CN202405202U - Small-sized shunt breaker with self-detection function - Google Patents
Small-sized shunt breaker with self-detection function Download PDFInfo
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- CN202405202U CN202405202U CN 201120553577 CN201120553577U CN202405202U CN 202405202 U CN202405202 U CN 202405202U CN 201120553577 CN201120553577 CN 201120553577 CN 201120553577 U CN201120553577 U CN 201120553577U CN 202405202 U CN202405202 U CN 202405202U
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- controllable silicon
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Abstract
The utility model relates to a small-sized shunt breaker with a self-detection function. The technical scheme of the small-sized shunt breaker is as follows: the small-sized shunt breaker comprises a shell and an electronic release, wherein the electronic release is composed of an arrearage detection circuit, a fault detection circuit and a trigger execution circuit; the trigger execution circuit comprises a trip coil and a silicon-controlled rectifier; the positive pole of the silicon-controlled rectifier is connected with a live line through a first diode; a negative pole of the silicon-controlled rectifier is connected with a zero line through the trip coil and a normally-closed contact of a detection switch; the fault detection circuit comprises an indicator light and two resistances; one end of the indicator light is connected with the trip coil and a connecting end of a detection switch; the other end of the indicator light is connected with the zero line through a first resistance and a normally-open contact of the detection switch; one end of a second resistance is connected with the live line through another normally-open contact of the detection switch; one end of the second resistance is connected with a grid electrode of the silicon-controlled rectifier through a second diode; and an output end of the arrearage detection circuit is connected with the grid electrode of the silicon-controlled rectifier. The small-sized shunt breaker can help workers timely find internal faults of the breaker, prevents electric energy from being excessively consumed by users and avoids the occurrence of expense disputes.
Description
Technical field
The utility model relates to a kind of miniature circuit breaker that is used for low-voltage distributing line, belongs to the switching technique field.
Background technology
At present, electric power system is generally with the metering device of pre-paying kilowatt-hour meter as the user power utilization amount.When the dump energy in the pre-paying kilowatt-hour meter was negative value, the outside connection small shunt opening of ammeter circuit breaker sent the outage control signal, and small-sized shunt opening circuit breaker is broken off, and stopped the user being supplied power.Existence was obviously not enough when existing small-sized shunt opening circuit breaker used in the intelligent power distribution circuit: the shunt opening coil inner when circuit breaker breaks down with the electronic components such as controllable silicon of controlling the shunt opening coil; When causing circuit breaker to lose the shunted exciter tripping function; The staff of power supply department is difficult in time find; Even the dump energy in the intelligent electric meter was negative value and sent the outage control signal to circuit breaker this moment; Small-sized shunt opening circuit breaker can not break off, and so just is easy to cause electric energy user overconsumption, and then causes the economic dispute between electric energy user and the power supply department.
The utility model content
The purpose of the utility model is to provide a kind of small-sized shunt opening circuit breaker with self-checking function, makes the staff of power supply department can in time find and handle the circuit breaker internal fault, prevents electric energy user overconsumption.
The problem of the utility model realizes with following technical proposals:
A kind of small-sized shunt opening circuit breaker with self-checking function; Comprise housing and electronic trip unit in the formation; Said electronic trip unit is made up of arrearage testing circuit, failure detector circuit and triggering executive circuit; Said triggering executive circuit comprises tripping coil and controllable silicon, and the silicon controlled anode is through first diode line of starting to exchange fire, and negative electrode is successively through a normally-closed contact connecting to neutral line of tripping coil and sense switch; Said failure detector circuit comprises indicator light and two resistance; The link of indicator light one termination tripping coil and sense switch; The other end is successively through the normally opened contact connecting to neutral line of first resistance and sense switch; Second resistance, one end is through another normally opened contact of sense switch line of starting to exchange fire, and an end connects the silicon controlled grid through second diode; The output termination silicon controlled grid of said arrearage testing circuit.
