CN208705436U - A kind of capacitor discharge tester - Google Patents
A kind of capacitor discharge tester Download PDFInfo
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- CN208705436U CN208705436U CN201821406469.5U CN201821406469U CN208705436U CN 208705436 U CN208705436 U CN 208705436U CN 201821406469 U CN201821406469 U CN 201821406469U CN 208705436 U CN208705436 U CN 208705436U
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- voltage
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Abstract
The utility model discloses a kind of capacitor discharge testers, including controllable switch, voltage regulating module, rectification module, voltage acquisition module, analog-digital converter and control module.Capacitor discharge tester provided by the present application, it can realize after receiving user instruction and first be charged to testing capacitor automatically, it is powered off again after charging to preset charge voltage, and record the voltage at testing capacitor both ends from preset charge voltage be discharged to default discharge voltage needed for the time, determine whether the testing capacitor is qualified according to this time so as to subsequent, the charging control process and discharge time recording process are not necessarily to artificially participate in, charge control precision is high, and Errors of time keeping is small.
Description
Technical field
The utility model relates to electrical test technical fields, more particularly to a kind of capacitor discharge tester.
Background technique
GB/T12747.1-2017/IEC60831-1:2014 is in 11 clause regulations to self healing capacitor internal discharge
The test requirements document of device, test method is in 22 clause regulations are as follows: " capacitor unit and/or group should be equipped with making each unit exist
In 3min fromVoltage rating crest discharge to 75V or lower discharge device.
GB/T15576-2008 " low-pressure reactive power compensating device assemblies " is provided in 7.12 discharge test of clause: electric discharge examination
It tests and is carried out on the capacitor of different capabilities, capacitor is charged into voltage rating peak value with direct current method, then connect electric discharge and set
It is standby, meet and required as defined in 6.9.8, then this test passes through.The wherein main contents of 6.9.8 clause are as follows: the electric discharge of device is set
It applies after should be guaranteed that capacitor power-off, is not more than 3min from voltage rating crest discharge to the time of 50V.
Above-mentioned two standard is substantially phase to the test method of the discharge time of self healing capacitor internal discharge device
With, only different in the specified value of discharge voltage, one is defined as 75V or lower, and one is defined as 50V.
In the prior art to realize the discharge test to capacitor, self healing capacitor usually is attempted by with a voltmeter
Both ends.First self healing capacitor is charged to a DC power supplyThen start to use after disconnecting charging circuit manually
Stopwatch clocks, and observes capacitor voltage at both ends, stops timing at capacitor discharge to specified value (referring to 75V or 50V), record is put
Electric time, the time of record meet the requirements in 3min.Although this simple method for testing bacterial resistance is able to satisfy test requirements document, but its intelligence
Degree difference can be changed, charging voltage artificially controls, and precision is low, and the discharge time in addition recorded is observed by people, and error is big.
Therefore, how to provide a kind of scheme of solution above-mentioned technical problem is that those skilled in the art need to solve at present
Problem.
Utility model content
The purpose of the utility model is to provide a kind of capacitor discharge testers, and charge control precision is high, and time record misses
Difference is small.
In order to solve the above technical problems, the utility model provides a kind of capacitor discharge tester, comprising:
The controllable switch that first end connects to power supply；
The voltage regulating module that input terminal is connect with the second end of the controllable switch；
Input terminal is connect with the output end of the voltage regulating module, the rectification module that output end is connect with testing capacitor；
The voltage acquisition module that input terminal is connect with the testing capacitor, for recording the testing capacitor in real time
The voltage at both ends；
The analog-digital converter that input terminal is connect with the output end of the voltage acquisition module；
Respectively with the output of the control terminal of the controllable switch, the control terminal of the voltage regulating module and the analog-digital converter
The control module for holding connection, for controlling the controllable switch closure when receiving user instruction, and by controlling the tune
Die block makes the both end voltage of the testing capacitor be charged to preset charge voltage；It is also used at the both ends of the testing capacitor
Voltage when having charged to the preset charge voltage, control the controllable switch and disconnect and start timing, in the electricity to be measured
The voltage at the both ends of container stops timing when being down to default discharge voltage, to obtain the testing capacitor from the preset charged
Voltage is down to the time of the default discharge voltage.
