CN108594095A - A kind of testing transformer regulator - Google Patents
A kind of testing transformer regulator Download PDFInfo
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- CN108594095A CN108594095A CN201810759049.3A CN201810759049A CN108594095A CN 108594095 A CN108594095 A CN 108594095A CN 201810759049 A CN201810759049 A CN 201810759049A CN 108594095 A CN108594095 A CN 108594095A
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- testing transformer
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- handheld terminal
- signal transceiver
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- 238000012360 testing method Methods 0.000 title claims abstract description 101
- 238000012544 monitoring process Methods 0.000 claims abstract description 33
- 238000004891 communication Methods 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000002474 experimental method Methods 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 10
- 230000033228 biological regulation Effects 0.000 claims description 9
- 239000004973 liquid crystal related substance Substances 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The present invention relates to a kind of testing transformer regulators, more particularly to a kind of testing transformer regulator suitable for light-duty integrated industrial frequency withstand voltage experimental rig comprising communication unit, monitoring unit, control unit, Sinusoidal wave pressure regulating device, Switching Power Supply, radiator, master control switch.Control unit is instructed from communication unit, and control Sinusoidal wave pressure regulating device output setting voltage is simultaneously adjusted according to monitoring unit feedback result in real time；Monitoring unit is connected with monitoring display screen, thus by test data real-time display on monitoring display screen.The present invention completes straighforward operation using handheld terminal, realize the separation of pressure regulator and controller, volume just corresponds to the 1/3 of Traditional control case, in addition high-power electric and electronic element and digitalization control method are used, it is highly specialized, weight is only the 1/5 of Same Efficieney automatic coupling voltage regulator, to meet integration and the lightweight needs of new type line frequency Withstand test device.
Description
Technical field
The present invention relates to a kind of testing transformer regulators, more particularly to a kind of to be suitable for light-duty integrated industrial frequency withstand voltage
The testing transformer output voltage regulating device of experimental rig.
Background technology
With the construction of the power large-scale electric generating stations such as nuclear power, thermoelectricity, water power and the research and development of extra high voltage network, modern electric system
The voltage being capable of providing of uniting is higher and higher.Correspondingly, the requirement to the insulation performance of power equipment is also higher and higher, once
There is the generation that Electric Power Equipment Insulation performance deficiency this may result in major accident.Therefore, before power equipment comes into operation,
Stringent pressure test must be carried out to it.
Withstand test device can check dangerous larger central hot water supply system, to judging that can power equipment continue to participate in
Operation has decisive role, therefore is widely used in and carries out assigned voltage to various electric equipment products, electrical equipment, insulating materials etc.
Under dielectric(al) test find, by the insulation defect of test products, to weigh the energy of overvoltage to examine the dielectric level of product
Power.
When to needing the object for detecting its insulation performance to carry out voltage endurance capability test, need through special industrial frequency withstand voltage
Experimental rig applies voltage to the object, developed such industrial frequency withstand voltage experimental rig and has obtained extensive utilization.It passes
Industrial frequency withstand voltage experimental rig of uniting includes testing transformer, regulator two parts, and wherein regulator is mostly autocoupling type pressure regulation control
Case processed, size, weight are excessive, it is difficult to meet integration and the lightweight requirements of new type line frequency Withstand test device, and exist such as
Lower problem：Regulator and testing transformer are independent, need to carry respectively every time and rewiring, reduce test efficiency；Experiment
Personnel need to keep crouched position when operating regulator, expend muscle power and be unfavorable for observing periphery situation；It is lacked in operating process
Few safety prompt function, it is poor to the security role of periphery personnel.
Invention content
In view of the above-mentioned problems, the present invention is adopted the following technical scheme that solve the above problems.
A specific implementation mode according to the present invention, provides a kind of testing transformer regulator comprising communication
Unit, monitoring unit, control unit, Sinusoidal wave pressure regulating device, Switching Power Supply, master control switch.
Testing transformer regulator according to an embodiment of the invention, it is suitable for light-duty integrated industrial frequency withstand voltages
Experimental rig, the light-duty integrated industrial frequency withstand voltage experimental rig includes cart, the work box that is set on the cart, setting
In in the work box for provides the electric testing transformer of experiment, the voltage output end being connected on the testing transformer,
It is set to the warning lamp that the side of the voltage output end is used to serve as warning；Monitoring display is provided on the work box
Screen, the storage box for storing power cord and handheld terminal is provided in the work box, is provided on the work box
Experimental rig signal transceiver is connected with the emergency stop switch for preventing from surprisingly occurring on the power cord；The testing transformer tune
Pressure device is set to the side of the testing transformer as the control device of the light-duty integrated industrial frequency withstand voltage experimental rig
For Control experiment transformer output current and voltage.
