CN104393578A - Circuit breaker closing control circuit - Google Patents
Circuit breaker closing control circuit Download PDFInfo
- Publication number
- CN104393578A CN104393578A CN201410692342.4A CN201410692342A CN104393578A CN 104393578 A CN104393578 A CN 104393578A CN 201410692342 A CN201410692342 A CN 201410692342A CN 104393578 A CN104393578 A CN 104393578A
- Authority
- CN
- China
- Prior art keywords
- pin
- bidirectional thyristor
- voltage
- charging capacitor
- circuit
- 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.)
- Pending
Links
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a circuit breaker closing control circuit. An anode terminal of a rectifying diode is connected with a positive electrode of a power source; a cathode terminal of the rectifying diode is respectively connected with one ends of a voltage stabilizing pipe and a charging capacitor; the other end of the voltage stabilizing pipe is connected with a negative electrode of the power source; the other end of the charging capacitor is connected with the negative electrode of the power source through a first resistor; a second pin and a sixth pin of a 555 time base electric integrated circuit are connected with a connecting point of the charging capacitor and the first resistor; a third pin of the 555 time base electrical integrated circuit is connected with a trigger end of a bidirectional thyristor; one end of the bidirectional thyristor is connected with the positive electrode of the power source; the other end of the bidirectional thyristor is connected with a rectifying bridge; two output ends of the rectifying bridge are respectively connected with two ends of a closing coil. The circuit breaker closing control circuit controls the circuit breaker closing coil to be electrified and avoids burning of the closing coil due to combination of a manual mode and an automatic mode.
Description
Technical field
The present invention relates to a kind of breaker closing control circuit.
Background technology
Dw15 type air circuit by automatic trip, protects low voltage power distribution network, power consumption equipment and personal safety to reach when short circuit or overload.Again combined floodgate power transmission must be carried out under the prerequisite checked and process fault.DW15 type circuit breaker also can trip because of decompression because of when power failure, electricity in high-pressure system or upper level electric power system, but after upper level supply network restores electricity again, circuit breaker also needs to close a floodgate.
Circuit breaker is after upper level supply network restores electricity after tripping; circuit breaker automatically closes a floodgate; such combined floodgate circuit embodies the automation of high level; but, transformer station after grid switching operation and circuit breaker emergency stop valve trip through often there will be the anomaly of breaker closing coil, closing contactor coil burnout.If automatically do not closed a floodgate through checking, easily cause burning of closing contactor coil more serious.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of breaker closing control circuit.The present invention manually with the combination of automated manner, control breaker closing coil and obtain electric, avoid burning of closing coil.
Technical scheme of the present invention is as follows:
Breaker closing control circuit, comprise rectifier diode, voltage-stabiliser tube, charging capacitor, base electricity integrated circuit when three or five, bidirectional thyristor, rectifier bridge and closing coil, the anode tap of described rectifier diode is connected with positive source, the cathode terminal of rectifier diode is connected with one end of voltage-stabiliser tube and charging capacitor respectively, the other end of voltage-stabiliser tube connects power cathode, the other end of described charging capacitor connects power cathode by the first resistance, when described 35, base electricity the second pin of integrated circuit and the 6th pin are all connected to the node place of charging capacitor and the first resistance, when three or five, the 3rd pin of base electricity integrated circuit is connected with the trigger end of bidirectional thyristor, one end of bidirectional thyristor is connected with positive source, the other end of bidirectional thyristor is connected with rectifier bridge, two outputs of rectifier bridge are connected with the two ends of closing coil respectively.
Also comprise filter capacitor, these filter capacitor two ends are parallel to the two ends of voltage-stabiliser tube.
Have employed such scheme, the course of work of the present invention is: push button switch, and alternating current, by after resistance step-down, through rectifies, filter capacitor filtering, voltage-stabiliser tube voltage stabilizing, provides required operating voltage to three or five time-base integrated circuits.Owing to starting the moment that switches on power, electric capacity do not have voltage, like this, second pin and the 6th pin of three or five time-base integrated circuits are low level, 3rd pin of three or five time-base integrated circuits exports high level, bidirectional thyristor triggering and conducting, making electromagnet coil obtains electric adhesive, along with electric capacity is by the charging of the first resistance, second pin and the 6th pin level of three or five time-base integrated circuits increase, when voltage reaches 2/3rds voltage stabilizing value of voltage-stabiliser tube, 3rd pin output low level of three or five time-base integrated circuits, bidirectional thyristor is closed, closing coil dead electricity discharges, thus the break-make of circuit breaker is controlled.The present invention manually starts combined floodgate circuit, avoid burning of closing coil.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
See Fig. 1, breaker closing control circuit of the present invention, comprise rectifier diode VD, voltage-stabiliser tube VS, charging capacitor C2, three or five time base electricity integrated circuit A, bidirectional thyristor V, rectifier bridge VC and closing coil Y.The anode tap of described rectifier diode VD is connected with positive source, and the anode tap of rectifier diode VD is connected with positive source by resistance R.The cathode terminal of rectifier diode VD is connected with one end of voltage-stabiliser tube VS and charging capacitor C2 respectively, the other end of voltage-stabiliser tube VS connects power cathode, the other end of described charging capacitor C2 connects power cathode by the first resistance R1, when described 35, second pin of base electricity integrated circuit A and the 6th pin are all connected to the node place of charging capacitor C2 and the first resistance R1, when three or five, the 3rd pin of base electricity integrated circuit A is connected with the trigger end of bidirectional thyristor V, one end of bidirectional thyristor V is connected with positive source, the other end of bidirectional thyristor V is connected with rectifier bridge VC, two outputs of rectifier bridge are connected with the two ends of closing coil YR respectively.Also comprise filter capacitor C1, the two ends of this filter capacitor C1 are parallel to the two ends of voltage-stabiliser tube VS.Described first resistance R1 is connected with power cathode by diode VD1, resistance R3 and push-button switch SB1.A two ends diode VD2 in parallel of closing coil YR.
