CN104076253A - Electrical performance test device - Google Patents
Electrical performance test device Download PDFInfo
- Publication number
- CN104076253A CN104076253A CN201310108500.2A CN201310108500A CN104076253A CN 104076253 A CN104076253 A CN 104076253A CN 201310108500 A CN201310108500 A CN 201310108500A CN 104076253 A CN104076253 A CN 104076253A
- Authority
- CN
- China
- Prior art keywords
- module
- power supply
- resonant circuit
- power transmission
- supply module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The embodiment of the invention provides an electrical performance test device which comprises a power supply module, a shell, a power transmission wire and a resonance circuit module. The power supply module is used for selectively outputting test voltages. The shell surrounds and covers the power supply module. The power transmission wire is provided with a first end and a second end, the first end is connected with the power supply module in a coupling mode, the power transmission wire is used for transmitting testing voltages, and at least part of the power transmission wire is exposed out of the shell. The resonance circuit module is exposed out of the shell and is connected to the second end of the power transmission wire in a coupling mode. The resonance circuit module is at least provided with a capacitor, and the capacitor is selectively connected to a device to be tested in a coupling mode. Accordingly, the electrical performance test device can be used for accurately testing the low-inductance device to be tested.
Description
Technical field
The present invention is about a kind of electric characteristic detecting apparatus, particularly about a kind of electric characteristic detecting apparatus of measuring the device to be measured of low inductance value.
Background technology
Along with scientific and technological progress, electronic component is more and more diversified.In order to ensure the quality of electronic component, general manufacturer tends to complete various checks and the test of electronic component before dispatching from the factory.For instance, inductor, motor and coil are the electronic components of common tool inductance characteristic, conventionally can carry out the program of interlayer voltage-withstand test (layer short test) when quality restriction.Described interlayer voltage-withstand test generally refers to the voltage-withstand test between coil and coil on the same group, to finding out short circuit or the electronic component of inductance characteristic defective, avoids the product of installing described electronic component to break down in use procedure.
Yet during interlayer voltage-withstand test, described testing apparatus often cannot closely be arranged at around device to be measured, must be with cable connecting test equipment and device to be measured when carrying out device to be measured with automated test device.When the inductance value of device to be measured too low (be industry described in low sensibility reciprocal), the induction reactance of cable will cause obvious test error.With actual example, if an about 1uH inductor of inductance value connects the cable of 1 meter, its resonance frequency difference may be changed to 1.5MHz by 1MHz.
Significantly, industry needs a kind of new electric characteristic detecting apparatus, described electric characteristic detecting apparatus can be avoided the result of voltage-withstand test between the induction reactance interfere with layer of cable, particularly can effectively improve the interference that cable produces when carrying out the interlayer voltage-withstand test of low sensibility reciprocal device to be measured.
Summary of the invention
In view of this, the invention reside in and propose a kind of electric characteristic detecting apparatus, by new circuit design, allow device to be measured next-door neighbour resonant circuit module, the induction reactance of cable is not appeared in the resonant path of device to be measured, thereby can avoid the result of voltage-withstand test between the induction reactance interfere with layer of cable.
The embodiment of the present invention provides a kind of electric characteristic detecting apparatus, comprises power supply module, housing, power transmission line and resonant circuit module.Power supply module is in order to optionally to export test voltage.Housing surrounds and covers power supply module.Power transmission line has the first termination and the second termination, and the first termination couples power supply module, and power transmission line is in order to test transmission voltage, and at least part of power transmission line is exposed to outside housing.It is outer and couple the second termination of power transmission line that resonant circuit module is exposed to housing, and resonant circuit module at least has an electric capacity, couples device to be measured described capacitance selection.
In the present invention's one example embodiment, described electric characteristic detecting apparatus more comprises measurement module and control module.Measurement module couples resonant circuit module, the electrical signals at least producing when receiving test voltage in order to measure resonant circuit module.Control module couples measurement module and power supply module, according to electrical signals, to control power supply module, whether exports test voltage.
Another embodiment of the present invention provides a kind of electric characteristic detecting apparatus, comprises power supply module, power transmission line and resonant circuit module.Power supply module is in order to optionally to export test voltage.Power transmission line has the first termination and the second termination, and the first termination couples power supply module, and power transmission line is in order to test transmission voltage.Resonant circuit module couples the second termination of power transmission line, and resonant circuit module at least has an electric capacity, couples device to be measured described capacitance selection.At this, the length of power transmission line is greater than 50 centimeters.
