CN207396592U - A kind of current tester - Google Patents
A kind of current tester Download PDFInfo
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- CN207396592U CN207396592U CN201721527101.XU CN201721527101U CN207396592U CN 207396592 U CN207396592 U CN 207396592U CN 201721527101 U CN201721527101 U CN 201721527101U CN 207396592 U CN207396592 U CN 207396592U
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Abstract
The utility model provides a kind of current tester, including：Multiple ammeters；Switch module with multiple output terminals and multiple input end；It is connected for the input terminal of the current input terminal that is connected with electrical equipment to be tested respectively with each ammeter, the output terminal of each ammeter connects one to one respectively with each input terminal of switch module, and each output terminal of switch module connects respectively with for the current output terminal that is connected with electrical equipment to be tested；Or, current input terminal and each input terminal of switch module for being connected with electrical equipment to be tested connect, input terminal of each output terminal of switch module respectively with each ammeter connects one to one, and the output terminal of each ammeter connects respectively with for the current output terminal that is connected with electrical equipment to be tested；Switch module, for controlling the opening and closing of each ammeter；And when needing switching electric current table, target current table is opened in first control, turns off the ammeter of switching front opening.
Description
Technical field
The utility model is related to equipment testing field more particularly to a kind of current testers.
Background technology
, it is necessary to test the electric current of the various working conditions of equipment in the production of electrical equipment or maintenance process.Currently,
When measuring the electric current for the electrical equipment that current fluctuation scope is larger under different working condition, generally use universal meter.When electricity consumption is set
When standby working condition changes, the scope of electric current also accordingly changes, it is necessary to which universal meter switches different ranges.But universal meter is cut
, it is necessary to disconnect the connection with electrical equipment when changing range, rezeroing, this results in electrical equipment power down, it is necessary to restart electricity consumption
Equipment in this way, needing constantly to restart electrical equipment when measuring the electric current of multiple working conditions, causes great inconvenience, drop
Low testing efficiency.
Utility model content
The purpose of this utility model is to provide a kind of current tester, to solve following technical problem：Electrical equipment is not
With working condition current range fluctuation it is larger when, it is constantly heavy when universal meter range causes electrical equipment power down because needing to switch
It opens, test inconvenience, testing efficiency is caused to reduce.
The purpose of this utility model is achieved through the following technical solutions：
A kind of current tester, including：
For the current input terminal and current output terminal being connected with electrical equipment to be tested；
Multiple ammeters；Wherein, the range of the multiple ammeter is different；
Switch module with multiple output terminals and multiple input end；
Wherein, the current input terminal for being connected with electrical equipment to be tested connects respectively with the input terminal of each ammeter
Connect, each input terminal of the output terminal of each ammeter respectively with the switch module connects one to one, the switch module it is each
The output terminal current output terminal connection with described for being connected with electrical equipment to be tested respectively；Alternatively, it is described be used for it is to be measured
The current input terminal of electric equipment connection on probation is connected with each input terminal of the switch module, each output terminal of the switch module
The input terminal with each ammeter connects one to one respectively, and the output terminal of each ammeter is used for and electricity consumption to be tested respectively with described
The current output terminal connection of equipment connection；
The switch module, for controlling the opening and closing of each ammeter；And when needing switching electric current table, first
Target current table is opened in control, turns off the ammeter of switching front opening.
Preferably, the switch module includes multiple switch；
Output terminal of the first end of each switch respectively with each ammeter connects one to one, and the second of each switch
The end current output terminal connection with described for being connected with electrical equipment to be tested respectively；Alternatively, the first end of each switch
The input terminal with each ammeter connects one to one respectively, and the second end of each switch is used to try out with to be measured with described respectively
The current input terminal connection of electric equipment connection；
When needing switching electric current table, the switch being connected with the target current table is first closed, with being beaten before switching
The switch for the ammeter connection opened is disconnected again.
Preferably, the switch is mechanical switch.