Preferably, the voltage regulating module includes:
Input terminal as the input terminal of the voltage regulating module, control terminal as the voltage regulating module control terminal it is single-phase from
Dynamic pressure regulator；
Input terminal connect with the output end of the single-phase automatic voltage regulator, output end of the output end as the voltage regulating module
Step-up transformer.
Preferably, the controllable switch is relay.
Preferably, further includes:
The breaker being set between the power supply and the relay.
Preferably, the voltage acquisition module is voltmeter.
Preferably, the rectification module is rectifier diode.
Preferably, the control module includes:
Processor；
The human-computer interaction device being connected to the processor, for receiving the user instruction.
Preferably, the human-computer interaction device is additionally provided with USB interface, is used to provide the described the electric discharge electricity of testing capacitor
Pressure and the electronic document of discharge time curve export.
Preferably, the human-computer interaction device is human-computer interaction touch screen.
Capacitor discharge tester provided by the present application can be realized automatically to testing capacitance after receiving user instruction
Device is first charged, and is powered off again after charging to preset charge voltage, and the voltage for recording testing capacitor both ends is filled from default
Time needed for piezoelectric voltage is discharged to default discharge voltage determines whether the testing capacitor closes according to this time so as to subsequent
Lattice, the charging control process and discharge time recording process are not necessarily to artificially participate in, and charge control precision is high, Errors of time keeping
It is small.
Detailed description of the invention
It, below will be to the prior art and embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of capacitor discharge tester provided by the utility model；
Fig. 2 is the structural schematic diagram of another capacitor discharge tester provided by the utility model；
Fig. 3 is a kind of discharge voltage of testing capacitor and discharge time curve synoptic diagram provided by the utility model.
Specific embodiment
The core of the utility model is to provide a kind of capacitor discharge tester, and charge control precision is high, and time record misses
Difference is small.
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Fig. 1 is please referred to, Fig. 1 is a kind of structural schematic diagram of capacitor discharge tester provided by the utility model, the electricity
Condenser discharge tester includes:
The controllable switch 1 that first end connects to power supply；
The voltage regulating module 2 that input terminal is connect with the second end of controllable switch 1；
Input terminal is connect with the output end of voltage regulating module 2, the rectification module 3 that output end is connect with testing capacitor C；
The voltage acquisition module 4 that input terminal is connect with testing capacitor C, for recording the both ends of testing capacitor C in real time
Voltage；
The analog-digital converter 5 that input terminal is connect with the output end of voltage acquisition module 4；
It is connect respectively with the output end of the control terminal of controllable switch 1, the control terminal of voltage regulating module 2 and analog-digital converter 5
Control module 6 is closed, and make electricity to be measured by controlling voltage regulating module 2 for controlling controllable switch 1 when receiving user instruction
The both end voltage of container C is charged to preset charge voltage；It is also used to charge to default fill in the voltage at the both ends of testing capacitor C
When piezoelectric voltage, control controllable switch 1 disconnects and starts timing, and the voltage at the both ends of testing capacitor C is down to default electric discharge electricity
Stop timing when pressure, the time of default discharge voltage is down to obtain testing capacitor C from preset charge voltage.
