; thereby produce action after making electromagnet 21 in the described electromagnetism actuating mechanism receive signal; described armature is moved upward; thereby the described trigger arm 22 that opens circuit is moved upward; described reset terminal stretches out described guide hole 111; thereby play indicative function; show that promptly present state is opening circuit of causing of short trouble; and because described second butting section of protuberance 221 pushing tows; and then described poke rod 23 is rotated around twisted axis 112; thereby make the link gear action; finally force described moving; static contact 15; moving on 16; fixed contact 151; 161 separate; even circuit is cut off; the high-intensity magnetic field that short circuit produces has disappeared; but the described trigger arm 21 of opening circuit is because leaning of spring and leaning of a recess 231 of second butting section of described protuberance 221 and described poke rod 22; the trigger arm 21 that opens circuit can not be resetted automatically; thereby the utility model has not only been realized the protection of short circuit; simultaneously because structure ingenious formed the self-locking after the short circuit; has only the user to reset to realize rotary handle 13 once more; make described moving; static contact 15; moving on 16; fixed contact 151.161 combines, and has finally improved fail safe.
See also shown in Figure 3ly, it is the electrical block diagram one that the utlity model has the circuit breaker embodiment two of electromagnetic short circuit protection function; It comprises: the short-circuit detecting subelement and in order to send open circuit the action the electromagnetism actuating mechanism in electromagnet, wherein said short-circuit detecting subelement comprises:
One power circuit is exported in order to form a stable voltage, the influence of not opened circuit, and it comprises: rectifier bridge D1-D4, divider resistance R1, R2, R3, capacitor C 1, power management chip IC1;
One comparison circuit, it comprises: divider resistance R4, R5, variable resistor W and comparator IC2, wherein, the end of oppisite phase of described comparator IC2 be connected in order to the described variable resistor W that reference voltage is provided, described power circuit provides operating voltage for it;
One testing circuit, by the described instrument transformer TA that is set on the phase line segment, capacitor C 2 and diode D7 form; The signal of its output is connected with described comparator IC2 in-phase end
One controlling output circuit comprises: capacitor C 3, resistance R 6, triode Q, diode D5; Certainly the output of control circuit is to described magnet spool XQ.When circuit is short-circuited fault, electric current moment increase on the described phase line segment 18.Thereby on the coil of described instrument transformer TA, induce voltage signal, through being input to the in-phase input end of comparison circuit comparator IC2 after described capacitor C 2 and diode D7 filtering and the rectification, and with the reference voltage of comparison circuit comparator IC2 inverting input relatively, thereby output high potential, and then input to described triode Q base stage, drive triode Q conducting, so there is triggering signal (signal of telecommunication) to be transferred to magnet spool XQ, make the electromagnet action, be that described armature moves upward, thereby the described trigger arm 22 that opens circuit is moved upward, described reset terminal stretches out described guide hole 111, finish the process that opens circuit of foregoing description, owing to described variohm W be set link to each other with the described first input end that obtains burning voltage, carry out dividing potential drop, with the voltage after partial value as reference voltage, so can pass through to adjust the resistance of described variohm W, and then adjust the threshold value of the triggering signal that makes comparator IC2 output.
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 (9)
1. circuit breaker with electromagnetic short circuit protection function, it comprises: a breaker body is characterized in that: also comprise:
One short-circuit detecting subelement detects in order to carry out short trouble, and produce a triggering signal when short circuit takes place;
One electromagnetism actuating mechanism, it is positioned at described breaker body, and is connected with described short-circuit detecting subelement, is receiving the dynamic and static contact separation that described triggering signal makes described breaker body.
2. according to the described circuit breaker with electromagnetic short circuit protection function of claim 1, it is characterized in that: described short-circuit detecting subelement is a tongue tube, and an end of described tongue tube is connected with phase line or zero line.
3. the circuit breaker with electromagnetic short circuit protection function according to claim 1 is characterized in that: described short-circuit detecting subelement comprises:
One power circuit after it obtains the signal of telecommunication from phase line and zero line, and is processed into a burning voltage;
One testing circuit changes in order to the electric current that detects on the phase line, produces one first detection signal;
One comparison circuit, it has the first input end that obtains a reference voltage and obtains described first detection signal, second input, and exports a control signal when short circuit takes place.
