CN100429850C - Self-controlled circuit break protective circuit - Google Patents
Self-controlled circuit break protective circuit Download PDFInfo
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- CN100429850C CN100429850C CNB011455950A CN01145595A CN100429850C CN 100429850 C CN100429850 C CN 100429850C CN B011455950 A CNB011455950 A CN B011455950A CN 01145595 A CN01145595 A CN 01145595A CN 100429850 C CN100429850 C CN 100429850C
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Abstract
The present invention relates to a self-controlled breaking protection circuit used for protecting circuits and loads from switching off a main circuit due to open phases, undervoltage, overvoltage, overcurrent, electric leakage, etc., which comprises a power supply switching circuit and a QG control circuit, wherein a control power supply is switched to the output end of a switch contact of the main circuit from the input end of the switch contact of the main circuit by the power supply switching circuit. The protection circuit can have a reliable safety protection function to the main circuit and loads, especially motors, when the conditions of the open phases, the undervoltage, the overvoltage, the overcurrent, etc. happen, and is convenient to lead in various sensitive signals to carry out breaking control.
Description
Technical field
The present invention relates to a kind of protective circuit and load thereof disconnect main circuit because of phase shortage, under-voltage, overcurrent, electric leakage etc. self-controlled circuit break protective circuit that is used for.
Background technology
Existing main circuit open circuit protection, then defencive function is incomplete to adopt relay, adopts then cost height of electronic circuit, makes it be difficult for popularization and application.For example; " multi-functional electricity protection switch " (CN2273049Y); its signal source derives from transformer coupled rectification circuit and electric resistance partial pressure rectification circuit respectively; being one is the switching circuit of load with the tripping coil on the basis of the thyristor gating circuit of electric resistance partial pressure, has single phase poaer supply electric shock, electric leakage, overload, overvoltage, short-circuit protection function.
The purpose of this invention is to provide a kind of self-controlled circuit break protective circuit; when situations such as phase shortage, under-voltage, overvoltage, overcurrent take place in the main circuit running; can be to main circuit and load thereof; particularly motor plays the open circuit protection effect; and be convenient to introduce various sensitive signals and carry out open circuit protection, be that a kind of function is complete, structure is simpler and easy and be easy to the self-controlled circuit break protective circuit of popularization and application.
Summary of the invention
The object of the present invention is achieved like this: this self-controlled circuit break protective circuit comprises a control power supply switch circuit; the control power supply is switched to the patent " phase shortage, under-voltage, overvoltage breaking protection circuit " that the output of main circuit switch contact has been applied for referring to me from the input of main circuit switch contact; application number is 00128945.7; this self-controlled circuit break protective circuit comprises a self-controlled circuir break protective signal control circuit, is made of self-controlled circuir break protective signal output circuit " QGS " and switching circuit.
Self-controlled circuit break protective circuit of the present invention; owing in its circuit, be provided with A.C. contactor or circuit breaker and self-controlled circuir break protective signal control circuit; it in running the output that the control power supply is switched to the main circuit switch contact from the input of main circuit switch contact; during situations such as circuit phase shortage that causes when reasons such as the switch contact loose contact occur or voltage fluctuation cause that circuit is under-voltage, overvoltage and overload, electric leakage; can cut off the electricity supply and realize the main circuit break protecting; defencive function is complete; cost is low, is beneficial to popularization and application.
Summary of the invention is specific as follows:
A kind of self-controlled circuit break protective circuit is characterized in that:
This self-controlled circuit break protective circuit comprises a control power supply switch circuit, and it will control power supply and switch to the output of main circuit switch contact from the input of main circuit switch contact, by the opening and closing realization of control circuit breaker interlock contact (Hz);
This self-controlled circuit break protective circuit also comprises a self-controlled circuir break protective signal control circuit, and it is made of self-controlled circuir break protective signal output circuit (QGS) and switching circuit; The first auxilliary contact (H of circuit breaker interlock contact (Hz)
1) and the first resistance (R
1) after the series connection, the first resistance (R
1) be connected to the output of neutral line main contacts (HN); The described first auxilliary contact (H
1) input be connected the second auxilliary contact (H of circuit breaker interlock contact (Hz) with neutral line main contacts (HN) input
2) and the second resistance (R
2), after test button (SA) series connection, the described second auxilliary contact (H
2) input be connected to the input of phase line main contacts (HL), test button (SA) is connected to the output of phase line main contacts (HL); Diode (D
1) negative electrode be connected to an end of circuit breaker tripping coil (H), the other end of circuit breaker tripping coil (H) is connected to thyristor (D
2) anode, diode (D
1) anode be connected to the described second auxilliary contact (H
2) and the second resistance (R
2) the node place, thyristor (D
2) negative electrode be connected to the described first auxilliary contact (H
1) and the first resistance (R
1) node; The 1st of self-controlled circuir break protective signal output circuit (QGS) is terminated at the output of neutral line main contacts (HN), and the 2nd is terminated at the test button (SA) and the second resistance (R
2) the node place, self-controlled circuir break protective signal output (QG) is connected to thyristor (D
2) the control utmost point.
Perhaps take a kind of self-controlled circuit break protective circuit, this self-controlled circuit break protective circuit comprises a control power supply switch circuit, it will be controlled power supply and switch to the output of main circuit switch contact from the input of main circuit switch contact, and described switching realizes by the adhesive of A.C. contactor; The break contact (Xf) of A.C. contactor pull-in winding (S), relay (X), stop button (TA), movingly close that auxilliary contact (Sf), time-delay are moving closes auxilliary contact (Sf
1) after the series connection, A.C. contactor pull-in winding (S) is terminated at the neutral line, time-delay is moving closes auxilliary contact (Sf
1) be connected to the output of C phase line main contacts (Sc); Two make contact one ends of interlock button (QA) are connected to the moving auxilliary contact (Sf) and the moving auxilliary contact (Sf that closes that delays time of closing
1) the node place, the other end of two make contact is connected to the input of C phase line main contacts (Sc), the moving node that closes auxilliary contact (Sf) and stop button (TA) respectively.