In sum, the electric characteristic detecting apparatus that the embodiment of the present invention provides, power supply module and resonant circuit module are arranged to the two ends of power transmission line, by allowing device to be measured be close to the circuit design of resonant circuit module, the induction reactance of power transmission line is not appeared in the resonant path of device to be measured and resonant circuit module, thereby can avoid the result of voltage-withstand test between the induction reactance interfere with layer of power transmission line.
For enabling further to understand feature of the present invention and technology contents, refer to following about detailed description of the present invention and accompanying drawing, but these explanations and appended graphic the present invention that are only used for illustrating but not are done any restriction to interest field of the present invention.
Accompanying drawing explanation
Fig. 1 illustrates the functional block diagram according to the electric characteristic detecting apparatus of the present invention's one example embodiment.
Fig. 2 illustrates the functional block diagram according to the electric characteristic detecting apparatus of another example embodiment of the present invention.
Fig. 3 illustrates the circuit diagram of the electric characteristic detecting apparatus of an example embodiment again according to the present invention.[symbol description]
1: electric characteristic detecting apparatus
10: power supply module
12: housing
14: power transmission line
14a, 14b: termination
16: resonant circuit module
20: device to be measured
3: electric characteristic detecting apparatus
30: power supply module
32: housing
34: power transmission line
36: resonant circuit module
38: measurement module
40: control module
50: power supply module
500: power supply
502,504: diode
52: power transmission line
54: resonant circuit module
R1～R4: resistance
C1, C2: electric capacity
Q1: on-off element
Embodiment
Refer to Fig. 1, Fig. 1 illustrates the functional block diagram according to the electric characteristic detecting apparatus of the present invention's one example embodiment.As shown in Figure 1, electric characteristic detecting apparatus 1 has power supply module 10, housing 12, power transmission line 14 and resonant circuit module 16.Power transmission line 14 has two termination 14a, 14b, and wherein termination 14a couples power supply module 10, and termination 14b couples resonant circuit module 16.In practice, electric characteristic detecting apparatus 1 can be for measuring single device 20 to be measured or most devices 20 to be measured of batch measurement, and device 20 to be measured is not necessarily fixedly installed in resonant circuit module 16.For instance, resonant circuit module 16 can have corresponding test microscope carrier, tool (jig) or other suitable structures, and device to be measured 20 can plug and clamps (clamp) or install in the structure of described test microscope carrier or tool.The inductor that device 20 to be measured can be low sensibility reciprocal, motor, coil or other have the electronic component of inductance characteristic.In an example, the inductance value of device 20 to be measured can within 100 μ H, for example, can have the inductance value of approximately 1 μ H, 10 μ H, 50 μ H haply.
In addition, in resonant circuit module 16, should have at least one electric capacity, when having after the device to be measured 20 of inductance characteristic is couple to resonant circuit module 16, described electric capacity should can be considered one group of LC resonant circuit (resonant circuit) with device 20 to be measured.For instance, described electric capacity not necessarily can couple device 20 to be measured at any time, and described electric capacity can select to couple or do not couple (optionally coupling) device 20 to be measured.Certainly, the present embodiment does not limit the circuit component in resonant circuit module 16, as long as resonant circuit module 16 can form one group of resonant circuit with device 20 to be measured, in those skilled in the art, can freely design resonant circuit module 16.
Power supply module 10 is arranged in a housing 12, and power supply module 10 provides test voltage to device 20 to be measured in order to selectivity.For instance, power supply module 10 can be to open or closed condition, provides according to this or do not provide (optionally providing) test voltage.Described housing 12 is used for covering power supply module 10, and resonant circuit module 16 is exposed to outside housing 12, and makes power supply module 10 in entity structure, be independent of resonant circuit module 16.For instance, housing 12 can be the casing of power supply module 10, and housing 12 is suitable for accommodating power supply module 10.It should be noted that, the present embodiment does not limit size and the internal capacity of housing 12, as long as housing 12 covers power supply module 10 and resonant circuit module 16 when different, make power supply module 10 and resonant circuit module 16 structurally have clearly boundary, belong to the exposure scope of housing 12 of the present invention.
In practice, the test voltage that power supply module 10 provides can be 0～3kV (kilovolt) or higher direct current, but the present embodiment is not as limit.For example, power supply module 10 also can be supplied the direct current of 3.5kV, 4kV, 4.5kV, 5kV or other suitable sizes.In addition, test voltage is used for carrying out the interlayer voltage-withstand test of device 20 to be measured, and described test voltage is sent to device 20 to be measured through power transmission line 14.In an embodiment, power supply module 10 can separately control whether produce described test voltage by user or automatic equipment.Or, in another embodiment, can not close power supply module 10, but in power supply module 10, more be designed with on-off element, by controlling described on-off element, to control power supply module 10, whether export test voltage.
