CN207937518U - Intelligent three-phase long distance loop resistance test device - Google Patents
Intelligent three-phase long distance loop resistance test device Download PDFInfo
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- CN207937518U CN207937518U CN201721888229.9U CN201721888229U CN207937518U CN 207937518 U CN207937518 U CN 207937518U CN 201721888229 U CN201721888229 U CN 201721888229U CN 207937518 U CN207937518 U CN 207937518U
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Abstract
The utility model is related to a kind of intelligent three-phase long distance loop resistance test device, include test main frame and with the matched terminal control unit of the test main frame；The test main frame includes the host side three-phase line voltage measurement connecting terminal being connected with three-phase long distance loop resistance to be detected, the host side three-phase line electric current output wiring terminal, the first microcontroller, touch display screen and the first telecommunication circuit that are connected with three-phase long distance loop resistance to be detected；Terminal control unit includes the terminal three-phase line voltage measurement connecting terminal being connected with three-phase long distance loop resistance to be detected, the terminal three-phase line electric current output wiring terminal, the second micro-control processor and the second radio communication circuit that are connected with three-phase long distance loop resistance to be detected；First radio communication circuit is matched with the second radio communication circuit.The utility model proposes a kind of intelligent three-phase long distance loop resistance test device, have the advantages of simple structure and easy realization.
Description
Technical field
The utility model is related to a kind of intelligent three-phase long distance loop resistance test devices.
Background technology
Existing ac voltage withstanding testing equipment is directed to electrical equipment pressure test of the voltage in 10kV or more, experiment electricity mostly
Pressure is more than 50kV, and capacity is more than 3kVA, is made of operating device and increasing apparatus, and monomer assays installation weight is more than 50 kilograms,
And need external power supply.Lack the special equipment of the ac voltage withstanding experiment for live low pressure low capacity test product in the market.Current electricity
The ac voltage withstanding testing equipment of gas equipment mostly uses industrial frequency withstand voltage testing equipment and Resonance Voltage Withstand Test equipment.Both experiments are set
It is standby high for test voltage（10kV above electrical equipment pressure tests）, the big electrical equipment ac voltage withstanding examination of capacity
It tests.The weight weight of equipment single-piece, volume are big, and when use needs more people to coordinate to carry, or even crane is needed to assemble, it is necessary to using outer
Connect power supply.
Invention content
The purpose of this utility model is to provide a kind of intelligent three-phase long distance loop resistance test devices, existing to overcome
There is defect present in technology.
To achieve the above object, the technical solution of the utility model is：A kind of intelligent three-phase long distance loop resistance examination
Experiment device, including a test main frame and a terminal control unit；The test main frame includes one first outer housing, outside described first
The upper left-hand of the front end face of shell offer groove for host side three-phase line voltage measurement connecting terminal to be arranged and
Groove for host side three-phase line electric current output wiring terminal to be arranged；The host side three-phase line voltage measurement terminals
Son be set in first outer housing signal filter circuit and analog to digital conversion circuit be connected to and be set to described first
The first micro-control processor in outer housing；The host side three-phase line current measurement connecting terminal is set to described first through one
Direct current output control loop and a DC current source generator in outer housing are connected to first micro-control processor；It is described
First micro-control processor is also connected with the first radio communication circuit being set in first outer housing；The test main frame is also
It is opened in the first outer housing lower front right groove including being set to and is connected with first micro-control processor
Touch display；
The terminal control unit includes a second housing body, and the top of the front end face of the second housing body opens up useful
In the groove of setting terminal three-phase line voltage measurement connecting terminal, the lower part of the front end face of the second housing body is for being arranged
The groove of terminal three-phase line electric current output wiring terminal；The terminal three-phase line voltage measurement connecting terminal and it is set to institute
The voltage changeover switch stated in second housing body is connected；It the terminal three-phase line electric current output wiring terminal and is set to described
Current changeover switch in second housing body is connected；The control terminal of the voltage changeover switch is connected through the first relay driver
To the second microcontroller being set in the second housing body；The control terminal of the current changeover switch is driven through the second relay
Dynamic device is connected to second microcontroller；Second micro-control processor also be set in the second housing body and with institute
Matched second radio communication circuit of the first radio communication circuit is stated to be connected；
Every phase voltage in the host side three-phase line voltage measurement connecting terminal measures connecting terminal through connection cables
It is connected to one end that three-phase long distance loop resistance to be detected corresponds to phase；The host side three-phase line electric current output wiring terminal
In every phase current output wiring terminal be connected to the three-phase long distance loop resistance to be detected through connection cables and correspond to phase
One end；It is long that every phase voltage measurement connecting terminal of the terminal three-phase line voltage measurement connecting terminal is connected to three-phase to be detected
The other end of phase is corresponded to apart from loop resistance；Every phase current output connection of the terminal three-phase line electric current output wiring terminal
Terminal is connected to the other end that three-phase long distance loop resistance to be detected corresponds to phase.
