CN104362578B - Can reclosing RCCB - Google Patents

Can reclosing RCCB Download PDF

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Publication number
CN104362578B
CN104362578B CN201410639650.0A CN201410639650A CN104362578B CN 104362578 B CN104362578 B CN 104362578B CN 201410639650 A CN201410639650 A CN 201410639650A CN 104362578 B CN104362578 B CN 104362578B
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China
Prior art keywords
rccb
motor
reclosing
operating mechanism
node
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CN201410639650.0A
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Chinese (zh)
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CN104362578A (en
Inventor
史祺
李津莲
高辉
王卫东
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Tianjin Baili Electronic Co Ltd
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Tianjin Baili Electronic Co Ltd
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Abstract

The present invention relates to it is a kind of can reclosing RCCB.It includes electronic type plastic casing type RCCB and motor-operating mechanism and reclosing controller with warning function;RCCB is respectively connected to electric power system mains side enter line side, the connection of RCCB load-side and load-side electrical equipment, distribution or electric power system mains side C, N phase are connected with reclosing controller circuit.RCCB is monitored to the leak current fault in circuit, after RCCB cuts off current supply circuit, transmit electric leakage action failure signal to the node of reclosing circuit one, after the electric leakage action node state time delay of reclosing circuit judges RCCB, motor-operating mechanism is driven closed a floodgate after breaker is detained again.Solve because RCCB produces misoperation or the unexpected protection act of contingency, because its installation site from safeguard or operating personnel too far, it is impossible to timely close circuit breaker restores electricity, and causes that the time wastes and the operation of delay equipment causes the problem of unnecessary loss.

