CN115684875A - High-efficiency calibration platform and calibration method based on low-voltage protection measurement and control device - Google Patents
High-efficiency calibration platform and calibration method based on low-voltage protection measurement and control device Download PDFInfo
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- CN115684875A CN115684875A CN202211260129.7A CN202211260129A CN115684875A CN 115684875 A CN115684875 A CN 115684875A CN 202211260129 A CN202211260129 A CN 202211260129A CN 115684875 A CN115684875 A CN 115684875A
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Abstract
The invention discloses an efficient checking platform based on a low-voltage protection measurement and control device, and relates to the technical field of power supply and distribution. The high-efficiency calibration platform based on the low-voltage protection measurement and control device and the calibration method can reduce the workload of setting up a test line when the protection measurement and control device is calibrated through an integrated test loop, simultaneously, the functions of all the protection devices can be calibrated at one time, the wiring mode does not need to be changed, the more the number of the calibrated measurement and control devices is, the larger the overall reduced workload is, the time for testing is greatly shortened, the safety of the test loop is improved, the test platform is used for setting up an open-in test loop of the protection devices, and the open-in test loop can be independently set up to carry out open-in test on open-in channels of the protection measurement and control devices.
Description
Technical Field
The invention relates to the technical field of power supply and distribution, in particular to an efficient verification platform and a verification method based on a low-voltage protection measurement and control device.
Background
In the field of power supply and distribution, a low-voltage switch is the most basic equipment for supplying power to a load, and widely exists in any field of society, engineers often install a 'low-voltage protection measurement and control device' for the low-voltage switch of an important load to realize various protection functions of the load, and regulations stipulate that the low-voltage protection measurement and control device needs to be completely checked once every 4-6 years of operation to confirm that all functions of the device are intact and can be continuously used;
the existing calibration method is that a protection calibrator establishes a test loop to be connected with a tested device, and tests the 'input function', 'output function', 'analog quantity sampling', 'various protection logics' and the like of the protection device respectively, wiring needs to be reconnected when each function test is completed, and because a wiring terminal of the tested protection device is not matched with a terminal of the protection calibrator, a patch cord needs to be manufactured frequently during field work, time and labor are wasted, the wrapping is not tight, electric shock risks exist, the protection device has more functions and more wiring terminals, and a circuit needs to be repeatedly modified to complete the test; the test wire of the protection tester is longer and thicker, is not matched with a wiring terminal of a tested protection device, needs to be additionally provided with an adapter, and is easy to fall off under tension when the heavy test wire is connected to the terminal of the tested device, so that the time consumption for lapping a test circuit on site is longer;
therefore, the existing calibration equipment of the low-voltage protection monitoring device has the following problems: wiring is complicated, and is consuming time long, needs to inspect repeatedly, and the equipment damage and the personal electric shock injury of making because of wrong wiring appear easily, when being surveyed protection device quantity when huge, above shortcoming just is more showing.
Therefore, an efficient verification platform and a verification method based on a low-voltage protection measurement and control device are provided so as to solve the problems.
Disclosure of Invention
The invention aims to provide an efficient calibration platform and a calibration method based on a low-voltage protection measurement and control device, and aims to solve the problems that the calibration equipment of the low-voltage protection monitoring device in the current market is complex in wiring, long in time consumption, complex in measurement method steps, low in efficiency and lack of a clamping mechanism in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high-efficient check-up platform based on low pressure protection measurement and control device, whole part is installed on an electric backplate, electric backplate is installed in the casing, the casing is used for protecting this electric platform, this check-up platform includes bee calling organ and pilot lamp, the two is connected with the part of opening of the test terminal of the device under test through the circuit, wherein the test terminal is for pulling out plug-in terminal, can be connected with the socket of the device under test is supporting, total supply socket's N line is direct to be connected with the zero line input of the power part of test terminal, the L line is connected with test bench power button, the back is pressed to the button, the L line is connected with the live wire input of the power part of test terminal all the way, the two-way of L line is connected with button switch's public end, as the power of opening of button switch switching value, the inside clamping mechanism that is provided with of casing, clamping mechanism is used for fixing a position the centre gripping to the device under test.
By adopting the technical scheme, the workload of setting up a test line when the protection measurement and control device is verified can be reduced through the integrated test loop, simultaneously, the functions of all the protection devices can be verified at one time, the wiring mode is not required to be changed, and the open-in test can be independently performed on the open-in channel of the protection measurement and control device; test platform in this patent is carrying out protection device's the volume of opening when testing, and supporting buzzer and status indicator lamp of having set up compares traditional way of measuring terminal output with the universal meter, and is simpler, effective, conveniently tests the device.