This self-controlled circuit break protective circuit also comprises a self-controlled circuir break protective signal control circuit, and it is made of self-controlled circuir break protective signal output circuit (QGS) and switching circuit; First test button (the SA
1) be connected to the 3rd diode (D
1) anode, the second test button (SA
2) be connected to the 4th diode (D
2) anode, the 3rd diode (D
1) negative electrode and the 4th diode (D
2) negative electrode link to each other the first test button (SA
1) be connected to the output of B phase line main contacts (Sb), the second test button (SA
2) be connected to the output of A phase line main contacts (Sa); One of relay (X) is terminated at thyristor (D
3) anode, the other end and the 3rd diode (D
1) and the 4th diode (D
2) negative electrode link to each other thyristor (D
3) negative electrode be connected to the output of C phase line main contacts (Sc); The 1st of self-controlled circuir break protective signal output circuit (QGS) is terminated at the output of C phase line main contacts (Sc), and the 2nd is terminated at the first test button (SA
1) and the 3rd diode (D
1) node, the 3rd is terminated at the second test button (SA
2) and the 4th diode (D
2) node, self-controlled circuir break protective signal output (QG) is connected to thyristor (D
3) the control utmost point.
Moreover adopt following scheme: a kind of self-controlled circuit break protective circuit; this self-controlled circuit break protective circuit comprises a control power supply switch circuit; the control power supply is switched to the output of main circuit switch contact from the input of main circuit switch contact, and described switching realizes by the opening and closing of control circuit breaker interlock contact (Hz).
This self-controlled circuit break protective circuit also comprises a self-controlled circuir break protective signal control circuit, and it is made of self-controlled circuir break protective signal output circuit (QGS) and switching circuit; First test button (the SA
1) be connected to the 5th diode (D
1) anode, the second test button (SA
2) be connected to the 6th diode (D
2) anode, the 3rd test button (SA
3) be connected to the 7th diode (D
3) anode, then with the first test button (SA
1) be connected to the output of C phase line main contacts, the second test button (SA
2) be connected to the output of B phase line main contacts, the 3rd test button (SA
3) be connected to the output of A phase line main contacts, and the 5th diode (D
1), the 6th diode (D
2), the 7th diode (D
3) negative electrode connect together and constitute star and connect; Circuit breaker tripping coil (H) one is terminated at thyristor (D
4) anode constitute series connection after, the other end of circuit breaker tripping coil (H) is connected to cathode connection, thyristor (D
4) negative electrode be connected to the neutral line; The 1st of self-controlled circuir break protective signal output circuit (QGS) is terminated at the neutral line, and the 2nd is terminated at the first test button (SA
1) and the 5th diode (D
1) node, the 3rd is terminated at the second test button (SA
2) and the 6th diode (D
2) node, the 4th is terminated at the 3rd test button (SA
3) and the 7th diode (D
3) node, self-controlled circuir break protective signal output (QG) is connected to thyristor (D
4) the control utmost point.
Description of drawings
Fig. 1 realizes the circuit structure diagram of goal of the invention in the breaker protection mode that with the main contacts is the single-phase two-wire system AC power for self-controlled circuit break protective circuit of the present invention.
Fig. 2 realizes the circuit structure diagram of goal of the invention in the A.C. contactor protected mode that with the main contacts is the three-phase three-wire system AC power for self-controlled circuit break protective circuit of the present invention.
Fig. 3 realizes the circuit structure diagram of goal of the invention in the breaker protection mode that with the main contacts is the three-phase four-wire system AC power for self-controlled circuit break protective circuit of the present invention.
Fig. 4, Fig. 5 are the circuit structure diagrams of two-wire system self-controlled circuir break protective signal output circuit QGS among Fig. 1.
Fig. 6 is the circuit structure diagram of three-wire system self-controlled circuir break protective signal output circuit QGS among Fig. 2.
Fig. 7 is the circuit structure diagram of four-wire system self-controlled circuir break protective signal output circuit QGS among Fig. 3.
Embodiment
As shown in Figure 1, this self-controlled circuit break protective circuit comprises a control power supply switch circuit, and this control power supply switch circuit is realized controlling power supply switches to the main circuit switch contact from the input of main circuit switch contact output by the opening and closing of control circuit breaker interlock contact Hz; This self-controlled circuit break protective circuit also comprises a self-controlled circuir break protective signal control circuit, and this self-controlled circuir break protective signal control circuit comprises self-controlled circuir break protective signal output circuit QGS, switching circuit, the first auxilliary contact H of circuit breaker interlock contact Hz
1With first resistance R
1After the series connection, first resistance R
1Be connected to the output of neutral line main contacts HN; The described first auxilliary contact H
1Input be connected the second auxilliary contact H of circuit breaker interlock contact Hz with neutral line main contacts HN input
2Successively with second resistance R
2, after the test button SA series connection, the described second auxilliary contact H
2Input be connected to the input of phase line main contacts HL, test button SA is connected to the output of phase line main contacts HL; Diode D
1Negative electrode be connected to the end of circuit breaker tripping coil H, the other end of circuit breaker tripping coil H is connected to thyristor D
2Anode, diode D
1Anode be connected to the described second auxilliary contact H
2With second resistance R
2The node place, thyristor D
2Negative electrode be connected to the described first auxilliary contact H
1With first resistance R
1Node; The 1st of self-controlled circuir break protective signal output circuit QGS is terminated at the output of neutral line main contacts HN, and the 2nd is terminated at the test button SA and second resistance R
2The node place, self-controlled circuir break protective signal output QG is connected to thyristor D
2The control utmost point.
During startup, with external force close circuit breaker interlock contact Hz, its main contacts closure and starter motor D.At the motor D run duration, if under-voltage, overvoltage, overcurrent etc. occur, self-controlled circuir break protective signal output circuit QGS output self-controlled circuir break protective signal QG then, thyristor D
2Conducting, the circuit breaker tripping coil H adhesive of switching on makes button Ka Tuoka and deenergization, and motor D is out of service.At the motor D run duration, if the main contacts loose contact occurs, self-controlled circuir break protective signal output circuit QGS first resistance R of connecting then because of its 1st end or the 2nd end
1Or second resistance R
2Cause under-voltage and output self-controlled circuir break protective signal QG, circuit breaker tripping coil H switches on adhesive and cuts off the electricity supply.