Testing transformer regulator according to an embodiment of the invention, wherein the light-duty integrated power frequency is resistance to
Compression testing device is provided with includes hand-held end with the matched handheld terminal of experimental rig signal transceiver, the handheld terminal
End signal transceiver, liquid crystal display, opening button, switch knob, load button, PLC chip, the handheld terminal signal transmitting and receiving
Device, liquid crystal display, opening button, switch knob, load button group are connect with the PLC chip respectively, the opening button and conjunction
Lock button is for controlling whether Withstand test device works, and the load button is for sending out instruction to adjust the experiment transformation
The output voltage of device and the numerical value of electric current, the handheld terminal signal transceiver for send by press the opening button,
The command signal that is sent out by handheld terminal after switch knob and load button group and to receive experimental rig signal transceiver anti-
The empirical value of feedback is both provided with buzzer and warning lamp on the handheld terminal and experimental rig, when testing transformer electricity
Pressure output end is when having High voltage output, and buzzer sends out intermittent buzzer (such as very brief and " drop-drop " repeatedly sound), companion
There is warning lamp (such as red) flicker, reminds surrounding people's device to charge, Keep off；When voltage output end is down to safe electricity
After pressure, warning lamp extinguishes, and buzzer stopping pipes；When exception occurs in the working condition of experimental rig or is likely to occur abnormal
When tendency, buzzer sends out long song (such as the sound of lasting " drop --- "), and warning lamp (such as red) is always on, and reminds behaviour
Make personnel inspection experimental rig and test connection, is confirmed whether there is the potential risk for jeopardizing the person or equipment safety.
Testing transformer regulator according to an embodiment of the invention, wherein the communication unit is instructed,
The work of the Sinusoidal wave pressure regulating device is controlled to export satisfactory voltage and current, and according to the feedback result of monitoring unit
It is adjusted in real time, to ensure control errors in engineering allowable range.
Testing transformer regulator according to an embodiment of the invention, wherein the monitoring display screen with it is described
Monitoring unit is connected, to test obtained data real-time display on the monitoring display screen.
Testing transformer regulator according to an embodiment of the invention, wherein the communication unit and the hand
It holds terminal signaling transceiver and the experimental rig signal transceiver is wirelessly connected so as to by the handheld terminal signal
Transceiver sends out instruction to the experimental rig signal transceiver, and the work of described control unit is controlled by the instruction, to
The pressure regulation process of Sinusoidal wave pressure regulating device described in straighforward operation.
Testing transformer regulator according to an embodiment of the invention, wherein the Sinusoidal wave pressure regulating device passes through
Power cord with emergency stop switch and master control switch access 220V electric mains Uin, control input voltage U is switched by master controlin's
It is switched on and off, and its output end U is controlled by described control unitoutAmplitude, realize the continuously adjustable of 0~250V voltages,
The ends a and the ends x of the external testing transformer low pressure winding of output end.
Testing transformer regulator according to an embodiment of the invention, wherein the monitoring unit becomes with experiment
The measurement winding a of depressordAnd xdEnd is connected.
Testing transformer regulator according to an embodiment of the invention, wherein the testing transformer pressure regulation dress
It sets and is additionally provided with radiator.
Testing transformer regulator according to an embodiment of the invention, wherein the radiator is fan.
The testing transformer regulator of the present invention is specifically in industrial frequency withstand voltage experimental rig, especially light-duty integration
Industrial frequency withstand voltage experimental rig and develop, volume just corresponds to the 1/3 of Traditional control case, in addition use high-power electric and electronic element
And digitalization control method, highly specialized, weight is only the 1/5 of Same Efficieney automatic coupling voltage regulator, to meet light-duty work
The integration of frequency Withstand test device needs.
Description of the drawings
Fig. 1 is the light-duty integrated industrial frequency withstand voltage experimental rig being used cooperatively with the testing transformer regulator of the present invention
Schematic diagram；
Fig. 2 is the internal structure schematic diagram of the testing transformer adjusting apparatus of the present invention.
