CN104459526A - B-type residual current protecting circuit breaker testing device - Google Patents
B-type residual current protecting circuit breaker testing device Download PDFInfo
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- CN104459526A CN104459526A CN201410692188.0A CN201410692188A CN104459526A CN 104459526 A CN104459526 A CN 104459526A CN 201410692188 A CN201410692188 A CN 201410692188A CN 104459526 A CN104459526 A CN 104459526A
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Abstract
The invention discloses a B-type residual current protecting circuit breaker testing device which comprises a touch screen, a PLC, a relay and an electronic load and current testing module. A current output loop comprises two links of power supply and residual current adjustment. The PLC controls switching of the relay, generates residual currents and finishes measurement of tripping currents and break time of all testing experiments. By means of the mode, the B-type residual current protecting circuit breaker testing device is used for detecting and recording break time and tripping current values of a B-type residual current operated circuit breaker, finishes all the experiments of B-type residual current operated circuit-breaker products conforming to the GB22794-2008 standard, and is also applicable to tests of A-type and AC-type residual current operated circuit breaker products.
Description
Technical field
The invention belongs to the field of low-voltage electrical apparatus intelligent measurement instrument, is exactly specifically a kind of device detecting Type B residual current action breaker break and drop-away current.
Background technology
Type B residual current action breaker proving installation is mainly used in the test of specified residual current 500mA and following Type B residual current action breaker product, meet GB22794-2008 " family expenses and similar applications not with and Type B residual current action breaker (Type B RCCB and Type B RCBO) with overcurrent protection " standard.
Residual current action breaker proving installation mostly in the market is A type or AC type residual current action breaker proving installation, does not still have a kind of proving installation containing Type B residual current action breaker product break and drop-away current detection.Be generally the size by change-over switch and potentiometer regulation output electric current, measurement result adopts numeral method, and intelligence degree is low.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of Type B Aftercurrent protection circuit breaker proving installation; for detecting and record Type B residual current action breaker break and drop-away current value; complete all tests of the Type B residual current action breaker product meeting GB22794-2008 standard, be also applicable to A type and the product test of AC type residual current action breaker simultaneously.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of Type B Aftercurrent protection circuit breaker proving installation, comprise touch-screen, PLC, relay, electronic load and testing current module, described touch-screen is connected with LC controller, described PLC is provided with I/O delivery outlet, D/A delivery outlet and A/D input port, described PLC is connected with electronic load with relay with D/A delivery outlet respectively by I/O delivery outlet, described testing current module is connected with PLC by A/D input port, also comprise electric current output loop and break metering circuit, described relay is connected with electric current output loop, described relay and electric current output loop are respectively by electronic load, testing current module and break metering circuit are connected with PLC,
Wherein, described electric current output loop comprises power supply and residual current regulates two links, by the switching of PLC pilot relay, realizes the generation of residual current and completes the drop-away current of all testing experiments and the measurement of break.
In a preferred embodiment of the present invention, described power supply link comprises AC power, variable-frequency power sources, smooth direct current power supply, superposes little direct supply and Voltage pulsating direct-current supply, the residual current providing Type B aftercurrent action protecting to test by above-mentioned power supply, wherein, described variable-frequency power sources and the little direct supply of superposition are current source and control the size of residual current; Described AC power, smooth direct current power supply and Voltage pulsating direct-current supply are voltage-type power supply and control the size of electronic load and the size of residual current.
In a preferred embodiment of the present invention, the frequency of described variable-frequency power sources output current is 150Hz, 400Hz and 1000Hz, and the electric current being switched different frequency by PLC pilot relay enters electric current output loop.
In a preferred embodiment of the present invention, the little direct supply of described superposition, for exporting 0-50mA current source, exports by the D/A delivery outlet of PLC the size that 0-20mA signal controls electric current.
In a preferred embodiment of the present invention, described Voltage pulsating direct-current supply regulates the phase selection angle of pulsating direct current by the controllable silicon in electric current output loop, and phase selection angle is respectively 0 °, 90 ° and 135 °.