The course of work of the present invention is: push button switch S B1, and alternating current, by after resistance R step-down, through rectifier diode VD rectification, filter capacitor C1 filtering, voltage-stabiliser tube VS voltage stabilizing, provides required operating voltage to three or five time-base integrated circuit A.Owing to starting the moment that switches on power, electric capacity C2 do not have voltage, like this, second pin and the 6th pin of three or five time-base integrated circuit A are low level, 3rd pin of three or five time-base integrated circuit A exports high level, bidirectional thyristor V triggering and conducting, making electromagnet coil YR obtains electric adhesive, along with electric capacity C2 is by the charging of the first resistance R1, second pin and the 6th pin level of three or five time-base integrated circuit A increase, when voltage reaches 2/3rds voltage stabilizing value of voltage-stabiliser tube, the 3rd pin output low level of three or five time-base integrated circuit A, bidirectional thyristor V closes, closing coil dead electricity discharges, thus the break-make of circuit breaker is controlled.
Claims (2)
1. breaker closing control circuit, it is characterized in that: comprise rectifier diode (VD), voltage-stabiliser tube (VS), charging capacitor (C2), base electricity integrated circuit (A) when three or five, bidirectional thyristor (V), rectifier bridge (VC) and closing coil (YR), the anode tap of described rectifier diode (VD) is connected with positive source, the cathode terminal of rectifier diode (VD) is connected with one end of voltage-stabiliser tube (VS) and charging capacitor (C2) respectively, the other end of voltage-stabiliser tube (VS) connects power cathode, the other end of described charging capacitor (C2) connects power cathode by the first resistance (R1), when described 35, the second pin of base electricity integrated circuit (A) and the 6th pin are all connected to the node place of charging capacitor (C2) and the first resistance (R1), when three or five, the 3rd pin of base electricity integrated circuit (A) is connected with the trigger end of bidirectional thyristor (V), one end of bidirectional thyristor (V) is connected with positive source, the other end of bidirectional thyristor (V) is connected with rectifier bridge (VC), two outputs of rectifier bridge are connected with the two ends of closing coil (YR) respectively.
2. breaker closing control circuit according to claim 1, is characterized in that: also comprise filter capacitor (C1), and the two ends of this filter capacitor (C1) are parallel to the two ends of voltage-stabiliser tube (VS).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692342.4A CN104393578A (en) | 2014-11-25 | 2014-11-25 | Circuit breaker closing control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692342.4A CN104393578A (en) | 2014-11-25 | 2014-11-25 | Circuit breaker closing control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104393578A true CN104393578A (en) | 2015-03-04 |
Family
ID=52611433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410692342.4A Pending CN104393578A (en) | 2014-11-25 | 2014-11-25 | Circuit breaker closing control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104393578A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798083A (en) * | 2019-12-02 | 2020-02-14 | 中国美术学院 | 555 phase control soft start current limiting protection direct current stabilized power supply |
-
2014
- 2014-11-25 CN CN201410692342.4A patent/CN104393578A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798083A (en) * | 2019-12-02 | 2020-02-14 | 中国美术学院 | 555 phase control soft start current limiting protection direct current stabilized power supply |
| CN110798083B (en) * | 2019-12-02 | 2020-12-25 | 中国美术学院 | 555 phase control soft start current limiting protection direct current stabilized power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104953696B (en) | Line interaction uninterruptible power supply | |
| CN105958437B (en) | Realize the control circuit of breaker decompression tripping in external circuit | |
| CN107800117B (en) | Input overvoltage protection circuit with power-on surge current suppression function | |
| CN108781075A (en) | DC voltage switchs | |
| CN203734545U (en) | Power supply device with output over-current protection, short-circuit protection, and automatic recovery functions | |
| CN103457472A (en) | Switching power supply and lamp applying same | |
| WO2015154558A1 (en) | Transient interruption trigger device for alternating-current power source | |
| CN104393578A (en) | Circuit breaker closing control circuit | |
| CN107658970B (en) | Relay protection circuit for fire-fighting equipment power supply | |
| CN104953537A (en) | Overload protection switching device | |
| CN102255277A (en) | Leakage detection protection circuit | |
| CN204314645U (en) | A kind of low-voltage distribution system by screen break-make automaton | |
| CN203368136U (en) | AC/DC power supply non-delay switching system | |
| CN210957789U (en) | CT prevents module of opening a way | |
| CN201985508U (en) | Zero line break protector and connecting structure thereof | |
| CN106711956A (en) | Over-voltage and under-voltage protective circuit | |
| CN203387397U (en) | Soft starting circuit structure of large-power photovoltaic inverter auxiliary power supply | |
| CN104730482A (en) | Portable high-pressure charged display testing device | |
| CN205037497U (en) | Safe long -life air condition compressor control circuit | |
| CN104570900B (en) | Water heater electric voltage protection circuit and water heater | |
| CN104600673A (en) | Under-voltage protection circuit and lamp | |
| CN203984378U (en) | The calling protection device of household electrical appliance | |
| CN202009372U (en) | Intelligent memory switch | |
| CN102158210B (en) | Intelligent memory switch | |
| CN109546618B (en) | Leakage protection circuit with power-on automatic reset and power-off automatic trip functions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150304 |
|
| WD01 | Invention patent application deemed withdrawn after publication |