CN207067319U - A kind of industrial frequency withstand voltage experimental rig - Google Patents
A kind of industrial frequency withstand voltage experimental rig Download PDFInfo
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- CN207067319U CN207067319U CN201720295711.5U CN201720295711U CN207067319U CN 207067319 U CN207067319 U CN 207067319U CN 201720295711 U CN201720295711 U CN 201720295711U CN 207067319 U CN207067319 U CN 207067319U
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Abstract
The utility model provides a kind of industrial frequency withstand voltage experimental rig, includes the adjustable exciting transformer of transformation ratio, the adjustable reactor of inductance value and the capacitive divider of frequency conversion voltage adjusting power supply, primary side and the connection of frequency conversion voltage adjusting power output end；The reactor is connected to the connection end ground connection of the secondary side of exciting transformer, capacitive divider and exciting transformer after being connected with the capacitive divider；Product to be tested is parallel to capacitive divider both ends；The capacitive divider includes the high voltage arm capacitor being sequentially connected in series and low-voltage arm electric capacity, the hot end of the low-voltage arm electric capacity are connected with the voltage measurement port of frequency conversion voltage adjusting power supply.The device volume is small, in light weight, can meet the test requirements document of high voltage low current test item, can also meet the test requirements document of the big electric test item of relatively low voltage.
Description
Technical field
A kind of electric force test device is the utility model is related to, more particularly to a kind of industrial frequency withstand voltage experimental rig.
Background technology
Industrial frequency withstand voltage is tested for detecting test item to the elevated insulation ability to bear of power-frequency voltage, traditional industrial frequency withstand voltage
Testing equipment mainly meets the power frequency high voltage of test requirements document using transformer output, when test item capacitance is larger or experiment electricity
When pressure request is higher, higher is required to the power supply capacity of experimental rig, and experimental rig volume is big, weight is high, it has not been convenient to carries,
Using flexible is poor.
Although in the prior art there is also some series resonance test devices, it is low that these devices are suitable only for progress high voltage
The experiment of electric current, be not suitable for, current requirements larger test item relatively low to some voltage requests（Such as overlength bus duct）Enter
Row industrial frequency withstand voltage is tested.
It can be seen that prior art could be improved and improve.
The content of the invention
In view of in place of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of industrial frequency withstand voltage experiment dress
Put, the device volume is small, in light weight, can meet the test requirements document of high voltage low current test item, can also meet that low-voltage is big
The test requirements document of electric current test item.
In order to achieve the above object, the utility model takes following technical scheme：
A kind of industrial frequency withstand voltage experimental rig, including frequency conversion voltage adjusting power supply, primary side and frequency conversion voltage adjusting power output end connect
The adjustable exciting transformer of transformation ratio, be parallel to the capacitive divider of the exciting transformer secondary side, the electric capacity point of connecting
The adjustable reactor of inductance value between depressor and exciting transformer；The termination that the capacitive divider is not connected with reactor
Ground；The capacitive divider includes high voltage arm capacitor and the low-voltage arm electric capacity being arranged in series, the hot end of the low-voltage arm electric capacity
It is connected with the voltage measurement port of frequency conversion voltage adjusting power supply.
Described industrial frequency withstand voltage experimental rig, wherein, the exciting transformer has at least two secondary coils, by changing
Become the mode of connection, the secondary coil can switch between series connection and both of which in parallel.
Described industrial frequency withstand voltage experimental rig, wherein, the reactor has at least two reactance, by changing wiring side
Formula, the reactance can switch between series connection and both of which in parallel.
Described industrial frequency withstand voltage experimental rig, in addition to a compensating electric capacity, the compensating electric capacity are parallel to the electric capacity point
Depressor both ends.
Described industrial frequency withstand voltage experimental rig, wherein, the earthing of casing of the frequency conversion voltage adjusting power supply.
Described industrial frequency withstand voltage experimental rig, in addition to be series at short between AC power and the frequency conversion voltage adjusting power supply
Road protection switch.
Beneficial effect：
The utility model provides a kind of industrial frequency withstand voltage experimental rig, including frequency conversion voltage adjusting power supply, primary side with becoming frequency modulation
The adjustable exciting transformer of transformation ratio, the adjustable reactor of inductance value and the capacitive divider of piezoelectricity source output terminal connection；Institute
State the secondary side that exciting transformer is connected to after reactor is connected with the capacitive divider, capacitive divider and exciting transformer
Connection end ground connection；Product to be tested is parallel to capacitive divider both ends；The capacitive divider includes the high-voltage arm being sequentially connected in series
Electric capacity and low-voltage arm electric capacity, the hot end of the low-voltage arm electric capacity are connected with the voltage measurement port of frequency conversion voltage adjusting power supply.The dress
Small volume, in light weight is put, the test requirements document of high voltage low current test item can be met, can also meet the big electricity of relatively low voltage
The test requirements document of test item.
Brief description of the drawings
Fig. 1 is the circuit diagram of industrial frequency withstand voltage experimental rig provided by the utility model.
Fig. 2 is the schematic diagram of exciting transformer in industrial frequency withstand voltage experimental rig provided by the utility model, is shown in figure
It is the series model of secondary coil.
