CN103576062A - Wireless frequency conversion resonance withstand voltage testing device and testing method thereof - Google Patents
Wireless frequency conversion resonance withstand voltage testing device and testing method thereof Download PDFInfo
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- CN103576062A CN103576062A CN201310513437.0A CN201310513437A CN103576062A CN 103576062 A CN103576062 A CN 103576062A CN 201310513437 A CN201310513437 A CN 201310513437A CN 103576062 A CN103576062 A CN 103576062A
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Abstract
The invention discloses a wireless frequency conversion resonance withstand voltage testing device and a testing method thereof. The device comprises a handheld manipulator, a frequency conversion controller and an external loop. The handheld manipulator is in wireless connection with the frequency conversion controller, and the external loop is connected with the frequency conversion controller. The handheld manipulator comprises a first wireless receiving and dispatching module, a first touch terminal and a storage battery. The first touch terminal receives test setting parameters input by testing personnel, and the test setting parameters are sent to the frequency conversion controller through the first wireless receiving and dispatching module. The frequency conversion controller comprises a second wireless receiving and dispatching module, a frequency converter and a second touch terminal. The second wireless receiving and dispatching module receives the test setting parameters sent by the first wireless receiving and dispatching module and forwards the test setting parameters to the frequency converter, and the frequency converter controls the external loop according to the test setting parameters so that a withstand voltage test can be made. According to the wireless frequency conversion resonance withstand voltage testing device and the testing method thereof, wireless control over a variable-frequency power source can be achieved by the aid of a touch screen, operating personnel can control a testing main machine within a certain distance, and the safety of site operating personnel can be guaranteed as much as possible.
Description
Technical field
The present invention relates to electric system electrical installation project construction field, relate in particular to a kind of wireless changing resonant withstand voltage testing device and test method thereof.
Background technology
In electric device installation work electrical equipment commissioning test work, the dielectric voltage withstand test of electrical equipment is had to DC voltage withstand test and two kinds of modes of AC voltage withstand test conventionally.Variable-frequency resonance alternating-current voltage-withstanding test is one of main method of examining at present insulation of electrical installation intensity, especially applicable to high voltage, jumbo test specimen.While utilizing traditional frequency conversion during Resonance Voltage Withstand Test device to test, need operating personnel carry out correct wiring and carry out manual operation according to test circuit, record test figure, judge that whether test specimen is qualified.Owing to there being direct electrical connection between a whole set of test unit and high-pressure system, and testing equipment from test specimen away from time, need to have special messenger to guard tested device, in operation security not enough, can not realize automatic input and the judgement of data.
Summary of the invention
The technical problem to be solved in the present invention is the inadequate defect of security when carrying out voltage-withstand test in prior art, and wireless changing resonant withstand voltage testing device and test method thereof that a kind of processing safety is high are provided.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of wireless changing resonant withstand voltage testing device is provided, comprises handheld manipulator, frequency-variable controller and external circuit, between handheld manipulator and frequency-variable controller, by wireless connections, external circuit is connected with frequency-variable controller;
Handheld manipulator comprises the first radio receiving transmitting module, the first touch terminal and accumulator, and accumulator is handheld manipulator power supply, and the first touch terminal receives the test parameters of tester's input, and sends to frequency-variable controller by the first radio receiving transmitting module;
Frequency-variable controller comprises the second radio receiving transmitting module, frequency converter and the second touch terminal, the second radio receiving transmitting module receives the test parameters of the first radio receiving transmitting module transmission and is transmitted to frequency converter, and frequency converter is controlled external circuit according to test parameters and carried out withstand voltage test.
In device of the present invention, described the first touch terminal is provided with USB interface, outer computer or mobile terminal are connected with this first touch terminal by USB interface, and this first touch terminal sends by the first radio receiving transmitting module by USB interface acceptance test parameters again.
In device of the present invention, on described the second touch terminal, be provided with USB interface, outer computer or mobile terminal are connected with this second touch terminal by USB interface, and this second touch terminal is by touch-screen or USB interface acceptance test parameters.
In device of the present invention, external circuit comprises exciting transformer, Reactor banks and capacitive divider, and test specimen is connected with Reactor banks exciting transformer.
In device of the present invention, this device also comprises pattern modular converter, is connected with the second touch terminal with handheld manipulator, for controlling this device, enters wired control model or wireless control mode.