As a preferable technical scheme of the invention, the side surface of the shell is provided with 4 adjustable bases, and the adjustable bases are symmetrically arranged in front and back and left and right around the center of the lower end of the shell.
By adopting the technical scheme, the device can be provided with the base adjusting mechanism, the bottom and the ground position of the shell can be adjusted by adjusting the adjustable base, and the device is ensured not to shake or incline.
As a preferable technical scheme of the invention, the lower end of the shell is provided with 4 pulleys, and the pulleys are symmetrically arranged in front and back and left and right around the center of the lower end of the shell.
By adopting the technical scheme, the device can be provided with the moving mechanism, the shell can be transported and moved by pushing the pulley, and the transportation efficiency is improved.
As a preferable technical scheme of the invention, the front side of the shell is provided with a concave cavity, the front side of the shell is provided with a rotating door through a hinge, and the rotating door and the shell are self-locked through a clamping piece.
Adopt above-mentioned technical scheme to make the device possess protective structure, be favorable to closing when not using through setting up the revolving door to avoid the dust foreign matter to get into in the casing.
As a preferable technical scheme of the invention, the lower end of the shell is provided with a cavity, a partition plate is arranged in the cavity, and the upper end of the partition plate is provided with a collecting box used for placing a tested device.
By adopting the technical scheme, the device can be provided with the storage mechanism, and the tested device can be conveniently placed by arranging the collecting box.
As a preferable technical scheme of the invention, the lower end of the collecting box is provided with a roller, the side surface of the collecting box is provided with a handle, and the surface of the handle is provided with anti-skid grains.
By adopting the technical scheme, the device is convenient to operate and use, the idler wheels are arranged at the lower end of the collecting box, the idler wheels can be pulled by the hand-pull handle to move conveniently, and therefore the collecting box can be taken and placed conveniently.
As a preferred aspect of the present invention, the clamping mechanism includes: the upper end of casing is provided with the anchor clamps platform, and the upper end of anchor clamps platform is provided with electric putter to electric putter's axle head is connected with the clamp splice, the inboard of clamp splice is provided with anti-skidding line, and the upper end of anchor clamps platform is provided with 2 stoppers, and the interval of stopper equals the width of being tried on the device.
Adopt above-mentioned technical scheme to make the device possess fixture, can utilize electric putter to promote the clamp splice to the device under test centre gripping, and the stopper is used for carrying out the secondary spacing to the device under test.
As a preferable technical scheme of the invention, the lower end of the clamp table is provided with a fixed shaft which is rotationally connected with the rotating table, the left side of the upper end of the rotating table is fixedly provided with a first motor, the shaft end of the first motor is in key connection with the fixed shaft, the lower end of the rotating table is in key connection with the shaft end of a second motor, and the lower end of the second motor is fixedly arranged in the shell.
Adopt above-mentioned technical scheme can make the device possess and rotate adjustment mechanism, can drive the fixed axle rotation through starting first motor to it is rotatory to drive anchor clamps platform vertical direction, starts the second motor and can drive revolving stage and anchor clamps platform horizontal direction rotation, and the convenient angular position who is tried the device as required of adjusting.
As a preferred technical solution of the present invention, the verification method includes: placing a tested device on a fixture table, pushing a clamping block to move by an electric push rod, clamping the tested device by the clamping block, recording the model and terminal definition of the tested device, adjusting a line concentration socket to the wiring position on a test terminal according to the terminal definition, connecting a voltage quantity output line of an external protection calibrator to a voltage input terminal of the integrated calibration platform, connecting a current quantity output line of the external protection calibrator to a current input terminal of the integrated calibration platform, respectively connecting a line concentration plug for transmitting analog quantity and switching quantity with the line concentration socket and fixing the line concentration plug, inserting a power supply into a main power socket, pressing a power button of the test table, electrifying the whole integrated calibration platform, checking the electrifying condition of the tested device, checking whether the tested device operates normally, and respectively carrying out the following test steps after the normal test:
the first step, analog quantity test: the current input terminals are respectively connected with: 0A, 20% in, 50% in, 100% in, reading the current sample display value on the device under test, and applying to the voltage input terminal: 0V, 20% Un, 50% Un, 100% Un, the Un is rated voltage of the tested device, and the display values of the voltage samples are read on the tested device respectively;
step two, input quantity testing: sequentially closing K1, K2 and K3 … … of the button switch, and checking the input display of the tested device;
step three, verifying the protection function: checking a protection action message of the tested device by adding analog voltage and current under the accident condition to the voltage input terminal and the current input terminal, and simultaneously checking whether a buzzer of the integrated inspection platform makes a sound to represent that the tested device normally sends a tripping command, so that all protection functions are sequentially verified;
step four, checking control logic: the method comprises the steps that an external switching-on command is simulated by closing a corresponding switch of a button switch, whether an indicator lamp is lightened or not is checked to represent that a tested device normally sends out a switching-on command, and an external switching-off command is simulated by closing a corresponding switch of the button switch, whether the indicator lamp is extinguished or not is checked to represent that the tested device normally sends out a switching-off command;
and fifthly, after the test is completed, attaching a qualified certificate to the tested device which is qualified in the test, taking down the tested device and installing the tested device back to the original switch mechanism, and testing the next tested device with the same model without changing any wiring.