Above-mentioned small-sized shunt opening circuit breaker with self-checking function; Said arrearage testing circuit is made up of triode, diode, resistance and electric capacity, wherein, and the 3rd resistance one termination silicon controlled anode; One end connects the silicon controlled grid through the 3rd diode and RC delay circuit successively; The collector electrode of said triode is connected between the anode of the 3rd resistance and the 3rd diode, and emitter is through the 4th diode connecting to neutral line, and the arrearage signal output part of pre-paying kilowatt-hour meter connects the emitter of triode successively through the 4th resistance, the 5th diode and first electric capacity; The 5th resistance one is terminated between the negative electrode and first electric capacity of the 5th diode, the base stage of a termination triode.
Above-mentioned small-sized shunt opening circuit breaker with self-checking function; Said RC delay circuit is made up of two resistance and two electric capacity; The negative electrode of the 6th resistance one termination the 3rd diode, a termination silicon controlled grid, the negative electrode of second electric capacity, one termination the 3rd diode; One termination silicon controlled negative electrode is connected between silicon controlled grid and the negative electrode after the 3rd electric capacity and the 7th resistance are connected in parallel.
Above-mentioned small-sized shunt opening circuit breaker with self-checking function is connected to voltage-stabiliser tube between the emitter of said triode and the collector electrode.
The utility model has been set up failure detector circuit on the basis of conditional electronic release; The staff of power supply department is through pressing the sense switch that is used to start failure detector circuit; Just can judge whether the inner shunt opening coil of miniature circuit breaker is normal with the controllable silicon of control shunt opening coil; Thereby can in time find and handle the circuit breaker internal fault, and prevent electric energy user overconsumption, avoid producing the expense dispute.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the outline drawing of three-phase breaker.
Fig. 2 is the outline drawing of single-phase circuit breaker.
Fig. 3 is the left view of Fig. 1 and Fig. 2.
Fig. 4 is the electrical schematic diagram of electronic trip unit.
Each label is among the figure: 1, housing; 2, attachment housings; 3, the handle of tripping mechanism; L, tripping coil; Q1, triode; D1～D5, diode; D6, voltage-stabiliser tube; Q2, controllable silicon; R1～R7, resistance; C1～C3, electric capacity; K, sense switch; DT, indicator light.
Embodiment
The utility model has increased by one group of analog line in breaker body, when circuit breaker normally moved, through irregularly pressing sense switch K, whether the shunt opening function that detects breaker body was normal, and can not influence the running status of circuit breaker.Signal lamp DT is bright when pressing sense switch K, and the shunt opening system of expression breaker body is normal, and indicator light DT representes when not working that breaker body shunt opening system breaks down, and needs in time to change circuit breaker.The utility model has fundamentally solved because of the overflow contradiction of the both sides of supply and demand that electricity consumption causes of circuit breaker reason causes users.
The course of work of the utility model:
Referring to Fig. 4, during operate as normal, the normally-closed contact of DPDT formula sense switch K is closed; The point of incoming cables, zero line N is connected with tripping coil L through the normally-closed contact of sense switch K, and zero line N also is connected with the negative electrode of diode D4; Thereby wiring board is formed ground connection, when prepayment intelligent ammeter dump energy is positive number, through a holding wire S output high voltage signal (being generally the hot voltage of 220V civil power); This voltage signal process R4 and D5 step-down rectifier are after R5 delivers to the base stage of NPN triode Q1; Make triode Q1 conducting, the D3 anode potential is dragged down, controllable silicon Q2 Triggerless; When prepayment intelligent ammeter dump energy was negative, the prepayment intelligent ammeter did not have high voltage signal output, not conducting of Q1, and hot voltage is through D1, R3; D4, R6 gives triggering signal of controllable silicon Q2, makes controllable silicon Q2 conducting; R6, R7, C2, C3 are delay trigger circuit, and the 1-2S that generally delays time is after the controllable silicon Q2 conducting; D1, Q2, loop of the L shaped one-tenth of tripping coil make tripping coil L action, and small-sized shunt opening circuit breaker is cut off the electricity supply.