In device of the present invention, described the first touch terminal and the second touch terminal are equipped with test report generation module, for generate test report when test completes, and by the electronic signature of touch-screen acceptance test personnel input.
In device of the present invention, between described the first transceiver module and the second transceiver module, pass through Bluetooth protocol transceiving data.
The present invention solves another technical scheme that its technical matters adopts:
A kind of wireless frequency conversion resonance vibration pressure-proof test method is provided, and the wireless changing resonant withstand voltage testing device based on above-mentioned, comprises the following steps:
By the first touch terminal setting, when time various parameters of test, by the first radio receiving transmitting module, send to frequency-variable controller;
Frequency-variable controller carries out voltage-withstand test according to the parameter arranging, and when voltage is raised to the withstand voltage of test, automatically carries out withstand voltage timing, when the time is during pressure-resistant time when arranging, and automatic step-down;
Automatically record the every data in process of the test, while having tested, generate test report.
In test method of the present invention, also comprise step:
By USB interface, derive test report.
The beneficial effect that the present invention produces is: the present invention can realize the controlled in wireless to variable-frequency power sources by touch terminal, and operating personnel can control test main frame with interior at certain distance, guarantee most possibly site operation personnel's safety.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of the wireless changing resonant withstand voltage testing device of the embodiment of the present invention;
Fig. 2 is the circuit diagram of the wireless changing resonant withstand voltage testing device of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The wireless changing resonant withstand voltage testing device of the embodiment of the present invention, as shown in Figure 1, comprise handheld manipulator 10, frequency-variable controller 20 and external circuit 30, between handheld manipulator 10 and frequency-variable controller 20, by wireless connections, external circuit 20 is connected with frequency-variable controller 30.
Handheld manipulator 10 comprises the first radio receiving transmitting module 11, the first touch terminal 12 and accumulator 13, accumulator 13 is handheld manipulator 10 power supplies, the first touch terminal 12 receives the test parameters of tester's input, and sends to frequency-variable controller 20 by the first radio receiving transmitting module 11.
Frequency-variable controller 20 comprises the second radio receiving transmitting module 21, frequency converter 22 and the second touch terminal 23, the second radio receiving transmitting module 21 receives the test parameters of the first radio receiving transmitting module 11 transmissions and is transmitted to frequency converter 22, and frequency converter 22 is controlled external circuit 30 according to test parameters and carried out withstand voltage test.
In one embodiment of the invention, the first touch terminal 12 is provided with USB interface, outer computer or mobile terminal are connected with this first touch terminal 12 by USB interface, and this first touch terminal 12 sends by the first radio receiving transmitting module 11 by USB interface acceptance test parameters again.
In like manner, on the second touch terminal 23, be also provided with USB interface, outer computer or mobile terminal are connected with this second touch terminal 23 by USB interface, and this second touch terminal 23 is by touch-screen or USB interface acceptance test parameters.
External circuit 30 comprises exciting transformer 31, Reactor banks 32 and capacitive divider 33, and test specimen is connected with Reactor banks 32 and exciting transformer 31.
This device also comprises pattern modular converter, is connected with the second touch terminal 23 with handheld manipulator 10, for controlling this device, enters wired control model or wireless control mode.
In a preferred embodiment of the present invention, the first touch terminal 12 and the second touch terminal 23 are equipped with test report generation module, for generate test report when test completes, and by the electronic signature of touch-screen acceptance test personnel input.
In a preferred embodiment of the present invention, as shown in Figure 2, handheld manipulator 10 comprises direct-flow storage battery BC, SB4/SB5 control knob, touch-screen MT2, radio receiving transmitting module KYL2; Frequency-variable controller 20 comprises frequency converter A FP, three-phase power switch QF, Switching Power Supply ZL, control knob SB1/SB2/SB3, ac sensor JGQ, touch-screen MT1, radio receiving transmitting module KYL1, high-voltage signal pilot lamp XD, voltage dependent resistor (VDR) YM, discharge tube FD; External circuit comprises exciting transformer LCB, reactor L, capacitive divider DRF etc.
