CN211402566U - Tester applied to lightning arrester test - Google Patents
Tester applied to lightning arrester test Download PDFInfo
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- CN211402566U CN211402566U CN201921875757.XU CN201921875757U CN211402566U CN 211402566 U CN211402566 U CN 211402566U CN 201921875757 U CN201921875757 U CN 201921875757U CN 211402566 U CN211402566 U CN 211402566U
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Abstract
The utility model discloses a tester applied to lightning arrester test, which comprises a shell, wherein a power supply device, a control mainboard, a high-voltage direct-current power supply and a current measuring instrument are arranged inside the shell, and a display screen, a negative polarity high-voltage end and a grounding end are arranged on the surface of the shell; the control main board is provided with a power supply input end, a monitoring control end and a signal input end, and the current measuring instrument is provided with a positive end and a negative end; the power supply device is respectively electrically connected with the power input end and the high-voltage direct current power supply, the high-voltage direct current power supply is respectively electrically connected with the monitoring control end and the positive terminal, the current measuring instrument is electrically connected with the signal input end, the display screen is electrically connected with the control mainboard, the negative polarity high-voltage terminal is electrically connected with the negative terminal, and the grounding terminal is connected with the ground wire. The embodiment of the utility model provides an in, the tester only needs wiring once, uses 1 instrument, and the measurement of 2 experimental project data is accomplished to a key, has improved work efficiency greatly.
Description
Technical Field
The utility model relates to an electricity field particularly, relates to a be applied to experimental tester of arrester.
Background
The zinc oxide arrester is an important protection unit in a power system, and the performance state of the zinc oxide arrester is related to the normal operation of a power grid. The handover and preventive test protocol made specific requirements for the test, and 2 test items, namely insulation resistance and leakage current I at voltage U1mA and 0.75U1mA at dc 1mA were carried out.
At present, 2 types of equipment including an insulation resistance tester and a direct current high voltage generator are needed to be used for developing the 2 test items, and the work can be completed only by disconnecting 2 lines; the problem is that two test items respectively need to use two devices to respectively carry out single test, wiring is repeated, the test process is complicated, and the test time is too long.
Therefore, a tester applied to lightning arrester tests is needed, which only needs one-time wiring and adopts one-key operation to simultaneously perform performance tests on the insulation resistance, the voltage U1mA under the direct current 1mA and the leakage current I under the voltage 0.75U1 mA.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, the utility model provides a be applied to experimental tester of arrester, this tester only needs wiring can carry out the leakage current I's under insulation resistance and the direct current 1mA voltage U1mA and the 0.75U1mA voltage capability test, saves operating time.
Correspondingly, the utility model provides a tester applied to arrester test, the tester includes the shell, the inside of shell is provided with mains operated device, control mainboard, high voltage direct current power supply and current measuring instrument, the surface of shell is provided with display screen, negative polarity high voltage terminal and earthing terminal;
the control main board is provided with a power supply input end, a monitoring control end and a signal input end, and the current measuring instrument is provided with a positive end and a negative end;
the power supply device is respectively electrically connected with the power input end of the control mainboard and the high-voltage direct current power supply, the high-voltage direct current power supply is respectively electrically connected with the monitoring control end of the control mainboard and the positive end of the current measuring instrument, the current measuring instrument is electrically connected with the signal input end of the control mainboard, the display screen is electrically connected with the control mainboard, the negative polarity high-voltage end is electrically connected with the negative end of the current measuring instrument, and the grounding end is connected with the ground wire.
As an optimized technical scheme of the utility model, the control mainboard is the industrial control mainboard, the model of industrial control mainboard is EC-5510-T.
As an optimal technical scheme of the utility model, the high voltage direct current power supply model is IT6000D-200, wherein:
the IT6000D-200 type high-voltage direct current power supply is connected with the monitoring control end of the control mainboard through an SPI bus.
As an optimized technical scheme of the utility model, current measuring instrument is the digital microampere of high voltage direct current table, the model of the digital microampere of high voltage direct current table is HD69-ZGSB-2mA, wherein:
the HD69-ZGSB-2mA type current measuring instrument is connected with the second connecting end of the control mainboard through an ISA bus.
As an optimal technical scheme of the utility model, the display screen pass through the I2C bus with control mainboard connection.
As a preferred technical scheme of the utility model, power supply unit is battery power supply unit, the battery model is DJW 1224.