In a preferred embodiment of the present invention, the residual current of described Type B aftercurrent action protecting test comprises A type residual current, AC type residual current, simple alternating current residual current, smooth direct current residual current, pulsating direct current residual current, exchanges residual current superposition smooth direct current residual current and pulsating direct current residual current superposition smooth direct current residual current.
In a preferred embodiment of the present invention, described pulsating direct current residual current produced by two commutating phases and three phase rectifier electric current.
In a preferred embodiment of the present invention, described residual current governing loop exports 0-20mA Signal Regulation electronic load by the D/A delivery outlet of PLC, the control when AC power, smooth direct current power supply and Voltage pulsating direct-current supply enter electric current output loop to residual current size.
In a preferred embodiment of the present invention, described proving installation adopts the size of current in Hall current sensor measurement electric current output loop.
In a preferred embodiment of the present invention, the direction of described relay to smooth direct current, pulsating direct current, two commutating phases and three phase rectifier switches.
The invention has the beneficial effects as follows: Type B Aftercurrent protection circuit breaker proving installation of the present invention; for detecting and record Type B residual current action breaker break and drop-away current value; complete all tests of the Type B residual current action breaker product meeting GB22794-2008 standard, be also applicable to A type and the product test of AC type residual current action breaker simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the structured flowchart of a preferred embodiment of Type B Aftercurrent protection circuit breaker proving installation of the present invention;
Fig. 2 discloses the closed test major loop according to a kind of Type B residual current action breaker proving installation of the present invention;
Fig. 3 discloses according to the major loop reduced graph of a kind of Type B residual current action breaker proving installation of the present invention under the test model of A type residual current;
Fig. 4 discloses according to the major loop reduced graph of a kind of Type B residual current action breaker proving installation of the present invention under the test model of AC type residual current;
Fig. 5 discloses a kind of Type B residual current action breaker proving installation according to the present invention major loop reduced graph under the test model of 1000Hz and following (150HZ-1000Hz) simple alternating current residual current;
Fig. 6 discloses according to a kind of Type B residual current action breaker proving installation of the present invention major loop reduced graph under the test model of smooth direct current residual current;
Fig. 7 discloses a kind of Type B residual current action breaker proving installation according to the present invention major loop reduced graph under the test model exchanging residual current superposition smooth direct current residual current;
Fig. 8 discloses a kind of Type B residual current action breaker proving installation according to the present invention major loop reduced graph under the test model of the pulsating direct current residual current of two-phase/three phase rectifier electric current generation;
Fig. 9 discloses a kind of Type B residual current action breaker proving installation according to the present invention major loop reduced graph under the test model of pulsating direct current residual current superposition smooth direct current residual current.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the embodiment of the present invention comprises:
A kind of Type B Aftercurrent protection circuit breaker proving installation, comprise touch-screen, PLC, relay, electronic load and testing current module, described touch-screen is connected with LC controller, described PLC is provided with I/O delivery outlet, D/A delivery outlet and A/D input port, described PLC is connected with electronic load with relay with D/A delivery outlet respectively by I/O delivery outlet, described testing current module is connected with PLC by A/D input port, also comprise electric current output loop and break metering circuit, described relay is connected with electric current output loop, described relay and electric current output loop are respectively by electronic load, testing current module and break metering circuit are connected with PLC,
Wherein, described electric current output loop comprises power supply and residual current regulates two links, by the switching of PLC pilot relay, realizes the generation of residual current and completes the drop-away current of all testing experiments and the measurement of break.In above-mentioned, described electric current output loop is the closed test major loop of Type B residual current action breaker proving installation, as shown in Figure 2.
