CN108181581B - Intelligent testing device and testing method for residual current operated protector - Google Patents
Intelligent testing device and testing method for residual current operated protector Download PDFInfo
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- CN108181581B CN108181581B CN201810224507.3A CN201810224507A CN108181581B CN 108181581 B CN108181581 B CN 108181581B CN 201810224507 A CN201810224507 A CN 201810224507A CN 108181581 B CN108181581 B CN 108181581B
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- 238000012360 testing method Methods 0.000 title claims abstract description 212
- 230000001012 protector Effects 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 16
- 238000002955 isolation Methods 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000010998 test method Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
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- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses an intelligent testing device of a residual current operated protector, which comprises a testing loop and a testing loop, wherein the testing loop is used for setting the magnitude of a test current for testing the residual current operated protector; the test loop tests the residual current action protector by using test current; the invention also discloses a testing method based on the intelligent testing device, which is used for switching the testing loop and the testing loop by switching off and switching on the alternating current contactor, so that the testing wiring is simplified, the testing working efficiency is improved, the testing wiring is simple and visual, the problem of narrow testing current adjusting range is solved, the misoperation rate and the technical difficulty are reduced, the testing efficiency and the safety performance are effectively improved, and the accuracy of the testing data is effectively improved.
Description
Technical Field
The present invention relates to an intelligent testing device and testing method, and more particularly, to an intelligent testing device and testing method for a residual current operated protector.
Background
With the increase of the service frequency and service life of household appliances and power supply circuits thereof, the leakage phenomenon is easy to generate, and the modern household power supply circuits are all provided with circuit breakers or similar protectors with different level residual current protection functions, so that the residual current action characteristic test of the circuit breakers or protectors is a very important test, and is also an important standard for testing whether the circuit breakers or protectors can be normally used. At present, three types of defects generally exist in test equipment and test methods of residual current operated protectors: (1) The wiring is complex, the test operation steps are complicated, the test circuit wiring, test function selection and test parameter adjustment are all required to be manually set, the test efficiency is low, the professional technical requirements on personnel are high, and the error is large; (2) the residual current regulation range is narrow; (3) The intelligent testing device has an operation interface which is not clear enough and has no visual connection with test requirements, and an effective misoperation protection mechanism is lacked.
Disclosure of Invention
The invention aims to provide an intelligent testing device and a testing method of a residual current action protector, which realize simple switching of experimental residual current adjustment and testing links through switching of an internal circuit, simplify a circuit in a testing process, improve the detection working efficiency, reduce the misoperation rate and the technical difficulty, and effectively improve the accuracy of test data.
The technical scheme adopted by the invention is as follows:
the intelligent testing device for the residual current operated protector comprises a testing loop and a testing loop, wherein the testing loop is used for setting the magnitude of the test current for testing the residual current operated protector; the test loop tests the residual current action protector by using test current;
the test loop comprises an isolation step-down transformer, the isolation step-down transformer is connected with an electric adjustable transformer, and the electric adjustable transformer is sequentially connected with a resistor group, a current adjusting module and a current detecting module; the current detection module is connected with the controller; the current regulating module is connected with the relay group; the relay group is connected with the controller, and the controller is connected with the touch screen;
the test loop and the test loop are switched between off and on through a second alternating current contactor; the second alternating current contactor is connected with the relay group and the current detection module;
the test loop comprises a first alternating-current contactor, wherein the first alternating-current contactor is respectively connected with a timer current transmitter, a second alternating-current contactor, an electric adjustable transformer and a relay group, and the electric adjustable transformer is connected with an isolation step-down transformer; the timer current transmitter is connected with the short delay timer;
the isolation step-down transformer is connected with a direct-current stabilized power supply through corresponding terminals, and the direct-current stabilized power supply also provides power for the controller and the touch screen.
The resistor group is composed of at least two resistors connected in parallel.
The current regulating module consists of at least two third alternating current contactors which are connected in parallel.
The current detection module consists of at least two parallel current transmitters.
And the controller is provided with an analog quantity acquisition module.
The electric adjustable transformer is provided with a lifting and pressing adjusting button for accurately adjusting the numerical value of the test current.