As shown in Figure 2, this self-controlled circuit break protective circuit comprises a control power supply switch circuit, and it will control power supply and switch to the output of main circuit switch contact from the input of main circuit switch contact, and described switching is by the adhesive realization of A.C. contactor; The end of the pull-in winding S of A.C. contactor is connected the moving auxilliary contact Sf that closes that delays time with the break contact Xf of relay X, stop button TA, moving closing after auxilliary contact Sf connects successively
1An end, the A.C. contactor pull-in winding S other end is connected to the neutral line, time-delay is moving closes auxilliary contact Sf
1The other end be connected to the output of C phase line main contacts Sc; Two make contact one ends of interlock button QA are connected to the moving auxilliary contact Sf and the moving auxilliary contact Sf that closes that delays time of closing
1The node place, the other end of two make contact is connected to the input of C phase line main contacts Sc, the moving node that closes auxilliary contact Sf and stop button TA respectively; This self-controlled circuit break protective circuit also comprises a self-controlled circuir break protective signal control circuit, and this self-controlled circuir break protective signal control circuit comprises self-controlled circuir break protective signal output circuit QGS, switching circuit, the first test button SA
1One be terminated at the 3rd diode D
1Anode, the second test button SA
2One be terminated at the 4th diode D
2Anode, the 3rd diode D
1Negative electrode and the 4th diode D
2Negative electrode link to each other the first test button SA
1The other end be connected to the output of B phase line main contacts Sb, the second test button SA
2The other end be connected to the output of A phase line main contacts Sa; One of relay X is terminated at thyristor D
3Anode, the other end and the 3rd diode D
1With the 4th diode D
2Negative electrode link to each other thyristor D
3Negative electrode be connected to the output of C phase line main contacts Sc; The 1st of self-controlled circuir break protective signal output circuit QGS is terminated at the output of C phase line main contacts Sc, and the 2nd is terminated at the first test button SA
1With the 3rd diode D
1Tie point, the 3rd is terminated at the second test button SA
2With the 4th diode D
2Tie point, self-controlled circuir break protective signal output QG is connected to thyristor D
3The control utmost point.
During startup, press interlock button QA, the A.C. contactor A.C. contactor pull-in winding S adhesive of switch on, main contacts Sa, Sb, Sc and movingly close auxilliary contact Sf, moving the closing of time-delay assisted contact Sf
1All closed; Relieving interlock button QA, the make contact time-delay that is connected to the interlock button QA of C phase line main contacts Sc input disconnects and the moving auxilliary contact Sf that closes that delayed time before this disconnects
1Closure, A.C. contactor pull-in winding S keeps main contacts Sa, Sb, Sc closure by the output power supply of C phase line main contacts Sc, and motor D starts.At the motor D run duration, if main contacts loose contact and phase shortage or situation such as under-voltage occur, self-controlled circuir break protective signal output circuit QGS output self-controlled circuir break protective signal QG then, thyristor D
3Conducting, relay X adhesive, break contact Xf disconnects, A.C. contactor pull-in winding S decompression and deenergization, motor D is out of service.
As shown in Figure 3, this self-controlled circuit break protective circuit comprises a control power supply switch circuit, the control power supply is switched to the output of main circuit switch contact from the input of main circuit switch contact, and described switching realizes by the opening and closing of control circuit breaker interlock contact Hz; This self-controlled circuit break protective circuit also comprises a self-controlled circuir break protective signal control circuit, and this self-controlled circuir break protective signal control circuit comprises self-controlled circuir break protective signal output circuit QGS, switching circuit, the first test button SA
1One be terminated at the 5th diode D
1Anode, the second test button SA
2One be terminated at the 6th diode D
2Anode, the 3rd test button SA
3One be terminated at the 7th diode D
3Anode, then with the first test button SA
1The other end be connected to the output of C phase line main contacts, the second test button SA
2The other end be connected to the output of B phase line main contacts, the 3rd test button SA
3The other end be connected to the output of A phase line main contacts, and the 5th diode D
1, the 6th diode D
2, the 7th diode D
3Negative electrode connect together and constitute star and connect; Circuit breaker tripping coil H one is terminated at thyristor D
4Anode constitute series connection after, the other end of circuit breaker tripping coil H is connected to cathode connection, thyristor D
4Negative electrode be connected to the neutral line; The 1st of self-controlled circuir break protective signal output circuit QGS is terminated at the neutral line, and the 2nd is terminated at the first test button SA
1With the 5th diode D
1Node, the 3rd is terminated at the second test button SA
2With the 6th diode D
2Node, the 4th is terminated at the 3rd test button SA
3With the 7th diode D
3Node, self-controlled circuir break protective signal output QG is connected to thyristor D
4The control utmost point.
During startup, with external force close circuit breaker interlock contact Hz, its main contacts closure and starter motor D.At the motor D run duration, if main contacts loose contact and phase shortage or situation such as under-voltage occur, self-controlled circuir break protective signal output circuit QGS output self-controlled circuir break protective signal QG then, thyristor D
4Conducting, circuit breaker tripping coil H switches on adhesive and cuts off the electricity supply, and motor D is out of service.
Among Fig. 1, the circuit structure diagram of two-wire system self-controlled circuir break protective signal output circuit QGS such as Fig. 4, shown in Figure 5.
