CN201465912U - Slow-break device of universal circuit breaker/contactor - Google Patents
Slow-break device of universal circuit breaker/contactor Download PDFInfo
- Publication number
- CN201465912U CN201465912U CN2009200926989U CN200920092698U CN201465912U CN 201465912 U CN201465912 U CN 201465912U CN 2009200926989 U CN2009200926989 U CN 2009200926989U CN 200920092698 U CN200920092698 U CN 200920092698U CN 201465912 U CN201465912 U CN 201465912U
- Authority
- CN
- China
- Prior art keywords
- contactor
- diode
- slow
- circuit breaker
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model discloses a slow-break device of a universal circuit breaker/contactor. A neutral line of an alternating-current three-phase circuit is provided with a relay normally-closed contact which is connected with the contactor by a rectifying circuit; the other end of the contactor is connected to any phase of alternating-current three phases; the contactor is connected with a discharging capacitor in parallel; the neutral line is also provided with a bridge-type rectifying circuit; the output end of the bridge-type rectifying circuit is connected with a relay which is connected with an energy-storage capacitor in parallel; and the energy-storage capacitor is connected with a relay normally-opened contact II in series. The slow-break device of the universal circuit breaker/contactor can prevent the universal circuit breaker and the contactor from tripping when momentary loss of voltage occurs on a reclosing power supply system due to lightning strike and momentary short circuit, and the operations of making and breaking are consistent with the operations of making and breaking. When the accident interruption duration exceeds the slow-break setting time, the universal circuit breaker and the contactor are tripped so as to achieve the purposes of escaping momentary stop of voltage and keeping continuous production without stopping, thus solving the phenomena of stopping machines and production caused by momentary stop fundamentally.
Description
Technical field
The utility model belongs to a kind of control device, specifically relates to a kind of slow-break device that is applied on universal circuit breaker, the contactor.
Background technology
The way of present domestic inhibition voltage fluctuation is a lot, reactor is installed in common having at line outlet additional, power distribution equipment is carried out reactive power compensation, ripple device, dynamic electric voltage recovery device, power distribution system quality of electric power unified controller are considered in the source that is equiped with, indivedual areas, but no matter adopt above-mentioned what way, all can not solve the problem that fluctuation of the voltage degree of depth even dead electricity exist, and input is very big, maintenance cost is also high.
Summary of the invention
The purpose of this utility model provides a kind of slow-break device that can effectively suppress voltage fluctuation.
For achieving the above object, the utility model is by the following technical solutions:
The utility model is provided with the relay normally-closed contact on the neutral line that exchanges three-phase circuit, the relay normally-closed contact connects contactor by rectification circuit, the other end of contactor is connected to any phase that exchanges in the three-phase, and described contactor and discharge capacity are connected in parallel; Also be provided with bridge rectifier on the neutral line, the output of bridge rectifier connects relay, and relay and storage capacitor are connected in parallel, the storage capacitor setting of connecting with relay normally open contact II.
Above-mentioned rectification circuit comprises positive half cycle rectification circuit and negative half period rectification circuit; Above-mentioned positive half cycle rectification circuit comprises diode I and the diode I I that is in series with diode I; Above-mentioned negative half period rectification circuit comprises the diode I that is arranged in parallel with contactor, and the negative electrode of diode I connects the common port of diode I negative electrode and diode I I anode.
The negative electrode of above-mentioned diode I I connects the forced exciting loop, and the forced exciting loop is made up of resistance II that is arranged in parallel and electric capacity VI.
In the negative half period rectification circuit, diode I is arranged in parallel resistance-capacitance circuit, and above-mentioned resistance-capacitance circuit is made up of capacitor I II that is connected in series and resistance III.
In positive half cycle rectification circuit, the anode of diode I connects current-limiting resistance.
Above-mentioned discharge capacity and relay normally open contact III are connected in series, discharge capacity be connected in parallel with contactor again after relay normally open contact III connects.
Above-mentioned discharge capacity, relay normally open contact III also are in series with resistance VI.
The above-mentioned bridge rectifier decompression capacitor that is connected in series, decompression capacitor and resistance IV are connected in parallel.
Adopt the utility model of technique scheme; be applicable to universal circuit breaker; A.C. contactor is with exchanging 50HZ; the 60HZ rated operational voltage; 380V; 660V; connect in the electric power system of 1140V and the branch deenergizing; because of the thunderbolt; instantaneous short circuit reclosing electric power system generation instantaneous loss of pressure; keep universal circuit breaker; contactor is not threaded off; and operation is connected; disjunction and routine operation are connected; disjunction is in full accord; do not change original main line; when accident interruption surpasses the slow-break timing; universal circuit breaker; contactor is threaded off; reach and escape voltage flash-stopping and keep continuous production not shut down; need not restart the purpose of control system; thereby fundamentally solved the shutdown that " sudden strain of a muscle stops " causes; the stopping production phenomenon has improved operating efficiency greatly.