In handheld manipulator 10 loops, direct-flow storage battery BC+5V terminal is connected with No. 2 terminals of control knob SB4,-5V terminal is connected with No. 4 terminals of control knob SB4, and+24V terminal is connected with No. 2 terminals of control knob SB5, and-24V terminal is connected with No. 4 terminals of control knob SB5; No. 1 terminal of control knob SB4 and radio receiving transmitting module KYL2+5V terminal is connected, No. 3 terminals of control knob SB4 and radio receiving transmitting module KYL2-5V terminal is connected, No. 1 terminal of control knob SB5 and touch-screen MT2-24V terminal is connected, No. 3 terminals of control knob SB5 and touch-screen MT2+24V terminal is connected; The 485+ terminal of touch-screen MT2 is connected with the 485+ terminal of radio receiving transmitting module KYL2, and the 485-terminal of touch-screen MT2 is connected with the 485-terminal of radio receiving transmitting module KYL2.Direct-flow storage battery BC can charge by charger.
In the loop of frequency-variable controller 20, outside three-phase supply A/B/C is connected with 1/3/5 terminal of three-phase power switch QF respectively, 2/4/6 terminal of three-phase power switch QF is connected with the R/S/T terminal of frequency converter A FP respectively, the zero line N of outside three-phase supply is connected with the N terminal of Switching Power Supply ZL, the N terminal of frequency converter respectively, and No. 2 terminals of three-phase power switch QF are connected with the L terminal of Switching Power Supply ZL.Switching Power Supply ZL-5V terminal and radio receiving transmitting module KYL1-5V terminal is connected, Switching Power Supply ZL+5V terminal and radio receiving transmitting module KYL1+5V terminal is connected, Switching Power Supply ZL-24V terminal respectively with No. 3 terminals of ac sensor JGQ, touch-screen MT1-24V terminal, the GND terminal of frequency converter A FP, the COM2 terminal of frequency converter A FP is connected, Switching Power Supply ZL+24V terminal respectively with No. 1 terminal of ac sensor JGQ, touch-screen MT1+24V terminal, one end of high-voltage signal lamp XD is connected, the ground terminal of Switching Power Supply ZL is connected with the earth with the ground terminal of frequency converter.No. 5 terminals of ac sensor JGQ are connected with the AI1 terminal of frequency converter, No. 4 terminals of ac sensor JGQ respectively with one end of voltage dependent resistor (VDR) YM, No. 1 terminal of one end of discharge tube FD, glue benzene two core sockets be connected, No. 6 terminals of ac sensor JGQ respectively with the other end of voltage dependent resistor (VDR) YM, No. 2 terminals of the other end of discharge tube FD, glue benzene two core sockets be connected.The 485-terminal of touch-screen MT1 is connected with No. 3 terminals of control knob SB3, and the 485+ terminal of touch-screen MT1 is connected with No. 4 terminals of control knob SB3; No. 1 terminal of control knob SB3 is connected with the 485-terminal of frequency converter A FP, the 485-terminal of radio receiving transmitting module KYL1 respectively, and No. 2 terminals of control knob SB3 are connected with the 485+ terminal of frequency converter A FP, the 485+ terminal of radio receiving transmitting module KYL1 respectively.The x4 terminal of frequency converter A FP is connected with No. 1 terminal of control knob SB1, and No. 2 terminals of control knob SB1 are connected with No. 2 terminals of control knob SB2, the COM1 terminal of frequency converter A FP respectively; No. 1 terminal of control knob SB2 is connected with the x2 terminal of frequency converter A FP, and the y1 terminal of frequency converter A FP is connected with the other end of high-voltage signal lamp XD.
Externally in loop 30, the L1 terminal of frequency converter is connected with the A1 terminal of exciting transformer LCB, the L2 terminal of frequency converter is connected with the A2 terminal of exciting transformer LCB, the SC1 terminal of exciting transformer LCB is connected with No. 1 end of Reactor banks L, and the SC2 terminal of exciting transformer LCB is connected with the low pressure end of voltage divider DRF, the low pressure end of test specimen and the earth respectively; No. 2 ends of Reactor banks L are connected with the high-pressure side of voltage divider DRF, the test end of test specimen respectively.The double measurement line of capacitive divider is connected with 1, No. 2 terminal of glue benzene two core sockets respectively.