In one embodiment of the utility model, the test main frame further includes being set to be opened on first outer housing
Switch, power input terminals in portion's right groove and ground connection terminals；The power input terminals and it is set to institute
The power circuit stated in the first outer housing is connected；The power circuit is also connected with first micro-control processor；The switch
It is connected with the power circuit.
In one embodiment of the utility model, the test main frame further includes being set to right side in the middle part of first outer housing
The serial ports terminals being connected in through-hole and with first microcontroller respectively are wirelessly communicated with USB interface and with described first
The connected antenna of circuit.
In one embodiment of the utility model, the test main frame further includes being set to be opened in first outer housing
The printer being connected in lower front left groove and with first micro-control processor.
The terminal control unit further includes being set in the second housing body and being connected with second micro-control processor
Lithium battery source circuit and the charging circuit that is connected with the lithium battery source circuit；The side of the second housing body opens up
It is useful for that the through-hole of the charging circuit charging terminals is arranged.
In one embodiment of the utility model, the left and right ends of the front side of first outer housing are fixedly installed respectively to be carried
Hand.
In one embodiment of the utility model, the terminal control unit further includes being set to be opened in the second housing body
The battery capacity indication LED light being connected in leading flank through-hole and with second micro-control processor.
Compared to the prior art, the utility model has the advantages that：A kind of intelligence that the utility model is proposed
Type three-phase long distance loop resistance test device, has the advantages of simple structure and easy realization, it is portable, small to realize ac voltage withstanding experimental provision
Type, intelligence single can carry operation test, Field AC Withstand Voltage Test efficiency are greatly improved, can electrically pacify at the scene
It is applied in adjustment trial work journey.
Description of the drawings
Fig. 1 is the structural schematic diagram of test main frame in the utility model.
Fig. 2 is the structural schematic diagram of terminal control unit in the utility model.
Fig. 3 is the circuit diagram of test main frame in the utility model.
Fig. 4 is the circuit diagram of terminal control unit in the utility model.
Fig. 5 is the connection diagram of three-phase long distance loop resistance to be detected in the utility model.
Specific implementation mode
Below in conjunction with the accompanying drawings and existing software, the technical solution of the utility model is specifically described.In the explanation
Involved existing software is not the object that the utility model is protected in the process, and the utility model only protects the knot of the device
Structure and connection relation.
The utility model provides a kind of intelligent three-phase long distance loop resistance test device, as shown in Figures 1 to 4, packet
Include a test main frame and a terminal control unit；Test main frame include one first outer housing 1, the front end face of the first outer housing it is upper
Groove 2 for host side three-phase line voltage measurement connecting terminal to be arranged is offered on the left of portion and for host side three to be arranged
The groove 3 of phase line electric current output wiring terminal；Host side three-phase line voltage measurement connecting terminal is set in the first shell
Internal signal filter circuit and analog to digital conversion circuit is connected to the first micro-control processor being set in the first outer housing；It is main
Generator terminal three-phase line current measurement connecting terminal is set to direct current output control loop in the first outer housing and always through one
Stream current source generator is connected to the first micro-control processor；First micro-control processor also be set in the first outer housing first
Radio communication circuit is connected；Test main frame further includes being set to be opened in the first outer housing lower front right groove and with the
The connected touch display 4 of one micro-control processor.The touch display provides human-computer interaction interface and test data is shown.