Preferably, the switch is electronic switch.
Preferably, the switch module includes multiple buttons and an electronic switch chip；
The electronic switch chip has multiple signal input parts, multiple current input terminals, multiple current output terminals；Each institute
Multiple signal input parts of the button respectively with each electronic switch chip are stated to connect one to one；
Output terminal of each current input terminal of the electronic switch chip respectively with each ammeter connects one to one, described
The current output terminal connection with described for being connected with electrical equipment to be tested respectively of each current output terminal of electronic switch chip；
Alternatively, each current input terminal of the electronic switch chip is defeated for the electric current that is connected with electrical equipment to be tested with described respectively
Enter end connection, the input terminal of each current output terminal of the electronic switch chip respectively with each ammeter connects one to one；
When needing switching electric current table, the button corresponding with target current table is triggered, the electronic switch chip
For first target current table to be opened in control under the triggering of the button, the ammeter of switching front opening is turned off.
Preferably, further include power supply；The power supply is connected with the electronic switch chip.
Preferably, the electronic switch chip further includes the communication port that information exchange is carried out with external equipment.
Preferably, the multiple ammeter includes DC ammeter and/or alternating current ammeter.
Preferably, at least one ammeter and the electric current for being connected with electrical equipment to be tested in each ammeter
Input terminal is detachably connected and is detachably connected with the input terminal of the switch module；
Alternatively, at least one ammeter is defeated for the electric current that is connected with electrical equipment to be tested with described in each ammeter
Outlet is detachably connected and is detachably connected with the output terminal of the switch module.
Preferably, the range of at least one ammeter is more than the maximum electricity of the electrical equipment to be tested in each ammeter
Stream.
The beneficial effects of the utility model are as follows：
In the current tester that the utility model embodiment provides, the ammeter there is provided different ranges is set with meeting electricity consumption
Standby different working condition or the testing current demand in the case of other, and the switch module for controlling each ammeter is provided with,
Test electrical equipment electric current when, if electrical equipment due to switch operating state or other reasons electric current occur large change, it is necessary to
During switching electric current table range, target current table (needing the ammeter being switched to) is first opened by switch module, is ensured at least
There are one ammeter in an ON state, come ensure electrical equipment will not power down, in running order always, nothing in test process
It need to restart repeatedly, convenient test, so as to improve testing efficiency.It, can be by opening also, in order to ensure that ammeter is not burned out
Close module, according to the order of ammeter range from big to small, switch over, can also according to the registration of the ammeter of larger range,
It determines the ammeter of suitable range, is directly switch to appropriate electrical flow table so that the measurement of electric current to be measured is very quick, and then makes
The measurement of the electric current of electrical equipment that must be larger to current fluctuation scope under different working condition is extremely convenient, is surveyed so as to improve
Try efficiency.
Description of the drawings
Fig. 1 a are a kind of structure diagram for current tester that the utility model embodiment provides；
Fig. 1 b are the structure diagram for another current tester that the utility model embodiment provides；
Fig. 2 a are the structure diagram for another current tester that the utility model embodiment provides；
Fig. 2 b are the structure diagram for another current tester that the utility model embodiment provides.
Reference numeral：
1- is used for the current input terminal of electrical equipment to be tested connection；Electric currents of the 2- for electrical equipment to be tested connection is defeated
Outlet；The more a ammeters of 3-；4- switch modules；41- is switched；The more a buttons of 42-；43- electronic switch chips；5- power supplys.
Specific embodiment
A kind of current tester provided by the utility model is described in detail with reference to the accompanying drawings and examples.