The test loop and the test loop are arranged in the test device body, and a test platform, a wiring terminal row, a short delay timer and a lifting pressure adjusting button are arranged on the outer side of the test device body.
The controller is a singlechip or a PLC controller.
A testing method for an intelligent testing device of a residual current operated protector comprises the following steps:
the test sample is connected into an intelligent testing device according to the relative wiring terminal row, and the intelligent testing device is connected with a power supply;
switching on the second alternating-current contactor and switching off the first alternating-current contactor;
the test loop sets a test current range for test according to the turn-off and turn-on of the third alternating current contactor, adjusts the electric adjustable transformer and accurately adjusts the test current;
opening the second alternating-current contactor and closing the first alternating-current contactor;
the test current is loaded to the test loop, and the short-delay timer obtains the signal of the timer current transducer to start timing;
and judging whether the test sample is qualified or not according to the time of successful tripping of the test sample.
The testing device is connected with a power supply, and particularly the wiring terminal block is respectively connected with an N pole, an A pole, a B pole and a C pole of an external power supply through three-stage switches.
And the test sample is connected into the intelligent testing device according to the corresponding wiring terminal row, and any non-n-pole terminal at the outlet end of the switch of the test sample is connected with the a pole of the wiring terminal row.
The test loop sets a test current range for test according to the turn-off and turn-on of the third alternating current contactor, adjusts the electric adjustable transformer, and accurately adjusts the test current, and specifically comprises the following steps:
setting a working combination of a current adjusting module through a section where the touch screen inputs test current;
the electric adjustable transformer is adjusted by the lifting adjusting button to realize accurate adjustment of the test current;
the current detection module transmits the adjusted test current data to an analog acquisition module in the controller.
Judging whether the test sample is qualified according to the time of successful tripping of the sample, specifically: the test sample is successfully tripped within a specified time range, and the test sample passes the test; if the test sample fails to successfully trip within a specified time, the test sample fails the test.
The current regulating module consists of at least two third alternating current contactors which are connected in parallel.
The current detection module consists of at least two parallel current transmitters.
The invention has the beneficial effects that: the internal circuit of the invention switches the test loop and the test loop through the disconnection and the connection of the alternating current contactor, so that the test wiring is simplified, the test can be completed only by one wiring in the test process, the test working efficiency is improved, the test wiring is simple and visual, the test current is selected through the touch screen, the problem of narrow test current adjusting range is solved, the misoperation rate and the technical difficulty are reduced, the test efficiency and the safety performance are effectively improved, the timing of the short-delay timer is realized, the delay of the program timing is avoided, and the accuracy of test data is effectively improved.
Drawings
FIG. 1 is a circuit diagram of an intelligent test apparatus of the present invention;
FIG. 2 is a schematic diagram of the external structure of the intelligent testing apparatus of the present invention;
wherein: 1. a test platform; 2. a terminal block; 3. a touch screen; 4. a short delay timer; 5. a lifting and pressing adjusting button; 6. a controller; 7. a relay group; 8. a current transducer; 9. a third ac contactor; 10. a resistor; 11. a second ac contactor; 12. a first ac contactor; 13. an electrically variable transformer; 14. an isolation step-down transformer; 15. a DC stabilized power supply; 16. a timer current transducer.
Detailed Description
The invention will be further described with reference to the drawings and the preferred embodiments.
As shown in fig. 1 and 2, an intelligent testing device for a residual current operated protector comprises a testing loop and a testing loop, wherein the testing loop is used for setting the magnitude of a test current for testing the residual current operated protector; the test loop tests the residual current action protector by using test current; the test loop comprises an isolation step-down transformer 14, the isolation step-down transformer 14 is connected with an electric adjustable transformer 13, and the electric adjustable transformer 13 is sequentially connected with a resistor group, a current regulation module and a current detection module; the current detection module is connected with the controller 6, and the controller 6 is provided with an analog quantity acquisition module; the resistor group consists of three parallel resistors 10, the current regulating module consists of three parallel third alternating current contactors 9, the current detecting module consists of three parallel current transmitters 8, the three resistors 10 are respectively connected with the corresponding third alternating current contactors 9, and the three third alternating current contactors 9 are respectively connected with the corresponding current transmitters 8; the current adjusting module is connected with the relay group 7, and the maximum adjustable test current alternating current value is up to 200A; the relay group 7 is connected with the controller 6, the controller 6 is connected with the touch screen 3, and the controller 6 is a singlechip or a PLC controller; the test loop and the test loop are switched on and off by the second alternating current contactor 11; the second alternating-current contactor 11 is connected with the relay group 7 and the current detection module; the test circuit comprises a first alternating-current contactor 12, and the first alternating-current contactor 12 is respectively connected with a timer current transmitter 16, a second alternating-current contactor 11, an electric adjustable transformer 13 and a relay group 7. The electric adjustable transformer 13 is connected with an isolation step-down transformer 14; the timer current transmitter 16 is connected with the short delay timer 4; the isolating step-down transformer 14 is connected to a dc regulated power supply 15 via corresponding terminals, the dc regulated power supply 15 also providing power to the controller 6 and the touch screen 3.
