CN207895046U

CN207895046U - A kind of intelligent test device of residual current action protector

Info

Publication number: CN207895046U
Application number: CN201820370034.3U
Authority: CN
Inventors: 辛勇; 刘亚; 韩祥江; 李铮; 宋智
Original assignee: Shandong Institute for Product Quality Inspection
Current assignee: Shandong Institute for Product Quality Inspection
Priority date: 2018-03-19
Filing date: 2018-03-19
Publication date: 2018-09-21
Anticipated expiration: 2028-03-19

Abstract

The utility model discloses a kind of intelligent test device of residual current action protector, including test loop and test loop, the test loop is used to set the test current size of test residual current action protector；Residual current action protector is tested using test current in test loop；The utility model switches over test loop and test loop by disconnection, the connection of A.C. contactor, simplify test wiring, improve test job efficiency, test wiring simple, intuitive, solve the problems, such as that test current adjustable range is relatively narrow, reduce misuse rate and technical difficulty, effectively increase test efficiency and security performance, effectively increases the accuracy of test data.

Description

A kind of intelligent test device of residual current action protector

Technical field

The utility model is related to a kind of intelligent test device more particularly to a kind of intelligent testings of residual current action protector Trial assembly is set.

Background technology

With the growth of household electrical appliance and its supply line's frequency of use and service life, leaky is easy tod produce, it is existing Carry the breaker of different brackets residual current protecting function or similar protector for domestic power circuit, such breaker or Whether the residual current acting attribute inspection of protector is an extremely important test, and examine breaker or protector that can The major criterion of enough normal uses.Currently, the test equipment of residual current action protector, generally existing following three types defect： (1) wiring is complicated, and test operation step is complicated and hookup wiring, test function select, inspection parameter adjusting is required to hand Dynamic setting, test efficiency is relatively low, more demanding to the professional technique of personnel, and application condition is big；(2) residual current adjustable range compared with It is narrow；(3) intelligent test device, operation interface not enough clearly with test requirements document without ocular connection, lack effective maloperation Protection mechanism.

Utility model content

The purpose of this utility model is to provide the intelligent test device of residual current action protector, passes through internal circuit Switching realizes that experiment residual current adjusts the simple switching with test session, and the circuit during short form test improves detection work Make efficiency, reduce misuse rate and technical difficulty, effectively increases the accuracy of test data.

The technical solution that the utility model is taken is：

A kind of intelligent test device of residual current action protector, including test loop and test loop, the test Circuit includes isolated buck transformer, and isolated buck transformer is connect with electronic adjustable transformer, and electronic adjustable transformer is electronic Adjustable transformer is connect with resistor group, current regulating module, current detection module successively；The current detection module and control Device connects；The current regulating module is connect with relay group；The relay group is connect with controller, controller and touch screen Connection；

The test loop and test loop are mutually switched by the second A.C. contactor off and on；Described second hands over Stream contactor is connect with relay group and current detection module；

The test loop include the first A.C. contactor, the first A.C. contactor respectively with timer current transducer, Second A.C. contactor, electronic adjustable transformer, the connection of relay group, the electronic adjustable transformer and isolated buck transformer Connection；The timer current transducer is connect with short delay timer；

The isolated buck transformer is connect by corresponding terminal with D.C. regulated power supply, and the D.C. regulated power supply is also Device provides power supply with touch screen in order to control.

The resistor group is made of at least two resistors in parallel.

The current regulating module is made of at least two third A.C. contactors in parallel.

The current detection module is made of at least two current transducers in parallel.

It is provided with analogue collection module on the controller.

Buck regulation button is provided on electronic adjustable transformer, the numerical value for accurately adjusting test current.

The test loop and test loop are placed in test device ontology, and the test device outer body is provided with Test platform, connecting terminal block, short delay timer and buck regulation button.

The controller is microcontroller or PLC controller.