The utility model embodiment provides a kind of current tester, as shown in Figure 1 a, 1 b, including：
For the current input terminal 1 and current output terminal 2 being connected with electrical equipment to be tested；
Multiple ammeters 3；Wherein, the range of multiple ammeters 3 is different；
With multiple output terminals and the switch module at multiple input end 4；
Wherein, it is connected for the input terminal of the current input terminal 1 that is connected with electrical equipment to be tested respectively with each ammeter,
The output terminal of each ammeter connects one to one respectively with each input terminal of switch module 4, each output terminal difference of switch module 4
It is connected with for the current output terminal 2 that is connected with electrical equipment to be tested；Alternatively, for the electricity being connected with electrical equipment to be tested
Stream input terminal 1 is connected with each input terminal of switch module 4, each output terminal of switch module 4 input terminal with each ammeter respectively
It connects one to one, the output terminal of each ammeter connects respectively with for the current output terminal 2 that is connected with electrical equipment to be tested；
Switch module 4, for controlling the opening and closing of each ammeter；And it when needing switching electric current table, first controls
System opens target current table, turns off the ammeter when front opening.
Wherein, target current table refers to needing the ammeter being switched to.
In the current tester that the utility model embodiment provides, the switch that switch module 4 controls each ammeter is employed
41, when electrical equipment electric current is tested, if electrical equipment because of conversion work state or other reasons, cause electric current occur compared with
During big variation, first by switch module 4, adjustment current tester opens maximum range ammeter, reads what ammeter was shown
Electric current determines the suitable ammeter of range further according to electric current, and adjustment current tester is opened the ammeter of suitable range, turned off
Other ammeters measure accurate earth-current.It, should be by switch module 4, according to ammeter range in order to ensure that ammeter is not burned out
Order from big to small, switches over, while ensures at least one ammeter in an ON state, really to use electric equipment not
Meeting open circuit can be used normally.This current tester greatly facilitates larger to current fluctuation scope under different working condition
Electrical equipment electric current measurement.
In order to enable the application range of current tester is wider, preferably, multiple ammeters 3 include DC ammeter and/
Or alternating current ammeter.3 all DC ammeters of multiple ammeters of the first current tester, suitable for direct current electrical testing
Scene；3 all alternating current ammeters of multiple ammeters of second of current tester, suitable for the scene of alternating current test；The
Multiple ammeters 3 of three kinds of current testers include DC ammeter and alternating current ammeter, are not only suitable for the field of alternating current test
Scape is suitable for the scene of direct current electrical testing again, and application range is wider.In this manner it is possible to the electric current feelings according to electrical equipment to be tested
Condition, to select suitable current tester.
Wherein, there are many concrete structures of switch module 4, wherein several structures are set forth below.
The structure one of switch module 4：
Switch module 4 includes multiple switch 41；
Output terminal of the first end of each switch 41 respectively with each ammeter connects one to one, the second end of each switch 41 with
Current output terminal 2 for being connected with electrical equipment to be tested connects；Alternatively, respectively switch 41 first end respectively with each ammeter
Input terminal connect one to one, the second end of each switch 41 respectively with the electric current input for be connected with electrical equipment to be tested
1 connection of end；
When needing switching electric current table, the switch 41 being connected with target current table is first opened, and when the electric current of front opening
The switch 41 of table connection is closed again.
In the present embodiment, it is necessary to during switching electric current table, user is first closed switch corresponding with target current table, at this moment,
Target current table turns on, in the conduction state there are two ammeter, then disconnects the ammeter pair with switching front opening again
The switch answered, at this moment, the ammeter for switching front opening are shut off, and only remaining target current table is in the conduction state, this is cut
During changing, at least one ammeter is conducting always, ensures that electrical equipment will not power down.
The type of above-mentioned switch 41 also there are many.For example, switch 41 is mechanical switch.For another example switch 41 is electronic cutting
It closes.