Specifically, before detecting to testing capacitor C, testing capacitor C is first connected to the discharge test instrument
The output end of test lead namely rectification module 3.Then user inputs user instruction to control module 6, and user instruction here can
To include the preset charge voltage and default discharge voltage of testing capacitor C, wherein preset charge voltage here is usuallyUNFor the voltage rating of testing capacitor C, default discharge voltage is usually 75V or 50V, and specific value is according to reality
Border situation is determined.Control module 6 can control the closure of controllable switch 1 after receiving user instruction, further, since different is to be measured
Capacitor C, preset charge voltage may also be different, but power supply (can be alternating current, export 220V alternating current) output is specified
What voltage was usually fixed, it is based on this, control module 6 can also be according to preset charge voltage and by voltage regulating module 2 come to power supply
The voltage of output is adjusted, and realization adjusts to preset charge voltage testing capacitor C charging voltage.Voltage regulating module 2 exports
Voltage by rectification module 3 rectification after can for testing capacitor C charge.Voltage acquisition module 4 can be in real time to be measured at this time
The voltage at the both ends of capacitor C is acquired, and it is default that control module 6 judges whether the voltage at the both ends of testing capacitor C reaches
Charging voltage, if it is, control controllable switch 1 disconnects, power supply stops being that testing capacitor C charges；Otherwise, power supply continues as
Testing capacitor C charging.
For the reliability and discharge stability for improving discharge test, control module 6 is determining the both ends of testing capacitor C
After voltage reaches preset charge voltage, the voltage that can control the both ends of testing capacitor C is kept for a period of time (can be according to reality
The setting of border situation) after control the disconnection of controllable switch 1 again, and start timing while controlling controllable switch 1 and disconnecting, power supply at this time
Stop being that testing capacitor C charges, testing capacitor C starts to discharge by its included discharge resistance R, the voltage at both ends by
Preset charge voltage starts to be gradually reduced, and control module 6 determines testing capacitor C by the voltage that voltage acquisition module 4 acquires
The voltage at both ends when dropping to default discharge voltage, stop timing, so far, just can obtain testing capacitor C from default
Charging voltage to default discharge voltage discharge time.Whether user can determine testing capacitor C according to the discharge time
It is qualified.
Capacitor discharge tester provided by the present application can be realized automatically to testing capacitance after receiving user instruction
Device C is first charged, and is powered off again after charging to preset charge voltage, and records the voltage at the both ends testing capacitor C from default
Time needed for charging voltage is discharged to default discharge voltage determines that testing capacitor C is according to this time so as to subsequent
No qualification, the charging control process and discharge time recording process are not necessarily to artificially participate in, and charge control precision is high, time record
Error is small.
Referring to figure 2., Fig. 2 is the structural schematic diagram of another capacitor discharge tester provided by the utility model；
On the basis of the above embodiments:
As a kind of preferred embodiment, voltage regulating module 2 includes:
Input terminal, control terminal single-phase automatic Regulation as the control terminal of voltage regulating module 2 of the input terminal as voltage regulating module 2
Device TP；
Input terminal connect with the output end of single-phase automatic voltage regulator TP, the liter of output end of the output end as voltage regulating module 2
Pressure transformer TR.
Specifically, the application considers that the rated output voltage of general power supply can not be infinitely great, and power supply is specified defeated
Voltage can not generally adjust out, and different testing capacitor C, preset charge voltage may also be different, and suitable one
The preset charge voltage of partial testing capacitor C can be greater than the rated output voltage of power supply.
Based on this, in the present embodiment, voltage regulating module 2 includes single-phase automatic voltage regulator TP, for the control according to control module 6
System instruction is adjusted the output voltage of power supply, and step-up transformer TR then boosts to the voltage adjusted of voltage regulating module 2,
So that the both end voltage of testing capacitor C can be charged to preset charge voltage by the voltage after rectification module.As it can be seen that this reality
It applies example and meets the testing requirement of different testing capacitor C by the combination of single-phase automatic voltage regulator TP+ step-up transformer TR, fit
Answering property is good.
In addition, the output parameter of step-up transformer TR here meet the voltage rating of self healing capacitor from 220V to
The test requirements document of 1000V.The application is for selecting which type of single-phase automatic voltage regulator TP not to be particularly limited, according to reality
Border situation is determined.
As a kind of preferred embodiment, controllable switch 1 is relay KM.