Fig. 3 is the schematic diagram of exciting transformer in industrial frequency withstand voltage experimental rig provided by the utility model, is shown in figure
It is the paralleling model of secondary coil.
Fig. 4 is the schematic diagram of reactor in industrial frequency withstand voltage experimental rig provided by the utility model, and electricity is shown in figure
Anti- series model.
Fig. 5 is the schematic diagram of reactor in industrial frequency withstand voltage experimental rig provided by the utility model, and electricity is shown in figure
Anti- paralleling model.
Embodiment
The utility model provides a kind of industrial frequency withstand voltage experimental rig, to make the purpose of this utility model, technical scheme and effect
Fruit is clearer, clear and definite, and the utility model is further described the embodiment that develops simultaneously referring to the drawings.It should be appreciated that this
The specific embodiment of place description only to explain the utility model, is not used to limit the utility model.
Referring to Fig. 1, the utility model provides a kind of industrial frequency withstand voltage experimental rig, including frequency conversion voltage adjusting power supply 1, primary side
The adjustable exciting transformer 2 of transformation ratio that is connected with frequency conversion voltage adjusting power output end, it is parallel to the exciting transformer secondary side
Capacitive divider 4, the adjustable reactor 3 of inductance value connected between the capacitive divider and exciting transformer；The electric capacity
One end ground connection that divider 4 is not connected with reactor 3；The capacitive divider 4 includes the He of high voltage arm capacitor 41 being arranged in series
Low-voltage arm electric capacity 42, the hot end of the low-voltage arm electric capacity are connected with the voltage measurement port of frequency conversion voltage adjusting power supply 1.Preferably,
The device is provided with a control cabinet（It is not drawn into figure）, the frequency modulation variable-voltage power supply, capacitive divider are arranged at the control cabinet
It is interior.
During experiment, by objects such as device to be tested, equipment（Hereinafter referred to as test item）It is parallel to the capacitive divider
Both ends, the input of frequency conversion voltage adjusting power supply is connected to 220V or 380V AC power, and will according to the experiment of test item
The output frequency of adjustment frequency conversion voltage adjusting power supply and the inductance value of voltage, the transformation ratio of exciting transformer and reactor are asked, makes electricity
Road is in resonant condition, and now the magnitude of voltage at test item both ends is Q times of exciting transformer output voltage（Q is above-mentioned excitation-transformation variable
The quality factor for the resonance circuit that the parts such as depressor, varactor capacitance divider are formed）, so as to reduce power supply and transformer
Requirement, reduce equipment volume and weight.Again because supply frequency, transformer transformation ratio and reactor inductance amount are adjustable, make
The scope of application of the experimental provision is wider, disclosure satisfy that the test requirements document of different test items.
Further, the exciting transformer 2 has at least two secondary coils, described secondary by changing the mode of connection
Level coil can switch between series connection and both of which in parallel.By taking two secondary coils as an example, Fig. 2 and Fig. 3, excitation are referred to
The secondary coil of transformer 2 includes the first secondary coil 21 and second level coil 22, and the first secondary coil has the first terminals
The binding post 212 of son 211 and second, second subprime coil have the 3rd binding post 221 and the 4th binding post 222.Work as quilt
When survey product require big voltage and smaller current（Such as high-tension transformer, high-voltage board, cable）, the second binding post 211 and
The short circuit of three binding post 221, with the first binding post 211 and the 4th binding post 222 for lead-out terminal, now, secondary coil
For series model, transformation is bigger, and output voltage is also larger.When tested product require that voltage is relatively small and electric current is relatively large
（Such as overlength bus duct）, the first binding post and the 3rd binding post short circuit, the second binding post and the 4th binding post
Short circuit, using the first binding post and the 4th binding post as lead-out terminal, now coil is simultaneously series model, and transformation is smaller,
Output voltage is relatively low, while secondary coil in parallel can provide bigger electric current.
In order to improve the applicability of industrial frequency withstand voltage experimental rig, the reactor 3 has at least two reactance, passes through change
The mode of connection, the reactance can switch between series connection and both of which in parallel.By taking two reactance as an example, refer to Fig. 4 and
Fig. 5, reactor 3 include the first reactance 31 and the second reactance 32, and the first reactance has first interface 311 and second interface 312, the
Two reactance have the 3rd interface 321 and the 4th interface 322, when needing big reactance, the interface 321 of second interface 312 and the 3rd
Short circuit, it is input with first interface 311, with the 4th interface 322 for output end, now, reactance is series model.When need compared with
During low reactance, first interface and the 3rd interface short circuit, second interface and the 4th interface short circuit, using first interface as input
End, using the 4th interface as output end, now, reactance is paralleling model.
Preferably, referring to Fig. 1, described industrial frequency withstand voltage experimental rig, in addition to a compensating electric capacity 5, the compensation are electric
Appearance is parallel to the both ends of capacitive divider 4.Compensating electric capacity can make the frequency of pressure test system more stable.
In the present embodiment, the earthing of casing of the frequency conversion voltage adjusting power supply 1, the security of testing equipment is improved.