The test loop and the test loop are arranged in the test device body, and the test platform 1, the wiring terminal row 2, the short delay timer 4 and the lifting pressure adjusting button 5 are arranged on the outer side of the test device body. The electric adjustable transformer 13 is provided with a step-up and step-down adjusting button 5 for accurately adjusting the value of the test current.
The current transducer 8 is of three types, namely 15A, 100A and 150A, shunt load impedance is adjusted, the current combination form is designed to be 2A-10A, 15A current transducer work, 10A-80A current transducer work, 100A current transducer work, 80A-110A current transducer work, 150A current transducer work and 110A-200A current combination form, and three types of current transducers work simultaneously, so that when 110A-200A loads current, 15A transducer loads 5.5A-10A, 100A transducer loads 44A-80A, 150A transducer loads 82.5A-110A, and the test current output range is improved on the basis of guaranteeing accurate current measurement in each current section.
A testing method for an intelligent testing device of a residual current operated protector comprises the following steps:
the test sample is connected into an intelligent testing device according to the relative wiring terminal row, and the intelligent testing device is connected with a power supply;
the second ac contactor 11 is turned on, and the first ac contactor 12 is turned off;
the test loop sets a test current range for test according to the turn-off and turn-on of the third alternating current contactor 9, adjusts the electric adjustable transformer 13, and accurately adjusts the test current;
opening the second ac contactor 11 and closing the first ac contactor 12;
the test current is loaded to the test loop, and the short-delay timer 4 obtains the signal of the timer current transducer 16 to start timing;
and judging whether the test sample is qualified or not according to the time of successful tripping of the test sample.
The testing device is connected with a power supply, and particularly the wiring terminal block 2 is respectively connected with an N pole, an A pole, a B pole and a C pole of an external power supply through three-stage switches.
And the test sample is connected into the intelligent testing device according to the corresponding wiring terminal row 2, and any non-n-pole terminal at the outlet end of the switch of the test sample is connected with the a pole of the wiring terminal row.
The test circuit sets a test current range for test according to the turn-off and turn-on of the third ac contactor 9, adjusts the electric adjustable transformer 13, and accurately adjusts the test current, specifically:
the working combination of the current adjusting module is set by inputting the section of the test current through the touch screen 3;
the electric adjustable transformer 13 is regulated by the lifting regulating button 5 to realize accurate regulation of the test current;
the current detection module transmits the adjusted test current data to an analog acquisition module in the controller 6.
Judging whether the test sample is qualified according to the time of successful tripping of the sample, specifically: the test sample is successfully tripped within a specified time range, and the test sample passes the test; if the test sample fails to successfully trip within a specified time, the test sample fails the test.
The current regulation module consists of three third ac contactors 9 connected in parallel.
The current detection module consists of three parallel current transducers 8.
