CN112630490B - Ammeter and overload protection device for same - Google Patents
Ammeter and overload protection device for same Download PDFInfo
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- CN112630490B CN112630490B CN202110269820.0A CN202110269820A CN112630490B CN 112630490 B CN112630490 B CN 112630490B CN 202110269820 A CN202110269820 A CN 202110269820A CN 112630490 B CN112630490 B CN 112630490B
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- 230000005611 electricity Effects 0.000 claims description 14
- 230000017525 heat dissipation Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/16—Adaptations of counters to electricity meters
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Abstract
The invention belongs to the technical field of overload protection devices, in particular to an electric meter and an overload protection device for the same, and aims to solve the problem of complex structure of the existing overload protection device. In the invention, the magnetic field force on the second electrode plate and the permanent magnet interact with each other, so that the first sliding block releases the constraint of the second clamping block and moves towards the right side, the first electrode plate and the second electrode plate are separated from contact, the circuit is cut off, and the circuit and the electric appliance are protected.
Description
Technical Field
The invention relates to the technical field of overload protection devices, in particular to an electric meter and an overload protection device for the electric meter.
Background
The electric power technology is developed rapidly nowadays, the electric meter can not be separated in the process of electric power transmission and use, the electric meter is short for the electric energy meter, and is an instrument for measuring electric energy, also called an electric meter, a fire meter, an electric energy meter and a kilowatt hour meter.
In order to solve the problem, people develop a power supply overload protection device, the power supply overload protection device is arranged on a power supply, the safety performance of a user when the power supply is used is improved, the service life of the power supply is further prolonged, the existing protection measures are generally realized by adopting a relay, and because the internal components of the relay are complex in structure and high in production cost, the corresponding improvement is made aiming at the problem.
Disclosure of Invention
Based on the technical problem that the existing overload protection device is complex in structure, the invention provides an electric meter and an overload protection device for the electric meter.
The invention provides an electricity meter and an overload protection device for the electricity meter, which comprise a shell, wherein a first sliding groove is formed in the inner wall of the rear end of the shell, a first sliding block is connected in the first sliding groove in a sliding manner, a second mounting plate is fixed at the front end of the first sliding block through a bolt, a second electrode plate is fixedly penetrated in the second mounting plate, a conductive coil is arranged on the second electrode plate, a second groove is formed in the top of the inner wall of the first sliding groove, a second spring is fixed at the top of the inner wall of the second groove through a bolt, a second clamping block is fixed at the bottom of the second spring through a bolt, the section of the second clamping block is arranged in an arc shape, a matched second clamping groove is formed in the contact position of the top of the first sliding block and the second clamping block, a first mounting plate is fixed on the inner wall of the rear end of the shell through a bolt, the first electrode piece and the second electrode piece are respectively provided with a wiring hole, the first mounting plate and the second mounting plate are oppositely arranged, and the shell is provided with a closing mechanism.
Preferably, the front end of the shell is provided with a mounting opening, the front end of the mounting opening is provided with a sealing cover, and the sealing cover is provided with a plurality of mounting holes.
Preferably, two threading openings are symmetrically formed in the two sides of the shell in a penetrating mode.
Preferably, the closing mechanism is provided with a movable opening in a penetrating manner on one side of the top of the shell, a straight shaft is fixed in the movable opening through a bolt, the front end of the straight shaft is rotatably connected with a deflector rod through a bearing, the bottom of the deflector rod is naturally contacted with the second mounting plate, and a clamping mechanism is arranged in the movable opening.
Preferably, the clamping mechanism is provided with a first groove on the inner wall of the rear end of the movable opening, a first spring is fixed in the first groove through a bolt, a first clamping block is fixed at the front end of the first spring through a bolt, the cross section of the first clamping block is arc-shaped, and a first clamping groove matched with the rear end of the shifting rod and the contact position of the first clamping block are formed.
Preferably, the second spout has been seted up to casing rear end inner wall, and sliding connection has the second slider in the second spout, bonds between second slider front end and the permanent magnet fixedly, and the permanent magnet bottom bonds the pinion rack, and casing rear end inner wall rotates through the bearing and is connected with first branch and second branch, overlaps respectively on first branch and the second branch and establishes and be fixed with gear and worm wheel, and gear and worm wheel meshing are connected, are provided with heat dissipation mechanism in the casing.
Preferably, the heat dissipation mechanism is fixed with the bracing piece in shells inner wall bottom through the bolt, and the bracing piece top is fixed with the lantern ring through the bolt, and the lantern ring inner wall rotates through the bearing to be connected with the worm, and worm wheel meshing are connected, and the worm bottom is fixed with the connecting rod through the bolt, and the connecting rod bottom is fixed with the fan through the bolt.
Preferably, a third spring is fixed on one side of the second sliding block through a bolt, and the other side of the third spring is fixedly connected with the inner wall of the second sliding groove through a bolt.
Preferably, one side of the shell, which is close to the fan, is provided with densely distributed ventilation openings in a penetrating way.
Preferably, a plurality of ball grooves which are uniformly distributed are formed in the top of the inner wall of the second sliding groove, balls are movably connected in the ball grooves, and the surfaces of the balls are in parallel contact with the second sliding block.
Compared with the prior art, the invention provides an ammeter and an overload protection device for the ammeter, and the overload protection device has the following beneficial effects:
1. the ammeter and the overload protection device for the ammeter are characterized in that a first electrode plate and a second electrode plate are arranged, a household circuit penetrates through a threading port, corresponding circuits are respectively installed with the first electrode plate and the second electrode plate, finally, a sealing cover is installed through matching of a screw and an installation hole to be used, when the circuit is overloaded, the current in the circuit reaches an overload value, the second electrode plate generates an alternating magnetic field due to electromagnetic phenomenon, when the current instantly reaches the overload value, the magnetic field force on the second electrode plate and the magnetic force between permanent magnets interact to enable a first sliding block to remove the constraint of a second clamping block and move towards the right side, so that the first electrode plate and the second electrode plate are separated from contact, the circuit is cut off, the circuit and an electric appliance are protected, the electromagnetic force formed on the second electrode plate can be improved through the arrangement of a conductive coil, thereby increasing the interaction force.
2. This ammeter and be used for overload protection device of ammeter, through setting up closing mechanism, when needing the recovery circuit, rotate the driving lever to the right side, the bottom of driving lever drives the second mounting panel and removes to the left side, until first electrode slice and the contact of second electrode slice, then with the circuit switch-on, normal use, first spring promotes first fixture block and first draw-in groove joint this moment, then fix the position of driving lever, thereby make when the circuit tripping operation, the second mounting panel can drive the driving lever and reset, thereby convenient to use person passes through the position of driving lever, in time know the tripping operation condition.
3. The ammeter and the overload protection device for the ammeter are characterized in that the radiating fan is arranged, as the second electrode plate generates alternate electromagnetic force, the permanent magnet can move back and forth in the second sliding groove along with the second sliding block so as to drive the toothed plate to move back and forth, the toothed plate is meshed with the toothed plate to drive the gear to rotate, the gear is meshed with the gear to drive the worm wheel to rotate, the worm wheel is meshed with the worm wheel to drive the worm to rotate, the connecting rod and the radiating fan are driven to rotate, and the airflow formed by the rotating radiating fan enables the heat generated by the original piece in the shell during working to be discharged through the vent, so that the radiating effect is achieved, the service performance and the service life of the device are improved, when the electric appliance is used more, the larger the current in the circuit is, the stronger the magnetic field force generated on the second electrode plate is enabled to be stronger, the acting force on, thereby make the corresponding improvement of wind-force that radiator fan formed, thereby make the automatic use amount of following electrical apparatus of radiating power adjust, improve whole radiating effect, and energy-concerving and environment-protective, it is further, be provided with the third spring, can make the removal process of second slider more steady, thereby make radiator fan's radiating effect improve, furthermore, be provided with ball and ball groove, can make the second slider at the in-process that removes, take place rolling friction with the ball, thereby reduce the moving resistance to the second slider, thereby make radiator fan's radiating effect better.
Drawings
Fig. 1 is a schematic diagram of an internal structure of an electric meter and an overload protection device for the electric meter according to the present invention;
fig. 2 is a schematic structural diagram of an operating state of an electric meter and an overload protection device for the electric meter according to the present invention;
fig. 3 is a schematic perspective view of an electric meter and an overload protection device for the electric meter according to the present invention;
fig. 4 is a schematic view of an electrode plate mounting structure of an electricity meter and an overload protection device for the electricity meter according to the present invention;
fig. 5 is a schematic partial structural diagram of an electric meter and an overload protection apparatus for the electric meter according to embodiment 2 of the present invention.
In the figure: 1. a housing; 2. an installation port; 3. a sealing cover; 4. mounting holes; 5. a movable opening; 6. a straight shaft; 7. a deflector rod; 8. a first groove; 9. a first clamping block; 10. a first mounting plate; 11. a first electrode sheet; 12. a permanent magnet; 13. a first chute; 14. a first slider; 15. a second mounting plate; 16. a second electrode sheet; 17. a conductive coil; 18. a second groove; 19. a second spring; 20. a second fixture block; 21. a threading opening; 22. a second chute; 23. a third spring; 24. a second slider; 25. a toothed plate; 26. a gear; 27. a worm gear; 28. a support bar; 29. a collar; 30. a worm; 31. a connecting rod; 32. a heat radiation fan; 33. a vent; 34. a ball groove; 35. and a ball.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-4, an electricity meter and an overload protection device for the electricity meter comprise a shell 1, wherein a first sliding groove 13 is formed in the inner wall of the rear end of the shell 1, a first sliding block 14 is connected in the first sliding groove 13 in a sliding manner, a second mounting plate 15 is fixed at the front end of the first sliding block 14 through a bolt, a second electrode plate 16 is fixedly penetrated inside the second mounting plate 15, a conductive coil 17 is arranged on the second electrode plate 16, a second groove 18 is formed in the top of the inner wall of the first sliding groove 13, a second spring 19 is fixed at the top of the inner wall of the second groove 18 through a bolt, a second clamping block 20 is fixed at the bottom of the second spring 19 through a bolt, the cross section of the second clamping block 20 is arc-shaped, a second clamping groove matched with the contact position of the top of the first sliding block 14 and the second clamping block 20 is formed in the contact position, a first mounting plate 10 is fixed, the permanent magnet 12 is bonded on one side, away from the first electrode plate 11, of the first mounting plate 10, wiring holes are formed in the first electrode plate 11 and the second electrode plate 16, the first mounting plate 10 and the second mounting plate 15 are arranged oppositely, and the casing 1 is provided with a closing mechanism.
In the invention, the front end of the shell 1 is provided with the mounting port 2, the front end of the mounting port 2 is provided with the sealing cover 3, and the sealing cover 3 is provided with a plurality of mounting holes 4, thereby facilitating the installation.
In the invention, two threading openings 21 are symmetrically arranged on two sides of the shell 1 in a penetrating manner, so that the threading is convenient.
According to the invention, the closing mechanism is provided with the movable opening 5 in a penetrating manner on one side of the top of the shell 1, the straight shaft 6 is fixed in the movable opening 5 through a bolt, the front end of the straight shaft 6 is rotatably connected with the deflector rod 7 through a bearing, the bottom of the deflector rod 7 is naturally contacted with the second mounting plate 15, and the movable opening 5 is internally provided with the clamping mechanism, so that a circuit can be conveniently controlled.
In the invention, the inner wall of the rear end of the movable opening 5 of the clamping mechanism is provided with a first groove 8, a first spring is fixed in the first groove 8 through a bolt, the front end of the first spring is fixed with a first clamping block 9 through a bolt, the section of the first clamping block 9 is arranged into an arc shape, the contact position of the rear end of the deflector rod 7 and the first clamping block 9 is provided with a matched first clamping groove, when a circuit needs to be restored, the shifting lever 7 is rotated towards the right side, the bottom of the shifting lever 7 drives the second mounting plate 15 to move towards the left side until the first electrode plate 11 is contacted with the second electrode plate 16, then the circuit is connected, the normal use is realized, at the moment, the first spring pushes the first clamping block 9 to be clamped with the first clamping groove, then the position of the shifting lever 7 is fixed, therefore, when the circuit is tripped, the second mounting plate 15 drives the shifting lever 7 to reset, so that a user can know the tripping condition in time through the position of the shifting lever 7.
When the household line is used, a household line penetrates through the threading opening 21, the corresponding line is respectively installed with the first electrode plate 11 and the second electrode plate 16, finally, the sealing cover 3 is installed through the cooperation of the screw and the installation hole 4, when the circuit is overloaded, the current in the line reaches an overload value, the second electrode plate 16 generates an alternating magnetic field due to the electromagnetic phenomenon, when the current instantly reaches the overload value, the magnetic field force on the second electrode plate 16 and the magnetic force between the permanent magnets 12 interact, the first sliding block 14 releases the constraint of the second clamping block 20 and moves towards the right side, so that the first electrode plate 11 and the second electrode plate 16 are separated from contact, the circuit is cut off, the circuit and an electric appliance are protected, and the electromagnetic force formed on the second electrode plate 16 can be improved through the arrangement of the conductive coil 17, so that the interaction force is improved, when needing the recovery circuit, with driving lever 7 to the right side rotation, the bottom of driving lever 7 drives second mounting panel 15 and removes to the left side, until first electrode piece 11 and the 16 contact of second electrode piece, then with the circuit switch-on, normal use, first spring promotes first fixture block 9 and first draw-in groove joint this moment, then fix the position of driving lever 7, thereby make when the circuit tripping operation, second mounting panel 15 can drive driving lever 7 and reset, thereby convenient to use person passes through the position of driving lever 7, in time know the tripping operation condition.
Example 2
Referring to fig. 1-5, an ammeter and overload protection device for ammeter, casing 1 rear end inner wall has seted up second spout 22, sliding connection has second slider 24 in the second spout 22, it is fixed to bond between second slider 24 front end and the permanent magnet 12, permanent magnet 12 bottom bonds has pinion rack 25, casing 1 rear end inner wall rotates through the bearing and is connected with first branch and second branch, it is fixed with gear 26 and worm wheel 27 to overlap respectively on first branch and the second branch, gear 26 and worm wheel 27 mesh are connected, be provided with heat dissipation mechanism in the casing 1.
According to the invention, the bottom of the inner wall of the shell 1 of the heat dissipation mechanism is fixedly provided with the support rod 28 through a bolt, the top of the support rod 28 is fixedly provided with the lantern ring 29 through a bolt, the inner wall of the lantern ring 29 is rotatably connected with the worm 30 through a bearing, the worm 30 is meshed with the worm wheel 27 and is connected with the connecting rod 31 through a bolt, the bottom of the connecting rod 31 is fixedly provided with the fan 32 through a bolt, and due to the fact that alternate electromagnetic force is generated on the second electrode plate 16, the permanent magnet 12 moves back and forth in the second sliding groove 22 along with the second sliding block 24, the toothed plate 25 is driven to move back and forth, the toothed plate 25 is meshed with the driving gear 26 to rotate, the gear 26 is meshed with the worm wheel 27 to drive the worm 30 to rotate, the connecting rod 31 and.
In the invention, the third spring 23 is fixed on one side of the second slider 24 through the bolt, and the other side of the third spring 23 is fixedly connected with the inner wall of the second chute 22 through the bolt, so that the moving process of the second slider 24 is more stable, and the heat radiation effect of the heat radiation fan 32 is improved.
In the invention, the side of the casing 1 close to the fan 32 is provided with the densely distributed ventilation openings 33 in a penetrating way, so that heat generated by the original in the casing 1 during working is discharged through the ventilation openings 33, and the heat dissipation effect is achieved.
In the invention, the top of the inner wall of the second chute 22 is provided with a plurality of ball grooves 34 which are uniformly distributed, the ball 35 is movably connected in the ball grooves 34, and the surface of the ball 35 is in parallel contact with the second slider 24, so that the second slider 24 and the ball 35 generate rolling friction in the moving process, thereby reducing the moving resistance of the second slider 24 and further improving the heat dissipation effect of the heat dissipation fan 32.
When the device is used, due to the fact that the second electrode plate 16 generates alternating electromagnetic force, the permanent magnet 12 moves back and forth in the second sliding groove 22 along with the second sliding block 24, the toothed plate 25 is driven to move back and forth, the toothed plate 25 is meshed with the driving gear 26 to rotate, the gear 26 is meshed with the driving worm gear 27 to rotate, the worm gear 27 is meshed with the driving worm 30 to rotate, the connecting rod 31 and the heat dissipation fan 32 are driven to rotate, air flow formed by the rotating heat dissipation fan 32 enables heat generated when an original in the shell 1 works to be discharged through the vent 33, the heat dissipation effect is achieved, the service performance and the service life of the device are improved, when an electric appliance is used more, the larger the current in a circuit is, the stronger the magnetic field force generated on the second electrode plate 16 is made, the stronger the acting force on the permanent magnet 12 is made, the movement and the speed stroke of the second sliding block 24 are increased, and accordingly wind power formed by, thereby make the automatic use amount of following electrical apparatus of radiating power adjust, improve whole radiating effect, and energy-concerving and environment-protective, it is further, be provided with third spring 23, can make the removal process of second slider 24 more steady, thereby make radiator fan 32's radiating effect improve, it is further, be provided with ball 35 and ball groove 34, can make second slider 24 at the in-process that removes, take place rolling friction with ball 35, thereby reduce the moving resistance to second slider 24, thereby make radiator fan 32's radiating effect better.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. An ammeter comprises a shell (1) and is characterized in that a first sliding groove (13) is formed in the inner wall of the rear end of the shell (1), a first sliding block (14) is connected in the first sliding groove (13) in a sliding mode, a second mounting plate (15) is fixed to the front end of the first sliding block (14) through a bolt, a second electrode plate (16) is fixedly arranged on the inner side of the second mounting plate (15) in a penetrating mode, a conductive coil (17) is arranged on the second electrode plate (16), a second groove (18) is formed in the top of the inner wall of the first sliding groove (13), a second spring (19) is fixed to the top of the inner wall of the second groove (18) through a bolt, a second clamping block (20) is fixed to the bottom of the second spring (19) through a bolt, the cross section of the second clamping block (20) is arc-shaped, a second clamping groove matched with the contact position of the top of the first sliding block (14) and the second clamping block (, first electrode piece (11) are fixed on the inner side of the first mounting plate (10) in an embedded mode, a permanent magnet (12) is bonded on one side, away from the first electrode piece (11), of the first mounting plate (10), wiring holes are formed in the first electrode piece (11) and the second electrode piece (16), the first mounting plate (10) and the second mounting plate (15) are arranged oppositely, and a closing mechanism is arranged on the shell (1).
2. An electricity meter as claimed in claim 1, characterized in that the front end of the casing (1) is provided with a mounting opening (2), the front end of the mounting opening (2) is provided with a sealing cover (3), and the sealing cover (3) is provided with a plurality of mounting holes (4).
3. An electricity meter as claimed in claim 1, characterized in that two threading openings (21) are symmetrically arranged through the housing (1).
4. An electricity meter according to claim 1, characterized in that the closing mechanism is provided with a movable opening (5) at one side of the top of the housing (1), a straight shaft (6) is fixed in the movable opening (5) through a bolt, the front end of the straight shaft (6) is rotatably connected with a deflector rod (7) through a bearing, the bottom of the deflector rod (7) naturally contacts with the second mounting plate (15), and a locking mechanism is arranged in the movable opening (5).
5. An electricity meter according to claim 4, characterized in that the locking mechanism is provided with a first groove (8) on the inner wall of the rear end of the movable opening (5), a first spring is fixed in the first groove (8) through a bolt, a first clamping block (9) is fixed at the front end of the first spring through a bolt, the cross section of the first clamping block (9) is arc-shaped, and a first clamping groove matched with the contact position of the rear end of the shift lever (7) and the first clamping block (9) is provided.
6. The ammeter of claim 1 wherein the inner wall of the rear end of the housing (1) is provided with a second chute (22), the second chute (22) is slidably connected with a second slider (24), the front end of the second slider (24) is fixedly bonded with the permanent magnet (12), the bottom of the permanent magnet (12) is bonded with a toothed plate (25), the inner wall of the rear end of the housing (1) is rotatably connected with a first supporting rod and a second supporting rod through a bearing, the first supporting rod and the second supporting rod are respectively sleeved with a gear (26) and a worm gear (27), the gear (26) and the worm gear (27) are meshed and connected, and the housing (1) is internally provided with a heat dissipation mechanism.
7. An electricity meter according to claim 6, characterized in that the heat dissipation mechanism is provided with a support rod (28) fixed at the bottom of the inner wall of the shell (1) through a bolt, a sleeve ring (29) fixed at the top of the support rod (28) through a bolt, a worm (30) rotatably connected with the inner wall of the sleeve ring (29) through a bearing, the worm (30) and the worm wheel (27) are meshed and connected, a connecting rod (31) is fixed at the bottom of the worm (30) through a bolt, and a heat dissipation fan (32) is fixed at the bottom of the connecting rod (31) through a bolt.
8. An electricity meter in accordance with claim 6 characterized in that a third spring (23) is fixed on one side of the second slider (24) by means of a bolt, and the other side of the third spring (23) is fixedly connected with the inner wall of the second runner (22) by means of a bolt.
9. An electricity meter as claimed in claim 6, characterized in that said housing (1) has densely arranged ventilation openings (33) formed through it on the side close to said heat-dissipating fan (32).
10. An electricity meter as claimed in claim 6, characterized in that a plurality of ball grooves (34) are formed in the top of the inner wall of the second sliding groove (22) and are evenly distributed, a ball (35) is movably connected in the ball grooves (34), and the surface of the ball (35) is in parallel contact with the second sliding block (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110269820.0A CN112630490B (en) | 2021-03-12 | 2021-03-12 | Ammeter and overload protection device for same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110269820.0A CN112630490B (en) | 2021-03-12 | 2021-03-12 | Ammeter and overload protection device for same |
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| Publication Number | Publication Date |
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| CN112630490A CN112630490A (en) | 2021-04-09 |
| CN112630490B true CN112630490B (en) | 2021-05-25 |
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| CN202110269820.0A Active CN112630490B (en) | 2021-03-12 | 2021-03-12 | Ammeter and overload protection device for same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113189427B (en) * | 2021-05-07 | 2022-07-19 | 国家电网有限公司 | Electric energy quality monitoring device with ungrounded neutral point |
| CN113341184B (en) * | 2021-06-08 | 2022-05-24 | 深圳市先行电气技术有限公司 | Intelligent electric meter with overload protection device |
| CN118213156A (en) * | 2023-04-14 | 2024-06-18 | 南京开聚电子科技有限公司 | Power electronic transformer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19602118C2 (en) * | 1996-01-22 | 1999-12-30 | Siemens Ag | Electrical switching device |
| US8749329B2 (en) * | 2011-04-14 | 2014-06-10 | Carling Technologies, Inc. | Magnetic circuit interrupter with current limiting capability |
| CN206250131U (en) * | 2016-11-25 | 2017-06-13 | 科泰电气有限公司 | A kind of combined heavy current breaker |
| CN211295017U (en) * | 2019-12-23 | 2020-08-18 | 徐州坤元电子科技有限公司 | Single-path power detection and overload protection device |
| CN212201653U (en) * | 2020-03-17 | 2020-12-22 | 中茵电力科技（苏州）有限公司 | Overload protection terminal distribution box |
| CN111509484A (en) * | 2020-04-26 | 2020-08-07 | 熊青青 | Plug and socket with overload protection function |
| CN212012117U (en) * | 2020-06-17 | 2020-11-24 | 威海汉城成镐电子有限公司 | Overcurrent protection device capable of setting overcurrent protection value |
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