In addition, referring to Fig. 1, described industrial frequency withstand voltage experimental rig, in addition to it is series at AC power and the frequency conversion
Protective switch of the short circuit 6 between voltage controller power source 1.When testing equipment short circuit, protective switch of the short circuit can cut off the electricity supply in time, prevent
The only damage of equipment.
In summary, the utility model provides a kind of industrial frequency withstand voltage experimental rig, including frequency conversion voltage adjusting power supply, one
The adjustable exciting transformer of transformation ratio that secondary side is connected with frequency conversion voltage adjusting power output end, the adjustable reactor of inductance value and
Capacitive divider；The reactor is connected to the secondary side of exciting transformer, capacitance partial pressure after being connected with the capacitive divider
The connection end of device and exciting transformer is grounded；Product to be tested is parallel to capacitive divider both ends；The capacitive divider include according to
The high voltage arm capacitor and low-voltage arm electric capacity of secondary series connection, the hot end of the low-voltage arm electric capacity and the voltage measurement of frequency conversion voltage adjusting power supply
Port connects.The device volume is small, in light weight, can meet the test requirements document of high voltage low current test item, can also meet phase
The test requirements document of electric test item big to low voltage.In addition, exciting transformer and reactor are respectively provided with series connection and two kinds of works in parallel
Operation mode, improve the applicability of experimental rig.
It is understood that for those of ordinary skills, can according to the technical solution of the utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement should all belong to appended by the utility model
Scope of the claims.
Claims (3)
1. a kind of industrial frequency withstand voltage experimental rig, it is characterised in that defeated including frequency conversion voltage adjusting power supply, primary side and frequency conversion voltage adjusting power supply
Go out to hold the adjustable exciting transformer of transformation ratio of connection, the capacitive divider for being parallel to the exciting transformer secondary side, series connection
The adjustable reactor of inductance value between the capacitive divider and exciting transformer；The capacitive divider is not connected with reactor
One end ground connection；The capacitive divider includes high voltage arm capacitor and the low-voltage arm electric capacity being arranged in series, the low-voltage arm electric capacity
Hot end is connected with the voltage measurement port of frequency conversion voltage adjusting power supply；
The secondary coil of exciting transformer includes the first secondary coil and second level coil, and the first secondary coil has the first wiring
Terminal and the second binding post, second subprime coil have the 3rd binding post and the 4th binding post；By changing wiring side
Formula, the secondary coil can switch between series connection and both of which in parallel；
Reactor includes the first reactance and the second reactance, and the first reactance has first interface and second interface, and the second reactance has
3rd interface and the 4th interface, by changing the mode of connection, the reactance can switch between series connection and both of which in parallel；
The industrial frequency withstand voltage experimental rig also includes a compensating electric capacity, and the compensating electric capacity is parallel to the capacitive divider two
End.
2. industrial frequency withstand voltage experimental rig according to claim 1, it is characterised in that the shell of the frequency conversion voltage adjusting power supply connects
Ground.
3. industrial frequency withstand voltage experimental rig according to claim 1, it is characterised in that also include being series at AC power and institute
State the protective switch of the short circuit between frequency conversion voltage adjusting power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720295711.5U CN207067319U (en) | 2017-03-24 | 2017-03-24 | A kind of industrial frequency withstand voltage experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720295711.5U CN207067319U (en) | 2017-03-24 | 2017-03-24 | A kind of industrial frequency withstand voltage experimental rig |
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| Publication Number | Publication Date |
|---|---|
| CN207067319U true CN207067319U (en) | 2018-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720295711.5U Active CN207067319U (en) | 2017-03-24 | 2017-03-24 | A kind of industrial frequency withstand voltage experimental rig |
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| Country | Link |
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| CN (1) | CN207067319U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231555A (en) * | 2019-07-16 | 2019-09-13 | 显利(珠海)造船有限公司 | Pressure-resistant Insulation Test control circuit and pressure-resistant Insulation Test equipment |
| CN115236503A (en) * | 2022-07-27 | 2022-10-25 | 西安交通大学 | Loop and method for dynamic insulation test of power frequency withstand voltage of switch |
-
2017
- 2017-03-24 CN CN201720295711.5U patent/CN207067319U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231555A (en) * | 2019-07-16 | 2019-09-13 | 显利(珠海)造船有限公司 | Pressure-resistant Insulation Test control circuit and pressure-resistant Insulation Test equipment |
| CN115236503A (en) * | 2022-07-27 | 2022-10-25 | 西安交通大学 | Loop and method for dynamic insulation test of power frequency withstand voltage of switch |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190304 Address after: 528200 Guicheng 1701 street, No. 33, Ji Hua Dong Road, Guicheng District, Foshan, Nanhai, Guangdong Patentee after: Guangdong Weiheng Power Transmission and Distribution Co., Ltd. Address before: 528200 6/F, 2 Building, No. 33 Jihua East Road, Guicheng Street, Nanhai District, Foshan City, Guangdong Province Patentee before: GUANGDONG HONGLIANG DETECTION TECHNOLOGY CO., LTD. |