CN204179637U - The under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing - Google Patents
The under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing Download PDFInfo
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- CN204179637U CN204179637U CN201420642741.5U CN201420642741U CN204179637U CN 204179637 U CN204179637 U CN 204179637U CN 201420642741 U CN201420642741 U CN 201420642741U CN 204179637 U CN204179637 U CN 204179637U
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Abstract
The under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing, comprises bleeder circuit, ac-dc converter circuit, reference voltage circuit, comparison circuit and circuits for triggering; The input of bleeder circuit is connected with AC380V, AC220V and shunt opening signal respectively, the output of bleeder circuit connects the input of ac-dc converter circuit, the output of ac-dc converter circuit connects circuits for triggering successively after reference voltage circuit, comparison circuit, the magnetic flow convertor of the output connecting breaker of circuits for triggering.The utility model not only has under-voltage protection function and shunt opening defencive function simultaneously, and easy for installation, reliable in action, can meet the demand that user installs multiple annex in breaker of plastic casing simultaneously.
Description
Technical field
The utility model relates in low-voltage distribution resist technology field, particularly a kind of breaker of plastic casing control module of threading off.
Background technology
Breaker of plastic casing is common industry and Domestic distribution protective device, can realize the overload of distribution line and the accurate protection of short trouble.Breaker of plastic casing is also known as molded case circuit breaker, all parts are all sealed in shell, auxiliary contact, device for under-voltage releasing equipment and shunt release etc. adopt modularization more, general breaker of plastic casing should meet the requirement of installing as annexes such as device for under-voltage releasing equipment, shunt release, auxiliary contact, alarm actuating contacts, sometimes also require any two groups of annexes are installed simultaneously, but due to plastic casing inner structure closely, breaker of plastic casing cannot overhaul substantially.Breaker of plastic casing many employings manual operation, Large Copacity can select electronic deciliter.For the Large Copacity breaker of plastic casing of electronic deciliter, because controller hardware circuit has been installed in its inner space, cannot realize wherein installing while any two groups of annexes, can not meet the need of market.
Utility model content
The purpose of this utility model is the drawback for prior art, provides a kind of breaker of plastic casing dropout control module device for under-voltage releasing equipment, shunt release combined, and on the basis saving circuit breaker internal space, meets the requirement that multiple accessories is installed.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
The under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing, it comprises circuit breaker, and bleeder circuit, ac-dc converter circuit, reference voltage circuit, comparison circuit and circuits for triggering; The input of bleeder circuit is connected with AC380V, AC220V and shunt opening signal respectively, the output of bleeder circuit connects the input of ac-dc converter circuit, the output of ac-dc converter circuit connects circuits for triggering successively after reference voltage circuit, comparison circuit, the magnetic flow convertor of the output connecting breaker of circuits for triggering.
The concrete structure of described bleeder circuit is: bleeder circuit comprises the 4th resistance and the 5th resistance that are connected in series, the upper end of the 4th resistance connects AC380V, 4th is connected AC220V with the serial connection point of the 5th resistance, and the frequent make and break in lower end of the 5th resistance is closed and connected shunt opening signal.
The concrete structure of described ac-dc converter circuit is: ac-dc converter circuit comprises step-down transformer, rectifier bridge and filter capacitor, the primary coil of step-down transformer is connected in the two ends of bleeder circuit the 5th resistance in parallel, the secondary coil of step-down transformer connects the ac input end of rectifier bridge, and filter capacitor is connected in parallel between the positive output end of rectifier bridge and negative output terminal.
The concrete structure of described reference voltage circuit is: reference voltage circuit comprises the series arm be made up of the first resistance and voltage-stabiliser tube be connected in parallel between rectification bridge output end, the upper end of the first resistance connects the positive output end of ac-dc converter circuit, the lower end of the first resistance connects the negative pole of voltage-stabiliser tube, and the positive pole of voltage-stabiliser tube connects the negative output terminal of ac-dc converter circuit; The two ends of described voltage-stabiliser tube are connected in parallel voltage monitor.
The concrete structure of described comparison circuit is: described comparison circuit comprises comparator and is connected in the series arm be made up of the second resistance and the 3rd resistance between rectifier bridge two output in parallel; The output of reference voltage circuit voltage monitor connects the positive input terminal of comparator, and the negative input end of comparator connects the serial connection point of the second resistance and the 3rd resistance, and the output of comparator connects the input of circuits for triggering.
The concrete structure of described circuits for triggering is: circuits for triggering are triode, the base stage of triode connects the output of comparison circuit comparator, the collector electrode of triode connects the positive output end of ac-dc converter circuit, and the magnetic flow convertor of emitter in breaker of plastic casing of triode connects the negative output terminal of ac-dc converter circuit.
Owing to have employed above technical scheme, acquired by the utility model, technological progress is as follows.
Undervoltage tripping control module and shunted exciter tripping control module combine by the utility model, utilize original magnetic flow convertor in breaker of plastic casing that breaker mechanism is threaded off, eliminate the solenoid in traditional device for under-voltage releasing equipment and shunt release, on the basis not taking circuit breaker internal space, for the installation of other annexes creates condition.