The structure two of switch module 4：
As shown in Fig. 2 a, Fig. 2 b, switch module 4 includes multiple buttons 42 and an electronic switch chip 43；
Electronic switch chip has multiple signal input parts, multiple current input terminals, multiple current output terminals；Each button point
Multiple signal input parts not with each electronic switch chip 43 connect one to one；
Output terminal of each current input terminal of electronic switch chip 43 respectively with each ammeter connects one to one, electronic cutting
Each current output terminal for closing chip 43 connects respectively with for the current output terminal 2 that is connected with electrical equipment to be tested；It is alternatively, electric
Each current input terminal of sub switch chip 43 connects respectively with for the current input terminal 1 that is connected with electrical equipment to be tested, electricity
Input terminal of each current output terminal of 43, sub switch core respectively with each ammeter connects one to one；
When needing switching electric current table, button corresponding with target current table is triggered, and the electronic switch chip is used for
First target current table is opened in control under the triggering of the button, turns off the ammeter of switching front opening.
In the present embodiment, when needing switching electric current table, user corresponds to button by pressing target current table, to electronics
Switch chip sends trigger signal, after electronic switch chip receives signal, first control can turn on target current table, at this moment, mesh
The ammeter before ammeter and switching is marked all in conducting state, then disconnects the ammeter before switching again to complete ammeter
Switching, at this moment, the ammeter for switching front opening is shut off, and only remaining target current table is in the conduction state, this switched
Cheng Zhong, at least one ammeter is conducting always, ensures that electrical equipment will not power down.The switch module of the present embodiment
Structure in, it is only necessary to user carry out one-touch operation, it is possible to complete the switching of ammeter, the knot with switch module 4
Structure one is compared, and simplifies the operation of button.
Preferably, electronic switch chip 43 further includes the communication port that information exchange is carried out with external equipment.The communication ends
The setting of mouth carries out information exchange convenient for current tester and external equipment (such as computer, mobile phone), can also be directly by outer
Portion's equipment control electronic switch chip 43, to realize the switching between multiple ammeters 3 of current tester.
Preferably, the current tester that the utility model embodiment provides further includes power supply 5；Power supply 5 and electronic switch core
Piece 43 connects.The power supply 5 is used to provide working power for electronic switch chip 43.
It should be noted that the concrete structure of switch module 4 is not limited only to structure listed above, can also use other
Structure, as long as can ensure in the handoff procedure of ammeter, always at least one ammeter be conducting with ensures use
Electric equipment will not power down.
In view of in a kind of possible scene, ammeter damage or range are improper, can not complete the survey to electric current
Amount, preferably, at least one ammeter can with the current input terminal 1 for being used to be connected with electrical equipment to be tested in each ammeter
Dismantling connection, and be detachably connected with the input terminal of switch module 4；Alternatively, at least one ammeter is with using in each ammeter
It is detachably connected in the current output terminal 2 being connected with electrical equipment to be tested, and detachably connects with the output terminal of switch module 4
It connects.In this way, if ammeter damage or range are improper, it is possible to will quickly and easily damage or range is irrelevantly electric
Flow table disassembles, and replaces intact or suitable ammeter, and this structure is brought greatly for the use of current tester
Convenience and adaptability.
Preferably, in each ammeter of current tester, at least one ammeter range is more than electrical equipment to be tested
Maximum current.The larger ammeter of this range can first make when electrical equipment electric current to be tested varies widely
With for example, when needing to switch electrical equipment working condition to be tested, current tester can be first transferred to the electricity of maximum range
Flow table avoids electric current from increasing suddenly and burns out ammeter, then the order according to ammeter range from big to small, is switched one by one, directly
To measuring accurate electric current；The inaccurate electric current that can also be shown according to the ammeter of maximum range, to determine suitable electricity
Flow table is directly switch to suitable ammeter.
It is illustrated now with a kind of specific current tester：
In the present embodiment, a kind of current tester includes shell, the red electricity for being connected with electrical equipment to be tested
Flow input terminal, black be used for and the current output terminal of electrical equipment to be tested connection, the ammeter and four of four different ranges
A switch 41.
Generally, red to represent anode, black represents cathode.
Wherein, the range of four ammeters is respectively：20A、2A、200mA、20mA.
Wherein, switch 41 is mechanical switch.