In Fig. 2, KYL1/KYL2 is KYL-1020U type radio receiving transmitting module; QF is C65N32D type threephase switch; AFP is AFP-MS011 type frequency converter; ZL is D-30 type Switching Power Supply; SB1 is A16-11SY type scram button; SB2 is A16-11SY type reset button; The self-lock switch that SB3/SB4/SB5 is comprised of button ZB2BA5C, electric shock module ZB2BZ102C, self-locking module ZB2B821C; XD is AD16-16C type high-voltage signal lamp; YM is ZNR V1011U type voltage dependent resistor (VDR); FD is R1000W03-02 type discharge tube; CZ is glue benzene two core sockets; MT1/MT2 is MT6070iH type touch-screen; JGQ is WBV412S01-0-2 type ac sensor; BC is AC220V/DC5V-2A/DC24V-0.5A type direct-flow storage battery; LCB is WAJLB-7.5kVA/1.5KV/3/6KV type exciting transformer; L is a plurality of WADK-33.75KVA/27KV type Reactor banks; DRF is WAFRC-110KV/1000PF type capacitive divider; Cx is test specimen.
According to Fig. 2, connect electric wiring, combined floodgate air switch, control box energising.Have line traffic control, wireless control mode conversion operations: touch-screen MT1 is wired control model, touch-screen MT2(hand-held) be wireless control mode.Conversion between two kinds of controls is completed by SB3 self-locking button switch.
When 1, control box is switched on, during controlled in wireless end touch-screen energising (SB4 and SB5 close), system is wireless control mode.
2, wireless control mode is converted into wired control model: self-lock switch SB4 and the SB5 of disconnection of wireless control end.Self-lock switch SB3 above closed procedure case.System enters wired control model.
3, wired control model is converted into wireless control mode: self-lock switch SB4 and the SB5 of closed controlled in wireless end.Self-lock switch SB3 above opening operation case.System enters wireless control mode.
4, when having switched control model, need to restart frequency converter, press the reset button on control box.And then test.
5, wireless and to have the touch screen operation step of line traffic control be duplicate.USB interface is the storage of test figure, copy and mouse interface.
6, test procedure
By touch-screen, control frequency converter and complete the tuning of whole series resonant tank, boost, timing, step-down action.And there is arc protection or overcurrent, protection during overvoltage protection is moved.Concrete steps are:
1), after start, before each test, must correctly arrange when time various parameters of test.Click " parameter configuration ", according to instructions, initial frequency is set respectively, stops the parameters such as frequency, starting potential, voltage divider no-load voltage ratio, overvoltage protection, overcurrent protection, arc protection.
2) from dynamic test: when " parameter configuration " sets up, click " from dynamic test " and enter " from dynamic test " interface, click " starting test ", system Automatic-searching tuning-points, screen lower right corner prompting " just tuning, if any abnormal conditions, please click " step-down shutdown " "; Red representative voltage curve, green represents frequency curve, finds after tuning-points, system automatic boosting, lower right corner prompting " just in pressure regulation, if any abnormal conditions, is clicked " step-down shutdown " "; Work as U
resonancewhen voltage is raised to the withstand voltage of test, the timing of system automatic voltage withstanding, lower right corner prompting " just in timing, if any abnormal conditions, please click " step-down shutdown " "; When the time is during pressure-resistant time when arranging, the automatic step-down of system, lower right corner prompting " just in step-down, if any abnormal conditions, please click " step-down shutdown " "; Work as U
resonanceduring voltage step-down 0, lower right corner prompting " test completes, and inquires about test data sheet as wanted, please click " data check " ";
3) manually test: when " test parameters " sets up, click " manually test ", enter " manually test " interface, click " starting test ", as think automatic alignment tuning-points, click " tuning " system Automatic-searching tuning-points, red representative voltage curve, green represents frequency curve, if do not thought automatic alignment tuning-points, first click " up voltage ", by " U
low pressure" be raised to 10V, then click " raising frequency rate " and look for tuning-points, find after tuning-points, click " up voltage "; Work as U
resonancevoltage is raised to the withstand voltage while arranging, and clicks " withstand voltage timing ", and system starts timing.When " pressure-resistant time " then, click " step-down shutdown ", the automatic step-down of system; Work as U
resonanceduring voltage step-down 0, test completes, and inquires about test data sheet as wanted, please click " data check "; Select " LSN ", derive and open file, inquiry data.As in process of the test in case of emergency, click " emergency stop ", after " emergency stop ", click " failure reset ", at manual voltage boosting with manually during frequency modulation, can select voltage steps to regulate and frequency step adjusting according to test situation.