For this reason, the utility model has passed through test, and its concrete condition is as described below:
One, experimental condition:
1, height above sea level is no more than 1000m;
2, ambient temperature is not higher than 85 ℃ and be not less than-30 ℃;
3, the environment of no explosion hazard;
The place that 4, rain and snow is arranged.
Two, experimental technique parameter:
1, electrical strength: should bear the experimental voltage that exchanges 50HZ, 2000V, last 1min, do not have to puncture or flash and resemble;
2, insulation resistance: in ambient temperature is that 25 ± 5 ℃ and relative humidity are in the environment of 50-75%, and the insulation resistance of device should be not less than 10M Ω;
3, device, starts rapidly in the voltage fluctuation 75-110% scope at its input voltage alternating current 220V, 50HZ, and adhesive is reliable, the energy operate as normal;
4, Zhuan Zhi output voltage is looked the application difference, is 3-12V (direct current);
5, Zhuan Zhi output current is looked the application difference, is 30-550mA (direct current);
6, Zhuan Zhi the function that delays is looked the application difference, is 1S, 2S, 3S.
Three, test method:
1, the execution of GB998 regulation is pressed in the electrical strength test;
2, insulation resistance test is pressed the execution of GB998 regulation;
3, device is at the lower limit of scope range of the fluctuation of voltage, promptly during 165V, starts 3 times, starts rapidly, and adhesive is reliable, the energy operate as normal;
Device is in the upper limit of scope range of the fluctuation of voltage, promptly during 242V, starts 3 times, starts rapidly, and adhesive is reliable, can operate as normal;
4, Zhuan Zhi output voltage is measured with digital multimeter;
5, Zhuan Zhi output current is measured with digital multimeter;
6, Zhuan Zhi the function that delays is measured with stopwatch.
Four, test effect:
1, sucting speed is fast, and is strong and powerful, adhesive, neat and tidy, non-jitter when discharging, closing time is less than 100MS, and opening time has been avoided when fluctuation or decompression appear in electrical network less than 30MS, the arcing melting welding that contact shake causes has reduced the contact wearing and tearing, has prolonged contact useful life.
2, universal circuit breaker, contactor operate in the electrical network appearance sudden strain of a muscle stopping time, can keep delaying, and at using different objects, can delay time 1s, 2s, 3s discharge, and need not restart control system after sudden strain of a muscle stops.
3, contactor economizes on electricity more than 95%, and cost is low, and dependable performance is durable in use.
4, the under-voltage coil voltage of universal circuit breaker, ac contactor coil voltage is looked different objects and is operated between the direct current 3-12V.
5, the under-voltage coil current of universal circuit breaker, the ac contactor coil electric current is looked different objects and is operated between the direct current 30-550mA.
6, the under-voltage coil of universal circuit breaker, the ac contactor coil operating temperature has prolonged useful life near normal temperature.
7, device always has 4 lines, and wiring is simple, and is easy for installation.
8, volume is little, and is in light weight.
9, the non-angular requirement is installed.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model is provided with relay normally-closed contact ZJ on the neutral line that exchanges three-phase circuit
1, relay normally-closed contact ZJ
1Connect contactor CJ by rectification circuit, the other end of contactor CJ is connected to any phase that exchanges in the three-phase.With the utility model is example, contactor CJ be connected to A mutually in, in addition, also be in series with reset switch K at contactor CJ, this reset switch K is a single-pole double-throw switch (SPDT).And, contactor CJ and discharge capacity C
5Be connected in parallel discharge capacity C
5Also with relay normally open contact IIIZJ
3With resistance VIR
6Be connected in series discharge capacity C
5, relay normally open contact IIIZJ
3With resistance VIR
6After the series connection, be connected in parallel with contactor CJ again.
In addition, on the neutral line, also be provided with bridge rectifier.For implementing the utility model better, bridge rectifier is the capacitance decompression bridge rectifier, promptly original bridge rectifier decompression capacitor C that is connected in series
1, decompression capacitor C
1With resistance IVR
4Be connected in parallel.Then, the output of bridge rectifier connects relay ZL, relay ZL and storage capacitor C
4Be connected in parallel storage capacitor C
4With relay normally open contact IIZL
2Series connection is provided with.It is pointed out that relay ZL action after contactor CJ, so, the normally closed electric shock ZJ of relay
1With relay normally open contact IIIZJ
3All move after contactor CJ.
Above-mentioned rectification circuit comprises positive half cycle rectification circuit and negative half period rectification circuit.Wherein, positive half cycle rectification circuit comprises diode I D
2And and diode I D
2The diode I ID that is in series
3, and, diode I D
2Anode connect current-limiting resistance R
1Diode I ID
3Negative electrode connect the forced exciting loop, the forced exciting loop is by the resistance II R that is arranged in parallel
2With electric capacity VIC
6Form.