The beneficial effects of the utility model：The utility model internal circuit by the disconnection of A.C. contactor, connect to surveying It tries circuit and test loop switches over, simplify test wiring, only need progress primary connection that can complete during experiment Test, improves test job efficiency, and test wiring simple, intuitive solves test current by touch screen Selection experiment electric current The relatively narrow problem of adjustable range, reduces misuse rate and technical difficulty, effectively increases test efficiency and security performance, this reality The delay of program timing is avoided by short delay timer timing with novel, effectively increases the accuracy of test data.

Description of the drawings

Fig. 1 is the circuit diagram of the utility model intelligent test device；

Fig. 2 is the external structure schematic diagram of the utility model intelligent test device；

Wherein：1. test platform；2. connecting terminal block；3. touch screen；4. short delay timer；5. buck adjusting is pressed Button；6. controller；7. relay group；8. current transducer；9. third A.C. contactor；10. resistor；11. the second exchange connects Tentaculum；12. the first A.C. contactor；13. electronic adjustable transformer；14. isolated buck transformer；15. D.C. regulated power supply； 16. timer current transducer.

Specific implementation mode

The utility model is described in further detail with preferred embodiment below in conjunction with the accompanying drawings.

As depicted in figs. 1 and 2, a kind of intelligent test device of residual current action protector, including test loop and examination Circuit is tested, the test loop is used to set the test current size of test residual current action protector；Test loop utilizes Test current tests residual current action protector；Test loop includes isolated buck transformer 14, and isolated buck becomes Depressor 14 is connect with electronic adjustable transformer 13, electronic adjustable transformer 13 successively with resistor group, current regulating module, electric current Detection module connects；Current detection module is connect with controller 6, and analogue collection module is provided on controller 6；Resistor group It is made of three resistors 10 in parallel, current regulating module is made of three third A.C. contactors 9 in parallel, current detecting Module is made of three current transducers 8 in parallel, and three resistors 10 are distinguished corresponding third A.C. contactor 9 and connected It connects, three third A.C. contactors 9 are distinguished corresponding current transducer 8 and connected；Current regulating module connects with relay group 7 It connects, adjustable test current exchange value maximum to 200A；Relay group 7 is connect with controller 6, and controller 6 connects with touch screen 3 It connects, controller 6 is microcontroller or PLC controller；Test loop and test loop are disconnected and are connect by the second A.C. contactor 11 Logical mutually switching；Second A.C. contactor 11 is connect with relay group 7 and current detection module；Test loop includes first A.C. contactor 12, the first A.C. contactor 12 respectively with timer current transducer 16, the second A.C. contactor 11, it is electronic can Voltage regulator/transformer 13, relay group 7 connect.The electronic adjustable transformer 13 is connect with isolated buck transformer 14；The timing Device current transducer 16 is connect with short delay timer 4；Isolated buck transformer 14 passes through corresponding terminal and DC voltage-stabilizing electricity Source 15 connects, and also device 6 provides power supply to the D.C. regulated power supply 15 with touch screen 3 in order to control.

Test loop and test loop are placed in test device ontology, and the test device outer body is provided with experiment Platform 1, connecting terminal block 2, short delay timer 4 and buck regulation button 5.Lifting is provided on electronic adjustable transformer 13 Regulation button 5 is pressed, the numerical value for accurately adjusting test current.

It is 15A, 100A, 150A three types that current transducer 8, which selects specification, adjusts its shunt loading impedance, is considered To instrument and meter, in low level, a high position for range, measurement accuracy can all be declined, and be 2A ~ 10A by currents combination form design, The work of 15A timer current transducers, currents combination form design are 10A ~ 80A, and 100A timer current transducers work, 80A~110A（150A timer current transducers work）、110A~200A（Three specification timer current transducers while work Make）, when such 110A ~ 200A load currents, 15A type transmitters load 5.5A ~ 10A, and 100A type transmitters load 44A ~ 80A, 150A type transmitters load 82.5A ~ 110A, and each current segment improves residual current on the basis of ensureing that precision current measures Output area.