Wherein, the input terminal of the ammeter of four different ranges connects red current input terminal respectively, four not same amounts
First end of the output terminal of the ammeter of journey respectively with four mechanical switch connects one to one, the second end of four mechanical switch
The current output terminal of black is connected respectively.
Wherein, the ammeter and four machineries of red current input terminal, the current output terminal of black, four different ranges
Switch is fixed on the shell.
During using the current tester, the current output terminal of red current input terminal and black is connected to first to be measured
In electrical equipment, the corresponding mechanical switch of ammeter that range is 20A is closed, opens electrical equipment to be measured, read electric current and represent
Number, for example, registration to be about 100mA, at this moment, is first closed range and is the corresponding mechanical switch of ammeter of 200mA, then disconnect
Range be 20A the corresponding mechanical switch of ammeter, at this moment, if range is suitable, can be tested, if find range compared with
Small, electric current is more than 200mA, and the corresponding mechanical switch of rapid closing 20A ammeters redefines appropriate electrical flow table, then again into
Row test.
When needing to change electrical equipment working condition, first it is closed range and is the corresponding mechanical switch of ammeter of 20A, then break
The corresponding mechanical switch of ammeter of other ranges is opened, reads ammeter registration, for example, registration is about 100mA, at this moment,
It is first closed range and is the corresponding mechanical switch of ammeter of 200mA, then disconnect the corresponding machinery of ammeter that range is 20A and open
It closes, at this moment, if range is suitable, can be tested, measurement is smaller if finding, electric current is more than 200mA, rapid closing 20A electricity
The corresponding switch 41 of flow table, redefines appropriate electrical flow table, is then tested again.
It is illustrated below exemplified by measuring vehicle electric current：
Vehicle accumulator is disconnected first, current tester is installed to corresponding position, is closed the ammeter that range is 20A and is corresponded to
Switch starts vehicle, observes ammeter registration, when ammeter registration drops to secondary electrical flow table measurement range, carries out electric current
The switching of table is closed secondary electrical flow table and corresponds to switch, disconnects the ammeter used before switching to inductive switch, operates according to this；It is if electric
Stream increase when electric current soon exceeds currently used ammeter range, carries out ammeter switching, is closed high level current table and corresponds to
Switch, ammeter operates inductive switch according to this before disconnecting switching；Curent change in different time sections is observed, whether judges vehicle
Normal work.
Wherein：
Secondary electrical flow table：Refer to than in currently used ammeter range smaller ammeter, the ammeter of range maximum.
High level current table：Refer to than in currently used ammeter range bigger ammeter, the ammeter of range minimum.
When the electric instrument device current of measurement：
Current tester is installed to corresponding position by off device power supply first, is closed the ammeter that range is 20A and is corresponded to
Switch, starting device, the registration for the ammeter that observation range is 20A if range is suitable, is attended school out registration and are recorded, no
Then, the switching of ammeter is carried out, is closed secondary range ammeter to inductive switch, the switch of the ammeter used before disconnection switching,
So cycle the electric current until measuring equipment.
Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality
New spirit and scope.If in this way, these modifications and variations of the utility model belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these modification and variations.
Claims (10)
1. a kind of current tester, which is characterized in that including：
For the current input terminal and current output terminal being connected with electrical equipment to be tested；
Multiple ammeters；Wherein, the range of the multiple ammeter is different；
Switch module with multiple output terminals and multiple input end；
Wherein, the input terminal for the current input terminal that is connected with electrical equipment to be tested respectively with each ammeter is connected,
The output terminal of each ammeter connects one to one respectively with each input terminal of the switch module, each output of the switch module
The end current output terminal connection with described for being connected with electrical equipment to be tested respectively；Alternatively, described be used to try out with to be measured
The current input terminal of electric equipment connection is connected with each input terminal of the switch module, each output terminal difference of the switch module
It connects one to one with the input terminal of each ammeter, the output terminal of each ammeter is used for and electrical equipment to be tested respectively with described
The current output terminal connection of connection；
The switch module, for controlling the opening and closing of each ammeter；And it when needing switching electric current table, first controls
Target current table is opened, turns off the ammeter of switching front opening.