In Fig. 4, two-wire system self-controlled circuir break protective signal output circuit QGS is by the first diode D
11, the second diode D
12, first capacitor C
1, second capacitor C
2Connect into the voltage multiplying rectifier power supply, after the negative electrode of the first voltage stabilizing didoe Dq was connected to the end formation series connection of the 3rd resistance R q, the anode of the first voltage stabilizing didoe Dq was connected to described voltage multiplying rectifier power cathode, and the other end of the 3rd resistance R q is connected to the voltage multiplying rectifier positive source; After the anode of second voltage stabilizing didoe D ' q was connected to the end formation series connection of the 4th resistance R ' q, the negative electrode of second voltage stabilizing didoe D ' q was connected to the voltage multiplying rectifier positive source, and the other end of the 4th resistance R ' q is connected to the voltage multiplying rectifier power cathode; After the negative electrode of the 3rd voltage stabilizing didoe Dg was connected to the end formation series connection of the 5th resistance R g, the anode of the 3rd voltage stabilizing didoe Dg was connected to the voltage multiplying rectifier power cathode, and the other end of the 5th resistance R g is connected to the voltage multiplying rectifier positive source; The base stage of the first triode Vq is connected to the node of the first voltage stabilizing didoe Dq and the 3rd resistance R q, after emitter is connected to the anode formation series connection of the 8th diode Db, the negative electrode of the 8th diode Db is connected to the node of second voltage stabilizing didoe D ' q and the 4th resistance R ' q, and collector electrode is connected to the node of the 3rd voltage stabilizing didoe Dg and the 5th resistance R g; The base stage of the second triode QGv is connected to the node of the 3rd voltage stabilizing didoe Dg and the 5th resistance R g, emitter is connected to the voltage multiplying rectifier positive source, after collector electrode was connected to the end formation series connection of the 6th resistance QGr, the other end of the 6th resistance QGr was connected to the voltage multiplying rectifier power cathode.
The operation principle of Fig. 4 is: between atmospheric area, the first triode Vq, the second triode QGv end, no self-controlled circuir break protective signal QG output; Under-voltage condition, the node voltage of second voltage stabilizing didoe D ' q and the 4th resistance R ' q reduces, and the first triode Vq conducting causes that the base potential of the second triode QGv descends, the second triode QGv conducting and export self-controlled circuir break protective signal QG; Overvoltage condition, the first triode Vq ends, but the dividing potential drop of the 5th resistance R g causes the second triode QGv conducting and exports self-controlled circuir break protective signal QG.Self-controlled circuir break protective signal output circuit QGS adds external signals such as photosensitive, temperature-sensitive, overcurrent, electric leakage and causes the second triode QGv conducting, also can export self-controlled circuir break protective signal QG.
In Fig. 5, two-wire system self-controlled circuir break protective signal output circuit QGS is by the first diode D
11, the second diode D
12, first capacitor C
1, second capacitor C
2Connect into the voltage multiplying rectifier power supply, after the negative electrode of the first voltage stabilizing didoe Dq was connected to the end formation series connection of the 3rd resistance R q, the anode of the first voltage stabilizing didoe Dq was connected to described voltage multiplying rectifier power cathode, and the other end of the 3rd resistance R q is connected to the voltage multiplying rectifier positive source; After the anode of second voltage stabilizing didoe D ' q was connected to the end formation series connection of the 4th resistance R ' q, the negative electrode of second voltage stabilizing didoe D ' q was connected to the voltage multiplying rectifier positive source, and the other end of the 4th resistance R ' q is connected to the voltage multiplying rectifier power cathode; The emitter of the first triode Vq is connected to the node of the first voltage stabilizing didoe Dq and the 3rd resistance R q, after base stage is connected to the anode formation series connection of the 8th diode Db, the negative electrode of the 8th diode Db is connected to the node of second voltage stabilizing didoe D ' q and the 4th resistance R ' q, after the end of another termination the 7th resistance R vq that collector electrode is connected to an end, the 8th resistance R ' vq of the 8th resistance R ' vq constituted series connection, the other end of the 7th resistance R vq was connected to the voltage multiplying rectifier power cathode; After the negative electrode of the 9th diode Dvq was connected to the end formation series connection of the 9th resistance R z, the anode of the 9th diode Dvq was connected to the node of the 8th resistance R ' vq and the 7th resistance R vq, and the other end of the 9th resistance R z is connected to the voltage multiplying rectifier power cathode; The negative electrode of the 3rd voltage stabilizing didoe Dg is connected to the node of second voltage stabilizing didoe D ' q and the 4th resistance R ' q, and the anode of the 3rd voltage stabilizing didoe Dg is connected to the node of the 9th diode Dvq and the 9th resistance R z; The base stage of the 3rd triode QG ' v is connected to the node place of the 9th diode Dvq and the 9th resistance R z, and emitter is connected to the voltage multiplying rectifier power cathode, and collector electrode is connected to the base stage of the second triode QGv; The emitter of the second triode QGv is connected to the node of the first voltage stabilizing didoe Dq and the 3rd resistance R q, and after collector electrode was connected to the end formation series connection of the 6th resistance QGr, the other end of the 6th resistance QGr was connected to the voltage multiplying rectifier power cathode; The anode of the 4th voltage stabilizing didoe Dz is connected to the base stage of the 3rd triode QG ' v, and the negative electrode of the 4th voltage stabilizing didoe Dz is connected to the collector electrode of the second triode QGv; The tenth resistance R a one is terminated at the emitter of the first triode Vq, and the other end is connected to the base stage of the first triode Vq; After the end that the anode that the extraneous signal first of electric leakage transformer is terminated at negative electrode, the tenth diode Da of the tenth diode Da is connected to the first potentiometer Wa constitutes series connection, the other end of the first potentiometer Wa is connected to the base stage of the first triode Vq, and second of the extraneous signal of electric leakage transformer is terminated at the emitter of the first triode Vq; Capacitor C c one is terminated at the base stage of the 3rd triode QG ' v, and the other end is connected to the voltage multiplying rectifier power cathode; The extraneous signal first of crossing convertor transformer is terminated at the anode of the 11 diode Dc, after the negative electrode of the 11 diode Dc is connected to the end formation series connection of the second potentiometer Wc, the other end of the second potentiometer Wc is connected to the base stage of the 3rd triode QG ' v, and the extraneous signal second of crossing convertor transformer is terminated at the voltage multiplying rectifier power cathode.