Using a kind of test method of residual current action protector intelligent test device, including：

Test specimen is accessed into intelligent test device, intelligent test device connection electricity according to the opposite connecting terminal block wanted Source；

The second A.C. contactor 11 is connected, the first A.C. contactor 12 is disconnected；

Test loop switches off and on test current range of the setting for experiment according to third A.C. contactor 9, adjusts Section electric adjustable transformer 13, accurately adjusts test current；

The second A.C. contactor 11 is disconnected, the first A.C. contactor 12 is connected；

Test current is loaded onto test loop, and the signal that short delay timer 4 obtains timer current transducer 16 starts Timing；

The time successfully threaded off according to specimen sample judges whether test specimen is qualified.

The test device connects power supply, specially connecting terminal block 2 by three step switch respectively with the N of external power supply Pole, the poles A, the poles B, C are extremely connected.

Described that test specimen is accessed intelligent test device according to the opposite connecting terminal block 2 wanted, test specimen switchs out The extreme sons of the arbitrarily non-n of line end are extremely connected with a of connecting terminal block.

The test loop switches off and on test current model of the setting for experiment according to third A.C. contactor 9 It encloses, adjusts electronic adjustable transformer 13, accurately adjust test current, specially：

The work combination that current regulating module is arranged in the section residing for test current is inputted by touch screen 3；

The accurate adjusting that electronic adjustable transformer 13 realizes test current is adjusted using lift adjustment button 5；

Test current data after adjustment are transferred to the analogue collection module in controller 6 by current detection module.

The time successfully threaded off according to specimen sample judges whether test specimen is qualified, specially：Test specimen exists It successfully threads off in defined time range, then test specimen passes through test；If test specimen cannot succeed before the deadline It threads off, then test specimen does not pass through test.

The current regulating module is made of three third A.C. contactors 9 in parallel.

The current detection module is made of three current transducers 8 in parallel.

The explanation of above example is only intended to the method and its core concept that help understands the utility model；Meanwhile it is right It is had in specific embodiments and applications according to the thought of the utility model in those of ordinary skill in the art Change place, in conclusion the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. a kind of intelligent test device of residual current action protector, which is characterized in that including test loop and test loop, The test loop includes isolated buck transformer, and isolated buck transformer is connect with electronic adjustable transformer, it is electronic can modulation Depressor, electronic adjustable transformer are connect with resistor group, current regulating module, current detection module successively；The current detecting Module is connect with controller；The current regulating module is connect with relay group；The relay group is connect with controller, control Device is connect with touch screen；

The test loop and test loop are mutually switched by the second A.C. contactor off and on；Second exchange connects Tentaculum is connect with relay group and current detection module；

The test loop include the first A.C. contactor, the first A.C. contactor respectively with timer current transducer, second A.C. contactor, electronic adjustable transformer, the connection of relay group, the electronic adjustable transformer connect with isolated buck transformer It connects；The timer current transducer is connect with short delay timer；

The isolated buck transformer is connect by corresponding terminal with D.C. regulated power supply, and the D.C. regulated power supply is also control Device processed provides power supply with touch screen.

2. a kind of intelligent test device of residual current action protector as described in claim 1, which is characterized in that the electricity Resistance device group is made of at least two resistors in parallel.

3. a kind of intelligent test device of residual current action protector as described in claim 1, which is characterized in that the electricity Stream adjustment module is made of at least two third A.C. contactors in parallel.

4. a kind of intelligent test device of residual current action protector as described in claim 1, which is characterized in that the electricity Stream detection module is made of at least two current transducers in parallel.

5. a kind of intelligent test device of residual current action protector as described in claim 1, which is characterized in that the control It is provided with analogue collection module on device processed.

6. a kind of intelligent test device of residual current action protector as described in claim 1, which is characterized in that it is electronic can Buck regulation button is provided on voltage regulator/transformer, the numerical value for accurately adjusting test current.

7. a kind of intelligent test device of residual current action protector as described in claim 1, which is characterized in that the survey Examination circuit and test loop are placed in test device ontology, and the test device outer body is provided with test platform, wiring Terminal block, short delay timer and buck regulation button.