The utility model provides a be applied to experimental tester of arrester, the beneficial effect that this tester reaches is: the utility model discloses only need wiring once, use 1 instrument, the measurement of 2 test item data is accomplished to a key, has improved work efficiency greatly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 shows a schematic composition diagram of a tester applied to a lightning arrester test in an embodiment of the present invention;
fig. 2 shows the utility model discloses be applied to experimental tester of arrester and the schematic diagram of being connected of arrester in the embodiment of the utility model.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 shows a schematic composition diagram of a tester applied to a lightning arrester test in an embodiment of the present invention; fig. 2 shows the utility model discloses be applied to experimental tester of arrester and the schematic diagram of being connected of arrester in the embodiment of the utility model.
The embodiment of the utility model provides a be applied to experimental tester of arrester, the tester includes the shell, the inside of shell is provided with mains operated device 1, control mainboard 4, high voltage direct current power supply 2 and current measuring instrument 3, the surface of shell is provided with display screen 5, negative polarity high-voltage terminal 51 and earthing terminal 52; the power supply device 1 provides power for each internal element of the tester; the high-voltage direct-current power supply 2 is responsible for boosting direct current to meet working voltage required by a lightning arrester test; the current measuring instrument 3 measures the current in the test loop; the control main board 4 controls the voltage of the high-voltage direct-current power supply 2 and simultaneously records the current value in the test loop measured by the current measuring instrument 3; the display screen 5 displays the data obtained by the control main board 4 and the processed experimental numerical results; the negative polarity high voltage end 51 and the grounding end are respectively connected with two ends of the lightning arrester 7.
The control main board 4 is provided with a power supply input end, a monitoring control end and a signal input end, and the current measuring instrument 3 is provided with a positive end and a negative end;
specifically, the power supply device 1 is electrically connected to the power input end and the high-voltage direct-current power supply 2, and provides power for the high-voltage direct-current power supply 2 and the control main board 4 based on the power supply device; the power supply connecting end is used for inputting a power supply to the control main board 4; the monitoring control end and the signal input end are connected with other electrical elements in the tester, and data interaction is carried out on the monitoring control end and the signal input end and the connected electrical elements in a wired communication mode.
Particularly, the power supply device 1 is a storage battery power supply device, and through the storage battery power supply device 1, the tester can charge the storage battery power supply device 1 by being connected with a 220V input end of a mains supply to achieve the purpose of recycling; the model of the storage battery power supply device 1 is DJW1224, the storage battery power supply device of the DJW1224 model is a maintenance-free storage battery which can be charged and discharged repeatedly, and meanwhile, the energy density is high.
Specifically, the high-voltage direct current power supply 2 is electrically connected with a monitoring control end of the control mainboard 4 and a positive end of the current measuring instrument 3 respectively, the high-voltage direct current power supply 2 obtains power from the power supply device 1 to provide high-voltage direct current for a test loop, and meanwhile, the high-voltage direct current power supply is electrically connected with the positive end to provide power for the current measuring instrument 3; the control main board 4 is connected with the high-voltage direct current power supply 2 in a wired mode based on the monitoring control end, and therefore the voltage generated by the high-voltage direct current power supply 2 is controlled.
Particularly, the high-voltage direct-current power supply 2 is in the type IT6000D-200, and the high-voltage direct-current power supply 2 in the type IT600D-200 can provide high-voltage direct current for a test circuit; the high-voltage direct current power supply 2 is connected with a monitoring control end of the control mainboard 4 through an SPI bus, the high-voltage direct current power supply 2 is in data interaction with the control mainboard 4 based on wired connection of the SPI bus, and the control mainboard 4 transmits a control instruction to the high-voltage direct current power supply 2 through the SPI bus to control the voltage of the test loop.
It should be noted that SPI is a high-speed and high-efficiency serial interface technology. The master module selects one slave module to perform synchronous communication, thereby completing data exchange.
Specifically, the current measuring instrument 3 is electrically connected to a signal input end of the control main board 4, and based on the connection of the current measuring instrument 3 and the signal input end, the measured test loop current value is sent to the control main board 4.
Particularly, the current side measuring instrument 3 is a high-voltage direct current digital microammeter, the high-voltage direct current digital microammeter 1 is used for accurately measuring the current in a test loop, the model of the high-voltage direct current digital microammeter is HD69-ZGSB-2mA, the range of the HD69-ZGSB-2mA high-voltage direct current digital microammeter meets the current fluctuation range of a lightning arrester test, and the current in the loop can be accurately measured with high precision and high energy; the current measuring instrument 3 is connected with the signal input end through an ISA bus, the current measuring instrument 3 and the control mainboard 4 carry out data interaction based on the ISA bus, and a measured current value is transmitted to the control mainboard 4 through the ISA bus.
