CN106970309A - A kind of capacitor destructive testing apparatus and method - Google Patents
A kind of capacitor destructive testing apparatus and method Download PDFInfo
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- CN106970309A CN106970309A CN201710303013.XA CN201710303013A CN106970309A CN 106970309 A CN106970309 A CN 106970309A CN 201710303013 A CN201710303013 A CN 201710303013A CN 106970309 A CN106970309 A CN 106970309A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 80
- 238000009658 destructive testing Methods 0.000 title claims description 11
- 238000000034 method Methods 0.000 title claims description 6
- 238000005070 sampling Methods 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 9
- 230000005611 electricity Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010998 test method Methods 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
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
Abstract
The application provides a kind of Test Device of Capacitor Pulse Voltage, occurs circuit module, control circuit module, PLC module and display module comprising mains-supplied circuit module, pulse voltage；It is controlled by using PLC module, realize automation switching control, the capacitor test parameters demand of different capabilities scope is met, directly contacting for high pressure port and human body is solved, the technical problem for the infringement that equipment is likely to result in experimenter is prevented to greatest extent.
Description
Technical field：
The present invention relates to component detection technique field, more particularly to a kind of capacitor for ac motor destructive testing dress
Put.
Background technology：
Capacitor for ac motor is widely used in the startup and operating of ac motor, with small volume, price be low, weight
Gently, the features such as small, self-healing effect is good is lost.Among the use of capacitor, when its a certain element insulate journey in certain circumstances
Degree declines, and will produce larger heat, and internal pressure increase makes capacitor case dilatancy, or even blast.Therefore according to GB/
The class of safety protection of capacitor is defined in T3667.1-2016, the capacitor of different materials need to be met pacifies specified in standard
Full protection grade, carries out destructive testing under prescribed test conditions, and capacitor is just can guarantee that when in use by the experiment
It is safe.
Fig. 1 shows the test network according to specified in regulation S3 class of safety protection in GB/T3667-2015.But it is existing
Some tests only limit the subject capacitor Cx capacity that direct current decoupling capacitor C capacity cannot be less than 10 times, and such as Cx capacity is big
It is small that the direct current decoupling capacitor C capacity is 10uf-800uf when being 1uf-80uf, but be due to subject capacitor Cx capacity not
Know, therefore when selecting the direct current decoupling capacitor C capacity, to be on the safe side, select larger capacity to meet as far as possible
Experiment needs；But the high-capacity direct current decoupling capacitor C brings a side effect, i.e., when the direct current decoupling capacitor holds
Amount is larger and when fixing（Subject condenser capacity such as more than 15 times）, because direct current decoupling capacitor in the loop can be to sample
Discharged, if the insulativity reduction because of subject capacitor sample in itself, it will make to increase by the electric current for being tested capacitor moment
Greatly, heat steeply rises, internal expansion, and causes capacitor the phenomenon such as on fire from explosion occur, and the phenomenon be not construed as by
Examination capacitor is not inconsistent the regulation in standardization.
The content of the invention：
The test method that present invention design is superimposed using alternating current-direct current, targetedly enters to capacitor for ac motor destructive testing
Row checking, the exact parameters of reliability are provided for capacitor producer, and the true matter of product is also provided for the user using capacitor
Measure foundation.