Above-mentioned negative half period rectification circuit comprises the diode I D that is arranged in parallel with contactor CJ
1, diode ID
1Negative electrode connect diode I D
2Negative electrode and diode I ID
3The common port of anode.Simultaneously, diode I D
1Be arranged in parallel resistance-capacitance circuit, above-mentioned resistance-capacitance circuit is by the capacitor I IIC that is connected in series
3With resistance IIIR
3Form.
As shown in Figure 1, operation principle of the present utility model is:
Start button QA, voltage at positive half cycle through relay normally-closed contact ZJ
1, current-limiting resistance R
1, diode I D
2, diode I ID
3, resistance II R
2And electric capacity VIC
6Carry out halfwave rectifier, to contactor CJ power supply, normally closed contact TA, the BH of comprehensive protector of motor and contactor CJ form the loop in primary circuit.When the voltage negative half cycle, through contactor CJ, diode I D
1, diode I ID
3, resistance IIR
2To contactor CJ afterflow, normally closed contact TA, the BH of comprehensive protector of motor makes contactor CJ keep adhesive in contactor CJ and primary circuit.
In order to reduce starting current, so at discharge capacity C
5Serial connection relay normally open contact ZJ in the loop
3, because of relay ZJ moves after contactor CJ action, so dodge stopping time, discharge capacity C at power supply
5To contactor CJ discharge, make contactor CJ keep normal adhesive.Simultaneously because discharge capacity C
5Electric current excessive, be restriction discharge capacity C
5Electric current, prevent relay normally open contact ZJ
3The time melt in work sticking, so discharge capacity C
5Also with resistance VIR
6Be in series.Need to prove current-limiting resistance R
1Be the current-limiting resistance that contactor CJ starts, diode I D
1Be the negative half period rectifier diode.Resistance II R
2, electric capacity VIC
6Form the forced exciting loop, the start-up time of accelerating contactor CJ.And resistance IIIR
3, capacitor I IIC
3Form resistance-capacitance circuit, protection diode I D
1Capacitor I I C
2Be decompression capacitor, it is connected in parallel on relay normally-closed contact ZJ
1, current-limiting resistance R
1With diode I D
2On, and discharge resistance R
5With capacitor I I C
2Be arranged in parallel.
After contactor CJ starts end, relay normally-closed contact ZJ
1Disconnect, positive half cycle is by capacitor I I C
2Step-down is through diode I ID
3Rectification is through resistance IIR
2, normally closed contact TA, BH, the button QA of comprehensive protector of motor makes contactor CJ keep adhesive among the contactor CJ, primary circuit, negative half period is the same.Wherein, discharge resistance R
5Be capacitor I I C after contactor CJ quits work
2Discharge resistance.
In addition, decompression capacitor C
1, diode D4 forms the capacitance decompression bridge rectifier, gives relay ZJ power supply, resistance IVR
4Be decompression capacitor C
1Discharge resistance.Because of capacitance decompression rectifier power source stability slower, so at storage capacitor C
4Add relay normally open contact ZJ before
2, make storage capacitor C after the relay ZJ adhesive
4The ability energy storage, otherwise relay ZJ is slow in one's movements, can not meet design requirement.Dodge stopping time storage capacitor C at electrical network
4Make it to keep adhesive, choose reasonable decompression capacitor C to relay ZJ discharge
1, can make relay ZJ arrive operate as normal between 110% alternating voltage of US at 75% of supply voltage US, need not increase voltage stabilizing circuit, can make relay ZJ action simultaneously after contactor CJ, could guarantee whole device operate as normal like this.
In Fig. 1, be original circuit in the empty frame, K is the reset switch of device and original circuit, when actual installation, they are same single pole multiple throw.When reset switch K is closed, the utlity model has and delay function; And when reset switch K and the disconnection of slow-break device, the utility model does not have the function of delaying.
Claims (8)
1. the slow-break device of a universal circuit breaker/contactor is characterized in that: on the neutral line that exchanges three-phase circuit relay normally-closed contact (ZJ is set
1), relay normally-closed contact (ZJ
1) connecting contactor (CJ) by rectification circuit, the other end of contactor (CJ) is connected to any phase that exchanges in the three-phase, described contactor (CJ) and discharge capacity (C
5) be connected in parallel; Also be provided with bridge rectifier on the described neutral line, the output of bridge rectifier connects relay (ZL), relay (ZL) and storage capacitor (C
4) be connected in parallel storage capacitor (C
4) and relay normally open contact II (ZL
2) the series connection setting.