To sum up, by the wireless changing resonant withstand voltage testing device of above-described embodiment, realize wireless frequency conversion resonance vibration pressure-proof test method, mainly comprise the following steps: by the first touch terminal setting, when time various parameters of test, by the first radio receiving transmitting module, send to frequency-variable controller; Frequency-variable controller carries out voltage-withstand test according to the parameter arranging, and when voltage is raised to the withstand voltage of test, automatically carries out withstand voltage timing, when the time is during pressure-resistant time when arranging, and automatic step-down; Automatically record the every data in process of the test, while having tested, generate test report.Further, also comprise step: by USB interface, derive test report.
The present invention utilizes telecontrol engineering to realize the controlled in wireless to variable-frequency power sources by touch-screen, operation touch-screen can be completely separated with test loop, operating personnel can 50 meters with interior seamless to test main frame control, maximum likelihood is guaranteed site operation personnel's security.
In north season in winter, when temperature is in subzero 10 about degree time, touch-screen is with regard to the ubiquity phenomenon that crashes.The present invention under wireless control mode, operating personnel can be in indoor, car etc. environment temperature, the good place of condition complete the operation of test, solved the problem that touch-screen low temperature cannot start, control.
Wiring of the present invention is simple, during site test, only need to connect power supply and high-voltage terminal to test specimen, has avoided the complicacy of site test.
Convenient data processing of the present invention, after test, only need to be connected touch-screen with computer, can, by when time data upload of test is to computer, record and analyze.
The present invention adopts mode wired and that controlled in wireless combines, and the conversion between two kinds of controls is simple, easy to operate.
The present invention utilizes voltage dependent resistor (VDR), discharge tube, has good overcurrent, overvoltage and test product arc protection function.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (9)
1. a wireless changing resonant withstand voltage testing device, is characterized in that, comprises handheld manipulator, frequency-variable controller and external circuit, and between handheld manipulator and frequency-variable controller, by wireless connections, external circuit is connected with frequency-variable controller;
Handheld manipulator comprises the first radio receiving transmitting module, the first touch terminal and accumulator, and accumulator is handheld manipulator power supply, and the first touch terminal receives the test parameters of tester's input, and sends to frequency-variable controller by the first radio receiving transmitting module;
Frequency-variable controller comprises the second radio receiving transmitting module, frequency converter and the second touch terminal, the second radio receiving transmitting module receives the test parameters of the first radio receiving transmitting module transmission and is transmitted to frequency converter, and frequency converter is controlled external circuit according to test parameters and carried out withstand voltage test.
2. device according to claim 1, it is characterized in that, described the first touch terminal is provided with USB interface, outer computer or mobile terminal are connected with this first touch terminal by USB interface, and this first touch terminal sends by the first radio receiving transmitting module by USB interface acceptance test parameters again.
3. device according to claim 1, it is characterized in that, on described the second touch terminal, be provided with USB interface, outer computer or mobile terminal are connected with this second touch terminal by USB interface, and this second touch terminal is by touch-screen or USB interface acceptance test parameters.
4. device according to claim 1, is characterized in that, external circuit comprises exciting transformer, Reactor banks and capacitive divider, and test specimen is connected with Reactor banks exciting transformer.
5. according to the device described in any one in claim 1-4, it is characterized in that, this device also comprises pattern modular converter, is connected with the second touch terminal with handheld manipulator, for controlling this device, enters wired control model or wireless control mode.
6. device according to claim 5, is characterized in that, described the first touch terminal and the second touch terminal are equipped with test report generation module, for generate test report when test completes, and by the electronic signature of touch-screen acceptance test personnel input.
7. device according to claim 6, is characterized in that, passes through Bluetooth protocol transceiving data between described the first transceiver module and the second transceiver module.