The present invention provides a kind of capacitor destructive testing device, comprising AC power supply module, DC power supplier and control
Molding block；The AC power supply module includes step-up transformer T1 and T2, divider resistance R1 and R2, fuse F2, inductance L1, electricity
Current transformer, direct current decoupling capacitor network, the first alternating voltage sampling circuit and alternating current sample circuit；Mains-supplied connects
It is connected to the step-up transformer T1, the step-up transformer T1 is connected to step-up transformer T2, the two of the step-up transformer T2
Individual output end connects the divider resistance R1 and R2 and is composed in series bleeder circuit, and the first alternating voltage sampling circuit is connected in parallel to
R2 two ends, first alternating voltage sampling circuit is connected with the control module；One end after fuse F2 and inductance L1 series connection
The first output end of the transformer T2 and the centre of the resistance R1 are connected to, the other end is connected in series direct current decoupling capacitor
As the first output end of the AC power supply module after network, it is mutual that another output end of the transformer T2 is connected in series electric current
As the second output end of AC power supply module after sensor, the current transformer alternating current sample circuit in parallel, institute
State alternating current sample circuit and be connected to control module；Control module adjusts the output capacitance of the direct current decoupling capacitor network
Size；
The DC power supplier includes pressure regulator T3, transformer T4, high-voltage rectifier bridge D1, resistance R4-R7, electric capacity C8-C9, two
Pole pipe D2 and DC voltage sample circuit；Mains-supplied is connected to the pressure regulator T3, and the pressure regulator T3 is connected to transformer
T4, the T4 are connected to first ends and second end of the high-voltage rectifier bridge D1 as input, and the high-voltage rectifier bridge D1 is used as output
The 3rd end and the 4th end parallel resistance R4 and electric capacity C8, the 3rd end of the high-voltage rectifier bridge D1 is connected in series resistance R5 and two
As the first output end of the DC power supplier after pole pipe D2, the 4th end of the high-voltage rectifier bridge D1 is directly as described
Second output end of DC power supplier, resistance R6 one end is connected to the resistance R5 and diode D2 centre, other end string
The 4th end composition bleeder circuit of the high-voltage rectifier bridge D1 is connected to after connection connection resistance R7, and the resistance R7 two ends are in parallel
Electric capacity C9 is connected, the DC voltage sample circuit is connected in parallel to resistance R7 two ends and the DC voltage sample circuit and control mould
Block is connected；First output end of the DC power supplier is connected with the first output end of the AC power supply module, described straight
Second output end of stream power module is connected with the second output end of the AC power supply module, is tested capacitor Cx two ends
It is respectively connecting to first output end and the second output end.
The wherein direct current decoupling capacitor network is specifically comprised：A.C. contactor J3-J10 respectively with resistance R3,
After electric capacity C1-C7 connects one by one, then compose in parallel the direct current decoupling capacitor network.
A kind of capacitor destructive testing method, it is characterised in that：AC power supply module is using transformer T1 and T2 to defeated
The line voltage entered is boosted, regulation to 1.3 times of subject rated capacitor alternating voltages, the first output of the transformer T2
End connects tested capacitor Cx first ends after being sequentially connected in series fuse F2, inductance L1 and direct current decoupling capacitor network,
The second output end of the transformer T2, which is connected in series after current transformer, connects tested the second ends of capacitor Cx；Hand over described
The output voltage and output current for flowing power module are sampled and feed back to control module；DC power supplier utilizes transformer
T4 is boosted to the line voltage of input, and rectifying and wave-filtering, regulation are carried out to the booster voltage of input by high-voltage rectifier bridge D1
To 10 times of subject rated capacitor DC voltages, control module is fed back to after carrying out voltage sample to the DC power supplier；
Control module is used for according to the alternating current sample circuit, and the value of alternating voltage sampling circuit and DC voltage sample circuit is adjusted
The size of the output capacitance of the direct current decoupling capacitor network is saved, is allowed to big with the electric capacity of tested electric capacity Cx specification requirement
It is small to match.
The wherein direct current decoupling capacitor network is specifically comprised：A.C. contactor J3-J10 respectively with resistance R3,
After electric capacity C1-C7 connects one by one, then compose in parallel the direct current decoupling capacitor network.
The present invention can accurately realize that direct current decoupling capacitor is matched with the accurate of tested electric capacity.