Reference sign：
1 cart；
2 testing transformers；
3 testing transformer regulators；
4 storage boxes；
5 ground terminals；
6 warning lamps；
7 experimental rig signal transceivers；
8 monitoring display screens；
9 handheld terminals；
10 handheld terminal signal transceivers；
11 emergency stop switch；
12 buzzers；
13 work boxs；
14 voltage output ends；
15 power cords；
16 liquid crystal displays；
17 opening buttons；
18 switch knobs；
19 load buttons.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
First refering to fig. 2, testing transformer regulator of the invention include communication unit, monitoring unit, control unit,
Sinusoidal wave pressure regulating device, Switching Power Supply, radiator, master control switch.Wherein, Switching Power Supply herein refers to a kind of dedicated electronics
Element, input terminal are the 220V electric mains accessed by power cord, and the direct current of output end 5V, 12V equal-specification is used for
Required DC voltage, which is provided, to other electronic components ensures that its normal work, the foot on power cord step on emergency stop switch and electrification
The effect of source switch.
Further as shown in Fig. 1, testing transformer regulator of the invention is suitable for light-duty one as shown in Figure 2
Chemical industry frequency Withstand test device, which includes cart 1, the work box 13 that is set on cart 1, is set to work box 13
The interior testing transformer 2 for providing experiment electricity, testing transformer regulator 3 of the invention are then set to as control device
The side of testing transformer 2 is used for the output current and voltage of Control experiment transformer 2.
The light-duty integrated industrial frequency withstand voltage experimental rig further includes the experimental rig signal transceiver 7 being set on work box
With the handheld terminal 9 to match with the experimental rig signal transceiver 7.Voltage output end 14 is connected on testing transformer 2,
It is tested for product to be measured to be connected thereto；The warning lamp 6 for serving as warning is additionally provided on work box 13；Examination
It tests transformer regulation 3 to be also disposed in work box 13, with monitoring display screen 8, the experiment dress for being set to work box side
The connection of signal transceiver 7 is set, the monitoring data of test fixture, experiment dress can be shown to operating personnel by monitoring display screen 8 as a result,
Setting signal transceiver 7 can be with 9 receiving and transmitting signal of handheld terminal for realizing straighforward operation.It is additionally provided in work box 13 for depositing
The storage box 4 of discharge source line 15 and handheld terminal 9 is connected to the emergency stop switch 11 for preventing contingency from occurring on power supply 15.
It is received including handheld terminal signal with the above-mentioned light-duty integrated matching used handheld terminal 9 of industrial frequency withstand voltage experimental rig
Send out device 10, liquid crystal display 16, opening button 17 and switch knob 18, load button 19, PLC chip.Handheld terminal signal transceiver
10, liquid crystal display 16, opening button 17 and switch knob 18, load button 19 are connect with PLC chip respectively, wherein opening button
17 and switch knob 18 for controlling whether Withstand test device works, load button 19 is for adjusting the defeated of testing transformer 2
Go out the numerical value of voltage and current, handheld terminal signal transceiver 10 is used to send the command signal that handheld terminal 9 is sent out and connects
The signal that tested experiment device signal transceiver 7 is sent out, to obtain empirical value.
It is further preferred that being both provided with buzzer on handheld terminal 9 and light-duty integrated industrial frequency withstand voltage experimental rig
12 and warning lamp 6, when testing transformer voltage output end 14 has High voltage output, buzzer 12 sends out the intermittence of " drop-drop "
Buzzer is flickered with red warning lamp 6, reminds surrounding people's device to charge, Keep off；When voltage output end 14 is down to
After safe voltage, warning lamp 6 extinguishes, and the stopping of buzzer 12 pipes.Once there is exception or has in the working condition of experimental rig
When there is the tendency of unusual condition, Chang Mingsheng and warning lamp 6 that buzzer 12 sends out " drop --- " are always on, and remind operating personnel's inspection
Experimental rig and test connection are looked into, is confirmed whether there is the potential risk for jeopardizing the person or equipment safety.
The control unit of the testing transformer regulator of the present invention is instructed from the communication unit, and control is described just
The work of string wave pressure regulator is adjusted with exporting satisfactory voltage and current according to the feedback result of monitoring unit in real time
It is whole, to ensure control errors in engineering allowable range.Its monitoring unit is connected with monitoring display screen 8, thus will be from control
The data that unit processed obtains are shown on monitoring display screen 8.Communication unit and handheld terminal signal transceiver 10 and experimental rig
Signal transceiver 7 is wirelessly connected, so as to be sent out to experimental rig signal transceiver 7 by handheld terminal signal transceiver 10
Instruction controls the work of described control unit by the instruction, to the pressure regulation process of Sinusoidal wave pressure regulating device described in straighforward operation.
It is provided with communication cable interface on testing transformer regulator 3 and handheld terminal 9, realizes wired and wireless two kinds of operation sides
The compatibility of formula, that is, both line traffic control can have been carried out to experiment process by special communication cable, signal transceiver pair can also be passed through
Experiment process carries out wireless control.
The Sinusoidal wave pressure regulating device of the testing transformer regulator of the present invention passes through power cord and master control with emergency stop switch
Switch access 220V electric mains Uin, control input voltage U is switched by master controlinBe switched on and off, and pass through control unit
Control its output end UoutAmplitude, realize the continuously adjustable of 0~250V voltages, the external testing transformer low pressure winding of output end
The ends a and the ends x.Monitoring unit then with the measurement winding a of testing transformerdAnd xdEnd is connected.Wherein, the ends a and the ends x respectively refer to
The both ends of testing transformer low pressure winding, can approximation be interpreted as a termination firewires, x terminal connecting zero lines, in low pressure winding ax making alives,
High pressure is induced according to a certain percentage between high-voltage winding A, X；The effect of regulator is presented as that access is constant
220V alternating currents, output is any voltage value between 0~250V, i.e., in the case where input is always 220V, pressure regulation dress
50V, 60V, 100V etc. can be adjusted to as needed by setting output end, further through testing transformer in high-voltage winding (voltage output
Between end and the earth) the different grades of high pressure such as 10000V, 12000V, 20000V is induced, to be applied to different test items
On to test insulation performance.
In a further preferred embodiment, heat dissipation is additionally provided with inside testing transformer regulator of the invention
Device can be, but not limited to avoid apparatus overheat, the radiator as fan.
When the light-duty integrated industrial frequency withstand voltage experimental rig using the testing transformer regulator for being mounted with the present invention come
When testing the insulation performance of certain test product, test item is connect by conducting wire with voltage output end 14, the input of handheld terminal 9 is passed through
After button 19 regulates the data such as voltage and current, switch knob 18 is clicked, handheld terminal 9 passes through handheld terminal signal transceiver
10 or special communication cable transmit a signal to the testing transformer regulator 3 of experimental rig, testing transformer regulator 3
Control unit the signal received is analyzed and determined, connect master control switch, according to regulation rate of pressure rise automatically adjust
The voltage of testing transformer output end 14 simultaneously sends test item to, DATA REASONING is carried out to it, and will monitor by communication unit
As a result it is sent to handheld terminal signal transceiver 10, to which operating personnel can be monitored from the liquid crystal display 16 of handheld terminal 9
As a result.In addition, test result directly can also be shown in monitoring display screen 8 by the monitoring unit of testing transformer regulator 3
On, it, can also be according to monitoring display screen 8 to which operator not only can see test result at a distance by handheld terminal 9
Indicated value further confirms that real-time detector data and device electrification situation, ensures the person and equipment when testing crew subsequent operation
Safety.
In case of accident, operating personnel can jam on emergency stop switch 11, promptly stop experimental rig, with prevent the state of affairs into
One step deteriorates.If all going well progress, it can automatically delay in pressurization completion output voltage and be reduced to zero, observation monitoring is shown
After display screen 8 further confirms that no High voltage output, clicks opening button 17 and disconnect master control switch, by power cord connector from commercial power socket
Upper removal, thorough open test power supply, it is ensured that testing transformer 2 stops output.
The foregoing is merely presently preferred embodiments of the present invention, practical range not for the purpose of limiting the invention；If do not taken off
It from the spirit and scope of the present invention, modifies or equivalently replaces the present invention, should all cover in the claims in the present invention
In protection domain.
Claims (10)
1. a kind of testing transformer regulator, which is characterized in that it includes communication unit, monitoring unit, control unit, sine
Wave pressure regulator, Switching Power Supply, radiator, master control switch.
2. testing transformer regulator according to claim 1, which is characterized in that it is suitable for light-duty integrated power frequencies
Withstand test device, the light-duty integrated industrial frequency withstand voltage experimental rig includes cart, the work box that is set on the cart,
It is set in the work box for the testing transformer for providing experiment electricity, the voltage output being connected on the testing transformer
The warning lamp for holding, being set to the side of the voltage output end to be used to serve as warning,
It is provided with monitoring display screen on the work box, is provided in the work box for storing power cord and holding eventually
The storage box at end is provided with experimental rig signal transceiver on the work box, and being connected on the power cord prevents accident
The emergency stop switch of generation,
The testing transformer regulator is set to as the control device of the light-duty integrated industrial frequency withstand voltage experimental rig
The side of the testing transformer is used for Control experiment transformer output current and voltage.
3. testing transformer regulator according to claim 2, which is characterized in that the light-duty integrated industrial frequency withstand voltage
Experimental rig be provided with the matched handheld terminal of experimental rig signal transceiver, the handheld terminal includes handheld terminal
Signal transceiver, liquid crystal display, opening button, switch knob, load button, PLC chip, the handheld terminal signal transceiver,
Liquid crystal display, opening button, switch knob, load button group are connect with the PLC chip respectively, and the opening button and combined floodgate are pressed
Button is for controlling whether Withstand test device works, and the load button is for sending out instruction to adjust the testing transformer
The numerical value of output voltage and electric current, the handheld terminal signal transceiver is for sending by pressing the opening button, combined floodgate
The command signal that is sent out by handheld terminal after button and load button group and receive experimental rig signal transceiver feedback
Empirical value is both provided with buzzer and warning lamp on the handheld terminal and experimental rig, when the testing transformer
When the voltage output end has High voltage output, buzzer sends out intermittent buzzer, the warning lamp flicker；When the voltage is defeated
After outlet is down to safe voltage, the warning lamp extinguishes, and the buzzer stopping pipes；
When the working condition of the experimental rig exception occurs or is likely to occur abnormal, the buzzer sends out long song,
The warning lamp length is bright, when there is exception or is likely to occur abnormal in the working condition of the experimental rig, the buzzer
Long song is sent out, and warning lamp length is bright.
4. testing transformer regulator according to claim 2 or 3, which is characterized in that described control unit is from described
Communication unit is instructed, and controls the work of the Sinusoidal wave pressure regulating device to export satisfactory voltage and current, and according to
The feedback result of monitoring unit is adjusted in real time, to ensure control errors in engineering allowable range.
5. testing transformer regulator according to claim 2 or 3, which is characterized in that the monitoring display screen and institute
It states monitoring unit to be connected, to which obtained data real-time display will be tested on the monitoring display screen.
6. testing transformer regulator according to claim 2 or 3, which is characterized in that the communication unit with it is described
Handheld terminal signal transceiver and the experimental rig signal transceiver are wirelessly connected so as to be believed by the handheld terminal
Number transceiver sends out instruction to the experimental rig signal transceiver, and the work of described control unit is controlled by the instruction, from
And the pressure regulation process of Sinusoidal wave pressure regulating device described in straighforward operation.
7. testing transformer regulator according to claim 2 or 3, which is characterized in that the Sinusoidal wave pressure regulating device is logical
Cross the power cord with emergency stop switch and master control switch access 220V electric mains Uin, control input voltage U is switched by master controlin
Be switched on and off, and its output end U is controlled by described control unitoutAmplitude, realize the continuous of 0~250V voltages can
It adjusts, the ends a and the ends x of the external testing transformer low pressure winding of output end.
8. testing transformer regulator according to claim 2 or 3, which is characterized in that the monitoring unit and experiment
The measurement winding a of transformerdAnd xdEnd is connected.
9. testing transformer regulator according to claim 2 or 3, which is characterized in that the testing transformer pressure regulation
Device is additionally provided with radiator.
10. testing transformer regulator according to claim 9, which is characterized in that the radiator is fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810759049.3A CN108594095A (en) | 2018-07-11 | 2018-07-11 | A kind of testing transformer regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810759049.3A CN108594095A (en) | 2018-07-11 | 2018-07-11 | A kind of testing transformer regulator |
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| Publication Number | Publication Date |
|---|---|
| CN108594095A true CN108594095A (en) | 2018-09-28 |
Family
ID=63615298
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810759049.3A Pending CN108594095A (en) | 2018-07-11 | 2018-07-11 | A kind of testing transformer regulator |
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| CN (1) | CN108594095A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112881873A (en) * | 2021-01-13 | 2021-06-01 | 中车青岛四方机车车辆股份有限公司 | Pressure resistance test system and test method |
| CN114185836A (en) * | 2020-09-15 | 2022-03-15 | 阿里巴巴集团控股有限公司 | System on chip and method for adjusting voltage and frequency |
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