CN103944139A - No-voltage delayer of undervoltage coil of circuit breaker - Google Patents
No-voltage delayer of undervoltage coil of circuit breaker Download PDFInfo
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- CN103944139A CN103944139A CN201410129594.6A CN201410129594A CN103944139A CN 103944139 A CN103944139 A CN 103944139A CN 201410129594 A CN201410129594 A CN 201410129594A CN 103944139 A CN103944139 A CN 103944139A
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Abstract
The invention discloses a no-voltage delayer of an undervoltage coil of a circuit breaker. The no-voltage delayer comprises a transformer T, a charging circuit and a time delay circuit. The charging circuit and the time delay circuit are connected with the transformer T. The charging circuit comprises a relay J, a capacitor C1, a capacitor C2, a resistor R2 and a rectifier bridge D1. The time delay circuit comprises a capacitor C3, a resistor R1, a resistor R3, a switch K1, a switch K2, a rectifier bridge D2 and a triode S. The rectifier bridge D1 of the charging circuit is connected to a secondary winding of the transformer T. The switch K1 of the time delay circuit is connected to the secondary winding of the transformer T. In this way, the no-voltage delayer of the undervoltage coil of the circuit breaker is installed on the circuit breaker, so that the original circuit breaker achieves the undervoltage delay function, installation is extremely easy and convenient, and reliability is better.
Description
Technical field
The present invention relates to appliance field, relate in particular to the decompression delayer of the under-voltage coil of a kind of circuit breaker.
Background technology
Circuit breaker drives under-voltage de-mouth mechanism by " under-voltage coil ", realizes power-off protection object.You Liaogai mechanism, circuit breaker just can not be as isolating switch, while incoming call once again after having a power failure suddenly, start to the electrical appliance such as motor, electric heater being connected in circuit and bring accident suddenly, so " under-voltage coil " wants charged adhesive whether to have voltage to detect during breaker closing always, just in case " under-voltage coil " dead electricity discharges, circuit breaker will trip at once.
In the bad place of power quality, power supply is sometimes because the factors such as heavy load startup make voltage cause fluctuation, fluctuation may cause " under-voltage coil " improper dead electricity, so that make the now not power-off of the improper tripping operation-power supply of circuit breaker, be only a very short fluctuation of time, recover normal later at once.In our life, feel that sometimes lamp is exactly secretly suddenly this situation once, the tripping operation that this improper fluctuation causes, brings heavy losses and unwatched hotel is caused confusion to quantity-produced production line.
For avoiding mains fluctuations to cause the generation of improper tripping operation, on the DW45 circuit breaker of the nineties whole nation co-design, configure " under-voltage time delay " function, in reference time delay (1-3 second) even " under-voltage coil " two ends lower than starting resistor, iron core also can not discharge, can avoid the little fluctuation of supply voltage and not trip, if brownout, even decompression, this circuit is also inoperative.The early stage DW10 producing, DW15, DW17, ME, the type frame-type circuit breakers such as DWE and all DZ series breaker of plastic casing all do not have this function, but user exists these switch time delay demands.
Summary of the invention
The technical problem that the present invention mainly solves is to provide the decompression delayer of the under-voltage coil of a kind of circuit breaker, this decompression delayer is as the adapter of circuit breaker decompression coil, on the circuit breaker that needs time delay, install this adapter additional, just can be as novel intelligent breaker, had under-voltage delay function, not only installed additional very easyly, and reliability is better, while needs, restore to the original state also very convenient later.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the decompression delayer of the under-voltage coil of a kind of circuit breaker, comprise: transformer T, charging circuit and delay circuit, described charging circuit is connected with described transformer T respectively with described delay circuit;
Described charging circuit comprises: relay J, capacitor C 1, capacitor C 2, resistance R 2 and rectifier bridge D1;
Described delay circuit comprises: capacitor C 3, resistance R 1, resistance R 3, K switch 1, K switch 2, rectifier bridge D2 and triode S;
The described rectifier bridge D1 of described charging circuit is connected on the secondary winding transformer of described transformer T, described relay J is connected with described capacitor C 2, one end of described relay J is connected with the negative pole of described capacitor C 2, and the other end is connected with the negative pole of capacitor C 1 and one end of described rectifier bridge D1; The other end of described rectifier bridge D1 is connected with the positive pole of described capacitor C 2 with the positive pole of described capacitor C 1;
The described K switch 1 of described delay circuit circuit is connected on the secondary winding transformer of described transformer T, and described K switch 1 is connected with described resistance R 1, and one end of described resistance R 1 is connected with power supply, and the other end is connected with described K switch 1; Described rectifier bridge D2 is connected with described K switch 1; Described rectifier bridge D2 is connected with described triode S; The positive pole of described capacitor C 3 is connected with one end of described rectifier bridge D2 and one end of under-voltage coil, and the negative pole of described capacitor C 3 is connected with described K switch 2.