The above description of embodiments is only for aiding in the understanding of the method of the present invention and its core ideas; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (8)
1. The intelligent testing device for the residual current operated protector is characterized by comprising a testing loop and a testing loop, wherein the testing loop and the testing loop are arranged in a testing device body, a testing platform, a wiring terminal row, a short delay timer and a voltage-increasing and decreasing adjusting button are arranged on the outer side of the testing device body, the residual current operated protector is connected into the intelligent testing device according to the corresponding wiring terminal row, and any non-n terminal of a switch outlet end of the residual current operated protector is connected with an a pole of the wiring terminal row;
the test loop is used for setting the test current of the residual current operation protector; the test loop tests the residual current action protector by using test current;
the test loop comprises an isolation step-down transformer, the isolation step-down transformer is connected with an electric adjustable transformer, and the electric adjustable transformer is sequentially connected with a resistor group, a current adjusting module and a current detecting module; the current detection module is connected with the controller; the current regulating module is connected with the relay group; the relay group is connected with the controller, and the controller is connected with the touch screen;
the test loop and the test loop are switched between off and on through a second alternating current contactor; the second alternating current contactor is connected with the relay group and the current detection module;
the test loop comprises a first alternating-current contactor, wherein the first alternating-current contactor is respectively connected with a timer current transmitter, a second alternating-current contactor, an electric adjustable transformer and a relay group, and the timer current transmitter is connected with a short-delay timer;
the isolation step-down transformer is connected with a direct-current stabilized power supply through a corresponding terminal, and the direct-current stabilized power supply also provides power for the controller and the touch screen;
the resistor group consists of at least two resistors connected in parallel;
the current regulating module consists of at least two third alternating current contactors which are connected in parallel;
the current detection module consists of at least two parallel current transmitters.
2. The intelligent testing device of a residual current operated protector according to claim 1, wherein the controller is provided with an analog acquisition module.
3. The intelligent testing device for a residual current operated protector according to claim 1, wherein the step-up/step-down adjusting button is provided on the electrically adjustable transformer for precisely adjusting the value of the test current.
4. A testing method of an intelligent testing apparatus based on a residual current operated protector according to claim 1, comprising:
the test sample is connected into an intelligent testing device according to the corresponding wiring terminal row, and the intelligent testing device is connected with a power supply;
the second alternating-current contactor is switched on, the first alternating-current contactor is switched off,
the test loop sets a test current range for test according to the turn-off and turn-on of the third alternating current contactor, adjusts the electric adjustable transformer and accurately adjusts the test current;
opening the second alternating-current contactor and closing the first alternating-current contactor;
the test current is loaded to the test loop, and the short-delay timer obtains the signal of the timer current transducer to start timing;
and judging whether the test sample is qualified or not according to the time of successful tripping of the test sample.
5. The testing method of claim 4, wherein the intelligent testing device is connected with a power supply, specifically, the wiring terminal row is respectively connected with an N pole, an A pole, a B pole and a C pole of an external power supply through three-stage switches;
and (3) connecting the test sample into the intelligent testing device according to the corresponding wiring terminal row, and connecting any non-n-pole terminal of the test sample switch outlet end with the a pole of the wiring terminal row.
6. The test method according to claim 4, wherein the test circuit sets a test current range for the test according to the turn-off and turn-on of the third ac contactor, adjusts the electrically variable transformer, and precisely adjusts the test current, specifically:
setting a working combination of a current adjusting module through a section where the touch screen inputs test current;
the electric adjustable transformer is adjusted by the lifting adjusting button to realize accurate adjustment of the test current;
the current detection module transmits the adjusted test current data to an analog acquisition module in the controller.
7. The test method according to claim 4, wherein the step of judging whether the test sample is acceptable according to the time of successful tripping of the specimen sample is specifically: the test sample is successfully tripped within a specified time range, and the test sample passes the test; if the test sample fails to successfully trip within a specified time, the test sample fails the test.
8. The test method of claim 4, wherein the current regulation module is comprised of at least two third ac contactors connected in parallel; the current detection module consists of at least two parallel current transmitters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810224507.3A CN108181581B (en) | 2018-03-19 | 2018-03-19 | Intelligent testing device and testing method for residual current operated protector |
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| CN201810224507.3A CN108181581B (en) | 2018-03-19 | 2018-03-19 | Intelligent testing device and testing method for residual current operated protector |
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| CN108181581B true CN108181581B (en) | 2023-12-22 |
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| CN109696626B (en) * | 2019-03-06 | 2024-02-27 | 山东省产品质量检验研究院 | Action range test device for control and protection switch electric appliance and application |
| CN112748321B (en) * | 2020-12-04 | 2023-01-24 | 深圳供电局有限公司 | Testing device for residual current protection device |
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| CN108181581A (en) | 2018-06-19 |
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