In the present embodiment, host side three-phase line voltage measurement connecting terminal uses 4mm banana bin connecting terminals, main
Generator terminal three-phase line electric current output wiring terminal uses JXZ-5C caps flat greatly（100~200A）Connecting terminal, signal filter circuit
Using RC low-pass filter circuits, analog to digital conversion circuit includes an AD7705, and the first micro-control processor uses STM32F103RC, directly
It includes a HFE22-A to flow output control circuit, and DC current source generator includes a 100A, and the first radio communication circuit includes one
RF433M modules, touch display use one 3.5 cun of displays.
Further, terminal control unit includes a second housing body 5, and the top of the front end face of second housing body offers
Groove 6 for terminal three-phase line voltage measurement connecting terminal to be arranged, the lower part of the front end face of second housing body is for being arranged
The groove 7 of terminal three-phase line electric current output wiring terminal；Terminal three-phase line voltage measurement connecting terminal and it is set to second
Voltage changeover switch in outer housing is connected；It terminal three-phase line electric current output wiring terminal and is set in second housing body
Current changeover switch is connected；The control terminal of voltage changeover switch is connected to through the first relay driver and is set to second housing body
The second interior microcontroller；The control terminal of current changeover switch is connected to the second microcontroller through the second relay driver；The
Two micro-control processors also be set in second housing body and with matched second radio communication circuit of the first radio communication circuit
It is connected.
In the present embodiment, terminal three-phase line voltage measurement connecting terminal uses 4mm banana bin connecting terminals, terminal
Three-phase line electric current output wiring terminal uses JXZ-5C caps flat greatly（100~200A）Connecting terminal, voltage changeover switch use
HFE27/005, current changeover switch use HFE22-A, the first relay driver to use ULN2003, the second relay driving
Device, which is cut out, uses ULN2003, and the second microcontroller uses STM32F103RC, the second radio communication circuit to use RF433M modules.
Further, as shown in figure 5, every phase voltage in host side three-phase line voltage measurement connecting terminal measures wiring
Terminal is connected to one end that three-phase long distance loop resistance to be detected corresponds to phase through connection cables；Host side three-phase line electric current is defeated
The every phase current output wiring terminal gone out in connecting terminal is connected to three-phase long distance loop resistance pair to be detected through connection cables
Answer one end of phase；Every phase voltage of terminal three-phase line voltage measurement connecting terminal measures connecting terminal and is connected to three-phase to be detected
Long distance loop resistance corresponds to the other end of phase；Every phase current outlet terminal of terminal three-phase line electric current output wiring terminal
Son is connected to the other end that three-phase long distance loop resistance to be detected corresponds to phase.
Further, in the present embodiment, test main frame further includes being set to that be opened in the first outer housing upper right recessed
Switch, power input terminals and ground connection terminals in slot and for opening and closing power supply.As shown in Figure 1, being separately positioned on out
It closes 10 in groove 8, power input terminals groove 9 and ground wire terminals groove.Power input terminals and it is set to the
Power circuit in one outer housing is connected；Power circuit is also connected with the first micro-control processor；Switch is connected with power circuit.
Further, in the present embodiment, test main frame further include be set in the middle part of the first outer housing in the through-hole of right side and
The radio frequency day that the serial ports terminals being connected respectively with the first microcontroller are connected with USB interface and with the first radio communication circuit
Line SMA antennas.As shown in Figure 1, being respectively arranged at serial ports terminals through-hole 11, USB interface through-hole 12 and day line three-way hole 13.
Further, in the present embodiment, test main frame further includes being set to the lower front for being opened in the first outer housing
Be connected the printer for printing test data in left groove and with the first micro-control processor.As shown in Figure 1, setting is printing
In machine groove 14.In the present embodiment, which uses minitype thermal printer.
