CN104362578A - Re-close residual-current circuit breaker - Google Patents
Re-close residual-current circuit breaker Download PDFInfo
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- CN104362578A CN104362578A CN201410639650.0A CN201410639650A CN104362578A CN 104362578 A CN104362578 A CN 104362578A CN 201410639650 A CN201410639650 A CN 201410639650A CN 104362578 A CN104362578 A CN 104362578A
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- circuit breaker
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Abstract
The invention relates to a re-close residual-current circuit breaker which comprises an electronic residual-current circuit breaker body with a plastic shell and an alarming function, an electric operation mechanism and a re-close controller. A power side of a power distribution or power supply system is respectively connected with a line ingoing side of the residual-current circuit breaker body and the connection of a load side of the residual-current circuit breaker body and an electric device on the load side. The phase C and the phase N on the power side of the power distribution or power supply system is connected with a circuit of the re-close controller. The residual-current circuit breaker body monitors electricity leakage faults in the circuit, when the residual-current circuit breaker body cuts off a power supply circuit, a residual-current operation fault signal is transmitted to a node of a re-close circuit, and the re-close circuit drives the electric operation mechanism to carry out swinging-on operations after judging that a residual-current operation node state of the residual-current circuit breaker body is delayed. The problems that false operations or accidental abrupt protection operations are generated by the residual-current circuit breaker, the installation position is excessively away from maintenance or operation staff, the circuit breaker cannot be switched on in time to recover power supply, time is wasted, equipment is delayed and unnecessary loss is caused are solved.
Description
Technical field
The invention belongs to a kind of residual current circuit breaker, particularly relate to a kind of can the residual current circuit breaker of reclosing.
Background technology
Current known plastic casing formula residual current circuit breaker as in power distribution circuit by master switch and branch switch.When circuit generation electric leakage accident, current supply circuit disconnects according to judgment mechanism driving mechanism by breaker mechanism, protection power consumption equipment or personal safety, need manually residual current circuit breaker to be detained rear combined floodgate again after line fault is got rid of, connecting current supply circuit is that equipment is powered, because residual current circuit breaker generally uses installation environment and object of protection thereof, it is caused very easily to produce misoperation or the unexpected protection act of contingency, because of its installation site from maintenance or operating personnel excessively away from, cause and can not close circuit breaker restore electricity in time, unnecessary loss is caused to causing time waste and delay equipment to run.
Summary of the invention
The present invention for solve in known technology exist can not in time close circuit breaker restore electricity technical problem and provide a kind of can the residual current circuit breaker of reclosing.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is: it includes on electronic type plastics shell type residual current circuit breaker (CBR) body and installs special motor-operating mechanism; Distribution or electric power system mains side A, B, C, N phase access A, B, C, N phase of described electronic type plastics shell type residual current circuit breaker (CBR) inlet wire side respectively, and A, B, C, N phase of described electronic type plastics shell type residual current circuit breaker (CBR) load-side is connected with A, B, C, N of load-side power consumption equipment; Described motor-operating mechanism includes series-wound motor (D), brake solenoid (r), the inductance (L) of motor-operating mechanism inside and 1,2, No. 3 terminal of described motor-operating mechanism inside, and described distribution or electric power system mains side C, N phase are connected with power transformer (T) input of reclosing controller inside circuit; Distribution simultaneously or electric power system mains side C phase are connected with the common node of first and second relay (K1, K2) contact node; No. 1 terminal of described distribution or electric power system mains side N phase and described motor-operating mechanism inside, one end of series-wound motor (D), one end of brake solenoid (r) connects; Power transformer (T) output of described reclosing controller inside circuit connects rectifier bridge (D1) input, described rectifier bridge (D1) forward output connects the first electric capacity (C1) anode, 1 pin input end of power supply chip (U1); The first electric capacity (C1) negative terminal described in rectifier bridge (D1) another output described in reclosing controller inside circuit connects, 2 pin earth terminals of described power supply chip (U1), the emitter of first and second triode (Q1, Q2) of described reclosing inside circuit, 9 pins of single-chip microcomputer (U2), second electric capacity (C2) negative terminal, one end of electronic leakage low-voltage circuit breaker electronic trip unit trip status node (RJ), and as reclosing controller circuit reference ground; The second electric capacity (C2) anode described in 3 pin outputs connections of described power supply chip (U1) and 10 pins of described single-chip microcomputer (U2), the positive incoming end of described first and second relay (K1, K2) pull-in winding, one end of first resistance (R1), and as reclosing controller circuit VCC power supply; Described the first relay (K1) contact often open node connect described in No. 2 terminals of motor-operating mechanism inside, the normally closed node of switch (S1) one end; One end of node often opened by No. 3 terminals often opening the motor-operating mechanism inside described in node connection of described the second relay (K2) contact, described switch (S1); The common one end with the inductance (L) of motor-operating mechanism inside of the normally closed node of described switch (S1) and the other end of Chang Kai node, the other end connection of described brake solenoid (r); The other end of the described inductance (L) of described motor-operating mechanism inside is connected with the other end of described series-wound motor (D); The base stage of described the first triode (Q1) is connected with one end of the 3rd resistance (R3), the collector electrode of described the first triode (Q1) is connected with the other end of described the first relay (K1) pull-in winding, and the base stage of described the second triode (Q2) is connected with one end of the 4th resistance (R4); The collector electrode of described the second triode (Q2) is connected with the other end of described the second relay (K2) pull-in winding; 1 pin of described single-chip microcomputer (U2) is connected with the other end of the 4th described resistance (R4), 3 pins of described single-chip microcomputer (U2) are connected with the other end of the 3rd described resistance (R3), and the other end of described electronic leakage low-voltage circuit breaker electronic trip unit trip status node (RJ) is connected with the other end of 5 pins of described single-chip microcomputer (U2), described the first resistance (R1).
The advantage that the present invention has and good effect are: owing to being by moulded case circuit breaker motor-operating mechanism, with the composition such as electronic type plastics shell type residual current circuit breaker and reclosing controller of warning function, as electronic type plastics shell type residual current circuit breaker, the leak current fault in circuit is monitored, after there is leak current fault in discovery, electronic type plastics shell type residual current circuit breaker release is according to the differentiation mechanism of self, make cut-out current supply circuit, after electronic type plastics shell type residual current circuit breaker cuts off current supply circuit, electronic type plastics shell type residual current circuit breaker electronic trip unit will be transferred to reclosing circuit node signal transmission electric leakage action failure signal, reclosing circuit is by judging the electric leakage action node state of electronic type plastics shell type residual current circuit breaker, after prefabricated delay time, reclosing drives motor-operating mechanism carries out circuit breaker and detains rear combined floodgate again.Thus solve because residual current circuit breaker produces misoperation or the unexpected protection act of contingency; because of its installation site from maintenance or operating personnel excessively away from; close circuit breaker can not restore electricity in time, cause time waste and delay equipment to run the problem causing unnecessary loss.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
For content of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
As shown in Figure 1, electronic type plastics shell type residual current circuit breaker CBR body installs special motor-operating mechanism; Distribution or electric power system mains side A, B, C, N phase access A, B, C, N phase of electronic type plastics shell type residual current circuit breaker CBR inlet wire side respectively, and A, B, C, N phase of electronic type plastics shell type residual current circuit breaker CBR load-side is connected with A, B, C, N of load-side power consumption equipment; Distribution or electric power system mains side C, N phase are connected with the power transformer T input of reclosing controller inside circuit; Distribution or electric power system mains side C phase are connected with the common node of relay K 1, K2 contact node simultaneously; No. 1 terminal of distribution or electric power system mains side N phase and motor-operating mechanism inside, one end of series-wound motor D, one end of brake solenoid r connects; The power transformer T output of reclosing controller inside circuit connects rectifier bridge D1 input, and rectifier bridge D1 forward output connects electric capacity C1 anode, 1 pin input end of power supply chip U1; Another output of reclosing controller inside circuit rectifier bridge D1 connects electric capacity C1 negative terminal, the 2 pin earth terminals of power supply chip U1, the emitter of triode Q1, Q2 of reclosing inside circuit, 9 pins of single-chip microcomputer U2, electric capacity C2 negative terminal, one end of electronic leakage low-voltage circuit breaker electronic trip unit trip status node R J, mutually and as reclosing controller circuit reference ground; The 3 pin outputs of power supply chip U1 connect 10 pins of electric capacity C2 anodes and single-chip microcomputer U2, the positive incoming end of relay K 1, K2 pull-in winding, one end of resistance R1, mutually and as reclosing controller circuit VCC power supply; One end of often opening node connection No. 2 terminals of motor-operating mechanism inside, the normally closed node of switch S 1 of relay K 1 contact; No. 3 terminals often opening node connection motor-operating mechanism inside of relay K 2 contact, switch S 1 often open one end of node; The common one end with the inductance L of motor-operating mechanism inside of the normally closed node of switch S 1 and the other end of Chang Kai, the other end connection of brake solenoid r; The other end of the inductance L of motor-operating mechanism inside is connected with the other end of series-wound motor D; The base stage of triode Q1 is connected with one end of resistance R3, and the collector electrode of triode Q1 is connected with the other end of relay K 1 pull-in winding, and the base stage of triode Q2 is connected with one end of resistance R4; The collector electrode of triode Q2 is connected with the other end of relay K 2 pull-in winding; 1 pin of single-chip microcomputer U2 is connected with the other end of resistance R4,3 pins of single-chip microcomputer U2 are connected with the other end of resistance R3, and the other end of electronic leakage low-voltage circuit breaker electronic trip unit trip status node R J is connected with 5 pins of single-chip microcomputer U2, the other end of resistance R1; The other end of the electric leakage action warning node R J of electronic type plastics shell type residual current circuit breaker is connected to ground.
The course of work of the present invention is:
Power on when initially normally running, its circuit breaker is by manually carrying out operating breaker closing, period, circuit breaker was in normal operating conditions, its electronic type plastics shell type residual current circuit breaker motor-operating mechanism does not work, the electronic trip unit trip status node of electronic type plastics shell type residual current circuit breaker is off state, without leakage-current alarm state, equipment live normally works, and reclosing controller does not occur electric leakage action by the electronic trip unit trip status nodal test of electronic type plastics shell type residual current circuit breaker; Reclosing controller disconnects motor-operating mechanism power supply, motor-operating mechanism inoperation circuit device;
When supply line or load-side break down, if short circuit, overload, disconnected phase, the magnetic thermal overload release of power-off electric minor plastic casing formula residual current circuit breaker inside will be protected accordingly, but because not being that leak current fault leakage tripping device will be failure to actuate, its electronic trip unit trip status node state will remain open state, at this moment reclosing controller is not because electric leakage action being detected, so disconnect motor-operating mechanism power supply, motor-operating mechanism inoperation circuit device is detained again, and close circuit breaker, ensure to safeguard or operating personnel in the safety of carrying out keeping in repair or between turn(a)round,
When supply line or load-side break down, if the electric leakage electronic trip unit of leak current fault electronic type plastics shell type residual current circuit breaker inside will carry out corresponding protection act, cause is the action of leak current fault leakage tripping device, its electric leakage electronic trip unit trip status node state will become on-position from off-state, at this moment reclosing controller is because detecting that electric leakage action node state signal becomes conducting from disconnection, so reclosing circuit device will connect motor-operating mechanism power supply, motor-operating mechanism function circuit device will carry out reclosing process;
After reclosing controller detects that circuit breaker earth leakage protective is threaded off, and circuit breaker is in open position, reclosing controller is by the reclosing process after threading off: first controller judges that whether current reclosing and reclosing interval time last time be that interval is less than repeating in 1 minute and closes a floodgate, if being less than 1 minute interval time with reclosing last time thinks for continuous reclosing, so its coincidence number of times should not be greater than 3 times, be greater than and will stop reclosing, require that operation or attendant carry out trouble shooting; And judge reclosing; If do not occur being greater than three continuous reclosing actions, control is connected motor-operating mechanism power supply by reclosing controller, control motor-operating mechanism and first circuit breaker is carried out sub-switching operation, utilize separating brake action that circuit breaker is completed and detain process again, then perform closed action.
Claims (1)
1. can the residual current circuit breaker of reclosing, it includes on electronic type plastics shell type residual current circuit breaker (CBR) body and installs special motor-operating mechanism; Distribution or electric power system mains side A, B, C, N phase access A, B, C, N phase of described electronic type plastics shell type residual current circuit breaker (CBR) inlet wire side respectively, and A, B, C, N phase of described electronic type plastics shell type residual current circuit breaker (CBR) load-side is connected with A, B, C, N of load-side power consumption equipment; Described motor-operating mechanism includes series-wound motor (D), brake solenoid (r), the inductance (L) of motor-operating mechanism inside and 1,2, No. 3 terminal of described motor-operating mechanism inside, it is characterized in that: described distribution or electric power system mains side C, N phase are connected with power transformer (T) input of reclosing controller inside circuit; Distribution simultaneously or electric power system mains side C phase are connected with the common node of first and second relay (K1, K2) contact node; No. 1 terminal of described distribution or electric power system mains side N phase and described motor-operating mechanism inside, one end of series-wound motor (D), one end of brake solenoid (r) connects; Power transformer (T) output of described reclosing controller inside circuit connects rectifier bridge (D1) input, described rectifier bridge (D1) forward output connects the first electric capacity (C1) anode, 1 pin input end of power supply chip (U1); The first electric capacity (C1) negative terminal described in rectifier bridge (D1) another output described in reclosing controller inside circuit connects, 2 pin earth terminals of described power supply chip (U1), the emitter of first and second triode (Q1, Q2) of described reclosing inside circuit, 9 pins of single-chip microcomputer (U2), second electric capacity (C2) negative terminal, one end of electronic leakage low-voltage circuit breaker electronic trip unit trip status node (RJ), and as reclosing controller circuit reference ground; The second electric capacity (C2) anode described in 3 pin outputs connections of described power supply chip (U1) and 10 pins of described single-chip microcomputer (U2), the positive incoming end of described first and second relay (K1, K2) pull-in winding, one end of first resistance (R1), and as reclosing controller circuit VCC power supply; Described the first relay (K1) contact often open node connect described in No. 2 terminals of motor-operating mechanism inside, the normally closed node of switch (S1) one end; One end of node often opened by No. 3 terminals often opening the motor-operating mechanism inside described in node connection of described the second relay (K2) contact, described switch (S1); The common one end with the inductance (L) of motor-operating mechanism inside of the normally closed node of described switch (S1) and the other end of Chang Kai node, the other end connection of described brake solenoid (r); The other end of the described inductance (L) of described motor-operating mechanism inside is connected with the other end of described series-wound motor (D); The base stage of described the first triode (Q1) is connected with one end of the 3rd resistance (R3), the collector electrode of described the first triode (Q1) is connected with the other end of described the first relay (K1) pull-in winding, and the base stage of described the second triode (Q2) is connected with one end of the 4th resistance (R4); The collector electrode of described the second triode (Q2) is connected with the other end of described the second relay (K2) pull-in winding; 1 pin of described single-chip microcomputer (U2) is connected with the other end of the 4th described resistance (R4), 3 pins of described single-chip microcomputer (U2) are connected with the other end of the 3rd described resistance (R3), and the other end of described electronic leakage low-voltage circuit breaker electronic trip unit trip status node (RJ) is connected with the other end of 5 pins of described single-chip microcomputer (U2), described the first resistance (R1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410639650.0A CN104362578B (en) | 2014-11-13 | 2014-11-13 | Can reclosing RCCB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410639650.0A CN104362578B (en) | 2014-11-13 | 2014-11-13 | Can reclosing RCCB |
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| Publication Number | Publication Date |
|---|---|
| CN104362578A true CN104362578A (en) | 2015-02-18 |
| CN104362578B CN104362578B (en) | 2017-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410639650.0A Active CN104362578B (en) | 2014-11-13 | 2014-11-13 | Can reclosing RCCB |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749983A (en) * | 2015-04-13 | 2015-07-01 | 南车株洲电力机车有限公司 | Circuit and method for controlling vacuum circuit breaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10248156A (en) * | 1997-03-04 | 1998-09-14 | Toshiba Corp | Circuit breaker with leak alarm |
| CN201117594Y (en) * | 2007-11-27 | 2008-09-17 | 天津市百利电气有限公司 | Universal type circuit breaker possessing reclosing device |
| CN102487188A (en) * | 2010-12-03 | 2012-06-06 | 北京人民电器厂有限公司 | Resettable overvoltage and under-voltage protection switch |
-
2014
- 2014-11-13 CN CN201410639650.0A patent/CN104362578B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10248156A (en) * | 1997-03-04 | 1998-09-14 | Toshiba Corp | Circuit breaker with leak alarm |
| CN201117594Y (en) * | 2007-11-27 | 2008-09-17 | 天津市百利电气有限公司 | Universal type circuit breaker possessing reclosing device |
| CN102487188A (en) * | 2010-12-03 | 2012-06-06 | 北京人民电器厂有限公司 | Resettable overvoltage and under-voltage protection switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749983A (en) * | 2015-04-13 | 2015-07-01 | 南车株洲电力机车有限公司 | Circuit and method for controlling vacuum circuit breaker |
| CN104749983B (en) * | 2015-04-13 | 2017-08-18 | 南车株洲电力机车有限公司 | A kind of vacuum circuit breaker control circuit and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104362578B (en) | 2017-07-07 |
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