Compared with the prior art, the invention has the beneficial effects that:
1. the high-efficiency calibration platform based on the low-voltage protection measurement and control device and the calibration method can reduce the workload of setting up a test line when calibrating the protection measurement and control device through an integrated test loop, simultaneously can calibrate the functions of all the protection devices at one time, and do not need to change the wiring mode;
2. this test platform among high-efficient check-up platform based on low pressure protection measurement and control device and check-up method is when carrying out protection device's the volume of opening test, and supporting buzzer and status indicator lamp of having set up, compare the traditional way of measuring terminal output with the universal meter, and is simpler, effective, to the protection measurement and control device of different forms, test platform in this patent sets up a size adjustable fixing device, can be according to the size flexibility adjustment of protection measurement and control device fixed to the convenience is tested the device.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a bottom view of the present invention;
FIG. 3 is a schematic perspective view of a clamping mechanism according to the present invention;
FIG. 4 is a schematic perspective view of a clamping mechanism according to the present invention;
FIG. 5 is a schematic perspective view of the collection chamber of the present invention;
fig. 6 is a schematic circuit structure of the present invention.
In the figure: 1. a buzzer; 2. an indicator light; 3. a main power supply socket; 4. a test terminal; 5. a clamping mechanism; 501. a jig stage; 502. an electric push rod; 503. a clamping block; 504. a limiting block; 6. a device under test; 7. a line concentration socket; 8. a current transformer; 9. a voltage transformer; 10. a current input terminal; 11. a voltage input terminal; 12. a test bed power button; 13. a line concentration plug; 14. a push button switch; 15. a housing; 1501. a revolving door; 16. an adjustable base; 17. a pulley; 18. a cavity; 19. a collection box; 20. a roller; 21. a handle; 22. a fixed shaft; 23. a rotating table; 24. a first motor; 25. a second motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-6, the present invention provides a technical solution: a high-efficient calibration platform based on low-voltage protection measurement and control device, the integral part is installed on an electric backplate, the electric backplate is installed in body 15, body 15 is used for protecting the electric platform, the calibration platform includes buzzer 1 and pilot lamp 2, the two are connected with the open part of test terminal 4 of the device 6 under test through the circuit, wherein the test terminal 4 is the plug-in terminal, can be connected with socket of the device 6 under test in a supporting way, N line of the general power socket 3 is connected with zero line input of the power part of the test terminal 4 directly, L line is connected with power button 12 of the test bench, after the button is pressed, one way of L line is connected with live wire input of the power part of the test terminal 4, two ways of L line are connected with common end of the button switch 14, as the switch-on power of the button switch 14 switch quantity; the device can reduce and avoid the workload of setting up a test line when checking the protection measurement and control device through the integrated test loop, simultaneously can check the functions of all the protection devices at one time, does not need to change the wiring mode, and can independently carry out the open-in test on the open-in channel of the protection measurement and control device; when the test platform performs the output test of the protection device, the buzzer and the state indicator lamp are matched, so that compared with the traditional method of measuring the output of a terminal by using a universal meter, the test platform is simpler, more effective and convenient to test the device;
the side of the shell 15 is provided with the adjustable bases 16, the number of the adjustable bases 16 is 4, the adjustable bases 16 are symmetrically arranged in the front-back and left-right directions relative to the center of the lower end of the shell 15, the lower end of the shell 15 is provided with the pulleys 17, the number of the pulleys 17 is 4, and the pulleys 17 are symmetrically arranged in the front-back and left-right directions relative to the center of the lower end of the shell 15, so that the device is provided with a base adjusting mechanism, the bottom of the shell 15 and the ground position can be adjusted by adjusting the adjustable bases 16, the device is ensured not to shake or incline, the shell 15 is transported and moved by pushing the pulleys 17, and the transportation efficiency is improved;
the front side of the shell 15 is provided with a concave cavity, the front side of the shell 15 is provided with a rotating door 1501 through a hinge, the rotating door 1501 and the shell 15 are self-locked through a fastener, the device has a protection structure, and the rotating door 1501 is favorable for being closed when not in use, so that dust and foreign matters are prevented from entering the shell 15;