2. current tester according to claim 1, which is characterized in that the switch module includes multiple switch；
Output terminal of the first end of each switch respectively with each ammeter connects one to one, the second end point of each switch
Current output terminal connection not with described for being connected with electrical equipment to be tested；Alternatively, the first end difference of each switch
It connects one to one with the input terminal of each ammeter, the second end of each switch is used to set with electricity consumption to be tested with described respectively
The current input terminal connection of standby connection；
When needing switching electric current table, the switch being connected with the target current table is first closed, with switching front opening
The switch of ammeter connection is disconnected again.
3. current tester according to claim 2, which is characterized in that the switch is mechanical switch.
4. current tester according to claim 2, which is characterized in that the switch is electronic switch.
5. current tester according to claim 1, which is characterized in that the switch module includes multiple buttons and one
Electronic switch chip；
The electronic switch chip has multiple signal input parts, multiple current input terminals, multiple current output terminals；It is pressed described in each
Multiple signal input parts of the key respectively with each electronic switch chip connect one to one；
Output terminal of each current input terminal of the electronic switch chip respectively with each ammeter connects one to one, the electronics
The current output terminal connection with described for being connected with electrical equipment to be tested respectively of each current output terminal of switch chip；Or
Person, each current input terminal electric current input with described for being connected with electrical equipment to be tested respectively of the electronic switch chip
End connection, the input terminal of each current output terminal of the electronic switch chip respectively with each ammeter connect one to one；
When needing switching electric current table, the button corresponding with target current table is triggered, and the electronic switch chip is used for
First target current table is opened in control under the triggering of the button, turns off the ammeter of switching front opening.
6. current tester according to claim 5, which is characterized in that further include power supply；The power supply and the electronics
Switch chip connects.
7. current tester according to claim 5, which is characterized in that the electronic switch chip is further included to be set with outside
The standby communication port for carrying out information exchange.
8. current tester according to claim 1, which is characterized in that the multiple ammeter includes DC ammeter
And/or alternating current ammeter.
9. current tester according to claim 1, which is characterized in that
At least one ammeter is removable for the current input terminal that is connected with electrical equipment to be tested with described in each ammeter
It unloads connection and is detachably connected with the input terminal of the switch module；
Alternatively, at least one ammeter and the current output terminal for being connected with electrical equipment to be tested in each ammeter
It is detachably connected and is detachably connected with the output terminal of the switch module.
10. current tester according to claim 1, which is characterized in that at least one ammeter in each ammeter
Range is more than the maximum current of the electrical equipment to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721527101.XU CN207396592U (en) | 2017-11-15 | 2017-11-15 | A kind of current tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721527101.XU CN207396592U (en) | 2017-11-15 | 2017-11-15 | A kind of current tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207396592U true CN207396592U (en) | 2018-05-22 |
Family
ID=62323638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721527101.XU Active CN207396592U (en) | 2017-11-15 | 2017-11-15 | A kind of current tester |
Country Status (1)
| Country | Link |
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| CN (1) | CN207396592U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116088A (en) * | 2018-10-16 | 2019-01-01 | 国网青海省电力公司西宁供电公司 | A kind of high precision electro electromagnetic type voltage transformer no-load current test device |
| CN110456145A (en) * | 2019-08-30 | 2019-11-15 | 江苏神剑机电科技有限公司 | A kind of multrirange power test system |
-
2017
- 2017-11-15 CN CN201721527101.XU patent/CN207396592U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116088A (en) * | 2018-10-16 | 2019-01-01 | 国网青海省电力公司西宁供电公司 | A kind of high precision electro electromagnetic type voltage transformer no-load current test device |
| CN110456145A (en) * | 2019-08-30 | 2019-11-15 | 江苏神剑机电科技有限公司 | A kind of multrirange power test system |
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