In the present embodiment, power transmission line 14 is in order to couple power supply module 10 and resonant circuit module 16, and the power transmission line 14 that therefore at least has part is exposed to outside housing 12, is coupled in by this resonant circuit module 16 outside housing 12.Certainly, power transmission line 14 not necessarily will be installed in power supply module 10 and resonant circuit module 16, and in an example, two termination 14a, 14b of power transmission line 14 can plug arbitrarily, or have at least one end to plug arbitrarily.That is to say, power transmission line 14 may be a kind of element that can change.At this, the present invention does not limit kind and the specification of power transmission line 14, as long as can test transmission voltage, all should belong to the exposure scope of power transmission line 14 of the present invention.
In actual use, for robotization test device 20 to be measured, power supply module 10 and resonant circuit module 16 often for example, more than apart from each other (50 centimeters), therefore need the power transmission line 14 of certain length to couple mutually.In an example, it is 50 centimeters, 75 centimeters, 100 centimeters, 125 centimeters or other suitable length that the length of power transmission line 14 can be selected.Also just because of the power transmission line 14 that general test is used is longer, cause the induction reactance of power transmission line 14 higher, but the electric capacity of the present embodiment resonant circuit module 16 and device to be measured 20 form LC resonant circuit (induction reactance that does not comprise power transmission line 14) outside power transmission line 14, make electric characteristic detecting apparatus 1 can carry out more accurately the interlayer voltage-withstand test of device 20 to be measured.
Note that housing 12 described in the present embodiment is in order to clearly demonstrate power supply module 10 and resonant circuit module 16 boundary structurally.Yet, if power supply module 10 has had suitable distance apart with resonant circuit module 16, while making the length of power transmission line 14 be greater than 50 centimeters, 75 centimeters, 100 centimeters, 125 centimeters or other suitable length, the present embodiment also can be only illustrates power supply module 10 and resonant circuit module 16 boundary structurally by the length of power transmission line 14, thereby does not limit whether there is housing 12.
On the other hand, electric characteristic detecting apparatus more can have measurement module and control module.Refer to Fig. 2, Fig. 2 illustrates the functional block diagram according to the electric characteristic detecting apparatus of another example embodiment of the present invention.As shown in Figure 2, electric characteristic detecting apparatus 3 can have power supply module 30, housing 32, power transmission line 34 with, resonant circuit module 36, measurement module 38 and control module 40.Identical with last embodiment (Fig. 1), correlation function and the structure of power supply module 30, power transmission line 34 and resonant circuit module 36, not in this to go forth for the present embodiment (Fig. 2).Different from last embodiment (Fig. 1), resonant circuit module 36 more can couple measurement module 38, makes measurement module 38 can record the result of the interlayer voltage-withstand test of device 20 to be measured.In addition, housing 32 does not only have accommodating power supply module 30, for example more can accommodating control module 40.
The electrical signals that described measurement module 38 can produce in order to measure resonant circuit module 30 when receiving test voltage.In practice, measurement module 38 can be measured resonant circuit module 30 and electrical react, particularly resonant reactive of device 20 to be measured after receiving test voltage.In an example, measurement module 38 can coupled in parallel device 20 to be measured, and measurement module 38 can be voltmeter or other suitable measurers.Certainly, in an example, measurement module 38 also can be arranged among housing 32, and the present embodiment is not limited.
Control module 40 can couple measurement module 38 and power supply module 30, and the electrical signals that records according to measurement module 38 of control module 40, controls power supply module 30 and whether exports test voltage.In practice, control module 40 can judge that whether device 20 to be measured is by interlayer voltage-withstand test by described electrical signals.If control module 40 judgement device 20 to be measured is defective products, the on-off element (not being illustrated in Fig. 2) of control module 40 controllable power supply modules 30, make by this power supply module 30 stop exporting test voltage, to avoid electric characteristic detecting apparatus 3 to be damaged.Certainly, in an example, control module 40 also can be arranged on outside housing 32, and the present embodiment is not limited.