In a preferred embodiment of the present invention, described resistance R 2 in parallel also in described capacitor C 2.
In a preferred embodiment of the present invention, described rectifier bridge D2 is connected with one end of described K switch 2 and the emitter of described triode S, and the collector electrode of described triode S is connected with described K switch 2.
In a preferred embodiment of the present invention, the upper also described resistance R 3 in parallel of described triode S.
In a preferred embodiment of the present invention, described capacitor C 2 is decompression capacitor.
In a preferred embodiment of the present invention, described resistance R 1 is current-limiting resistance.
In a preferred embodiment of the present invention, described resistance R 2 is discharge resistance.
In a preferred embodiment of the present invention, described resistance R 3 is adjustable resistance.
The invention has the beneficial effects as follows: the decompression delayer of the under-voltage coil of circuit breaker of the present invention is arranged on the circuit breaker that needs time delay, make circuit breaker originally have under-voltage delay function, not only install additional very easyly, and reliability is better.
Brief description of the drawings
Fig. 1 is the principle schematic of the decompression delayer of the under-voltage coil of circuit breaker of the present invention.
Fig. 2 is the connection diagram of the decompression delayer of the under-voltage coil of circuit breaker of the present invention.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
Refer to Fig. 1 and Fig. 2, the embodiment of the present invention comprises: the decompression delayer of the under-voltage coil of a kind of circuit breaker, comprising: transformer T, charging circuit and delay circuit, and described charging circuit is connected with described transformer T respectively with described delay circuit;
Described charging circuit comprises: relay J, capacitor C 1, capacitor C 2, resistance R 2 and rectifier bridge D1;
Described delay circuit comprises: capacitor C 3, resistance R 1, resistance R 3, K switch 1, K switch 2, rectifier bridge D2 and triode S.
The described rectifier bridge D1 of described charging circuit is connected on the secondary winding transformer of described transformer T, and described rectifier bridge D1 is connected with the secondary 12V power supply of described transformer T.
Described relay J is connected with described decompression capacitor C2; one end of described relay J is connected with the negative pole of decompression capacitor C2; the other end is connected with the negative pole of capacitor C 1 and one end of described rectifier bridge D1, and described relay J has played the effects such as automatic adjusting, safeguard protection, change-over circuit in circuit.
The other end of described rectifier bridge D1 is connected with the positive pole of described decompression capacitor C2 with the positive pole of described capacitor C 1, and described rectifier bridge D1 becomes direct current by the characteristic of diode by AC rectification.
The upper also described discharge resistance R2 in parallel of described decompression capacitor C2, described discharge resistance R2 is for discharging described decompression capacitor C2 two ends.
The described K switch 1 of described delay circuit circuit is connected on the secondary winding transformer of described transformer T, and described K switch 1 is connected with the secondary 12V power supply of described transformer T.
Described K switch 1 is connected with described current-limiting resistance R1, and one end of described current-limiting resistance R1 is connected with power supply, and the other end is connected with described K switch 1, and described current-limiting resistance R1 has played the effect of dividing potential drop.
Described rectifier bridge D2 is connected with described K switch 1, and described rectifier bridge D2 becomes direct current by the characteristic of diode by AC rectification.
Described rectifier bridge D2 is connected with described K switch 2, described rectifier bridge D2 is connected with one end of described K switch 2 and the emitter of described triode S, the collector electrode of described triode S is connected with described K switch 2, and described triode S has the effect of amplified current.
The upper also described adjustable resistance R3 in parallel of described triode S, described adjustable resistance R3 can be for the size of artificial regulating resistance.