It should be noted that the ISA is an ISA slot, which is an abbreviation of Industry Standard Architecture (ISA) slot, and is an ISA bus (ISA) bus-based expansion slot, which is generally black in color, longer than a PCI interface slot, and located at the lowest end of a motherboard. The working frequency is about 8MHz, the maximum transmission rate is 16MB/sec, and the expansion card such as a video card, a sound card, a network card and a so-called multifunctional interface card can be plugged.
Particularly, the control main board 4 is an industrial control main board which has good stability, can adapt to complex working environments and has longer service life; the model of the industrial control mainboard is EC-5510-T, the interfaces on the EC-5510-T industrial control mainboard are rich, and the compatibility is good, so that the industrial control mainboard is suitable for being in wired connection with a plurality of electrical elements.
Specifically, display screen 5 with control mainboard 4 electricity is connected, based on with display screen 5 connects, will control mainboard calculation record's current value and calculation result show, wherein, display screen 5 passes through the I2C bus with control mainboard 4 is connected, control mainboard 4 transmits the data of record and the result after handling by the I2C bus to display screen 5 shows and supplies the tester to carry out the record.
It should be noted that the I2C bus is a simple, bidirectional two-wire synchronous serial bus. It requires only two wires to transfer information between devices connected to the bus. The master device is used to initiate the bus to transfer data and to generate a clock to open up the devices that are transferring, when any addressed device is considered a slave device. If the host wants to send data to the slave device, the host addresses the slave device first, then actively sends the data to the slave device, and finally the host terminates the data transmission; the master device addresses the slave device first if the master device is to receive data from the slave device. The host is responsible for generating the timing clock and terminating the data transfer.
Specifically, the negative polarity high-voltage terminal 51 is connected with a negative terminal of the current tester 3, and the ground terminal 52 is connected with a ground wire; the tester is connected with one end of the lightning arrester 7 to be tested through the negative polarity high-voltage end 51, the grounding end 52 is connected with the other end of the lightning arrester 7 to be tested, so that a testing loop is formed, and current is output from the negative polarity high-voltage end to pass through the lightning arrester 7 to be tested during testing, then returns to the grounding end and is released by a ground wire.
The utility model discloses the beneficial effect who brings: the tester can simultaneously carry out insulation resistance test and test direct current leakage test by internally arranging the high-voltage direct current power supply 2 and the direct current measuring instrument 3; only once wiring is needed, 1 instrument is used, the measurement of 2 test project data is completed by one key, and the working efficiency is greatly improved.
In addition, the above detailed description is made on the tester applied to the lightning arrester test provided by the embodiment of the present invention, and the principle and the implementation mode of the present invention shall be explained by using a specific example, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (6)
1. The tester applied to the lightning arrester test is characterized by comprising a shell, wherein a power supply device, a control mainboard, a high-voltage direct-current power supply and a current measuring instrument are arranged inside the shell, and a display screen, a negative polarity high-voltage end and a grounding end are arranged on the surface of the shell;
the control main board is provided with a power supply input end, a monitoring control end and a signal input end, and the current measuring instrument is provided with a positive end and a negative end;
the power supply device is respectively electrically connected with the power input end of the control mainboard and the high-voltage direct current power supply, the high-voltage direct current power supply is respectively electrically connected with the monitoring control end of the control mainboard and the positive end of the current measuring instrument, the current measuring instrument is electrically connected with the signal input end of the control mainboard, the display screen is electrically connected with the control mainboard, the negative polarity high-voltage end is electrically connected with the negative end of the current measuring instrument, and the grounding end is connected with the ground wire.
2. The tester of claim 1, wherein the control motherboard is an industrial control motherboard having a model number EC-5510-T.
3. The tester of claim 1, wherein the high voltage dc power supply is of a type IT6000D-200, wherein:
the IT6000D-200 type high-voltage direct current power supply is connected with the monitoring control end of the control mainboard through an SPI bus.
4. The tester of claim 1, wherein the current measuring instrument is a high voltage direct current digital microammeter of the type HD69-ZGSB-2mA, wherein:
the HD69-ZGSB-2mA type current measuring instrument is connected with the signal input end of the control mainboard through an ISA bus.
5. The tester as claimed in claim 1, wherein the display screen is connected to the control motherboard via an I2C bus.
6. The meter of claim 1, wherein the power supply is a battery powered device having a model number DJW 1224.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921875757.XU CN211402566U (en) | 2019-11-01 | 2019-11-01 | Tester applied to lightning arrester test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921875757.XU CN211402566U (en) | 2019-11-01 | 2019-11-01 | Tester applied to lightning arrester test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211402566U true CN211402566U (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921875757.XU Active CN211402566U (en) | 2019-11-01 | 2019-11-01 | Tester applied to lightning arrester test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211402566U (en) |
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2019
- 2019-11-01 CN CN201921875757.XU patent/CN211402566U/en active Active
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