The operation principle of Fig. 5 is: the first triode Vq, the 3rd triode QG ' v, the second triode QGv end between atmospheric area, no self-controlled circuir break protective signal QG output; Under-voltage condition, the node voltage of second voltage stabilizing didoe D ' q and the 4th resistance R ' q reduces, and the first triode Vq conducting also makes the 3rd triode QG ' v, the second triode QGv conducting and exports self-controlled circuir break protective signal QG through the 9th diode Dvq; Overvoltage condition, the first triode Vq ends, but the 3rd voltage stabilizing didoe Dg reverse breakdown causes the 3rd triode QG ' v, the second triode QGv conducting and exports self-controlled circuir break protective signal QG; Electric leakage signal amplifies by the first triode Vq, the 3rd triode QG ' v, the second triode QGv through the tenth diode Da rectification, the second triode QGv collector potential raises and makes voltage stabilizing didoe Dz reverse breakdown, voltage stabilizing didoe Dz reverse breakdown causes the 3rd triode QG ' v, the second triode QGv conducting and exports self-controlled circuir break protective signal QG, adjusts the first potentiometer Wa and can proofread and correct operating current value over the ground; Over-current signal causes the 3rd triode QG ' v, the second triode QGv conducting to export self-controlled circuir break protective signal QG through the 11 diode Dc rectification by the 3rd triode QG ' v, second triode QGv amplification and through voltage stabilizing didoe Dz feedback; over-current signal is given capacitor C c charging after the 11 diode Dc rectification, adjust the second potentiometer Wc and can change the maximum load current value.
Among Fig. 2, the circuit structure diagram of three-wire system self-controlled circuir break protective signal output circuit QGS as shown in Figure 6.
Fig. 6 is a three-wire system self-controlled circuir break protective signal output circuit structure chart, on the basis of the self-controlled circuir break protective signal output circuit QGS of single-phase two-wire system AC power shown in Figure 4, add the 12 diode D1, the negative electrode of the 12 diode D1 is connected to the node of the 5th resistance R g and the second triode QGv emitter, and the anode of the 12 diode D1 is connected to positive source; Add the 13 diode Dt, the anode of the 13 diode Dt is connected to the base stage of the second triode QGv, and the negative electrode of the 13 diode Dt is connected to positive source.Two two-wire system self-controlled circuir break protective signal output circuits that added the 12 diode D1, the 13 diode Dt are connected in parallel as three-wire system self-controlled circuir break protective signal output circuit QGS.
The operation principle of Fig. 6 is: the 1st end opens circuit, then because of the under-voltage self-controlled circuir break protective signal QG that exports; The 2nd end or the 3rd end open circuit, then the 13 diode Dt conducting and export self-controlled circuir break protective signal QG; Operation principle under-voltage, overvoltage is identical with Fig. 4.
Among Fig. 3, the circuit structure diagram of four-wire system self-controlled circuir break protective signal output circuit QGS as shown in Figure 7.
Fig. 7 is a four-wire system self-controlled circuir break protective signal output circuit structure chart, on the basis of the self-controlled circuir break protective signal output circuit QGS of single-phase two-wire system AC power shown in Figure 4, add the 12 diode D1, the negative electrode of the 12 diode D1 is connected to the node of the 5th resistance R g and the second triode QGv emitter, and the anode of the 12 diode D1 is connected to positive source; Add the 13 diode Dt, the anode of the 13 diode Dt is connected to the base stage of the second triode QGv, and the negative electrode of the 13 diode Dt is connected to positive source.Three two-wire system self-controlled circuir break protective signal output circuits that added the 12 diode D1, the 13 diode Dt are connected in parallel as four-wire system self-controlled circuir break protective signal output circuit QGS.
The operation principle of Fig. 7 is: the 2nd end or the 3rd end or the 4th end open circuit, then the 13 diode Dt conducting and export self-controlled circuir break protective signal QG; Operation principle under-voltage, overvoltage is identical with Fig. 4.
Claims (7)
1, a kind of self-controlled circuit break protective circuit is characterized in that:
This self-controlled circuit break protective circuit comprises a control power supply switch circuit, and this control power supply switch circuit is realized controlling power supply switches to the main circuit switch contact from the input of main circuit switch contact output by the opening and closing of control circuit breaker interlock contact (Hz);
This self-controlled circuit break protective circuit also comprises a self-controlled circuir break protective signal control circuit, and this self-controlled circuir break protective signal control circuit comprises self-controlled circuir break protective signal output circuit (QGS), switching circuit, the first auxilliary contact (H of circuit breaker interlock contact (Hz)
1) and the first resistance (R
1) after the series connection, the first resistance (R
1) be connected to the output of neutral line main contacts (HN); The described first auxilliary contact (H
1) input be connected the second auxilliary contact (H of circuit breaker interlock contact (Hz) with neutral line main contacts (HN) input
2) successively with the second resistance (R
2), after test button (SA) series connection, the described second auxilliary contact (H
2) input be connected to the input of phase line main contacts (HL), test button (SA) is connected to the output of phase line main contacts (HL); Diode (D
1) negative electrode be connected to an end of circuit breaker tripping coil (H), the other end of circuit breaker tripping coil (H) is connected to thyristor (D
2) anode, diode (D
1) anode be connected to the described second auxilliary contact (H
2) and the second resistance (R
2) the node place, thyristor (D
2) negative electrode be connected to the described first auxilliary contact (H
1) and the first resistance (R
1) node; The 1st of self-controlled circuir break protective signal output circuit (QGS) is terminated at the output of neutral line main contacts (HN), and the 2nd is terminated at the test button (SA) and the second resistance (R
2) the node place, self-controlled circuir break protective signal output (QG) is connected to thyristor (D
2) the control utmost point.