8. a wireless frequency conversion resonance vibration pressure-proof test method, the wireless changing resonant withstand voltage testing device based on claim 1, is characterized in that, comprises the following steps:
By the first touch terminal setting, when time various parameters of test, by the first radio receiving transmitting module, send to frequency-variable controller;
Frequency-variable controller carries out voltage-withstand test according to the parameter arranging, and when voltage is raised to the withstand voltage of test, automatically carries out withstand voltage timing, when the time is during pressure-resistant time when arranging, and automatic step-down;
Automatically record the every data in process of the test, while having tested, generate test report.
9. test method according to claim 8, is characterized in that, also comprises step:
By USB interface, derive test report.
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| CN201310513437.0A CN103576062B (en) | 2013-10-25 | 2013-10-25 | Wireless changing resonant withstand voltage testing device and test method thereof |
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| CN201310513437.0A CN103576062B (en) | 2013-10-25 | 2013-10-25 | Wireless changing resonant withstand voltage testing device and test method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108572618A (en) * | 2018-07-11 | 2018-09-25 | 国网江苏省电力有限公司太仓市供电分公司 | A kind of hand-held control terminal |
| CN108594094A (en) * | 2018-07-11 | 2018-09-28 | 国网江苏省电力有限公司太仓市供电分公司 | A kind of light-duty integrated industrial frequency withstand voltage experimental rig |
| CN108594095A (en) * | 2018-07-11 | 2018-09-28 | 国网江苏省电力有限公司太仓市供电分公司 | A kind of testing transformer regulator |
| CN109388703A (en) * | 2018-10-26 | 2019-02-26 | 国网河南省电力公司濮阳供电公司 | High-potting report based on JAVA language automatically generates handheld device and method |
| CN110501596A (en) * | 2019-08-30 | 2019-11-26 | 国网山西省电力公司电力科学研究院 | A kind of wireless control system and method for instruction carriage |
| CN110824345A (en) * | 2019-11-14 | 2020-02-21 | 国网辽宁省电力有限公司电力科学研究院 | Portable 10kV isolating switch alternating current withstand voltage test device based on wireless control technology |
| CN112834888A (en) * | 2020-12-28 | 2021-05-25 | 深圳供电局有限公司 | Test voltage generating device and alternating current withstand voltage test system |
| CN116430187A (en) * | 2023-06-13 | 2023-07-14 | 深圳市微特精密科技股份有限公司 | Automatic pressure-resistant test equipment |
| CN110824345B (en) * | 2019-11-14 | 2024-06-28 | 国网辽宁省电力有限公司电力科学研究院 | Portable 10kV isolating switch alternating-current withstand voltage test device based on wireless control technology |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572618A (en) * | 2018-07-11 | 2018-09-25 | 国网江苏省电力有限公司太仓市供电分公司 | A kind of hand-held control terminal |
| CN108594094A (en) * | 2018-07-11 | 2018-09-28 | 国网江苏省电力有限公司太仓市供电分公司 | A kind of light-duty integrated industrial frequency withstand voltage experimental rig |
| CN108594095A (en) * | 2018-07-11 | 2018-09-28 | 国网江苏省电力有限公司太仓市供电分公司 | A kind of testing transformer regulator |
| CN109388703A (en) * | 2018-10-26 | 2019-02-26 | 国网河南省电力公司濮阳供电公司 | High-potting report based on JAVA language automatically generates handheld device and method |
| CN110501596A (en) * | 2019-08-30 | 2019-11-26 | 国网山西省电力公司电力科学研究院 | A kind of wireless control system and method for instruction carriage |
| CN110824345A (en) * | 2019-11-14 | 2020-02-21 | 国网辽宁省电力有限公司电力科学研究院 | Portable 10kV isolating switch alternating current withstand voltage test device based on wireless control technology |
| CN110824345B (en) * | 2019-11-14 | 2024-06-28 | 国网辽宁省电力有限公司电力科学研究院 | Portable 10kV isolating switch alternating-current withstand voltage test device based on wireless control technology |
| CN112834888A (en) * | 2020-12-28 | 2021-05-25 | 深圳供电局有限公司 | Test voltage generating device and alternating current withstand voltage test system |
| CN116430187A (en) * | 2023-06-13 | 2023-07-14 | 深圳市微特精密科技股份有限公司 | Automatic pressure-resistant test equipment |
| CN116430187B (en) * | 2023-06-13 | 2023-08-15 | 深圳市微特精密科技股份有限公司 | Automatic pressure-resistant test equipment |
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