Power supply comprises 50Hz/220V AC power, variable-frequency power sources (150Hz-1000Hz), smooth direct current power supply, superposes little direct supply and Voltage pulsating direct-current supply, the residual current providing Type B aftercurrent action protecting to test by above-mentioned power supply.Wherein, variable-frequency power sources and the little direct supply of superposition are current source, by the size of its internal control residual current; 50Hz/220V AC power, smooth direct current power supply and Voltage pulsating direct-current supply are voltage-type power supply, by the electronic load size controlled in electric current output loop, thus control the size of residual current.
The frequency of variable-frequency power sources output current is 150Hz, 400Hz and 1000Hz, and the electric current being switched different frequency by PLC pilot relay enters test major loop; Superposing little direct supply for exporting 0-50mA current source, exporting 0-20mA signal by the D/A delivery outlet of PLC and controlling size of current; Voltage pulsating direct-current supply is regulated the phase selection angle of pulsating direct current by controllable silicon by proving installation, phase selection angle is respectively 0 °, 90 ° and 135 °.
Residual current governing loop exports 0-20mA Signal Regulation electronic load by D/A delivery outlet, the control when the voltage-type power supplys such as AC power, smooth direct current power supply, Voltage pulsating direct-current supply enter electric current output loop to residual current size by the PLC of proving installation.Proving installation, by the size of current in Hall current sensor measuring circuit, is realized smooth direct current, pulsating direct current, two commutating phases by relay, and the direction of three phase rectifier switches.
The test result of test product disjunction actuation time gathers in the mode of pulse timing, and the residue non-operating current value of test product, action current value are by proving installation record.
The testing experiment of Type B electric leakage product carries out under following 7 patterns:
(1) test model of A type residual current;
(2) test model of AC type residual current (50HZ);
(3) test model of 1000Hz and following (150HZ-1000Hz) simple alternating current residual current;
(4) test model of smooth direct current residual current;
(5) test model of residual current superposition smooth direct current residual current is exchanged;
(6) test model of the pulsating direct current residual current that two-phase/three phase rectifier electric current produces;
(7) test model of pulsating direct current residual current superposition smooth direct current residual current.
The principle of work that test major loop disclosed by the invention and each several part loop switch thereof control is realized by following technology:
(1) loop switch under the test model of A type residual current
The test model major loop reduced graph of A type residual current as shown in Figure 3.
When testing the drop-away current of test product, the applying mode of residual current is " adding slowly ", and relay K 30/K31/K32/K33 is off state; Pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state, and pilot relay K15-A/K15-B/K15-C closes for selecting phase selection pulsating direct current residual current to put on a certain phase in A/B/C phase; When phase selection angle is 0 °, synchro control relay K 11-N1 and K14-C2 is closed to be used for selecting little direct current residual current to be superimposed on N phase, without the need to superposing little direct current residual current when being 90 °, 135 ° at phase selection angle; When starting the little direct current of superposition, closed being used for of pilot relay K9-1 and K9-2 applies, and pilot relay K6-1/K6-2 selects " forward " or " oppositely "; Pulsating direct current phase selection angle (0 °, 90 °, 135 °) is regulated by controllable silicon by tester, and closed being used for of pilot relay K25 applies pulsating direct current.Closed being used for of pilot relay K10-2 applies electronic load, and progressively regulates electronic load size thus regulate residual current size;
When testing the break of test product, the applying mode of residual current is " impact ", and pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state; A certain before impact in pilot relay K30/K31/K32 closes mutually, and the correspondence in synchro control relay K 15-A/K15-B/K15-C closes mutually, is used for selecting phase selection pulsating direct current residual current to put on a certain phase in A/B/C phase; Closed being used for of pilot relay K25 applies pulsating direct current, and phase selection angle is chosen as 0 ° automatically, and pilot relay K10-2 is closed to be regulated electronic load thus regulates corresponding impact residual current size; Pilot relay K30/K31/K32 disconnects subsequently, starts impact testing current, without the need to superposing little direct current residual current.
(2) loop switch under the test model of AC type residual current (50HZ)
The test model major loop reduced graph of AC type residual current (50HZ) as shown in Figure 4.