Brief description of the drawings：
Fig. 1 is S3 destructive testing figures；
Fig. 2 is capacitor destructive testing installation drawing；
Fig. 3 is AC power supply module figure；
Fig. 4 is DC power supplier figure；
Embodiment：
Patent of the present invention can be made up of three parts：AC power supply module, DC power supplier and control module, as shown in Figure 2.
AC power part is as shown in Figure 3：AC power part adjusts mains input voltage using pressure regulator T1, and passes through
Transformer T2 boosts to the line voltage of input, regulation to 1.3 times of subject rated capacitor alternating voltages.F1 is that 80A is fast
Fast fuse；A.C. contactor J1 switchs for ac test；F2 is the F1 in 25A fastp-acting fuses, i.e. Fig. 1；
Resistance R1 and R2 constitute bleeder circuit, and gauge outfit or voltage sampling are may be connected to for being sampled to alternating voltage, after output
Circuit is sampled control.The alternating current that current transformer Current transformer are used in coupling measurement loop, electricity
Gauge outfit is connected to after amplification after resistance sampling or control is sampled by sample circuit.
L1 is decoupling inductor, i.e. L1 in Fig. 1, its value is about 10mH, it is ensured that it does not occur humorous under all switch modes
Shake.
A.C. contactor J3 is direct current decoupling capacitor（C1~C10）With subject capacitor Cx discharge switches, it is ensured that direct current is gone
Coupling capacitor（C1~C10）It can be discharged, be prevented because maloperation is led by resistance R3 after off-test with subject capacitor Cx
Cause the potential safety hazards such as human electric shock.
A.C. contactor J4-J10 switchs for the switching of direct current decoupling capacitor, can by way of switching switching combining
Realize different capabilities subject capacitor Cx trial stretch（Provided according in standard, direct current decoupling capacitor capacity cannot be less than
10 times of subject condenser capacity）.This, which is switched to, only defines direct current decoupling capacitor in one of innovative point of this secondary design, standard
Device capacity cannot be less than 10 times of subject condenser capacity, but during actual test, according to the straight of fixed capacity
Decoupling capacitor is flowed, when adjusting DC voltage with 200V/min pressure regulation speed, boost process or 10 rated DC currents are reached
During pressure, dc source because of 100K Ω current-limiting resistances, can't to subject, capacitor is actual has much impact, if because of subject electric capacity
The insulativity reduction of device sample itself, and direct current decoupling capacitor can discharge sample in the loop, if direct current decoupling electricity
The capacity of container is excessive（Subject condenser capacity more than 15 times）, it will make to increase by the electric current for being tested capacitor moment,
Heat steeply rises, internal expansion, and causes capacitor the phenomenon such as on fire from explosion occur, and the phenomenon is not construed as subject electricity
Container is not inconsistent the regulation in standardization.Therefore using switching different capabilities capacitor in the design, and can be with multiple direct currents
Coupled capacitor device mode in parallel is tested, and is greatly improved the reliability of result of the test, more definite reaction subject electricity
The actual experimental state of container.
Direct current power source portion is as shown in Figure 4：Direct current power source portion adjusts mains input voltage using pressure regulator T3, and passes through
Transformer T4 is boosted to the line voltage of input, and rectification filter is carried out to the booster voltage of input by high-voltage rectifier bridge D1
Ripple, regulation to 10 times of subject rated capacitor DC voltages.F3 is 5A fastp-acting fuses in figure；A.C. contactor J2 is logical for direct current
Disconnect and closing；R4 and C8 composition filter circuits, filter out the AC compounent of output DC voltage；R5 is current-limiting resistance, i.e. in Fig. 1
100K Ω/5KV resistance；R6, R7 and C9 are pressure filter circuit, for the sampling of DC voltage, can pass through gauge outfit or electricity
Sampling module is pressed to carry out voltage sampling control；D1 is the high-voltage diode D in exchange decoupling high-voltage diode, i.e. Fig. 1.