Further, in the present embodiment, terminal control unit further include be set in second housing body and with the second micro-control
Charging circuit processor connected lithium battery source circuit and be connected with the lithium battery source circuit；The side of second housing body
Face offers the through-hole 15 for charging circuit charging terminals to be arranged.
Further, in the present embodiment, the left and right ends of the front side of the first outer housing are fixedly installed are useful for taking respectively
The handle 16 of band.
Further, in the present embodiment, terminal control unit further includes being set to that be opened in second housing body leading flank logical
The battery capacity indication LED light being connected in hole 17 and with the second micro-control processor.
Further, in the present embodiment, test main frame：AC power：220V ± 10%, 50/60 HZ, 5A；Test
Electric current：>100A；Testing range：20m Ω/50A, 10m Ω/100A, 1 Ω/5A；Measuring accuracy：R<20mΩ,0.5%; 20mΩ<
R < 1Ω,1%.Terminal control unit：Specified control electric current：100A；Battery：8.4V/2200mAH；Cruise duration：>10 hours；It fills
The electric time：3 hours；Charge power supply：Special 8.4V/1A chargers；Slave connecting communication range >=500m.
Further, in the present embodiment, it is wirelessly communicated by the first micro-control processor and first by test main frame
Circuit sends test A phase commands to terminal control unit, and waits terminal to be answered wireless by the second micro-control processor and second
After telecommunication circuit response, test main frame tests electric current by DC current source generator and the output of DC current source generator,
And by voltage measurement connecting terminal collection voltages, and measure A phase resistance values.It completes the subsequent supervention of A phases and send test b phase command,
And wait to be answered, then test b phase.C phase test commands are sent, C phase resistances are measured, until terminating.If terminal is unresponsive, stop
Only measure work.
Further, in the present embodiment, which is also equipped with following advantage：
（1）The output voltage of intelligent three-phase long distance loop resistance test dress is not more than 5V, and capacity is not more than 500VA.
Exploitation is not necessarily to external power supply, light-weight, small alternating-current voltage resistance test device.Greatly improve the friendship of live low capacity test product
Pressure test efficiency is flowed, the labor intensity of debugging efforts is reduced.
（2）Lithium battery power supply, chargeable recycling are used using bias direct current power supply；Frequency control part is using amplification
Device sine-wave power realized by push-pull amplifier circuit, and waveform is pure to ensure to obtain, and the minimum sine wave of the distortion factor is defeated
Go out grade without large-scale filter element, boosting part is using small-sized special excitation-transformation variable boosting.
（3）It is portable, small-sized, intelligent, it single can carry operation test.It can be at the scene in electrical installation and debugging engineering
Using.
（4）Variable-frequency power sources output can be exported independently, and can multipurpose use.
It is the preferred embodiment of the utility model above, it is all to change according to made by technical solutions of the utility model, it is produced
Function without departing from technical solutions of the utility model range when, belong to the scope of protection of the utility model.