the lower end of the shell 15 is provided with a cavity 18, a partition plate is arranged inside the cavity 18, a collecting box 19 is arranged at the upper end of the partition plate, the collecting box 19 is used for placing the tested device 6, rollers 20 are arranged at the lower end of the collecting box 19, a handle 21 is arranged on the side face of the collecting box 19, and anti-skid lines are arranged on the surface of the handle 21, so that the device is provided with a storage mechanism, the tested device 6 can be conveniently placed by arranging the collecting box 19, the rollers 20 are arranged at the lower end of the collecting box 19, the rollers 20 can be conveniently pulled by the handle 21 to move, and the collecting box 19 is conveniently taken and placed;
a clamping mechanism 5 is arranged in the shell 15, and the clamping mechanism 5 is used for positioning and clamping the tested device 6; the clamping mechanism 5 includes: the upper end of the shell 15 is provided with a clamp table 501, the upper end of the clamp table 501 is provided with an electric push rod 502, the shaft end of the electric push rod 502 is connected with a clamping block 503, the inner side of the clamping block 503 is provided with anti-skid threads, the upper end of the clamp table 501 is provided with 2 limiting blocks 504, the distance between the limiting blocks 504 is equal to the width of the tested device 6, the lower end of the clamp table 501 is provided with a fixed shaft 22, the fixed shaft 22 is rotatably connected with a rotating table 23, the left side of the upper end of the rotating table 23 is fixedly provided with a first motor 24, the shaft end of the first motor 24 is in key connection with the fixed shaft 22, the lower end of the rotating table 23 is in key connection with the shaft end of a second motor 25, and the lower end of the second motor 25 is fixedly arranged in the shell 15, so that the device is provided with a clamping mechanism, the clamping block 503 can be pushed by the electric push rod 502 to clamp the tested device 6, and the limiting blocks 504 are used for secondary limiting the tested device 6;
the working principle is as follows: the method comprises the steps of placing a tested device 6 on a fixture table 501, pushing a clamping block 503 to move by using an electric push rod 502, clamping the tested device 6 by the clamping block 503, recording the model and the terminal definition of the tested device 6, adjusting a wiring position from a wiring socket 7 to a test terminal 4 according to the terminal definition, connecting a voltage quantity output line of an external protection calibrator to a voltage input terminal 11 of an integrated calibration platform, connecting a current quantity output line of the external protection calibrator to a current input terminal 10 of the integrated calibration platform, respectively connecting a wiring plug 13 for transmitting analog quantity and switching quantity with the wiring socket 7, fixing, inserting a power supply into a main power socket 3, pressing a power supply button 12 of the test bench, electrifying the whole integrated calibration platform, checking the electrifying condition of the tested device 6, checking whether the tested device 6 operates normally, using a current transformer 8 and a voltage transformer 9 as existing equipment, and respectively developing the following test steps after the normal operation: the first step, analog quantity test: the current input terminals 10 are respectively connected with: 0A, 20% in, 50% in, 100% InInInin as the rated current of the device under test 6, reading the display values of the current samples on the device under test 6, and applying to the voltage input terminal 11: 0V, 20% Un, 50% Un, 100% Un, un is rated voltage of the tested device 6, and the display values of the voltage samples are read on the tested device 6 respectively; step two, input quantity testing: sequentially closing K1, K2 and K3 … … of the button switch 14, and checking the input display of the device 6 to be tested; step three, verifying the protection function: by adding analog voltage and current under the accident condition to the voltage input terminal 11 and the current input terminal 10, checking a protection action message of the tested device 6, and simultaneously checking whether the buzzer 1 of the integrated inspection platform makes a sound to represent that the tested device 6 normally sends a tripping command, and sequentially verifying all protection functions in the way; step four, checking control logic: by closing the corresponding switch of the button switch 14, simulating an external closing instruction, checking whether the indicator lamp 2 is lighted to represent that the tested device 6 normally sends out a closing instruction, and by closing the corresponding switch of the button switch 14, simulating an external opening instruction, checking whether the indicator lamp 2 is extinguished to represent that the tested device 6 normally sends out an opening instruction; and fifthly, after the test is completed, attaching a qualified certificate to the tested device 6 which is qualified in the test, taking down the tested device and installing the tested device back to the original switch mechanism, and testing the next tested device 6 with the same model without changing any wiring.