When testing the drop-away current of test product, the applying mode of residual current is " adding slowly ", and relay K 30/K31/K32/K33 is off state; Pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state; Pilot relay K1-A/K1-B/K1-C/ and K15-A/K15-B/K15-C closes and selects residual current to put on a certain phase in A/B/C phase; Pilot relay K1-N closed becomes to exchange residual current loop; The closed starting characteristics test that is used for of pilot relay K24; Closed being used for of pilot relay K10-2 applies electronic load, and progressively regulates electronic load size.
When testing the break of test product, the applying mode of residual current is " impact ", and pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state; A certain before impact in pilot relay K30/K31/K32 closes mutually, and synchro control relay K 33 is closed to be used for being formed and to exchange residual current loop, regulates electronic load thus regulates corresponding impact residual current size; Pilot relay K30/K31/K32/K33 disconnects subsequently, starts impact testing current.
(3) loop switch under the test model of 1000Hz and following (150HZ-1000Hz) simple alternating current residual current
The test model major loop reduced graph of 1000Hz and following (150HZ-1000Hz) simple alternating current residual current as shown in Figure 5.
When testing the drop-away current of test product, the applying mode of residual current is " adding slowly ", and pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state; Relay K 30/K31/K32/K33 is off state; Control K12-A1/K13-B1/K14-C1/K11-N1 and K12-A2/K13-B2/K14-C2/K11-N2 selects 1000Hz and following (150HZ ~ 1000Hz) simple alternating current residual current to be superimposed on a certain phase in A/B/C phase or N phase; The closed starting characteristics test that is used for of pilot relay K8-1/K8-2.
When testing the break of test product, the applying mode of residual current is " impact ", and pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state; A certain before impact in pilot relay K30/K31/K32/K33 closes mutually, corresponding a certain of synchro control K12-A1/K13-B1/K14-C1/K11-N1 with K12-A2/K13-B2/K14-C2/K11-N2 closes mutually, selection residual current is superimposed on a certain phase in A/B/C phase or N phase, then regulates variable-frequency power sources thus regulate corresponding impact residual current size; Pilot relay K30/K31/K32/K33 disconnects subsequently, starts impact testing current.
(4) loop switch under the test model of smooth direct current residual current
The test model major loop reduced graph of smooth direct current residual current as shown in Figure 6.
When testing the drop-away current of test product, the applying mode of residual current is " adding slowly ", and pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state; Relay K 30/K31/K32/K33 is off state; Control K12-A1/K13-B1/K14-C1/K11-N1 and K12-A2/K13-B2/K14-C2/K11-N2 select smooth direct current residual current to be superimposed on a certain phase in A/B/C phase or N phase; The closed starting characteristics test that is used for of pilot relay K8-1/K8-2.The closed starting characteristics test that is used for of pilot relay K24; Closed being used for of pilot relay K10-1 applies electronic load, and progressively regulates electronic load size; When starting superposition smooth direct current residual current, closed being used for of pilot relay K7-1 and K7-2 applies, and pilot relay K5-1/K5-2 selects " forward " or " oppositely ".
When testing the break of test product, the applying mode of residual current is " impact ", and pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state; A certain before impact in pilot relay K30/K31/K32/K33 closes mutually, corresponding a certain of synchro control K12-A1/K13-B1/K14-C1/K11-N1 with K12-A2/K13-B2/K14-C2/K11-N2 closes mutually, selection smooth direct current residual current is superimposed on a certain phase in A/B/C phase or N phase, then regulates electronic load thus regulate corresponding impact residual current size; Pilot relay K30/K31/K32/K33 disconnects subsequently, starts impact testing current.
(5) loop switch under the test model of residual current superposition smooth direct current residual current is exchanged
Exchange the test model major loop reduced graph of residual current superposition smooth direct current residual current as shown in Figure 7.