Specifically, relay KM is connected on the input terminal of voltage regulating module 2, when needing to charge for testing capacitor C, touching
Point closure, after charging complete, contact is disconnected, and disconnects charge power supply.
Relay KM can be realized to being effectively isolated between control module 6 and the charging circuit of testing capacitor C, improve
The safety and reliability of capacitor discharge tester.
Certainly, controllable switch 1 here can also be other kinds of controllable switch, and the application does not limit particularly herein
It is fixed.
As a kind of preferred embodiment, further includes:
The circuit breaker Q F being set between power supply and relay KM.
Specifically, in order to further increase the safety and reliability of capacitor discharge tester, the application is also in power supply
It is provided with circuit breaker Q F between relay KM, can close, carry and cut-off the electric current under normal loop condition, and can close
It closes, carry and cut-off the electric current under abnormal loop condition before the deadline, the protection and electrical isolation for playing equipment are used.
As a kind of preferred embodiment, voltage acquisition module 4 is voltmeter.
Specifically, voltmeter has the advantages that acquisition precision is high, at low cost, and certainly, voltage acquisition module 4 here may be used also
Think other kinds of voltage acquisition module, the application does not limit particularly herein.
As a kind of preferred embodiment, rectification module 3 is rectifier diode D1.
Specifically, the rectifier diode D1 selected here uses the rectifier diode D1 with high backward voltage.In order to mention
High reliability and safety can use multiple rectifier diode D1 series connection here to meet the requirement of its reverse withstand voltage.
Rectifier diode D1 has the advantages that small in size, circuit structure is simple, at low cost.Certainly, rectification module 3 here
It can also be other kinds of rectification module 3, such as rectifier bridge etc., the application do not limit particularly herein.
As a kind of preferred embodiment, control module 6 includes:
Processor；
Human-computer interaction device connected to the processor, for receiving user instructions.
Specifically, human-computer interaction device is mainly used to receive user instructions, and the user instruction received is sent to place
Manage device, processor is discharged and records discharge time again receiving user instruction realization and first charged to testing capacitor C.
Human-computer interaction device completes related preplanned mission by carrying out data interaction with processor.
Specific setting on human-computer interaction device may include power switch, be arranged, do map sheet, historical record, boosting, drop
Pressure charges, is automatic, electric discharge, filename, preservation to USB flash disk, suspends, clears data, discharge voltage, charging voltage, discharge time
Record.
In addition, processor here can be PLC (Programmable Logic Controller, programmable logic control
Device processed), it is, of course, also possible to be other kinds of processor, determine according to the actual situation.PLC passes through to preset charge voltage
Control, operation, work out dedicated software, realize the automatic adjustment of charging voltage；PLC can also realize charging voltage, electric discharge electricity
The curve of pressure such as shows at the functions.
As a kind of preferred embodiment, processor is also used to control electric discharge of the human-computer interaction device to testing capacitor C
Voltage and discharge time curve carry out real-time display.
Referring to figure 3., Fig. 3 is that a kind of discharge voltage of testing capacitor C provided by the utility model and discharge time are bent
Line schematic diagram.
Understand in order to facilitate flash-over characteristic of the user to testing capacitance, processor can also control human-computer interaction device pair
The discharge voltage and the curve of discharge time of testing capacitor C carries out real-time display.
It specifically, can will be to be measured when the curve of discharge voltage and discharge time to testing capacitor C is shown
The discharge voltage of capacitor C is as ordinate, using the charge and discharge time as abscissa, while showing preset charge voltage, presetting
Discharge voltage and from preset charge voltage to the discharge time of default discharge voltage.Wherein, the unit-sized of ordinate can root
Size setting is carried out according to the voltage rating of testing capacitor C.The unit-sized of abscissa, which can according to need, to be adjusted.
As a kind of preferred embodiment, human-computer interaction device is additionally provided with USB interface, for providing testing capacitor C
Discharge voltage and discharge time curve electronic document export.