Control module according to the alternating current sample circuit, alternating voltage sampling circuit and DC voltage sample circuit
The size of the output capacitance of the value regulation direct current decoupling capacitor network, is allowed to the electricity with tested electric capacity Cx specification requirement
Hold size to match.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (4)
1. a kind of capacitor destructive testing device, comprising AC power supply module, DC power supplier and control module；It is described to hand over
Flow power module and include step-up transformer T1 and T2, divider resistance R1 and R2, fuse F2, inductance L1, current transformer, direct current
Decoupling capacitor network, the first alternating voltage sampling circuit and alternating current sample circuit；Mains-supplied is connected to the boosting
Transformer T1, the step-up transformer T1 are connected to step-up transformer T2, the step-up transformer T2 two output ends connection
The divider resistance R1 and R2 is composed in series bleeder circuit, and the first alternating voltage sampling circuit is connected in parallel to R2 two ends, described
First alternating voltage sampling circuit is connected with the control module；One end is connected to the change after fuse F2 and inductance L1 series connection
The centre of depressor T2 the first output end and the resistance R1, the other end is connected in series after direct current decoupling capacitor network as institute
The first output end of AC power supply module is stated, another output end of the transformer T2 is connected in series after current transformer as friendship
The second output end of power module is flowed, the current transformer alternating current sample circuit in parallel, the alternating current is adopted
Sample circuit is connected to control module；Control module adjusts the size of the output capacitance of the direct current decoupling capacitor network；
The DC power supplier includes pressure regulator T3, transformer T4, high-voltage rectifier bridge D1, resistance R4-R7, electric capacity C8-C9, two
Pole pipe D2 and DC voltage sample circuit；Mains-supplied is connected to the pressure regulator T3, and the pressure regulator T3 is connected to transformer
T4, the T4 are connected to first ends and second end of the high-voltage rectifier bridge D1 as input, and the high-voltage rectifier bridge D1 is used as output
The 3rd end and the 4th end parallel resistance R4 and electric capacity C8, the 3rd end of the high-voltage rectifier bridge D1 is connected in series resistance R5 and two
As the first output end of the DC power supplier after pole pipe D2, the 4th end of the high-voltage rectifier bridge D1 is directly as described
Second output end of DC power supplier, resistance R6 one end is connected to the resistance R5 and diode D2 centre, other end string
The 4th end composition bleeder circuit of the high-voltage rectifier bridge D1 is connected to after connection connection resistance R7, and the resistance R7 two ends are in parallel
Electric capacity C9 is connected, the DC voltage sample circuit is connected in parallel to resistance R7 two ends and the DC voltage sample circuit and control mould
Block is connected；First output end of the DC power supplier is connected with the first output end of the AC power supply module, described straight
Second output end of stream power module is connected with the second output end of the AC power supply module, is tested capacitor Cx two ends
It is respectively connecting to first output end and the second output end.
2. device according to claim 1, wherein the direct current decoupling capacitor network is specifically comprised：Ac contactor
Device J3-J10 respectively with resistance R3, after electric capacity C1-C7 connects one by one, then compose in parallel the direct current decoupling capacitor network, control
Molding block is by controlling the size of the output capacitance of direct current decoupling capacitor network described in the on-off valve regulation of the A.C. contactor.
3. a kind of capacitor destructive testing method, it is characterised in that：AC power supply module is using transformer T1 and T2 to input
Line voltage boosted, regulation to 1.3 times subject rated capacitor alternating voltages, the first output end of the transformer T2
Tested capacitor Cx first ends, institute are connected after being sequentially connected in series fuse F2, inductance L1 and direct current decoupling capacitor network
The second output end for stating transformer T2 is connected in series tested the second ends of capacitor Cx of connection after current transformer；To the exchange
The output voltage and output current of power module are sampled and feed back to control module；DC power supplier utilizes transformer T4
The line voltage of input is boosted, rectifying and wave-filtering is carried out to the booster voltage of input by high-voltage rectifier bridge D1, regulation to
10 times of subject rated capacitor DC voltages, control module is fed back to after carrying out voltage sample to the DC power supplier；Control
Molding block is used for according to the alternating current sample circuit, the value regulation of alternating voltage sampling circuit and DC voltage sample circuit
The size of the output capacitance of the direct current decoupling capacitor network, is allowed to the capacitance size with tested electric capacity Cx specification requirement
Match.