2, self-controlled circuit break protective circuit according to claim 1 is characterized in that; Described self-controlled circuir break protective signal output circuit (QGS) is the two-wire system self-controlled circuir break protective signal output circuit; This two-wire system self-controlled circuir break protective signal output circuit adopts voltage doubling rectifing circuit that ac supply signal is converted to dc power signal and corresponding AC power under-voltage value, overpressure value and exports circuir break protective signal; First diode (the D
11), the second diode (D
12), the first electric capacity (C
1), the second electric capacity (C
2) connect into the voltage multiplying rectifier power supply, after the negative electrode of first voltage stabilizing didoe (Dq) is connected to the end formation series connection of the 3rd resistance (Rq), the anode of first voltage stabilizing didoe (Dq) is connected to described voltage multiplying rectifier power cathode, and the other end of the 3rd resistance (Rq) is connected to the voltage multiplying rectifier positive source; (anode of D ' q) is connected to the 4th resistance, and (after the end of R ' q) constituted series connection, (negative electrode of D ' q) was connected to the voltage multiplying rectifier positive source to second voltage stabilizing didoe to second voltage stabilizing didoe, and (other end of R ' q) is connected to the voltage multiplying rectifier power cathode to the 4th resistance; After the negative electrode of the 3rd voltage stabilizing didoe (Dg) was connected to the end formation series connection of the 5th resistance (Rg), the anode of the 3rd voltage stabilizing didoe (Dg) was connected to the voltage multiplying rectifier power cathode, and the other end of the 5th resistance (Rg) is connected to the voltage multiplying rectifier positive source; The base stage of first triode (Vq) is connected to the node of first voltage stabilizing didoe (Dq) and the 3rd resistance (Rq), after emitter is connected to the anode formation series connection of the 8th diode (Db), the negative electrode of the 8th diode (Db) is connected to second voltage stabilizing didoe, and ((node of R ' q), collector electrode are connected to the node of the 3rd voltage stabilizing didoe (Dg) and the 5th resistance (Rg) for D ' q) and the 4th resistance; The base stage of second triode (QGv) is connected to the node of the 3rd voltage stabilizing didoe (Dg) and the 5th resistance (Rg), emitter is connected to the voltage multiplying rectifier positive source, after collector electrode was connected to the end formation series connection of the 6th resistance (QGr), the other end of the 6th resistance (QGr) was connected to the voltage multiplying rectifier power cathode.
3, self-controlled circuit break protective circuit according to claim 1 is characterized in that: described self-controlled circuir break protective signal output circuit (QGS) is the two-wire system self-controlled circuir break protective signal output circuit; This two-wire system self-controlled circuir break protective signal output circuit adopts voltage doubling rectifing circuit that ac supply signal is converted to dc power signal and corresponding AC power under-voltage value, overpressure value and exports circuir break protective signal, the first diode (D
11), the second diode (D
12), the first electric capacity (C
1), the second electric capacity (C
2) connect into the voltage multiplying rectifier power supply, after the negative electrode of first voltage stabilizing didoe (Dq) is connected to the end formation series connection of the 3rd resistance (Rq), the anode of first voltage stabilizing didoe (Dq) is connected to described voltage multiplying rectifier power cathode, and the other end of the 3rd resistance (Rq) is connected to the voltage multiplying rectifier positive source; (anode of D ' q) is connected to the 4th resistance, and (after the end of R ' q) constituted series connection, (negative electrode of D ' q) was connected to the voltage multiplying rectifier positive source to second voltage stabilizing didoe to second voltage stabilizing didoe, and (other end of R ' q) is connected to the voltage multiplying rectifier power cathode to the 4th resistance; The emitter of first triode (Vq) is connected to the node of first voltage stabilizing didoe (Dq) and the 3rd resistance (Rq), after base stage is connected to the anode formation series connection of the 8th diode (Db), the negative electrode of the 8th diode (Db) is connected to second voltage stabilizing didoe (D ' q) and the 4th resistance (node of R ' q), collector electrode is connected to the 8th resistance, and ((after an end of another termination the 7th resistance (Rvq) of R ' vq) constituted series connection, the other end of the 7th resistance (Rvq) was connected to the voltage multiplying rectifier power cathode for the end of R ' vq), the 8th resistance; After the negative electrode of the 9th diode (Dvq) is connected to the end formation series connection of the 9th resistance (Rz), the anode of the 9th diode (Dvq) be connected to the 8th resistance (node of R ' vq) and the 7th resistance (Rvq), the other end of the 9th resistance (Rz) is connected to the voltage multiplying rectifier power cathode; The negative electrode of the 3rd voltage stabilizing didoe (Dg) is connected to second voltage stabilizing didoe, and ((node of R ' q), the anode of the 3rd voltage stabilizing didoe (Dg) are connected to the node of the 9th diode (Dvq) and the 9th resistance (Rz) for D ' q) and the 4th resistance; (QG ' base stage v) is connected to the node place of the 9th diode (Dvq) and the 9th resistance (Rz) to the 3rd triode, and emitter is connected to the voltage multiplying rectifier power cathode, and collector electrode is connected to the base stage of second triode (QGv); The emitter of second triode (QGv) is connected to the node of first voltage stabilizing didoe (Dq) and the 3rd resistance (Rq), and after collector electrode was connected to the end formation series connection of the 6th resistance (QGr), the other end of the 6th resistance (QGr) was connected to the voltage multiplying rectifier power cathode; The anode of the 4th voltage stabilizing didoe (Dz) be connected to the 3rd triode (base stage of QG ' v), the negative electrode of the 4th voltage stabilizing didoe (Dz) is connected to the collector electrode of second triode (QGv); The tenth resistance (Ra) one is terminated at the emitter of first triode (Vq), and the other end is connected to the base stage of first triode (Vq); After the end that the anode that the extraneous signal first of electric leakage transformer is terminated at negative electrode, the tenth diode (Da) of the tenth diode (Da) is connected to first potentiometer (Wa) constitutes series connection, the other end of first potentiometer (Wa) is connected to the base stage of first triode (Vq), and second of the extraneous signal of electric leakage transformer is terminated at the emitter of first triode (Vq); Electric capacity (Cc) one be terminated at the 3rd triode (base stage of QG ' v), the other end is connected to the voltage multiplying rectifier power cathode; The extraneous signal first of crossing convertor transformer is terminated at the anode of the 11 diode (Dc), after the negative electrode of the 11 diode (Dc) is connected to the end formation series connection of second potentiometer (Wc), the other end of second potentiometer (Wc) is connected to the 3rd triode, and (base stage of QG ' v), the extraneous signal second of crossing convertor transformer is terminated at the voltage multiplying rectifier power cathode.