Refer to Fig. 3, Fig. 3 illustrates the circuit diagram of the electric characteristic detecting apparatus of an example embodiment again according to the present invention.As shown in Figure 3, the power supply module in electric characteristic detecting apparatus 50 can have power supply 500, diode 502 and 504, resistance R 1～R4, capacitor C 2 and on-off element Q1.Resonant circuit module 54 in electric characteristic detecting apparatus has capacitor C 1, and capacitor C 1 can be considered resonant capacitance.In other words, after device 20 to be measured is coupled to resonant circuit module 54, capacitor C 1 can be considered one group of LC resonant circuit with the device to be measured 20 of tool inductance characteristic, and measures electrical signals by the measurement module with device 20 coupled in parallel to be measured.Hence one can see that, and power transmission line 52 is only in order to test transmission voltage, and its induction reactance can not exist in actual LC resonant path, and electric characteristic detecting apparatus can accurately carry out the interlayer voltage-withstand test of device 20 to be measured accordingly.
In addition, with regard to other elements, diode 502,504 is in order to rectification and avoid adverse current, and the voltage that capacitor C 2 provides in order to the charge power supply 500 of pressurizeing, produces test voltage by this.In practice, resistance R 3 can be current-limiting resistance, the maximum current limit element while doing interlayer voltage-withstand test.In an example, power supply 500 can be general rectification circuit or other can supply galvanic equipment.At this, though the electric characteristic detecting apparatus of Fig. 3 does not illustrate control module, control module can be controlled the on-off element Q1 conducting (turn on) in power supply module 50, makes test voltage feed-in resonant circuit module 54 to carry out interlayer voltage-withstand test.Although note that the present embodiment has illustrated a possible circuit embodiment, the present invention is not limited with this circuit diagram, in person of ordinary skill in the field's other similar or impartial circuit of designed, designed optionally.
In sum, the electric characteristic detecting apparatus that the embodiment of the present invention provides, power supply module and resonant circuit module are arranged to the two ends of power transmission line, by allowing device to be measured be close to the circuit design of resonant circuit module, the induction reactance of power transmission line is not appeared in the resonant path of device to be measured and resonant circuit module, thereby can avoid the result of voltage-withstand test between the induction reactance interfere with layer of power transmission line.
By the above detailed description of preferred embodiments, hope can be known description feature of the present invention and spirit more, and not with above-mentioned disclosed preferred embodiment, category of the present invention is limited.On the contrary, its objective is that hope can contain in the category of the scope of the claims of being arranged in of various changes and tool equality institute of the present invention wish application.
Claims (10)
1. an electric characteristic detecting apparatus, is characterized in that, comprising:
One power supply module, in order to optionally to export a test voltage;
One housing, surrounds and covers this power supply module;
One power transmission line, has one first termination and one second termination, and this first termination couples this power supply module, and this power transmission line is in order to transmit this test voltage, and this at least part of power transmission line is exposed to outside this housing; And
One resonant circuit module, is exposed to outside this housing, and this resonant circuit module couples this second termination of this power transmission line, and this resonant circuit module at least has an electric capacity, couples a device to be measured this capacitance selection.
2. electric characteristic detecting apparatus as claimed in claim 1, is characterized in that, more comprises:
One measurement module, couples this resonant circuit module, the electrical signals at least producing when receiving this test voltage in order to measure this resonant circuit module; And
One control module, couples this measurement module and this power supply module, according to this electrical signals, to control this power supply module, whether exports this test voltage.
3. electric characteristic detecting apparatus as claimed in claim 2, is characterized in that, this test voltage is in order to carry out the interlayer voltage-withstand test of this device to be measured.
4. electric characteristic detecting apparatus as claimed in claim 3, is characterized in that, this power supply module has an on-off element, and this on-off element is controlled by this control module optionally to export this test voltage.
5. electric characteristic detecting apparatus as claimed in claim 1, is characterized in that, this electric capacity and this device to be measured form a resonant path, and the inductance value of this device to be measured is less than 100 μ H.
6. an electric characteristic detecting apparatus, is characterized in that, comprising:
One power supply module, in order to optionally to export a test voltage;
One power transmission line, has one first termination and one second termination, and this first termination couples this power supply module, and this power transmission line is in order to transmit this test voltage; And
One resonant circuit module, couples this second termination of this power transmission line, and this resonant circuit module at least has an electric capacity, couples a device to be measured this capacitance selection;
Wherein the length of this power transmission line is greater than 50 centimeters.
7. electric characteristic detecting apparatus as claimed in claim 6, is characterized in that, more comprises:
One measurement module, couples this resonant circuit module, the electrical signals at least producing when receiving this test voltage in order to measure this resonant circuit module; And
One control module, couples this measurement module and this power supply module, according to this electrical signals, to control this power supply module, whether exports this test voltage.