When pressing sense switch K, zero line N is through resistance R 1, and signal lamp DT is connected to trip coil L, gives triggering signal of controllable silicon Q2 after live wire end process R2, the D2 rectification, makes controllable silicon Q2 conducting, thereby makes D1, Q2, tripping coil L, and DT, R1 form the loop.Prove the coil conducting if signal lamp DT is bright, faults such as nothing is blown, tripping prove that simultaneously controllable silicon Q2 is in normal condition.Because the R1 resistance is bigger, loop current is very little, and deficiency is so that tripping coil L action has guaranteed that promptly coil can not burnt out, and can avoid cutting off user's power supply again in testing process.
Claims (4)
1. small-sized shunt opening circuit breaker with self-checking function; It is characterized in that; Comprise housing (1) and electronic trip unit in the formation, said electronic trip unit is made up of arrearage testing circuit, failure detector circuit and triggering executive circuit, and said triggering executive circuit comprises tripping coil (L) and controllable silicon (Q2); The anode of controllable silicon (Q2) is through first diode (D1) line of starting to exchange fire, and negative electrode is successively through a normally-closed contact connecting to neutral line of tripping coil (L) and sense switch (K); Said failure detector circuit comprises indicator light (DT) and two resistance; The link of indicator light (DT) termination tripping coil (L) and sense switch (K); The other end is successively through the normally opened contact connecting to neutral line of first resistance (R1) and sense switch (K); Second resistance (R2) end is through another normally opened contact of sense switch (K) line of starting to exchange fire, and an end connects the grid of controllable silicon (Q2) through second diode (D2); The grid of the output termination controllable silicon (Q2) of said arrearage testing circuit.
2. according to the said small-sized shunt opening circuit breaker of claim 1 with self-checking function; It is characterized in that; Said arrearage testing circuit is made up of triode (Q1), diode, resistance and electric capacity; The anode of the 3rd resistance (R3) termination controllable silicon (Q2); One end connects the grid of controllable silicon (Q2) successively through the 3rd diode (D3) and RC delay circuit; The collector electrode of said triode (Q1) is connected between the anode of the 3rd resistance (R3) and the 3rd diode (D3), and emitter is through the 4th diode (D4) connecting to neutral line, and the arrearage signal output part of pre-paying kilowatt-hour meter connects the emitter of triode (Q1) successively through the 4th resistance (R4), the 5th diode (D5) and first electric capacity (C1); The 5th resistance (R5) one is terminated between the negative electrode and first electric capacity (C1) of the 5th diode (D5), the base stage of a termination triode (Q1).
3. according to claim 1 or 2 said small-sized shunt opening circuit breakers with self-checking function; It is characterized in that; Said RC delay circuit is made up of two resistance and two electric capacity; The negative electrode of the 6th resistance (R6) termination the 3rd diode (D3), the grid of a termination controllable silicon (Q2), the negative electrode of second electric capacity (C2) termination the 3rd diode (D3); The negative electrode of one termination controllable silicon (Q2) is connected between the grid and negative electrode of controllable silicon (Q2) after the 3rd electric capacity (C3) and the 7th resistance (R7) are connected in parallel.
4. according to the said small-sized shunt opening circuit breaker of claim 3, it is characterized in that, be connected to voltage-stabiliser tube (D6) between the emitter of said triode (Q1) and the collector electrode with self-checking function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120553577 CN202405202U (en) | 2011-12-27 | 2011-12-27 | Small-sized shunt breaker with self-detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120553577 CN202405202U (en) | 2011-12-27 | 2011-12-27 | Small-sized shunt breaker with self-detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202405202U true CN202405202U (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120553577 Expired - Fee Related CN202405202U (en) | 2011-12-27 | 2011-12-27 | Small-sized shunt breaker with self-detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202405202U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698696A (en) * | 2013-12-18 | 2014-04-02 | 国家电网公司 | Money-owning tripping switch detection device |
-
2011
- 2011-12-27 CN CN 201120553577 patent/CN202405202U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698696A (en) * | 2013-12-18 | 2014-04-02 | 国家电网公司 | Money-owning tripping switch detection device |
| CN103698696B (en) * | 2013-12-18 | 2016-02-24 | 国家电网公司 | Arrearage trip switch pick-up unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20171227 |