4. method according to claim 3, wherein the direct current decoupling capacitor network is specifically comprised：Ac contactor
Device J3-J10 respectively with resistance R3, after electric capacity C1-C7 connects one by one, then compose in parallel the direct current decoupling capacitor network, control
Molding block is by controlling the size of the output capacitance of direct current decoupling capacitor network described in the on-off valve regulation of the A.C. contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710303013.XA CN106970309A (en) | 2017-05-03 | 2017-05-03 | A kind of capacitor destructive testing apparatus and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710303013.XA CN106970309A (en) | 2017-05-03 | 2017-05-03 | A kind of capacitor destructive testing apparatus and method |
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| Publication Number | Publication Date |
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| CN106970309A true CN106970309A (en) | 2017-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710303013.XA Pending CN106970309A (en) | 2017-05-03 | 2017-05-03 | A kind of capacitor destructive testing apparatus and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109683072A (en) * | 2019-01-11 | 2019-04-26 | 华中科技大学 | A kind of metalized film self-healing device under the composite voltage for alternating current-direct current |
| CN112444700A (en) * | 2020-11-25 | 2021-03-05 | 桂林电力电容器有限责任公司 | Method for testing self-healing performance of self-healing metallized film capacitor |
| CN113258801A (en) * | 2020-02-12 | 2021-08-13 | 新疆金风科技股份有限公司 | Direct current gets electric installation, system and wind generating set's start control system |
| US11536778B2 (en) * | 2018-11-14 | 2022-12-27 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and system for fault verification of electronic device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203993U (en) * | 1987-03-19 | 1988-01-20 | 宁波无线电专用设备厂 | Withstanding ac voltage testing instrument for capacitor |
| CN102175947A (en) * | 2011-03-18 | 2011-09-07 | 扬州双鸿电子有限公司 | Multi-path flow equalizing capacitor durability tester |
| CN203772986U (en) * | 2014-03-19 | 2014-08-13 | 中检集团南方电子产品测试（深圳）有限公司 | Capacitor pulse test device |
-
2017
- 2017-05-03 CN CN201710303013.XA patent/CN106970309A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203993U (en) * | 1987-03-19 | 1988-01-20 | 宁波无线电专用设备厂 | Withstanding ac voltage testing instrument for capacitor |
| CN102175947A (en) * | 2011-03-18 | 2011-09-07 | 扬州双鸿电子有限公司 | Multi-path flow equalizing capacitor durability tester |
| CN203772986U (en) * | 2014-03-19 | 2014-08-13 | 中检集团南方电子产品测试（深圳）有限公司 | Capacitor pulse test device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11536778B2 (en) * | 2018-11-14 | 2022-12-27 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and system for fault verification of electronic device |
| CN109683072A (en) * | 2019-01-11 | 2019-04-26 | 华中科技大学 | A kind of metalized film self-healing device under the composite voltage for alternating current-direct current |
| CN113258801A (en) * | 2020-02-12 | 2021-08-13 | 新疆金风科技股份有限公司 | Direct current gets electric installation, system and wind generating set's start control system |
| CN112444700A (en) * | 2020-11-25 | 2021-03-05 | 桂林电力电容器有限责任公司 | Method for testing self-healing performance of self-healing metallized film capacitor |
| CN112444700B (en) * | 2020-11-25 | 2023-11-03 | 桂林电力电容器有限责任公司 | Self-healing performance test method for self-healing metallized film capacitor |
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Application publication date: 20170721 |
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