8. electric characteristic detecting apparatus as claimed in claim 7, is characterized in that, this test voltage is in order to carry out the interlayer voltage-withstand test of this device to be measured.
9. electric characteristic detecting apparatus as claimed in claim 8, is characterized in that, this power supply module has an on-off element, and this on-off element is controlled by this control module optionally to export this test voltage.
10. electric characteristic detecting apparatus as claimed in claim 6, is characterized in that, this electric capacity and this device to be measured form a resonant path, and the inductance value of this device to be measured is less than 100 μ H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310108500.2A CN104076253B (en) | 2013-03-29 | 2013-03-29 | Electrical performance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310108500.2A CN104076253B (en) | 2013-03-29 | 2013-03-29 | Electrical performance test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104076253A true CN104076253A (en) | 2014-10-01 |
| CN104076253B CN104076253B (en) | 2017-05-17 |
Family
ID=51597646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310108500.2A Active CN104076253B (en) | 2013-03-29 | 2013-03-29 | Electrical performance test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104076253B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS608760A (en) * | 1983-06-29 | 1985-01-17 | Yuniki Eng:Kk | Deciding device of various coils |
| CN201993439U (en) * | 2011-02-24 | 2011-09-28 | 华锐风电科技(江苏)有限公司 | Marine high voltage test device of high-power unit transformer |
| CN202471899U (en) * | 2012-03-15 | 2012-10-03 | 辽宁省电力有限公司大连供电公司 | Integral alternating-current withstand voltage test device |
| CN202748440U (en) * | 2012-03-21 | 2013-02-20 | 丁晓东 | Vehicular variable-frequency resonant withstand-voltage testing apparatus |
-
2013
- 2013-03-29 CN CN201310108500.2A patent/CN104076253B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS608760A (en) * | 1983-06-29 | 1985-01-17 | Yuniki Eng:Kk | Deciding device of various coils |
| CN201993439U (en) * | 2011-02-24 | 2011-09-28 | 华锐风电科技(江苏)有限公司 | Marine high voltage test device of high-power unit transformer |
| CN202471899U (en) * | 2012-03-15 | 2012-10-03 | 辽宁省电力有限公司大连供电公司 | Integral alternating-current withstand voltage test device |
| CN202748440U (en) * | 2012-03-21 | 2013-02-20 | 丁晓东 | Vehicular variable-frequency resonant withstand-voltage testing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104076253B (en) | 2017-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9366744B2 (en) | Instrument transformer test equipment and method | |
| CN103267933B (en) | The method of shelf depreciation in measuring transformer induced voltage test device | |
| CN104991124B (en) | A kind of characteristic impedance calibration system and method for testing | |
| CN107407706B (en) | Transformer parameter measurement device and method | |
| CN113039445A (en) | End plug sensor device with voltage divider and test point features | |
| CN206584033U (en) | Bulk current injection test system check device | |
| CN205749844U (en) | A kind of power supply ripple test Apparatus and system | |
| WO2022244246A1 (en) | Device for detecting ic noise resistance amount, method for detecting ic noise resistance amount, and method for measuring internal impedance of ic | |
| CN104076253A (en) | Electrical performance test device | |
| Brandt et al. | Analysis of winding fault in electric machines by frequency method | |
| CN104237835A (en) | Wiring detection device for straight-through current transformer | |
| CN116184078A (en) | Circuit, system and method for testing electric performance of filter | |
| CN207650269U (en) | A kind of offline temperature measuring equipment of motor | |
| Yoda et al. | Current Measurement Methods that Deliver High Precision Power Analysis in the Field of Power Electronics | |
| CN105866667A (en) | Loop resistance test method for two-terminal-grounding circuit breaker | |
| CN102449493A (en) | Device for diagnosing measurement objects using a measurement voltage | |
| CN107991538A (en) | A kind of no-load loss test coil device and no-load loss tester | |
| TWI470241B (en) | Device for testing electrical property | |
| CN108562813A (en) | A kind of test device of SiC Mosfet electrical properties | |
| CN103323722A (en) | Direct current magnetic bias fault simulation structure for transformer | |
| CN208399595U (en) | No-load loss tests coil device and no-load loss tester | |
| Rathnayaka et al. | Inductively coupled on‐line impedance measurement for condition monitoring of electrical equipment | |
| CN207851157U (en) | The high voltage dielectric loss test device of comparison current signal is acquired using resitstance voltage divider | |
| CN106501750A (en) | A kind of voltage transformer site error detects secondary wiring device | |
| CN106526324B (en) | Impedance characteristic testing device of capacitive equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |