CN112291984B - Voltage sag monitoring device - Google Patents
Voltage sag monitoring device Download PDFInfo
- Publication number
- CN112291984B CN112291984B CN202011213890.6A CN202011213890A CN112291984B CN 112291984 B CN112291984 B CN 112291984B CN 202011213890 A CN202011213890 A CN 202011213890A CN 112291984 B CN112291984 B CN 112291984B
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- monitoring device
- voltage sag
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 35
- 238000009423 ventilation Methods 0.000 claims abstract description 15
- 230000017525 heat dissipation Effects 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 19
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- 238000002955 isolation Methods 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000012544 monitoring process Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000013021 overheating Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1401—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/03—Covers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20172—Fan mounting or fan specifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20181—Filters; Louvers
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to the technical field of power equipment, in particular to a voltage sag monitoring device which comprises a shell, wherein a supporting plate is bolted in an inner cavity of the shell, baffles are bolted on the left side and the right side of the top of the supporting plate, the tops of the baffles are bolted with the inner wall of the shell, a ventilation groove is formed in the top of the shell, mounting frames are embedded on the left side and the right side of the shell, and the mounting frames are communicated with the inner cavity of the shell; the voltage sag monitoring device has the advantages that the circuit board can be quickly installed, the maintenance difficulty is reduced, the heat dissipation effect can be effectively improved, the electronic element is prevented from being damaged due to overheating, and the monitoring working efficiency can be improved.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a voltage sag monitoring device.
Background
With the development of power electronic devices, especially the increasing of sensitive loads of computer equipment, microelectronic equipment, power electronic equipment and the like, the requirement of power users on the power supply quality of a power distribution system is increased day by day. The voltage sag is an event that the power supply voltage root mean square value is suddenly reduced in a short time, the institute of electrical and electronics engineers defines the voltage root mean square value as the voltage root mean square value is reduced to be within 90% -10% of a rated value, the duration is 0.5-30 cycles, the ratio of the voltage root mean square value during sag to the rated voltage root mean square value is defined as a sag amplitude, and the time from occurrence to termination of sag is defined as the duration. The voltage sag can seriously affect the normal work of various sensitive electric equipment, and huge loss is caused. The frequency converter belongs to sensitive equipment, and the power supply side is easy to be down due to voltage sag, so that the normal operation of a load is influenced. The main loop of the frequency converter consists of a rectifying circuit, a filter circuit and an inverter circuit, and voltage sag has different influences on each link of the main loop of the frequency converter, so that the output voltage of the frequency converter also has influences on a load.
The voltage sag monitoring device safety and stability who uses at present is relatively poor, be not convenient for install and change the circuit board, and monitoring devices's radiating effect is relatively poor, electronic component is overheated and appears damaging easily, thereby can lead to voltage sag monitoring devices's work efficiency to reduce, the voltage monitoring result of converter has seriously been influenced, we propose one kind for this reason and can install the circuit board fast, the maintenance degree of difficulty has been reduced, and can effectively promote the radiating effect, prevent that electronic component from damaging by overheat, and then can promote monitoring work efficiency's monitoring devices and solve this problem.
Disclosure of Invention
The invention aims to provide a voltage sag monitoring device, which has the advantages that a circuit board can be quickly installed, the maintenance difficulty is reduced, the heat dissipation effect can be effectively improved, the electronic element is prevented from being damaged due to overheating, and the monitoring working efficiency can be improved.
In order to achieve the purpose, the invention provides the following technical scheme: a voltage sag monitoring device comprises a shell, wherein a supporting plate is bolted in an inner cavity of the shell, baffles are bolted on the left side and the right side of the top of the supporting plate, the tops of the baffles are bolted with the inner wall of the shell, a ventilation groove is formed in the top of the shell, mounting frames are embedded in the left side and the right side of the shell and are communicated with the inner cavity of the shell, the mounting frames are symmetrically arranged, a heat dissipation mechanism is arranged inside the mounting frames, fixing seats are bolted on the inner wall of the rear side inside the shell and are positioned between the baffles, the number of the fixing seats is multiple, the distances between the fixing seats are equal, a clamping mechanism is arranged inside the fixing seats, limiting frames are embedded in the surfaces of the baffles and are symmetrically distributed, a limiting mechanism is arranged inside the limiting frames, and a protection plate is bolted on the front side of the shell, the positive left and right sides of casing all bolted connection has the lug, the recess has all been seted up to the left and right sides of guard plate, the lug be located the inside of recess and with the recess between the joint.
The clamping mechanism comprises a compression spring, a sliding plate, a sliding rod and a buffer plate, the compression spring is bolted with the inner wall of the fixed seat, the sliding plate is bolted with the compression spring and is in sliding connection with the inner wall of the fixed seat, the sliding rod is bolted with one side of the sliding plate, which is far away from the compression spring, the buffer plate is bolted with the sliding rod, and an insulating rubber pad is bonded on the surface of the buffer plate.
Stop gear includes reset spring, limiting plate, spliced pole and stopper, the bolt between limiting plate and the reset spring, and the inner wall sliding connection of limiting plate and spacing frame, the spliced pole runs through to the outside of spacing frame, and the bolt between spliced pole and the limiting plate, the bolt between stopper and the spliced pole.
Preferably, the heat dissipation mechanism comprises a connecting rod, a motor and fan blades, the connecting rod is bolted to the inner wall of the mounting frame, the motor is located at the center of the mounting frame and is bolted to the connecting rod, and the fan blades are bolted to an output shaft of the motor.
Preferably, a plurality of wire holders are embedded on the surface of the supporting plate and are uniformly arranged, a sealing plate is bolted to the bottom of the shell, a signal interface is embedded on the surface of the sealing plate, and the signal interface is connected with the wire holders through wires.
Preferably, through holes are formed in the surface of the baffle and located between the limiting frames, the number of the through holes is a plurality, and the through holes are distributed in an array.
Preferably, the quantity of ventilation groove is a plurality of, and the distance between the ventilation groove equals, the inside in ventilation groove is inlayed and is equipped with the dust screen.
Preferably, an isolation net is embedded in the installation frame, the isolation net is made of stainless steel materials, and the isolation net is distributed annularly.
Preferably, the upper side and the lower side of the shell are bolted with mounting blocks, the mounting blocks are respectively positioned at four corners of the shell, and mounting holes are formed in the surface of each mounting block.
Preferably, the front of guard plate is inlayed and is equipped with the display screen, the bottom of display screen is provided with a plurality of pilot lamps, operating button is inlayed to the positive bottom of guard plate.
Compared with the prior art, the invention has the following beneficial effects:
the voltage sag monitoring device has the advantages that the circuit board can be quickly installed, the maintenance difficulty is reduced, the heat dissipation effect can be effectively improved, the electronic element is prevented from being damaged due to overheating, and the monitoring working efficiency can be improved.
Drawings
FIG. 1 is a schematic cross-sectional view of the structure of the present invention;
FIG. 2 is an enlarged view of a portion of the invention at A in FIG. 1;
FIG. 3 is a left side sectional view of the inventive structure;
FIG. 4 is an enlarged view of a portion of the present invention at B of FIG. 3;
FIG. 5 is a schematic top view of a spacing mechanism of the present invention;
fig. 6 is a perspective view of the present invention.
In the figure: 1. a housing; 2. a support plate; 3. a baffle plate; 4. a ventilation slot; 5. installing a frame; 6. a heat dissipation mechanism; 61. a connecting rod; 62. a motor; 63. a fan blade; 7. a fixed seat; 8. a clamping mechanism; 81. a compression spring; 82. a sliding plate; 83. a slide bar; 84. a buffer plate; 9. a limiting frame; 10. a limiting mechanism; 101. a return spring; 102. a limiting plate; 103. connecting columns; 104. a limiting block; 11. a protection plate; 12. a bump; 13. a groove; 14. a wire holder; 15. a sealing plate; 16. a signal interface; 17. a through hole; 18. a dust screen; 19. an isolation net; 20. mounting blocks; 21. mounting holes; 22. a display screen; 23. an indicator light; 24. the button is operated.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, a voltage sag monitoring device comprises a housing 1, a supporting plate 2 is bolted in an inner cavity of the housing 1, baffles 3 are bolted on the left and right sides of the top of the supporting plate 2, the top of the baffles 3 is bolted with the inner wall of the housing 1, a ventilation groove 4 is formed in the top of the housing 1, mounting frames 5 are embedded in the left and right sides of the housing 1, the mounting frames 5 are communicated with the inner cavity of the housing 1, the mounting frames 5 are symmetrically arranged, a heat dissipation mechanism 6 is arranged inside the mounting frames 5, fixing seats 7 are bolted on the inner wall of the rear side inside the housing 1, the fixing seats 7 are positioned between the baffles 3, the number of the fixing seats 7 is equal, the distances between the fixing seats 7 are equal, a clamping mechanism 8 is arranged inside the fixing seats 7, a limiting frame 9 is embedded on the surface of the baffles 3, the limiting frames 9 are symmetrically distributed, a limiting mechanism 10 is arranged inside the limiting frame 9, protection plate 11 has been bolted on casing 1's front, casing 1 is positive all bolted on the left and right sides has lug 12, recess 13 has all been seted up to protection plate 11's the left and right sides, lug 12 be located recess 13 the inside and with the recess 13 between the joint, the device has can install the circuit board fast, the maintenance degree of difficulty has been reduced, and can effectively promote the radiating effect, prevent electronic component overheat damage, and then can promote monitoring work efficiency's advantage, it is relatively poor to have solved the voltage sag monitoring device safety and stability who uses at present, be not convenient for install and change the circuit board, and monitoring devices's radiating effect is relatively poor, electronic component is overheated damage easily appears, thereby can lead to the problem that voltage sag monitoring devices work efficiency reduces.
In this embodiment, the heat dissipation mechanism 6 includes the connecting rod 61, the motor 62 and the fan blade 63, the connecting rod 61 is bolted with the inner wall of the installation frame 5, the motor 62 is located at the center of the installation frame 5, and the bolted connection between the motor 62 and the connecting rod 61, the fan blade 63 is bolted with the output shaft of the motor 62, through the setting of the connecting rod 61, the motor 62 and the fan blade 63, the inside air circulation rate of the casing 1 can be increased, and then the heat dissipation effect of the voltage sag monitoring device can be promoted, and the service life of the voltage sag monitoring device is prolonged.
In this embodiment, the clamping mechanism 8 includes a compression spring 81, a sliding plate 82, a sliding rod 83 and a buffer plate 84, the compression spring 81 is bolted to the inner wall of the fixed seat 7, the sliding plate 82 is bolted to the compression spring 81, and the sliding plate 82 is slidably connected to the inner wall of the fixed seat 7, the sliding rod 83 is bolted to one side of the sliding plate 82 away from the compression spring 81, the buffer plate 84 is bolted to the sliding rod 83, and an insulating rubber pad is bonded to the surface of the buffer plate 84, through the arrangement of the compression spring 81, the sliding plate 82, the sliding rod 83 and the buffer plate 84, the circuit board can be clamped and fixed, the circuit board is prevented from loosening in the using process, and short circuit of the circuit board can be prevented.
In this embodiment, stop gear 10 includes reset spring 101, limiting plate 102, spliced pole 103 and stopper 104, the bolt between limiting plate 102 and the reset spring 101, and the inner wall sliding connection of limiting plate 102 and spacing frame 9, spliced pole 103 runs through to the outside of spacing frame 9, and the bolt between spliced pole 103 and the limiting plate 102, the bolt between stopper 104 and the spliced pole 103, through reset spring 101, limiting plate 102, the setting of spliced pole 103 and stopper 104, be convenient for install and dismantle the circuit board, and can increase the fixed effect of circuit board, thereby brought the facility for the maintenance of voltage sag monitoring devices.
In this embodiment, a plurality of wire holders 14 have been inlayed on the surface of backup pad 2, and wire holder 14 is align to grid, and casing 1's bottom bolt has connect sealing plate 15, and signal interface 16 has been inlayed on sealing plate 15's surface, and signal interface 16 passes through and is connected between wire holder 14, is connected through wire holder 14, sealing plate 15 and signal interface 16's setting, is convenient for be connected voltage sag monitoring device and outside electrical equipment, and can increase the connection stability of cable.
In this embodiment, the surface of baffle 3 just is located and has seted up through-hole 17 between the spacing frame 9, and the quantity of through-hole 17 is a plurality of, and through-hole 17 is array distribution, through the setting of through-hole 17, and the air current of being convenient for flows through the circuit board, can increase electronic component's radiating efficiency, prevents that electronic component from overheating and damaging.
In this embodiment, the quantity of ventilation groove 4 is a plurality of, and the distance between the ventilation groove 4 equals, and the inside of ventilation groove 4 is inlayed and is equipped with dust screen 18, through the setting of dust screen 18, can prevent that the dust from getting into the inside of casing 1, has effectively increased dustproof effect, and then can increase voltage sag monitoring device's security.
In this embodiment, the isolation net 19 is embedded in the mounting frame 5, the isolation net 19 is made of stainless steel, the isolation net 19 is distributed annularly, and the isolation net 19 is arranged to prevent foreign matters from entering the inside of the mounting frame 5 and prevent the fan blades 63 from being damaged.
In this embodiment, the upper and lower both sides of casing 1 all bolted connection have installation piece 20, and installation piece 20 is located the four corners of casing 1 respectively, and mounting hole 21 has been seted up on the surface of installation piece 20, and setting through installation piece 20 and mounting hole 21 is convenient for install fixed voltage sag monitoring device, has reduced voltage sag monitoring device's the assembly degree of difficulty.
In this embodiment, the front of guard plate 11 inlays and is equipped with display screen 22, and the bottom of display screen 22 is provided with a plurality of pilot lamps 23, and the setting through display screen 22, pilot lamp 23 and pilot lamp 24 is inlayed and is equipped with operating button 24 to the front bottom of guard plate 11, is convenient for observe voltage sag monitoring device's monitoring result, and can control the regulation to monitoring range.
The working principle is as follows: when the voltage sag monitoring device is used for replacing a circuit board, the circuit board is firstly placed between the baffle plates 3, the circuit board is pushed to move towards the fixed seat 7, the circuit board extrudes the limiting blocks 104 towards two sides, the limiting blocks 104 drive the limiting plates 102 to move through the connecting columns 103, so that the return springs 101 can be shortened, the circuit board is continuously pushed until the circuit board is tightly attached to the buffer plate 84, the stress of the compression springs 81 is shortened under the action of the buffer plate 84, at the moment, the circuit board moves to the rear of the limiting blocks 104, the return springs 101 push the limiting blocks 104 to recover the initial position, then the circuit board is loosened, the reaction force of the compression springs 81 pushes the circuit board to be attached to the limiting blocks 104, so that the circuit board can be quickly installed and fixed, heat can be generated when the voltage sag monitoring device works, the motor 62 drives the fan blades 63 to rotate to discharge air in the shell 1, because the inside atmospheric pressure of casing 1 reduces, the outside cold air can get into the inner chamber of casing 1 through ventilation groove 4 and dust screen 18 to can increase the inside circulation of air of casing 1, increase the radiating effect of circuit board, guarantee that voltage sag monitoring device can long-term stable work.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A voltage sag monitoring device comprising a housing (1), characterized in that: the inner cavity of the shell (1) is bolted with a support plate (2), the left side and the right side of the top of the support plate (2) are all bolted with a baffle (3), the top of the baffle (3) is bolted with the inner wall of the shell (1), the top of the shell (1) is provided with a ventilation groove (4), the left side and the right side of the shell (1) are both embedded with a mounting frame (5), the mounting frame (5) is communicated with the inner cavity of the shell (1), the mounting frame (5) is symmetrically arranged, a heat dissipation mechanism (6) is arranged inside the mounting frame (5), fixing seats (7) are bolted on the inner wall of the rear side inside the shell (1), the fixing seats (7) are positioned between the baffles (3), the number of the fixing seats (7) is a plurality, the distance between the fixing seats (7) is equal, a clamping mechanism (8) is arranged inside the fixing seats (7), the surface of the baffle (3) is embedded with limiting frames (9), the limiting frames (9) are symmetrically distributed, a limiting mechanism (10) is arranged inside the limiting frame (9), a protection plate (11) is bolted to the front surface of the shell (1), lugs (12) are bolted to the left side and the right side of the front surface of the shell (1), grooves (13) are formed in the left side and the right side of the protection plate (11), and the lugs (12) are located inside the grooves (13) and are clamped with the grooves (13);
the clamping mechanism (8) comprises a compression spring (81), a sliding plate (82), a sliding rod (83) and a buffer plate (84), the compression spring (81) is in bolted connection with the inner wall of the fixed seat (7), the sliding plate (82) is in bolted connection with the compression spring (81), the sliding plate (82) is in sliding connection with the inner wall of the fixed seat (7), the sliding rod (83) is in bolted connection with one side, away from the compression spring (81), of the sliding plate (82), the buffer plate (84) is in bolted connection with the sliding rod (83), and an insulating rubber pad is bonded on the surface of the buffer plate (84);
stop gear (10) include reset spring (101), limiting plate (102), spliced pole (103) and stopper (104), the bolt joint between limiting plate (102) and reset spring (101), and the inner wall sliding connection of limiting plate (102) and spacing frame (9), the outside to spacing frame (9) is run through to spliced pole (103), and the bolt joint between spliced pole (103) and limiting plate (102), the bolt joint between stopper (104) and spliced pole (103).
2. A voltage sag monitoring device according to claim 1, wherein: the heat dissipation mechanism (6) comprises a connecting rod (61), a motor (62) and fan blades (63), the connecting rod (61) is bolted to the inner wall of the mounting frame (5), the motor (62) is located at the center of the mounting frame (5), the motor (62) is bolted to the connecting rod (61), and the fan blades (63) are bolted to the output shaft of the motor (62).
3. A voltage sag monitoring device according to claim 1, wherein: the surface of backup pad (2) has inlayed a plurality of wire holders (14), and wire holder (14) are align to grid, the bottom bolt of casing (1) has connect closing plate (15), signal interface (16) are inlayed on the surface of closing plate (15), be connected between signal interface (16) through wire and wire holder (14).
4. A voltage sag monitoring device according to claim 1, wherein: through-hole (17) have been seted up on the surface of baffle (3) and be located between spacing frame (9), the quantity of through-hole (17) is a plurality of, and through-hole (17) are array distribution.
5. A voltage sag monitoring device according to claim 1, wherein: the quantity of ventilation groove (4) is a plurality of, and the distance between ventilation groove (4) equals, the inside in ventilation groove (4) is inlayed and is equipped with dust screen (18).
6. A voltage sag monitoring device according to claim 1, wherein: an isolation net (19) is embedded in the mounting frame (5), the isolation net (19) is made of stainless steel materials, and the isolation net (19) is distributed annularly.
7. A voltage sag monitoring device according to claim 1, wherein: the upper side and the lower side of the shell (1) are respectively bolted with mounting blocks (20), the mounting blocks (20) are respectively positioned at four corners of the shell (1), and mounting holes (21) are formed in the surface of each mounting block (20).
8. A voltage sag monitoring device according to claim 1, wherein: the front of guard plate (11) is inlayed and is equipped with display screen (22), the bottom of display screen (22) is provided with a plurality of pilot lamps (23), operating button (24) are inlayed to the positive bottom of guard plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011213890.6A CN112291984B (en) | 2020-11-04 | 2020-11-04 | Voltage sag monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011213890.6A CN112291984B (en) | 2020-11-04 | 2020-11-04 | Voltage sag monitoring device |
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| CN112291984A CN112291984A (en) | 2021-01-29 |
| CN112291984B true CN112291984B (en) | 2022-04-22 |
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| CN202011213890.6A Active CN112291984B (en) | 2020-11-04 | 2020-11-04 | Voltage sag monitoring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113341269A (en) * | 2021-05-08 | 2021-09-03 | 国网浙江省电力有限公司嘉兴供电公司 | Movable voltage sag detection device |
| CN117927609B (en) * | 2024-03-14 | 2024-05-28 | 深圳市昊洋智能有限公司 | Collect audio and video and control intelligent all-in-one in an organic whole |
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Denomination of invention: A voltage sag monitoring device Granted publication date: 20220422 Pledgee: Bank of China Limited Nanjing Chengdong Branch Pledgor: Nanjing Basler automation equipment Co.,Ltd. Registration number: Y2024980011761 |
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