When testing the drop-away current of test product, the applying mode of residual current is " adding slowly ", and relay K 30/K31/K32/K33 is off state; Pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state, pilot relay K15-A/K15-B/K15-C closes for selecting smooth direct current residual current to put on a certain phase in A/B/C phase, synchro control K11-N1/K12-A1/K13-B1/K14-C1 and K11-N2/K12-A2/K13-B2/K14-C2 realizes smooth direct current residual current and is superimposed on a certain phase in N/A/B/C phase, and tester will lock not with exchange residual current and put on same phase; Closed being used for of pilot relay K9-1 and K9-2 applies superposition smooth direct current residual current, and pilot relay K6-1/K6-2 selects " forward " or " oppositely "; Closed being used for of pilot relay K10-2 applies electronic load, and progressively regulates electronic load size thus regulate residual current size, synchro control relay K 24 starting characteristics test.
When testing the break of test product, the applying mode of residual current is " impact ", and pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state; A certain before impact in pilot relay K30/K31/K32 closes mutually, and the correspondence in synchro control K15-A/K15-B/K15-C is a certain to be closed mutually, is used for selecting exchanging residual current and puts on a certain phase in A/B/C phase; Closed being used for of pilot relay K10-2, K24 regulates electronic load thus regulates corresponding impact residual current size; Corresponding a certain of control K12-A1/K13-B1/K14-C1/ K11-N1 and K12-A2/K13-B2/K14-C2/ K11-N2 closes mutually, select little DC stacked a certain phase in A/B/C phase or N phase, and tester will lock not with exchange residual current and put on same phase; Pilot relay K30/K31/K32/K33 disconnects subsequently, starts impact test.
(6) loop switch under the test model of the pulsating direct current residual current that two-phase/three phase rectifier electric current produces
The test model major loop reduced graph of the pulsating direct current residual current that two-phase/three phase rectifier electric current produces as shown in Figure 7.
When testing the drop-away current of test product, the applying mode of residual current is " adding slowly ", and relay K 30/K31/K32/K33 is off state; Pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state; Pilot relay K18/K19/K20 closes and carries out rectification for controlling two-phase/three-phase current in positive half cycles, and pilot relay K21/K22/K23 closes and carries out rectification for controlling two-phase/three-phase current at negative half period ripple; Closed being used for of pilot relay K10-2 applies electronic load, and progressively regulates electronic load size, and starting characteristics test;
When testing the break of test product, the applying mode of residual current is " impact ", and pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state; Certain two-phase/three-phase before impact in pilot relay K30/K31/K32/K33 closes, two-phase/three-phase that synchro control relay K 18/K19/K20 or K21/K22/K23 is corresponding closes, select rectification leakage current to be superimposed on certain two-phase/three-phase, then regulate electronic load thus regulate corresponding impact rectification leakage current size; Pilot relay K30/K31/K32/K33 disconnects subsequently, starts impact testing current.
(7) loop switch under the test model of pulsating direct current residual current superposition smooth direct current residual current
The test model major loop reduced graph of pulsating direct current residual current superposition smooth direct current residual current as shown in Figure 8.
When testing the drop-away current of test product, the applying mode of residual current is " adding slowly ", and relay K 30/K31/K32/K33 is off state; Pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state; Pilot relay K18/K19/K20 closes and carries out rectification for controlling two-phase/three-phase current in the positive half cycles of sine, and pilot relay K21/K22/K23 closes and carries out rectification for controlling two-phase/three-phase current at sinusoidal negative half period ripple; Closed being used for of pilot relay K10-2 applies electronic load, and progressively regulates electronic load size, and starting characteristics test; Synchro control K12-A1/K13-B1/K14-C1/K11-N1 and K12-A2/K13-B2/K14-C2/K11-N2 select smooth direct current residual current to be superimposed on a certain phase in A/B/C phase or N phase, and tester will lock the pulsating direct current residual current do not produced with two-phase/three phase rectifier puts on homophase; When starting superposition smooth direct current residual current, closed being used for of pilot relay K6-1 and K6-2 applies, and pilot relay K9-1/K9-2 selects " forward " or " oppositely ".