4. the circuit breaker with electromagnetic short circuit protection function according to claim 3, it is characterized in that: breaker body also comprises: a housing; Described housing is outside equipped with one in order to realize the handle of make-break operation; One end of described handle is connected with a link gear, the separation that realizes dynamic and static contact on the dynamic and static contact by link gear with contact.
5. the circuit breaker with electromagnetic short circuit protection function according to claim 4 is characterized in that: described electromagnetism actuating mechanism comprises:
One electromagnet, its solenoid that has is connected serially between described tongue tube and the phase line, or is connected serially between described tongue tube and the zero line;
One trigger arm that opens circuit, its lower end is connected with described electromagnet armature, the upper end of the described trigger arm that opens circuit is a reset terminal, it extends in described case top one pilot hole, the described trigger arm that opens circuit is moved along described pilot hole when action, and the described trigger arm that opens circuit also has a protuberance;
One poke rod, the one end overlaps mutually with a gangbar of described link gear, and the protuberance of the other end of described poke rod and the described trigger arm that opens circuit offsets.
6. the circuit breaker with electromagnetic short circuit protection function according to claim 4 is characterized in that: described electromagnetism actuating mechanism comprises:
One electromagnet, its solenoid that has one end is connected with described power circuit output end, and the other end is connected with the emitter of a triode, and described transistor base is connected with the output of described comparison circuit;
One trigger arm that opens circuit, its lower end is connected with described electromagnet armature, the upper end of the described trigger arm that opens circuit is a reset terminal, extend in described case top one pilot hole, the described trigger arm that opens circuit is moved along described pilot hole when action, and the described trigger arm that opens circuit also has a protuberance;
One poke rod, the one end overlaps mutually with a gangbar of described link gear, and the protuberance of the other end of described poke rod and the described trigger arm that opens circuit offsets.
7. the circuit breaker with electromagnetic short circuit protection function according to claim 6; it is characterized in that: described testing circuit is a tongue tube; one end of described tongue tube is connected with described power circuit output end, and the other end of described tongue tube is connected with described comparison circuit second input.
8. the circuit breaker with electromagnetic short circuit protection function according to claim 6; it is characterized in that: described testing circuit comprises: one is arranged on the instrument transformer on the phase line segment; a Bing Lian filter capacitor and a rectifier diode with it, described rectification after-current is first detection signal.
9. the circuit breaker with electromagnetic short circuit protection function according to claim 8; it is characterized in that: described comparison circuit comprises a comparator; also comprise: a variable resistance setting links to each other with the described first input end that obtains burning voltage, in order to the fiducial value of the triggering signal of adjusting the output of described comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201496121U CN201478227U (en) | 2009-04-07 | 2009-04-07 | Electromagnetic circuit breaker with short-circuit protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201496121U CN201478227U (en) | 2009-04-07 | 2009-04-07 | Electromagnetic circuit breaker with short-circuit protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201478227U true CN201478227U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201496121U Expired - Fee Related CN201478227U (en) | 2009-04-07 | 2009-04-07 | Electromagnetic circuit breaker with short-circuit protection function |
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|---|---|
| CN (1) | CN201478227U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347167A (en) * | 2010-07-21 | 2012-02-08 | 西门子公司 | Electrical switch |
| CN110318073A (en) * | 2019-08-08 | 2019-10-11 | 安徽铜冠有色金属（池州）有限责任公司 | A kind of electrolytic lead open circuit detection device |
-
2009
- 2009-04-07 CN CN2009201496121U patent/CN201478227U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347167A (en) * | 2010-07-21 | 2012-02-08 | 西门子公司 | Electrical switch |
| CN102347167B (en) * | 2010-07-21 | 2015-11-18 | 西门子公司 | Electric switch |
| CN110318073A (en) * | 2019-08-08 | 2019-10-11 | 安徽铜冠有色金属（池州）有限责任公司 | A kind of electrolytic lead open circuit detection device |
| CN110318073B (en) * | 2019-08-08 | 2021-05-11 | 安徽铜冠有色金属（池州）有限责任公司 | Open circuit detection equipment for electrolytic lead |
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