The positive pole of described capacitor C 3 is connected with one end of described rectifier bridge D2 and one end of under-voltage coil, the negative pole of described capacitor C 3 is connected with described K switch 2, described capacitor C 3 is for stored charge, in the time of power supply instant cut-off to under-voltage coil discharge, make it keep attracting state, reach time delay object.
The operation principle of the decompression delayer to the under-voltage coil of circuit breaker of the present invention describes in detail below.
In the time of power connection, in charging circuit, the 12V power rectifier bridge D1 of T level of transformer is through over commutation, filtering, provide power supply to relay J, the decompression capacitor C2 energising moment of connecting with relay J is equivalent to short circuit, thereby make K switch 1 adhesive, decompression capacitor C2 is full of after electricity, in loop, there is no electric current, K switch 1 is discharged, the action of K switch 1 has been equivalent to button crawl once, as long as electric charge does not bleed off in decompression capacitor C2, K switch 1 just not adhesive again, keeps discharging (original) state.
When the following period of time of K switch 1 adhesive, in delay circuit, contact is by 220V supply voltage by current-limiting resistance R1, and the direct voltage after rectifier bridge D2 rectification is directly added to under-voltage coil two ends, makes under-voltage coil by large direct current adhesive; After relay J discharges, its contact is transformed into 12V rectification and outputs to under-voltage coil through triode S fine setting loop, under-voltage coil is after K switch 2 adhesives, by regulate adjustable resistance R3 maintain voltage at direct current 6-12V(because direct current does not have induction reactance, if exchange maintain voltage, overcome more than induction reactance needs 160V), therefore long-term low dc voltage adhesive is to the under-voltage coil life-span with energy-conservationly have a very large Practical significance.
This direct voltage shunt capacitance C3, stored charge in capacitor C 3, in the time of power supply instant cut-off to under-voltage coil discharge, make K switch 2 keep attracting state, reach time delay object, delay time and capacitance size and direct voltage height have relation, but not very accurate requirement, therefore as long as in 1-3 time second.
R2 is the discharge resistance of decompression capacitor C2, after whole voltage power-off (before starting for the second time), electric charge on decompression capacitor C2 bleeds off by discharge resistance R2, for starting and prepare for the second time, the size of discharge resistance R2 is exactly the length of discharge time, and discharge time, oversize can impact can not start next time.
Compared with prior art, the decompression delayer of the under-voltage coil of circuit breaker of the present invention is arranged on the circuit breaker that needs time delay, make circuit breaker originally there is under-voltage delay function, not only install additional very easy, and reliability is better, this device is except effectively having increased and escaped power-supply fluctuation, outside delay cut-off object, normally in service at under-voltage coil, also have and eliminate the noise, energy-conservation, multiple benefits such as life-saving, also can be used in the DW45 intelligent breaker of national co-design, substitute all-electronic under-voltage coil controller, the electronic component of all-electronin controller is always in high pressure, reliability is than poor with transformer, and high-pressure electronic element price also can be high.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. a decompression delayer for the under-voltage coil of circuit breaker, is characterized in that, comprising: transformer T, charging circuit and delay circuit, and described charging circuit is connected with described transformer T respectively with described delay circuit;
Described charging circuit comprises: relay J, capacitor C 1, capacitor C 2, resistance R 2 and rectifier bridge D1;
Described delay circuit comprises: capacitor C 3, resistance R 1, resistance R 3, K switch 1, K switch 2, rectifier bridge D2 and triode S;
The described rectifier bridge D1 of described charging circuit is connected on the secondary winding transformer of described transformer T, described relay J is connected with described capacitor C 2, one end of described relay J is connected with the negative pole of described capacitor C 2, and the other end is connected with the negative pole of capacitor C 1 and one end of described rectifier bridge D1; The other end of described rectifier bridge D1 is connected with the positive pole of described capacitor C 2 with the positive pole of described capacitor C 1;
The described K switch 1 of described delay circuit circuit is connected on the secondary winding transformer of described transformer T, and described K switch 1 is connected with described resistance R 1, and one end of described resistance R 1 is connected with power supply, and the other end is connected with described K switch 1; Described rectifier bridge D2 is connected with described K switch 1; Described rectifier bridge D2 is connected with described triode S; The positive pole of described capacitor C 3 is connected with one end of described rectifier bridge D2 and one end of under-voltage coil, and the negative pole of described capacitor C 3 is connected with described K switch 2.