When testing the break of test product, the applying mode of residual current is " impact ", and pilot relay K1-A/K1-B/K1-C/K1-N is closed makes test product be in front end power-up state; Certain two-phase/three-phase before impact in pilot relay K30/K31/K32 closes, and two-phase/three-phase that synchro control relay K 18/K19/K20 or K21/K22/K23 is corresponding closes, and selects rectification leakage current to be superimposed on certain corresponding two-phase/three-phase; Closed being used for of pilot relay K10-2 applies electronic load, and progressively regulates electronic load size; Pilot relay K30/K31/K32/K33 disconnects subsequently, starts impact testing current.Synchro control K12-A1/K13-B1/K14-C1/K11-N1 and K12-A2/K13-B2/K14-C2/K11-N2 select smooth direct current residual current to be superimposed on a certain phase in A/B/C phase or N phase, and tester will lock the pulsating direct current residual current do not produced with two-phase/three phase rectifier puts on homophase; When starting superposition smooth direct current residual current, closed being used for of pilot relay K6-1 and K6-2 applies, and pilot relay K9-1/K9-2 selects " forward " or " oppositely ".
The monnolithic case (figure does not look) of Type B Aftercurrent protection circuit breaker proving installation of the present invention, comprises machine case body, case front panel part, cabinet rear panel part and cabinet inside.Wherein, case front panel comprises touch-screen, connection terminal, pilot lamp, scram button and power knob; Cabinet rear panel comprises isolating switch, three-phase four-wire power inlet wire, alternating current 220V electric power incoming line and fan; Cabinet inside comprises PLC measurement and control unit, relay module, electronic load (for regulating the size of current in test loop), current measurement module, break sprocket pulse and electric current output loop; Electric current output loop mainly comprises variable-frequency power sources, smooth direct current power supply, pulsating direct current Phase angle control device.
The major function of proving installation: produce and the adjustable action current meeting Type B residual current circuit breaker standard, record break and drop-away current, thus the interrupting performance measuring isolating switch.
Proving installation produces and adjustable residual current kind has:
(1) 50Hz-1000Hz exchanges residual current;
(2) the complex wave electric current be made up of 50Hz, 1kHz and 10Hz frequency;
(3) residual current superposition smooth direct current residual current is exchanged;
(4) pulsating direct current residual current superposition smooth direct current residual current;
(5) pulsating direct current residual current (band closing phase angle controls);
(6) the direct current residual current that the rectification circuit that two-phase is powered produces;
(7) the direct current residual current of the rectification circuit generation of three phase supply;
(8) smooth direct current residual current.
Proving installation adopts touch-screen, PLC, electronic load, variable-frequency power sources and level and smooth direct supply for regulating the electric current flowing through Type B residual current circuit breaker test product, can Selection experiment pattern on touch-screen, setting test parameters, display test findings, food preservation test data.PLC receives instruction, can under interchange residual current experiment model, or under pulsating direct current residual current experiment model, control variable-frequency power sources and level and smooth direct supply, the loop that electric current slowly applies is formed with electronic load, test specimen, and the loop that electric current applies suddenly, and complete the measurement of drop-away current and break.
Variable-frequency power sources is voltage source, and the frequency of output current is the complex wave that 150Hz, 400Hz, 1000Hz are sinusoidal wave and be made up of 50Hz, 1kHz and 10Hz frequency, realizes the switching to these four kinds of waveforms by relay.Smooth direct current power supply is 0-50mA current source.
Variable-frequency power sources has pulsating direct current with the kind of level and smooth direct supply adjustable current, 50Hz exchanges, two commutating phases, three phase rectifier, smooth direct current, the scope regulating electric current is 0-2000mA, three ranges are divided to regulate, be respectively 0-100mA, 100mA-1000mA, 1000mA-2000mA, exports actual current value and is less than 0.5% relative to the deviation of variable.