4, a kind of self-controlled circuit break protective circuit is characterized in that:
This self-controlled circuit break protective circuit comprises a control power supply switch circuit, and it will control power supply and switch to the output of main circuit switch contact from the input of main circuit switch contact, and described switching is by the adhesive realization of A.C. contactor; One end of the pull-in winding of A.C. contactor (S) is connected the moving auxilliary contact (Sf that closes that delays time with break contact (Xf), stop button (TA), moving the closing of relay (X) after connecting successively in auxilliary contact (Sf)
1) an end, A.C. contactor pull-in winding (S) other end is connected to the neutral line, time-delay is moving closes auxilliary contact (Sf
1) the other end be connected to the output of C phase line main contacts (Sc); Two make contact one ends of interlock button (QA) are connected to the moving auxilliary contact (Sf) and the moving auxilliary contact (Sf that closes that delays time of closing
1) the node place, the other end of two make contact is connected to the input of C phase line main contacts (Sc), the moving node that closes auxilliary contact (Sf) and stop button (TA) respectively;
This self-controlled circuit break protective circuit also comprises a self-controlled circuir break protective signal control circuit, and this self-controlled circuir break protective signal control circuit comprises self-controlled circuir break protective signal output circuit (QGS), switching circuit, the first test button (SA
1) one be terminated at the 3rd diode (D
1) anode, the second test button (SA
2) one be terminated at the 4th diode (D
2) anode, the 3rd diode (D
1) negative electrode and the 4th diode (D
2) negative electrode link to each other the first test button (SA
1) the other end be connected to the output of B phase line main contacts (Sb), the second test button (SA
2) the other end be connected to the output of A phase line main contacts (Sa); One of relay (X) is terminated at thyristor (D
3) anode, the other end and the 3rd diode (D
1) and the 4th diode (D
2) negative electrode link to each other thyristor (D
3) negative electrode be connected to the output of C phase line main contacts (Sc); The 1st of self-controlled circuir break protective signal output circuit (QGS) is terminated at the output of C phase line main contacts (Sc), and the 2nd is terminated at the first test button (SA
1) and the 3rd diode (D
1) tie point, the 3rd is terminated at the second test button (SA
2) and the 4th diode (D
2) tie point, self-controlled circuir break protective signal output (QG) is connected to thyristor (D
3) the control utmost point.
5, self-controlled circuit break protective circuit according to claim 4, it is characterized in that: described self-controlled circuir break protective signal output circuit (QGS) is the three-wire system self-controlled circuir break protective signal output circuit, corresponding AC power under-voltage value, overpressure value and export circuir break protective signal; This three-wire system self-controlled circuir break protective signal output circuit comprises voltage doubling rectifing circuit and two two-wire system self-controlled circuir break protective signal output circuits that are connected in parallel, and voltage doubling rectifing circuit is converted to dc power signal with ac supply signal, by the first diode (D
21), the second diode (D
22), the first electric capacity (C
1), the second electric capacity (C
2) connect into the voltage multiplying rectifier power supply; Described two-wire system self-controlled circuir break protective signal output circuit comprises following element: after the negative electrode of first voltage stabilizing didoe (Dq) is connected to the end formation series connection of the 3rd resistance (Rq), the anode of first voltage stabilizing didoe (Dq) is connected to described power cathode, and the other end of the 3rd resistance (Rq) is connected to described positive source; (anode of D ' q) is connected to the 4th resistance, and (after the end of R ' q) constituted series connection, (negative electrode of D ' q) was connected to positive source to second voltage stabilizing didoe to second voltage stabilizing didoe, and (other end of R ' q) is connected to power cathode to the 4th resistance; After the negative electrode of the 3rd voltage stabilizing didoe (Dg) was connected to the end formation series connection of the 5th resistance (Rg), the anode of the 3rd voltage stabilizing didoe (Dg) was connected to power cathode, and the other end of the 5th resistance (Rg) is connected to positive source; The base stage of first triode (Vq) is connected to the node of first voltage stabilizing didoe (Dq) and the 3rd resistance (Rq), after emitter is connected to the anode formation series connection of the 8th diode (Db), the negative electrode of the 8th diode (Db) is connected to second voltage stabilizing didoe, and ((node of R ' q), collector electrode are connected to the node of the 3rd voltage stabilizing didoe (Dg) and the 5th resistance (Rg) for D ' q) and the 4th resistance; The base stage of second triode (QGv) is connected to the node of the 3rd voltage stabilizing didoe (Dg) and the 5th resistance (Rg), emitter is connected to positive source, after collector electrode was connected to the end formation series connection of the 6th resistance (QGr), the other end of the 6th resistance (QGr) was connected to power cathode; The 12 diode (D
12), the 12 diode (D
12) negative electrode be connected to the node of the 5th resistance (Rg) and second triode (QGv) emitter, the 12 diode (D
12) anode be connected to positive source; The 13 diode (Dt), the anode of the 13 diode (Dt) is connected to the base stage of second triode (QGv), and the negative electrode of the 13 diode (Dt) is connected to positive source.