Accompanying drawing explanation
Fig. 1 is electrical schematic diagram of the present utility model;
Number in the figure inventory is: T, step-down transformer, D, rectifier bridge, Q, triode, C, filter capacitor, CB, magnetic flow convertor, SW, normally closed switch, F, comparator, V, voltage-stabiliser tube, U, supply monitor, R1 ~ R5, the first resistance ~ the 5th resistance.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
The under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing, mainly comprises bleeder circuit, ac-dc converter circuit, reference voltage circuit, comparison circuit and circuits for triggering.The input of bleeder circuit is connected with AC380V, AC220V and shunt opening signal COM respectively, the output of bleeder circuit connects the input of ac-dc converter circuit, the output of ac-dc converter circuit connects circuits for triggering successively after reference voltage circuit, comparison circuit, the magnetic flow convertor of the output connecting breaker of circuits for triggering.
The utility model does not arrange the action executing element (namely utilizing the electromagnetic force of solenoid to drive the mechanism of circuit breaker) of device for under-voltage releasing equipment and shunt release; but carry out breaking-closing operating by the action executing element (i.e. magnetic flow convertor CB) controlling circuit breaker; be attached in a module by device for under-voltage releasing equipment control module and shunt release control module and go; allow magnetic flow convertor CB while guarantee breaker protection function, perform the dropout instruction of device for under-voltage releasing equipment and shunt release.
In utility model works process, when receiving less than 70% normal voltage signal or after receiving shunt opening signal, under-voltage shunted exciter tripping control module sends instruction to the magnetic flow convertor CB of circuit breaker, magnetic flow convertor CB action, shift circuit breaker draw bar onto, circuit breaker is disconnected.
The utility model is specific in the present embodiment, and its electrical schematic diagram as shown in Figure 1.
Wherein, bleeder circuit comprises the 4th resistance R4 and the 5th resistance R5 that are connected in series.The upper end of the 4th resistance connects AC380V, and the 4th resistance is connected AC220V with the serial connection point of the 5th resistance, and the lower end of the 5th resistance connects shunt opening signal through normally closed switch (SW).
When bleeder circuit receives AC380V voltage, after the 4th resistance R4 through being connected in series and the 5th resistance R5 is dropped to 220V, flow to ac-dc converter circuit again; When input voltage is 220V, is directly connected on after on the 5th resistance R5 and flows to ac-dc converter circuit.
Ac-dc converter circuit comprises step-down transformer T, rectifier bridge D and filter capacitor C.The primary coil of step-down transformer T is connected in the two ends of bleeder circuit the 5th resistance R5 in parallel, and the secondary coil of step-down transformer T connects the ac input end of rectifier bridge D, between the positive output end that filter capacitor C is connected in rectifier bridge D in parallel and negative output terminal.Step-down transformer T flows to rectifier bridge D after being used for that the alternating current of input is converted to 12V voltage and carries out rectification, and the direct current after rectification is other circuit supplies after filter capacitor C filtering.
Reference voltage circuit comprises the first resistance R1, voltage-stabiliser tube V and voltage monitor U.The series arm be made up of the first resistance R1 and voltage-stabiliser tube V is connected in parallel between two outputs of rectifier bridge D, the upper end of the first resistance R1 connects the positive output end of ac-dc converter circuit, the lower end of the first resistance R1 connects the negative pole of voltage-stabiliser tube V, and the positive pole of voltage-stabiliser tube V connects the negative output terminal of ac-dc converter circuit; Voltage monitor U is connected in the two ends of voltage-stabiliser tube V in parallel.Voltage-stabiliser tube V exports the constant voltage of+5V, and this voltage is input to comparison circuit after supply monitor U adjusts, and voltage monitor U can improve the output services state of voltage-stabiliser tube V effectively.
Comparison circuit comprises the second resistance R2, the 3rd resistance R3 and comparator F.The series arm be made up of the second resistance R2 and the 3rd resistance R3 is connected in parallel between two outputs of rectifier bridge D; The output of reference voltage circuit voltage monitor U connects the positive input terminal of comparator F, and the negative input end of comparator F connects the serial connection point of the second resistance R2 and the 3rd resistance R3, and the output of comparator F connects the input of circuits for triggering.
In comparison circuit, the the second resistance R2 be connected in series and the 3rd resistance R3 forms a little dividing potential drop branch road, its partial pressure value is determined by the resistance of the output voltage of rectifier bridge D and the second resistance R2, the 3rd resistance R3, and the output voltage of this bleeder circuit receives the negative input end of comparator F.
Circuits for triggering are triode Q, the base stage of triode connects the output of comparison circuit comparator F, the collector electrode of triode connects the positive output end of ac-dc converter circuit, and the magnetic flow convertor CB of emitter in breaker of plastic casing of triode connects the negative output terminal of ac-dc converter circuit.