The analog quantity that PLC exports 0-20mA by D/A delivery outlet regulates electronic load, realizes the control to electric current.By the size of current in Hall current sensor measuring circuit, electric current divides three ranges to measure, and is respectively 0-100mA, 100mA-1000mA, 1000mA-2000mA.
PLC measurement and control unit, according to the target current of setting, automatically switches to corresponding range output current by pilot relay.
The break of break sprocket pulse detection experiment sample, tester is, by trigger circuit, the current signal in loop is converted to pulse width signal, then the metering of the time of carrying out.Within the scope of 0-1000ms, the break measured of leakage current detector relative to the deviation of variable within the scope of ± 2ms.
Proving installation is realized smooth direct current, pulsating direct current by relay, two commutating phases, and the direction of three phase rectifier switches.By pilot relay realize to A, B, C, N tetra-of isolating switch extremely in a random pole apply electric current.
Tester regulates the closing phase angle of pulsating direct current by controllable silicon, and the closing phase angle of pulsating direct current has three kinds, is respectively 0 °, 90 °, 135 °, realizes the switching to three kinds of closing phase angles with relay.
In sum; Type B Aftercurrent protection circuit breaker proving installation of the present invention; for detecting and record Type B residual current action breaker break and drop-away current value; complete all tests of the Type B residual current action breaker product meeting GB22794-2008 standard, be also applicable to A type and the product test of AC type residual current action breaker simultaneously.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a Type B Aftercurrent protection circuit breaker proving installation, it is characterized in that, comprise touch-screen, PLC, relay, electronic load and testing current module, described touch-screen is connected with LC controller, described PLC is provided with I/O delivery outlet, D/A delivery outlet and A/D input port, described PLC is connected with electronic load with relay with D/A delivery outlet respectively by I/O delivery outlet, described testing current module is connected with PLC by A/D input port, also comprise electric current output loop and break metering circuit, described relay is connected with electric current output loop, described relay and electric current output loop are respectively by electronic load, testing current module and break metering circuit are connected with PLC,
Wherein, described electric current output loop comprises power supply and residual current regulates two links, by the switching of PLC pilot relay, realizes the generation of residual current and completes the drop-away current of all testing experiments and the measurement of break.
2. Type B Aftercurrent protection circuit breaker proving installation according to claim 1, it is characterized in that, described power supply link comprises AC power, variable-frequency power sources, smooth direct current power supply, superposes little direct supply and Voltage pulsating direct-current supply, the residual current providing Type B aftercurrent action protecting to test by above-mentioned power supply, wherein, described variable-frequency power sources and the little direct supply of superposition are current source and control the size of residual current; Described AC power, smooth direct current power supply and Voltage pulsating direct-current supply are voltage-type power supply and control the size of electronic load and the size of residual current.
3. Type B Aftercurrent protection circuit breaker proving installation according to claim 2; it is characterized in that; the frequency of described variable-frequency power sources output current is 150Hz, 400Hz and 1000Hz, and the electric current being switched different frequency by PLC pilot relay enters electric current output loop.
4. Type B Aftercurrent protection circuit breaker proving installation according to claim 2, is characterized in that, the little direct supply of described superposition, for exporting 0-50mA current source, exports by the D/A delivery outlet of PLC the size that 0-20mA signal controls electric current.
5. Type B Aftercurrent protection circuit breaker proving installation according to claim 2, is characterized in that, described Voltage pulsating direct-current supply regulates the phase selection angle of pulsating direct current by the controllable silicon in electric current output loop, and phase selection angle is respectively 0 °, 90 ° and 135 °.
6. Type B Aftercurrent protection circuit breaker proving installation according to claim 2; it is characterized in that, the residual current of described Type B aftercurrent action protecting test comprises A type residual current, AC type residual current, simple alternating current residual current, smooth direct current residual current, pulsating direct current residual current, exchanges residual current superposition smooth direct current residual current and pulsating direct current residual current superposition smooth direct current residual current.