2. the decompression delayer of the under-voltage coil of circuit breaker according to claim 1, is characterized in that: described resistance R 2 in parallel also in described capacitor C 2.
3. the decompression delayer of the under-voltage coil of circuit breaker according to claim 1, is characterized in that: described rectifier bridge D2 is connected with one end of described K switch 2 and the emitter of described triode S, and the collector electrode of described triode S is connected with described K switch 2.
4. the decompression delayer of the under-voltage coil of circuit breaker according to claim 1, is characterized in that: the upper also described resistance R 3 in parallel of described triode S.
5. the decompression delayer of the under-voltage coil of circuit breaker according to claim 1, is characterized in that: described capacitor C 2 is decompression capacitor.
6. the decompression delayer of the under-voltage coil of circuit breaker according to claim 1, is characterized in that: described resistance R 1 is current-limiting resistance.
7. the decompression delayer of the under-voltage coil of circuit breaker according to claim 2, is characterized in that: described resistance R 2 is discharge resistance.
8. the decompression delayer of the under-voltage coil of circuit breaker according to claim 4, is characterized in that: described resistance R 3 is adjustable resistance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410129594.6A CN103944139B (en) | 2014-04-02 | 2014-04-02 | The decompression delayer of breaker is under-voltage coil |
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| CN201410129594.6A CN103944139B (en) | 2014-04-02 | 2014-04-02 | The decompression delayer of breaker is under-voltage coil |
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| CN103944139A true CN103944139A (en) | 2014-07-23 |
| CN103944139B CN103944139B (en) | 2017-06-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817544A (en) * | 2020-08-14 | 2020-10-23 | 珠海格力电器股份有限公司 | Frequency converter starting device, method and frequency converter |
| CN112763820A (en) * | 2020-12-22 | 2021-05-07 | 深圳供电局有限公司 | Undervoltage coil detection device and power distribution cabinet detection system |
| CN114825300A (en) * | 2022-06-27 | 2022-07-29 | 深圳市芯卓微科技有限公司 | Current-limiting delay circuit and current-limiting delay chip |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4412267A (en) * | 1980-02-06 | 1983-10-25 | Eaton Corporation | Time-delay current sensing circuit breaker relay |
| CN2149702Y (en) * | 1993-02-11 | 1993-12-15 | 张希文 | Protective circuit arrangement for domestic electric appliance with time accumulation function |
| CN102709874A (en) * | 2012-05-30 | 2012-10-03 | 江苏国星电器有限公司 | High-voltage under-voltage release |
| CN203883446U (en) * | 2014-04-02 | 2014-10-15 | 江苏永明电气有限公司 | Circuit breaker undervoltage coil no-voltage time delay device |
-
2014
- 2014-04-02 CN CN201410129594.6A patent/CN103944139B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4412267A (en) * | 1980-02-06 | 1983-10-25 | Eaton Corporation | Time-delay current sensing circuit breaker relay |
| CN2149702Y (en) * | 1993-02-11 | 1993-12-15 | 张希文 | Protective circuit arrangement for domestic electric appliance with time accumulation function |
| CN102709874A (en) * | 2012-05-30 | 2012-10-03 | 江苏国星电器有限公司 | High-voltage under-voltage release |
| CN203883446U (en) * | 2014-04-02 | 2014-10-15 | 江苏永明电气有限公司 | Circuit breaker undervoltage coil no-voltage time delay device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817544A (en) * | 2020-08-14 | 2020-10-23 | 珠海格力电器股份有限公司 | Frequency converter starting device, method and frequency converter |
| CN112763820A (en) * | 2020-12-22 | 2021-05-07 | 深圳供电局有限公司 | Undervoltage coil detection device and power distribution cabinet detection system |
| CN114825300A (en) * | 2022-06-27 | 2022-07-29 | 深圳市芯卓微科技有限公司 | Current-limiting delay circuit and current-limiting delay chip |
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|---|---|
| CN103944139B (en) | 2017-06-27 |
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