To thereby carry out a series of tasks, the contents of which are not described in detail in the present specification are prior art well known to those skilled in the art.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a high-efficient check-up platform based on low pressure protection measurement and control device, characterized in that, whole part installs on an electric backplate, electric backplate installs in casing (15), casing (15) are used for protecting this electric platform, this check-up platform includes bee calling organ (1) and pilot lamp (2), the two are connected with the part of opening of test terminal (4) of device under test (6) through the circuit, wherein test terminal (4) are plug-in terminal, can be connected with the socket supporting of device under test (6), the N line of total supply socket (3) is direct to be connected with the zero line input of the power part of test terminal (4), the L line is connected with test bench power button (12), after the button is pressed, the L line is connected with the live wire input of the power part of test terminal (4) all the way, the two way of L line is connected with the common terminal of button switch (14), as the income power of button switch (14) switching value, casing (15) inside is provided with clamping mechanism (5), clamping mechanism (5) are used for fixing a position device under test (6) centre gripping.
2. The efficient verification platform based on the low-voltage protection measurement and control device as claimed in claim 1, wherein adjustable bases (16) are arranged on the side face of the shell (15), the number of the adjustable bases (16) is 4, and the adjustable bases (16) are symmetrically arranged in front and back and left and right directions relative to the center of the lower end of the shell (15).
3. The efficient verification platform based on the low-voltage protection measurement and control device is characterized in that pulleys (17) are arranged at the lower end of the shell (15), 4 pulleys (17) are arranged, and the pulleys (17) are symmetrically arranged in front and back and left and right directions relative to the center of the lower end of the shell (15).
4. The efficient verification platform based on the low-voltage protection measurement and control device as claimed in claim 3, wherein a cavity is formed in the front face of the shell (15), a rotating door (1501) is arranged on the front face of the shell (15) through a hinge, and the rotating door (1501) and the shell (15) are self-locked through a fastener.
5. The efficient verification platform based on the low-voltage protection measurement and control device as claimed in claim 4, wherein a cavity (18) is formed in the lower end of the shell (15), a partition plate is arranged inside the cavity (18), a collection box (19) is arranged at the upper end of the partition plate, and the collection box (19) is used for placing the device to be tested (6).
6. The efficient verification platform based on the low-voltage protection measurement and control device as claimed in claim 5, wherein the lower end of the collection box (19) is provided with a roller (20), the side surface of the collection box (19) is provided with a handle (21), and the surface of the handle (21) is provided with anti-skid lines.
7. The high-efficiency verification platform based on the low-voltage protection measurement and control device according to claim 1, wherein the clamping mechanism (5) comprises: the upper end of casing (15) is provided with anchor clamps platform (501), and the upper end of anchor clamps platform (501) is provided with electric putter (502) to the axle head and the clamp splice (503) of electric putter (502) are connected, the inboard of clamp splice (503) is provided with anti-skidding line, and the upper end of anchor clamps platform (501) is provided with 2 stopper (504), and the interval of stopper (504) equals the width of being tried on device (6).
8. The efficient verification platform based on the low-voltage protection measurement and control device as claimed in claim 7, wherein a fixed shaft (22) is arranged at the lower end of the clamp table (501), the fixed shaft (22) is rotatably connected with the rotating table (23), a first motor (24) is fixed on the left side of the upper end of the rotating table (23), the shaft end of the first motor (24) is in key connection with the fixed shaft (22), the lower end of the rotating table (23) is in key connection with the shaft end of a second motor (25), and the lower end of the second motor (25) is fixedly arranged in the shell (15).