Claims (7)
1. a kind of intelligent three-phase long distance loop resistance test device, which is characterized in that eventually including a test main frame and one
Side controller；The test main frame includes one first outer housing, and the upper left-hand of the front end face of first outer housing offers
Groove for host side three-phase line voltage measurement connecting terminal to be arranged and defeated for host side three-phase line electric current to be arranged
Go out the groove of connecting terminal；The host side three-phase line voltage measurement connecting terminal is set in first outer housing
Signal filter circuit and analog to digital conversion circuit are connected to the first micro-control processor being set in first outer housing；It is described
Host side three-phase line electric current output wiring terminal through one be set to the direct current output control loop in first outer housing with
And one DC current source generator be connected to first micro-control processor；First micro-control processor also be set to it is described
The first radio communication circuit in first outer housing is connected；The test main frame further includes being set to be opened in first shell
The touch display being connected in body lower front right groove and with first micro-control processor；
The terminal control unit includes a second housing body, and the top of the front end face of the second housing body is offered for being arranged
The groove of terminal three-phase line voltage measurement connecting terminal, the lower part of the front end face of the second housing body is for being arranged terminal three
The groove of phase line electric current output wiring terminal；The terminal three-phase line voltage measurement connecting terminal and it is set to described second
Voltage changeover switch in outer housing is connected；It the terminal three-phase line electric current output wiring terminal and is set to outside described second
Current changeover switch in shell is connected；The control terminal of the voltage changeover switch is connected to setting through the first relay driver
The second micro-control processor in the second housing body；The control terminal of the current changeover switch is through the second relay driver
It is connected to second micro-control processor；Second micro-control processor also be set in the second housing body and with it is described
Matched second radio communication circuit of first radio communication circuit is connected；
Every phase voltage in the host side three-phase line voltage measurement connecting terminal measures connecting terminal and is connected through connection cables
One end of phase is corresponded to three-phase long distance loop resistance to be detected；In the host side three-phase line electric current output wiring terminal
Per phase current output wiring terminal one end that the three-phase long distance loop resistance to be detected corresponds to phase is connected to through connection cables；
Every phase voltage of the terminal three-phase line voltage measurement connecting terminal measures connecting terminal and is connected to three-phase to be detected over long distances
Loop resistance corresponds to the other end of phase；Every phase current output wiring terminal of the terminal three-phase line electric current output wiring terminal
It is connected to the other end that three-phase long distance loop resistance to be detected corresponds to phase.
2. a kind of intelligent three-phase long distance loop resistance test device according to claim 1, which is characterized in that described
Test main frame further include be set to the switch being opened in the first outer housing upper right groove, power input terminals with
And ground connection terminals；The power input terminals are connected with the power circuit being set in first outer housing；The electricity
Source circuit is also connected with first micro-control processor；The switch is connected with the power circuit.
3. a kind of intelligent three-phase long distance loop resistance test device according to claim 1, which is characterized in that described
Test main frame further include be set in the middle part of first outer housing in the through-hole of right side and respectively with the first micro-control processor phase
The antenna that serial ports terminals even are connected with USB interface and with first radio communication circuit.
4. a kind of intelligent three-phase long distance loop resistance test device according to claim 1, which is characterized in that described
Test main frame further include be set to be opened in the lower front left groove of first outer housing and with first micro-control
The connected printer of processor.
5. a kind of intelligent three-phase long distance loop resistance test device according to claim 1, which is characterized in that described
The left and right ends of the front side of first outer housing are fixedly installed handle respectively.
6. a kind of intelligent three-phase long distance loop resistance test device according to claim 1, which is characterized in that described
Terminal control unit further include be set to be opened in the second housing body leading flank through-hole and with second micro-control processor
Connected battery capacity indication LED light.
7. according to a kind of intelligent three-phase long distance loop resistance test device described in claim 1, which is characterized in that the end
Side controller further includes being set to the lithium battery power supply electricity being connected in the second housing body and with second micro-control processor
Road and the charging circuit being connected with the lithium battery source circuit；The side of the second housing body offers described for being arranged
The through-hole of charging circuit charging terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721888229.9U CN207937518U (en) | 2017-12-29 | 2017-12-29 | Intelligent three-phase long distance loop resistance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721888229.9U CN207937518U (en) | 2017-12-29 | 2017-12-29 | Intelligent three-phase long distance loop resistance test device |
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| Publication Number | Publication Date |
|---|---|
| CN207937518U true CN207937518U (en) | 2018-10-02 |
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ID=63647309
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721888229.9U Active CN207937518U (en) | 2017-12-29 | 2017-12-29 | Intelligent three-phase long distance loop resistance test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596892A (en) * | 2018-12-20 | 2019-04-09 | 陕西意联电气设备有限公司 | A kind of combined electric switches conductive loop resistance method for fast measuring and device |
-
2017
- 2017-12-29 CN CN201721888229.9U patent/CN207937518U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596892A (en) * | 2018-12-20 | 2019-04-09 | 陕西意联电气设备有限公司 | A kind of combined electric switches conductive loop resistance method for fast measuring and device |
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