The course of work of the present embodiment is as described below:
When input voltage does not occur under-voltage 70% and do not receive shunt opening signal, whole circuit does not set up electric current and voltage, and magnetic flow convertor CB is failure to actuate.When input voltage drops to less than 70% of normal value, the voltage of comparator negative input end will lower than the level of positive input terminal, and comparator F will export a high level, makes triode Q conducting, so just has electric current to flow through magnetic flow convertor CB, release action.Shunt opening signal COM connects the lower end of bleeder circuit the 5th resistance through normally closed switch SW, when receiving shunt opening signal, normally closed switch SW disconnects, and voltage input signal reduces to 0V lower than 70% of normal value through time delay under the effect of filter capacitor C, reach above-mentioned undervoltage tripping condition, release action.
In the present embodiment; triode Q have employed the connected mode of emitter following; between the emitter that the winding coil of magnetic flow convertor CB is connected on triode Q and ground; after the winding coil flowing through magnetic flow convertor CB when electric current makes release action; the current potential of triode Q emitter will increase; finally cause triode Q to end, so just protect magnetic flow convertor CB.In addition, to be energized for a long time the phenomenon that also there will not be and burn magnetic flow convertor even if the parameter designing of circuit should be able to ensure coil.
Claims (6)
1. the under-voltage shunted exciter tripping control module of breaker of plastic casing, it comprises circuit breaker, it is characterized in that: it also comprises bleeder circuit, ac-dc converter circuit, reference voltage circuit, comparison circuit and circuits for triggering; The input of bleeder circuit is connected with AC380V, AC220V and shunt opening signal respectively, the output of bleeder circuit connects the input of ac-dc converter circuit, the output of ac-dc converter circuit connects circuits for triggering successively after reference voltage circuit, comparison circuit, the magnetic flow convertor of the output connecting breaker of circuits for triggering.
2. the under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing according to claim 1, it is characterized in that: described bleeder circuit comprises the 4th resistance (R4) and the 5th resistance (R5) that are connected in series, the upper end of the 4th resistance connects AC380V, 4th resistance is connected AC220V with the serial connection point of the 5th resistance, and the lower end of the 5th resistance connects shunt opening signal through normally closed switch (SW).
3. the under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing according to claim 2, it is characterized in that: described ac-dc converter circuit comprises step-down transformer (T), rectifier bridge (D) and filter capacitor (C), the primary coil of step-down transformer (T) is connected in the two ends of bleeder circuit the 5th resistance (R5) in parallel, the secondary coil of step-down transformer (T) connects the ac input end of rectifier bridge (D), between the positive output end that filter capacitor (C) is connected in rectifier bridge (D) in parallel and negative output terminal.
4. the under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing according to claim 3, it is characterized in that: described reference voltage circuit comprises the series arm be made up of the first resistance (R1) and voltage-stabiliser tube (V) be connected in parallel between rectifier bridge (D) output, the upper end of the first resistance (R1) connects the positive output end of ac-dc converter circuit, the lower end of the first resistance (R1) connects the negative pole of voltage-stabiliser tube (V), and the positive pole of voltage-stabiliser tube (V) connects the negative output terminal of ac-dc converter circuit; The two ends of described voltage-stabiliser tube (V) are connected in parallel voltage monitor (U).
5. the under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing according to claim 4, is characterized in that: described comparison circuit comprises comparator (F) and is connected in the series arm be made up of the second resistance (R2) and the 3rd resistance (R3) between rectifier bridge (D) two output in parallel; The output of reference voltage circuit voltage monitor (U) connects the positive input terminal of comparator (F), the negative input end of comparator (F) connects the serial connection point of the second resistance (R2) and the 3rd resistance (R3), and the output of comparator (F) connects the input of circuits for triggering.
6. the under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing according to claim 5, it is characterized in that: described circuits for triggering are triode (Q), the base stage of triode connects the output of comparison circuit comparator (F), the collector electrode of triode connects the positive output end of ac-dc converter circuit, and the magnetic flow convertor of emitter in breaker of plastic casing (CB) of triode connects the negative output terminal of ac-dc converter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642741.5U CN204179637U (en) | 2014-10-31 | 2014-10-31 | The under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642741.5U CN204179637U (en) | 2014-10-31 | 2014-10-31 | The under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing |
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| Publication Number | Publication Date |
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| CN204179637U true CN204179637U (en) | 2015-02-25 |
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| CN201420642741.5U Expired - Fee Related CN204179637U (en) | 2014-10-31 | 2014-10-31 | The under-voltage shunted exciter tripping control module of a kind of breaker of plastic casing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300413A (en) * | 2015-11-27 | 2016-02-03 | 黎立峰 | Multifunctional pointer type instrument apparatus and method thereof for controlling and protecting device |
-
2014
- 2014-10-31 CN CN201420642741.5U patent/CN204179637U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300413A (en) * | 2015-11-27 | 2016-02-03 | 黎立峰 | Multifunctional pointer type instrument apparatus and method thereof for controlling and protecting device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 072550, No. 266 Chaoyang North Street, Hebei, Baoding province (king store Industrial Park) Patentee after: Hebei Bao Kai electric Limited by Share Ltd Address before: 072550, No. 266 Chaoyang North Street, Hebei, Baoding province (king store Industrial Park) Patentee before: Hebei Bao Kai Electric Applicance Co., Ltd |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20201031 |
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| CF01 | Termination of patent right due to non-payment of annual fee |