9. The method for verifying the high-efficiency verification platform based on the low-voltage protection measurement and control device according to any one of claims 1 to 8, characterized in that a device to be tested (6) is placed on a fixture table (501), a clamping block (503) is pushed by an electric push rod (502) to move, the clamping block (503) clamps the device to be tested (6), the model and the terminal definition of the device to be tested (6) are recorded, a line concentration socket (7) is adjusted to the wiring position on a test terminal (4) according to the terminal definition, a voltage quantity output line of an external protection verification instrument is connected to a voltage input terminal (11) of the integrated verification platform, a current quantity output line of the external protection verification instrument is connected to a current input terminal (10) of the integrated verification platform, a line concentration plug (13) for transmitting an analog quantity and a switching quantity is respectively connected to the line concentration socket (7) and fixed, a power supply is inserted into a main power supply socket (3), a power supply button (12) of the test table is pressed, the whole integrated verification platform is used for checking whether the device (6) is normally operated, whether the device (6) is normally tested, and whether the current transformer (9) is normally operated:
the first step, analog quantity test: the current input terminals (10) are respectively connected with: 0A, 20 in, 50 in, 100 in, in is the rated current of the device under test (6), and the display values of the current samples are read from the device under test (6), and the following are passed through the voltage input terminals (11): 0V, 20% Un, 50% Un, 100% Un, un is rated voltage of the tested device (6), and the display values of the voltage samples are read on the tested device (6);
step two, input quantity testing: sequentially closing K1, K2 and K3 … … of the button switch (14), and checking the opening amount display of the tested device (6);
step three, verifying a protection function: by adding analog voltage and current under the accident condition to the voltage input terminal (11) and the current input terminal (10), checking a protection action message of the tested device (6), and simultaneously checking whether a buzzer (1) of the integrated inspection platform makes a sound to represent that the tested device (6) normally sends a tripping command, so that all protection functions are sequentially verified;
step four, checking control logic: the corresponding switch of the button switch (14) is closed to simulate an external switching-on command, whether the indicator lamp (2) is lighted is checked to represent that the tested device (6) normally sends out a switching-on command, and the corresponding switch of the button switch (14) is closed to simulate an external switching-off command, whether the indicator lamp (2) is extinguished is checked to represent that the tested device (6) normally sends out a switching-off command;
and fifthly, after the test is finished, attaching a qualified certificate to the tested device (6) which is qualified in the test, taking down the tested device and installing the tested device back to the original switch mechanism, and testing the next tested device (6) with the same model without changing any wiring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211260129.7A CN115684875A (en) | 2022-10-14 | 2022-10-14 | High-efficiency calibration platform and calibration method based on low-voltage protection measurement and control device |
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| CN202211260129.7A CN115684875A (en) | 2022-10-14 | 2022-10-14 | High-efficiency calibration platform and calibration method based on low-voltage protection measurement and control device |
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| CN1716493A (en) * | 2005-07-13 | 2006-01-04 | 吴桂初 | On-line intelligent checking table for low voltage breaker protective property |
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| CN109581192A (en) * | 2018-12-12 | 2019-04-05 | 襄阳蓬达高新科技有限公司 | A kind of PCBA powers on rear test device and system |
| CN110579666A (en) * | 2019-10-14 | 2019-12-17 | 华自科技股份有限公司 | automatic test system for transformer relay protection equipment |
| CN213945281U (en) * | 2020-12-18 | 2021-08-13 | 柳州工学院 | Laser processing device for automobile parts |
| CN216051886U (en) * | 2021-10-21 | 2022-03-15 | 福建福日照明有限公司 | Efficient tester for LED lamp production |
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2022
- 2022-10-14 CN CN202211260129.7A patent/CN115684875A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1716493A (en) * | 2005-07-13 | 2006-01-04 | 吴桂初 | On-line intelligent checking table for low voltage breaker protective property |
| KR101659945B1 (en) * | 2016-01-25 | 2016-09-26 | 양석진 | Test terminal block all-in-one test terminal unit and distributing board used in it |
| CN109581192A (en) * | 2018-12-12 | 2019-04-05 | 襄阳蓬达高新科技有限公司 | A kind of PCBA powers on rear test device and system |
| CN110579666A (en) * | 2019-10-14 | 2019-12-17 | 华自科技股份有限公司 | automatic test system for transformer relay protection equipment |
| CN213945281U (en) * | 2020-12-18 | 2021-08-13 | 柳州工学院 | Laser processing device for automobile parts |
| CN216051886U (en) * | 2021-10-21 | 2022-03-15 | 福建福日照明有限公司 | Efficient tester for LED lamp production |
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