6, a kind of self-controlled circuit break protective circuit is characterized in that:
This self-controlled circuit break protective circuit comprises a control power supply switch circuit, and the control power supply is switched to the output of main circuit switch contact from the input of main circuit switch contact, and described switching realizes by the opening and closing of control circuit breaker interlock contact (Hz);
This self-controlled circuit break protective circuit also comprises a self-controlled circuir break protective signal control circuit, and this self-controlled circuir break protective signal control circuit comprises self-controlled circuir break protective signal output circuit (QGS), switching circuit, the first test button (SA
1) one be terminated at the 5th diode (D
1) anode, the second test button (SA
2) one be terminated at the 6th diode (D
2) anode, the 3rd test button (SA
3) one be terminated at the 7th diode (D
3) anode, then with the first test button (SA
1) the other end be connected to the output of C phase line main contacts, the second test button (SA
2) the other end be connected to the output of B phase line main contacts, the 3rd test button (SA
3) the other end be connected to the output of A phase line main contacts, and the 5th diode (D
1), the 6th diode (D
2), the 7th diode (D
3) negative electrode connect together and constitute star and connect; Circuit breaker tripping coil (H) one is terminated at thyristor (D
4) anode constitute series connection after, the other end of circuit breaker tripping coil (H) is connected to cathode connection, thyristor (D
4) negative electrode be connected to the neutral line; The 1st of self-controlled circuir break protective signal output circuit (QGS) is terminated at the neutral line, and the 2nd is terminated at the first test button (SA
1) and the 5th diode (D
1) node, the 3rd is terminated at the second test button (SA
2) and the 6th diode (D
2) node, the 4th is terminated at the 3rd test button (SA
3) and the 7th diode (D
3) node, self-controlled circuir break protective signal output (QG) is connected to thyristor (D
4) the control utmost point.
7, self-controlled circuit break protective circuit according to claim 6, it is characterized in that: described self-controlled circuir break protective signal output circuit (QGS) is the four-wire system self-controlled circuir break protective signal output circuit, corresponding AC power under-voltage value, overpressure value and export circuir break protective signal; This four-wire system self-controlled circuir break protective signal output circuit comprises voltage doubling rectifing circuit and three two-wire system self-controlled circuir break protective signal output circuits that are connected in parallel, and voltage doubling rectifing circuit is converted to dc power signal with ac supply signal, by the first diode (D
31), the second diode (D
32), the first electric capacity (C
1), the second electric capacity (C
2) connect into the voltage multiplying rectifier power supply; Described two-wire system self-controlled circuir break protective signal output circuit comprises following element: after the negative electrode of first voltage stabilizing didoe (Dq) is connected to the end formation series connection of the 3rd resistance (Rq), the anode of first voltage stabilizing didoe (Dq) is connected to described power cathode, and the other end of the 3rd resistance (Rq) is connected to described positive source; (anode of D ' q) is connected to the 4th resistance, and (after the end of R ' q) constituted series connection, (negative electrode of D ' q) was connected to positive source to second voltage stabilizing didoe to second voltage stabilizing didoe, and (other end of R ' q) is connected to power cathode to the 4th resistance; After the negative electrode of the 3rd voltage stabilizing didoe (Dg) was connected to the end formation series connection of the 5th resistance (Rg), the anode of the 3rd voltage stabilizing didoe (Dg) was connected to power cathode, and the other end of the 5th resistance (Rg) is connected to positive source; The base stage of first triode (Vq) is connected to the node of first voltage stabilizing didoe (Dq) and the 3rd resistance (Rq), after emitter is connected to the anode formation series connection of the 8th diode (Db), the negative electrode of the 8th diode (Db) is connected to second voltage stabilizing didoe, and ((node of R ' q), collector electrode are connected to the node of the 3rd voltage stabilizing didoe (Dg) and the 5th resistance (Rg) for D ' q) and the 4th resistance; The base stage of second triode (QGv) is connected to the node of the 3rd voltage stabilizing didoe (Dg) and the 5th resistance (Rg), emitter is connected to positive source, after collector electrode was connected to the end formation series connection of the 6th resistance (QGr), the other end of the 6th resistance (QGr) was connected to power cathode; The 12 diode (D1), the negative electrode of the 12 diode (D1) are connected to the node of the 5th resistance (Rg) and second triode (QGv) emitter, and the anode of the 12 diode (D1) is connected to positive source; The 13 diode (Dt), the anode of the 13 diode (Dt) is connected to the base stage of second triode (QGv), and the negative electrode of the 13 diode (Dt) is connected to positive source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011455950A CN100429850C (en) | 2001-12-31 | 2001-12-31 | Self-controlled circuit break protective circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011455950A CN100429850C (en) | 2001-12-31 | 2001-12-31 | Self-controlled circuit break protective circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1359181A CN1359181A (en) | 2002-07-17 |
| CN100429850C true CN100429850C (en) | 2008-10-29 |
Family
ID=4678267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011455950A Expired - Fee Related CN100429850C (en) | 2001-12-31 | 2001-12-31 | Self-controlled circuit break protective circuit |
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| Country | Link |
|---|---|
| CN (1) | CN100429850C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065035A (en) * | 2014-06-26 | 2014-09-24 | 河南开启电力实业有限公司 | Distribution transformer neutral line breaking protection device |
| JP6610173B2 (en) * | 2015-08-25 | 2019-11-27 | 三菱電機株式会社 | Earth leakage breaker |
| CN106298297A (en) * | 2016-08-31 | 2017-01-04 | 陈国良 | There is the chopper of double-contact moving contact and with the electric power plug socket of leakage switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5448442A (en) * | 1988-06-22 | 1995-09-05 | Siemens Energy & Automation, Inc. | Motor controller with instantaneous trip protection |
| CN2273049Y (en) * | 1995-11-03 | 1998-01-21 | 郭酉茂 | Multifunctional protective switch for electric appliances |
| CN2387648Y (en) * | 1997-06-18 | 2000-07-12 | 潘阔海 | Phase loss protector for three-phase power source |
-
2001
- 2001-12-31 CN CNB011455950A patent/CN100429850C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5448442A (en) * | 1988-06-22 | 1995-09-05 | Siemens Energy & Automation, Inc. | Motor controller with instantaneous trip protection |
| CN2273049Y (en) * | 1995-11-03 | 1998-01-21 | 郭酉茂 | Multifunctional protective switch for electric appliances |
| CN2387648Y (en) * | 1997-06-18 | 2000-07-12 | 潘阔海 | Phase loss protector for three-phase power source |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1359181A (en) | 2002-07-17 |
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