7. Type B Aftercurrent protection circuit breaker proving installation according to claim 6, is characterized in that, described pulsating direct current residual current produced by two commutating phases and three phase rectifier electric current.
8. Type B Aftercurrent protection circuit breaker proving installation according to claim 2; it is characterized in that; described residual current governing loop exports 0-20mA Signal Regulation electronic load by the D/A delivery outlet of PLC, the control when AC power, smooth direct current power supply and Voltage pulsating direct-current supply enter electric current output loop to residual current size.
9. Type B Aftercurrent protection circuit breaker proving installation according to claim 1, is characterized in that, described proving installation adopts the size of current in Hall current sensor measurement electric current output loop.
10. Type B Aftercurrent protection circuit breaker proving installation according to claim 1, is characterized in that, the direction of described relay to smooth direct current, pulsating direct current, two commutating phases and three phase rectifier switches.
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| CN105319403A (en) * | 2015-12-09 | 2016-02-10 | 法泰电器（江苏）股份有限公司 | Multi-station residual current test connection device |
| CN106199396A (en) * | 2015-05-05 | 2016-12-07 | 江苏苏益电器股份有限公司 | Online residual current circuit breaker dynamic characteristic detection device and detection method thereof |
| CN107332207A (en) * | 2017-08-30 | 2017-11-07 | 乐清拓优电气有限公司 | A kind of sensitive failture current protection device of alternating current-direct current |
| CN108181581A (en) * | 2018-03-19 | 2018-06-19 | 山东省产品质量检验研究院 | The intelligent test device and test method of a kind of residual current action protector |
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| CN111781418A (en) * | 2020-06-22 | 2020-10-16 | 北京智芯微电子科技有限公司 | Method, device and system for monitoring residual current of low-voltage power distribution network |
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| CN104898050B (en) * | 2015-06-16 | 2018-06-08 | 上海电器科学研究所（集团）有限公司 | A kind of multi-output power supply for Aftercurrent protection circuit breaker test device |
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| CN108181581A (en) * | 2018-03-19 | 2018-06-19 | 山东省产品质量检验研究院 | The intelligent test device and test method of a kind of residual current action protector |
| CN108181581B (en) * | 2018-03-19 | 2023-12-22 | 山东省产品质量检验研究院 | Intelligent testing device and testing method for residual current operated protector |
| CN109270448A (en) * | 2018-10-11 | 2019-01-25 | 上海电器科学研究院 | A kind of breaker residual current acting characteristic test system |
| CN110281273A (en) * | 2019-06-27 | 2019-09-27 | 上海电器科学研究所（集团）有限公司 | Industrial robot emergency stop dwell time and stop distance test device and test method |
| CN110281273B (en) * | 2019-06-27 | 2024-05-03 | 上海电器科学研究所（集团）有限公司 | Industrial robot scram stop time and stop distance testing device and testing method |
| CN110456262A (en) * | 2019-08-02 | 2019-11-15 | 上海电器科学研究所（集团）有限公司 | Band residual current protecting function automatic closing detection device for circuit breaker and test method |
| CN111781418A (en) * | 2020-06-22 | 2020-10-16 | 北京智芯微电子科技有限公司 | Method, device and system for monitoring residual current of low-voltage power distribution network |
| CN111781418B (en) * | 2020-06-22 | 2023-10-10 | 北京智芯微电子科技有限公司 | Low-voltage distribution network residual current monitoring method, equipment and system |
| CN112611951A (en) * | 2020-11-27 | 2021-04-06 | 神华四川能源有限公司江油发电厂 | RCD (remote control device) online test system and test method thereof |
| CN112731007A (en) * | 2020-12-11 | 2021-04-30 | 深圳供电局有限公司 | Residual current protection device test system |
| CN112731007B (en) * | 2020-12-11 | 2023-09-15 | 深圳供电局有限公司 | Residual current protection device test system |
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