2. the slow-break device of universal circuit breaker/contactor according to claim 1, it is characterized in that: described rectification circuit comprises positive half cycle rectification circuit and negative half period rectification circuit; Described positive half cycle rectification circuit comprises diode I (D
2) and and diode I (D
2) the diode I I (D that is in series
3); Described negative half period rectification circuit comprises the diode I (D that is arranged in parallel with contactor (CJ)
1), diode I (D
1) negative electrode connect diode I (D
2) negative electrode and diode I I (D
3) common port of anode.
3. the slow-break device of universal circuit breaker/contactor according to claim 2 is characterized in that: described diode I I (D
3) negative electrode connect the forced exciting loop, the forced exciting loop is by the resistance II (R that is arranged in parallel
2) and electric capacity VI (C
6) form.
4. the slow-break device of universal circuit breaker/contactor according to claim 2 is characterized in that: in the negative half period rectification circuit, and diode I (D
1) being arranged in parallel resistance-capacitance circuit, described resistance-capacitance circuit is by the capacitor I II (C that is connected in series
3) and resistance III (R
3) form.
5. the slow-break device of universal circuit breaker/contactor according to claim 2 is characterized in that: in positive half cycle rectification circuit, and diode I (D
2) anode connect current-limiting resistance (R
1).
6. the slow-break device of universal circuit breaker/contactor according to claim 1 is characterized in that: described discharge capacity (C
5) and relay normally open contact III (ZJ
3) be connected in series discharge capacity (C
5) and relay normally open contact III (ZJ
3) be connected in parallel with contactor (CJ) again after the series connection.
7. the slow-break device of universal circuit breaker/contactor according to claim 1 is characterized in that: described discharge capacity (C
5), relay normally open contact III (ZJ
3) also with resistance VI (R
6) be in series.
8. the slow-break device of universal circuit breaker/contactor according to claim 1 is characterized in that: the described bridge rectifier decompression capacitor (C that is connected in series
1), decompression capacitor (C
1) and resistance IV (R
4) be connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200926989U CN201465912U (en) | 2009-08-28 | 2009-08-28 | Slow-break device of universal circuit breaker/contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200926989U CN201465912U (en) | 2009-08-28 | 2009-08-28 | Slow-break device of universal circuit breaker/contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201465912U true CN201465912U (en) | 2010-05-12 |
Family
ID=42393260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200926989U Expired - Fee Related CN201465912U (en) | 2009-08-28 | 2009-08-28 | Slow-break device of universal circuit breaker/contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201465912U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249095A (en) * | 2016-08-01 | 2016-12-21 | 华通机电股份有限公司 | Miniature circuit breaker leakage-current alarm is not threaded off control circuit |
-
2009
- 2009-08-28 CN CN2009200926989U patent/CN201465912U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249095A (en) * | 2016-08-01 | 2016-12-21 | 华通机电股份有限公司 | Miniature circuit breaker leakage-current alarm is not threaded off control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103337867B (en) | A kind of low-voltage load is in Linear Phasing Device and phase modulation method thereof | |
| CN103647458B (en) | Frequency conversion system and carry out the method and apparatus of precharge to the high voltage converter in it | |
| CN204231257U (en) | A kind of oil pumper frequency-changing control system | |
| CN203813439U (en) | Automatic voltage regulator of distribution line | |
| CN203340017U (en) | Frequency control system for large-power brushless double-feed motor | |
| CN201937539U (en) | Star-delta automatic switching device for motor | |
| CN202326141U (en) | Water pump control cabinet | |
| CN202159979U (en) | Intelligent reactive power adjustment and compensation device | |
| CN201465912U (en) | Slow-break device of universal circuit breaker/contactor | |
| CN203553882U (en) | Transformer low-voltage tripping automatic reclosing device | |
| CN110896247A (en) | Automatic control system of bus coupler switch | |
| CN110752664A (en) | Dual-power-supply fast switching device | |
| CN106849031B (en) | A kind of alternating current-direct current mixing micro-capacitance sensor coordinating protection fitting method | |
| CN112865180B (en) | Flexible grid-connected auxiliary device of power transformer | |
| CN209860601U (en) | Low-voltage reactive compensation fee control device | |
| CN202721440U (en) | Zero loss current device deeply restricting short trouble | |
| CN202474823U (en) | Integrated protection device for electromotor | |
| CN101330264A (en) | Soft starter for middle-high voltage solid motor | |
| CN207896642U (en) | A kind of overcurrent relay protection trip circuit after station DC supply interruption | |
| CN202363869U (en) | Control device of outdoor high-voltage alternating-current vacuum circuit breaker | |
| CN202084985U (en) | Self-startup power supply apparatus | |
| CN201904601U (en) | Multifunctional three-phase circuit breaker | |
| CN106451753B (en) | On-line DC power supply device for ship | |
| CN209088842U (en) | Fire pump reactive compensation starter | |
| CN110380649A (en) | A kind of energy-saving soft start cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20120828 |