Specifically, further appreciate that the present embodiment mentions in order to facilitate flash-over characteristic of the user to testing capacitor C
Be additionally provided with USB interface on the human-computer interaction device of confession, so as to by the discharge voltage of testing capacitor C and discharge time curve with
The form of electronic document exports.
As a kind of preferred embodiment, human-computer interaction device is human-computer interaction touch screen.
Specifically, compared with button human-computer interaction device, the more convenient user's operation of human-computer interaction touch screen.Certainly,
Here human-computer interaction device can also use other kinds of human-computer interaction device, determine according to the actual situation.
It should be noted that in the present specification, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (9)
1. a kind of capacitor discharge tester characterized by comprising
The controllable switch that first end connects to power supply；
The voltage regulating module that input terminal is connect with the second end of the controllable switch；
Input terminal is connect with the output end of the voltage regulating module, the rectification module that output end is connect with testing capacitor；
The voltage acquisition module that input terminal is connect with the testing capacitor, for recording the both ends of the testing capacitor in real time
Voltage；
The analog-digital converter that input terminal is connect with the output end of the voltage acquisition module；
Connect respectively with the output end of the control terminal of the controllable switch, the control terminal of the voltage regulating module and the analog-digital converter
The control module connect, for controlling the controllable switch closure when receiving user instruction, and by controlling the pressure regulation mould
Block makes the both end voltage of the testing capacitor be charged to preset charge voltage；It is also used to the electricity at the both ends of the testing capacitor
When pressure has charged to the preset charge voltage, controls the controllable switch and disconnect and start timing, in the testing capacitor
The voltage at both ends stop timing when being down to default discharge voltage, to obtain the testing capacitor from the preset charge voltage
It is down to the time of the default discharge voltage.
2. capacitor discharge tester as described in claim 1, which is characterized in that the voltage regulating module includes:
Input terminal, control terminal single-phase automatic tune as the control terminal of the voltage regulating module of the input terminal as the voltage regulating module
Depressor；
Input terminal connect with the output end of the single-phase automatic voltage regulator, the liter of output end of the output end as the voltage regulating module
Pressure transformer.
3. capacitor discharge tester as claimed in claim 2, which is characterized in that the controllable switch is relay.
4. capacitor discharge tester as claimed in claim 3, which is characterized in that further include:
The breaker being set between the power supply and the relay.
5. capacitor discharge tester as claimed in claim 4, which is characterized in that the voltage acquisition module is voltmeter.
6. capacitor discharge tester as claimed in claim 5, which is characterized in that the rectification module is rectifier diode.
7. capacitor discharge tester as claimed in any one of claims 1 to 6, which is characterized in that the control module includes:
Processor；
The human-computer interaction device being connected to the processor, for receiving the user instruction.
8. capacitor discharge tester as claimed in claim 7, which is characterized in that the human-computer interaction device is additionally provided with
The electronic document of USB interface, the discharge voltage and discharge time curve that are used to provide the described testing capacitor exports.
9. capacitor discharge tester as claimed in claim 7, which is characterized in that the human-computer interaction device is human-computer interaction
Touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821406469.5U CN208705436U (en) | 2018-08-29 | 2018-08-29 | A kind of capacitor discharge tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821406469.5U CN208705436U (en) | 2018-08-29 | 2018-08-29 | A kind of capacitor discharge tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208705436U true CN208705436U (en) | 2019-04-05 |
Family
ID=65945379
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821406469.5U Expired - Fee Related CN208705436U (en) | 2018-08-29 | 2018-08-29 | A kind of capacitor discharge tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208705436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031071A (en) * | 2018-08-29 | 2018-12-18 | 浙江方圆电气设备检测有限公司 | A kind of capacitor discharge tester |
-
2018
- 2018-08-29 CN CN201821406469.5U patent/CN208705436U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031071A (en) * | 2018-08-29 | 2018-12-18 | 浙江方圆电气设备检测有限公司 | A kind of capacitor discharge tester |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190405 Termination date: 20210829 |