Description

Can reclosing RCCB
Technical field
The invention belongs to a kind of RCCB, more particularly to it is a kind of can reclosing RCCB.
Background technology
Currently known plastic casing type RCCB by master switch and branch switch used as being made in power distribution circuit With.When circuit occurs electric leakage accident, breaker mechanism disconnects current supply circuit according to judgment mechanism drive mechanism, protects electricity consumption Equipment or personal safety, close a floodgate after needing manually to be detained RCCB again after line fault exclusion, connect current supply circuit For equipment is powered, because RCCB generally uses installation environment and its protection object, it is caused easily to produce misoperation or idol The right unexpected protection act of property, because its installation site from safeguard or operating personnel too far, causing can not close circuit breaker recovery in time Power supply, to causing time waste and the operation of delay equipment to cause unnecessary loss.
The content of the invention
The present invention is to solve present in known technology close circuit breaker to restore electricity technical problem and provide in time It is a kind of can reclosing RCCB.
The present invention is adopted the technical scheme that to solve technical problem present in known technology:It includes electronic type Special motor-operating mechanism is installed on plastic casing type RCCB (CBR) body;Distribution or electric power system mains side A, B, C, N phase are respectively connected to A, B, C, N phase that described electronic type plastic casing type RCCB (CBR) enters line side, described A, B, C, N phase of electronic type plastic casing type RCCB (CBR) load-side are connected with A, B, C, N of load-side electrical equipment Connect;Described motor-operating mechanism includes the inductance inside series-wound motor (D), brake solenoid (r), motor-operating mechanism (L) 1,2, No. 3 terminals and inside described motor-operating mechanism, described distribution or electric power system mains side C, N phase and weight Power transformer (T) input connection inside switching-on controller circuit;Distribution or electric power system mains side C phases described in simultaneously Common node with first and second relay (K1, K2) contact node is connected;Described distribution or electric power system mains side N phases with No. 1 terminal inside described motor-operating mechanism, one end of series-wound motor (D), one end connection of brake solenoid (r); Power transformer (T) output end connection rectifier bridge (D1) input inside described reclosing controller circuit, described is whole Stream bridge (D1) forward direction output end connection the first electric capacity (C1) anode, 1 pin input end of power supply chip (U1);Reclosing controller The first electric capacity (C1) negative terminal described in another output end connection of rectifier bridge (D1) described in circuit inside, described power supply chip (U1) 2 pin earth terminals, the emitter stage of first and second triode (Q1, Q2) inside reclosing circuit, the 9 of single-chip microcomputer (U2) Pin, the 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 described in the 3 pin output ends connection of described power supply chip (U1) (C2) 10 pins of anode and described single-chip microcomputer (U2), described first and second relay (K1, K2) pull-in winding just connects Enter to hold, one end of first resistor (R1), and as reclosing controller circuit VCC power supplys;Described the first relay (K1) is touched No. 2 terminals, one end of the normally closed node of switch (S1) inside motor-operating mechanism described in the normally opened node connection of point;It is described The second relay (K2) contact the described motor-operating mechanism of normally opened node connection inside No. 3 terminals, described switch (S1) one end of normally opened node;The normally closed node of described switch (S1) and the other end of normally opened node are jointly and electric operating machine One end of inductance (L) inside structure, the other end of described brake solenoid (r) is connected;Inside described motor-operating mechanism The other end of described inductance (L) be connected with the other end of described series-wound motor (D);Described the first triode (Q1) Base stage be connected with one end of 3rd resistor (R3), the colelctor electrode and the first described relay of described the first triode (Q1) (K1) other end connection of pull-in winding, the base stage of described the second triode (Q2) is connected with one end of the 4th resistance (R4); The colelctor electrode of described the second triode (Q2) is connected with the other end of described the second relay (K2) pull-in winding;Described 1 pin of single-chip microcomputer (U2) is connected with the other end of the 4th described resistance (R4), 3 pins of described single-chip microcomputer (U2) and institute The other end connection of the 3rd resistor (R3) stated, described electronic leakage low-voltage circuit breaker electronic trip unit trip status node (RJ) the other end is connected with 5 pins of described single-chip microcomputer (U2), the other end of described first resistor (R1).
The present invention has the advantages and positive effects that:Due to being, by moulded case circuit breaker motor-operating mechanism, to carry Electronic type plastic casing type RCCB and reclosing controller of warning function etc. are constituted;As electronic type plastic casing type RCCB is monitored to the leak current fault in circuit, after finding leak current fault occur, the leakage of electronic type plastic casing type Electrical circuit breakers electrical apparatus release makes cut-out current supply circuit according to the differentiation mechanism of itself, when electronic type plastic casing type leakage, breaking After device cut-out current supply circuit, electronic type plastic casing type RCCB electronic trip unit will be conveyed to one section of reclosing circuit Point signal transmission electric leakage action failure signal, reclosing circuit is by judging the electric leakage of electronic type plastic casing type RCCB Action node state, by the way that after prefabricated delay time, reclosing circuit drives motor-operating mechanism closed after breaker is detained again Lock.So as to solve because RCCB produce misoperation or the unexpected protection act of contingency, because its installation site from safeguard or Operating personnel are too far, it is impossible to which timely close circuit breaker restores electricity, and cause time waste and the operation of delay equipment to cause unnecessary The problem of loss.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the invention.
Specific embodiment
For present disclosure, feature and effect can be further appreciated that, following examples are hereby enumerated, and coordinate accompanying drawing detailed It is described as follows:
As shown in figure 1, installing special motor-operating mechanism on electronic type plastic casing type RCCB CBR bodies; Distribution or electric power system mains side A, B, C, N phase be respectively connected to electronic type plastic casing type RCCB CBR enter line side A, B, C, N phase, A, B, C, N phase of electronic type plastic casing type RCCB CBR load-sides and the A of load-side electrical equipment, B, C, N are connected;Power transformer T inputs inside distribution or electric power system mains side C, N phase and reclosing controller circuit Connection;Distribution or electric power system mains side C phases are connected with the common node of relay K1, K2 contact node simultaneously;Distribution or confession No. 1 terminal inside electric system mains side N phases and motor-operating mechanism, one end of series-wound motor D, the one of brake solenoid r End connection;Power transformer T output ends connection rectifier bridge D1 inputs inside reclosing controller circuit, rectifier bridge D1 is positive Output end connects electric capacity C1 anodes, 1 pin input end of power supply chip U1;Rectifier bridge D1 is another for reclosing controller circuit inside Output end connects electric capacity C1 negative terminals, the 2 pin earth terminals of power supply chip U1, the hair of triode Q1, Q2 inside reclosing circuit Emitter-base bandgap grading, 9 pins of single-chip microcomputer U2, electric capacity C2 negative terminals, electronic leakage low-voltage circuit breaker electronic trip unit trip status node R J One end, mutually and as reclosing controller circuit reference ground;Power supply chip U1 3 pin output ends connection electric capacity C2 anodes with And 10 pins of single-chip microcomputer U2, the positive incoming end of relay K1, K2 pull-in winding, one end of resistance R1, mutually and as reclosing Controller circuitry VCC power supplys;No. 2 terminals, switch S1 inside the normally opened node connection motor-operating mechanism of relay K1 contacts Normally closed node one end;Relay K2 contacts normally opened node connection motor-operating mechanism inside No. 3 terminals, switch S1 it is normal Open one end of node;Switch S1 normally closed node and the normally opened other end jointly with motor-operating mechanism inside inductance L one End, the other end connection of brake solenoid r;The other end of the inductance L inside motor-operating mechanism is another with series-wound motor D End connection;The base stage of triode Q1 is connected with one end of resistance R3, colelctor electrode and the relay K1 pull-in windings of triode Q1 The other end is connected, and the base stage of triode Q2 is connected with one end of resistance R4;The colelctor electrode of triode Q2 and relay K2 adhesive lines The other end connection of circle;1 pin of single-chip microcomputer U2 is connected with the other end of resistance R4, and 3 pins of single-chip microcomputer U2 are with resistance R3's The other end is connected, the other end of electronic leakage low-voltage circuit breaker electronic trip unit trip status node R J and the 5 of single-chip microcomputer U2 The other end connection of pin, resistance R1;The electric leakage action alarm node R J's of electronic type plastic casing type RCCB is another End is connected to ground.
The course of work of the invention is:
When upper electricity initially normally runs, by manually being operated breaker closing, period breaker is in its breaker Normal operating conditions, its electronic type plastic casing type RCCB motor-operating mechanism does not work, electronic type plastic casing type The electronic trip unit trip status node of RCCB is off-state, without leakage-current alarm state, equipment live normal work, Reclosing controller does not occur by the electronic trip unit trip status nodal test of electronic type plastic casing type RCCB Electric leakage is acted;Reclosing controller disconnects motor-operating mechanism power supply, motor-operating mechanism not operation circuit device;
When supply line or load-side break down, if short circuit, overload, disconnected phase, power-off electronic type plastic casing Magnetic thermal trip inside formula RCCB will be protected accordingly, but because not being that leak current fault leakage tripping device will be motionless Make, its electronic trip unit trip status node state will be remained off, at this moment reclosing controller is because being not detected by electric leakage Action, so disconnecting motor-operating mechanism power supply, motor-operating mechanism not detained again by operation circuit device, and closes open circuit Device, it is ensured that the safety of maintenance or operating personnel during being repaired or being overhauled;
When supply line or load-side break down, if leak current fault electronic type plastic casing type RCCB Internal electric leakage electronic trip unit will carry out corresponding protection act, because being the action of leak current fault leakage tripping device, its electric leakage electricity Sub- electrical apparatus release trip status node state will be changed into on-position from off-state, and at this moment reclosing controller is because detecting electric leakage Action node state signal is changed into conducting from disconnecting, so reclosing circuit device will turn on motor-operating mechanism power supply, electronic behaviour Making mechanism's operation circuit device carries out reclosing process;
After reclosing controller detects breaker earth leakage protective threads off, and breaker is in open position, overlaps Brake controller will be threaded off after reclosing process:Controller judges current reclosing and reclosing interval time last time first Whether it is that the repetition that interval was less than in 1 minute is closed a floodgate, if thinking to be continuous weight less than 1 minute with reclosing interval time last time Close a floodgate, then its coincidence number of times not should be greater than 3 times, more than reclosing will be stopped, it is desirable to which operation or attendant carry out failure inspection Look into;And judge reclosing;If do not occurred more than three continuous reclosing actions, reclosing controller will control to connect electronic behaviour Make mechanism power, breaker is carried out sub-switching operation by control motor-operating mechanism first, and breaker is completed using separating brake action Journey is snapped through again, then performs closed action.

Claims (1)

1. it is a kind of can reclosing RCCB, it is included on electronic type plastic casing type RCCB (CBR) body Special motor-operating mechanism is installed;Distribution or electric power system mains side A, B, C, N phase are respectively connected to described electronic type plastics Shell type RCCB (CBR) enters A, B, C, N phase of line side, described electronic type plastic casing type RCCB (CBR) A, B, C, N phase of load-side are connected with A, B, C, N of load-side electrical equipment;Described motor-operating mechanism includes series excitation Inside motor (D), brake solenoid (r), motor-operating mechanism inside inductance (L) and described motor-operating mechanism 1, 2nd, No. 3 terminals, it is characterized in that:Electricity inside described distribution or electric power system mains side C, N phase and reclosing controller circuit Source transformer (T) input is connected;Distribution or electric power system mains side C phases and first and second relay (K1, K2) described in simultaneously The common node connection of contact node;Inside described distribution or electric power system mains side N phases and described motor-operating mechanism No. 1 terminal, one end of series-wound motor (D), brake solenoid (r) one end connection;Described reclosing controller circuit Internal power transformer (T) output end connection rectifier bridge (D1) input, described rectifier bridge (D1) forward direction output end connection First electric capacity (C1) anode, 1 pin input end of power supply chip (U1);Rectifier bridge described in reclosing controller circuit inside (D1) described the first electric capacity (C1) negative terminal of another output end connection, 2 pin earth terminals of described power supply chip (U1), overlaps The emitter stage of first and second triode (Q1, Q2) inside lock circuit, 9 pins of single-chip microcomputer (U2), the second electric capacity (C2) negative terminal, One end of electronic leakage low-voltage circuit breaker electronic trip unit trip status node (RJ), and join as reclosing controller circuit Examine ground;The second electric capacity (C2) anode and described monolithic described in the 3 pin output ends connection of described power supply chip (U1) 10 pins of machine (U2), the positive incoming end of described first and second relay (K1, K2) pull-in winding, the one of first resistor (R1) End, and as reclosing controller circuit VCC power supplys;Described in the normally opened node connection of described the first relay (K1) contact No. 2 terminals, one end of the normally closed node of switch (S1) inside motor-operating mechanism;Described the second relay (K2) contact No. 3 terminals, one end of described switch (S1) normally opened node inside the described motor-operating mechanism of normally opened node connection;It is described Switch (S1) normally closed node and normally opened node the other end jointly with motor-operating mechanism inside inductance (L) one end, The other end connection of described brake solenoid (r);The other end of the described inductance (L) inside described motor-operating mechanism The other end with described series-wound motor (D) is connected;The base stage of described the first triode (Q1) and 3rd resistor (R3) One end connects, and the described colelctor electrode of the first triode (Q1) connects with the other end of described the first relay (K1) pull-in winding Connect, the base stage of described the second triode (Q2) is connected with one end of the 4th resistance (R4);Described the second triode (Q2) Colelctor electrode is connected with the other end of described the second relay (K2) pull-in winding;1 pin of described single-chip microcomputer (U2) and institute The other end connection of the 4th resistance (R4) stated, 3 pins of described single-chip microcomputer (U2) are another with described 3rd resistor (R3) One end connects, the other end of described electronic leakage low-voltage circuit breaker electronic trip unit trip status node (RJ) with it is described The other end connection of 5 pins of single-chip microcomputer (U2), described first resistor (R1).
CN201410639650.0A 2014-11-13 2014-11-13 Can reclosing RCCB Active CN104362578B (en)

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Application Number Priority Date Filing Date Title
CN201410639650.0A CN104362578B (en) 2014-11-13 2014-11-13 Can reclosing RCCB

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CN104362578B true CN104362578B (en) 2017-07-07

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Publication number Priority date Publication date Assignee Title
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10248156A (en) * 1997-03-04 1998-09-14 Toshiba Corp Circuit breaker with leak alarm

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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