CN113161208A - Circuit breaker tripping device with setting current adjusting function - Google Patents
Circuit breaker tripping device with setting current adjusting function Download PDFInfo
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- CN113161208A CN113161208A CN202110417050.XA CN202110417050A CN113161208A CN 113161208 A CN113161208 A CN 113161208A CN 202110417050 A CN202110417050 A CN 202110417050A CN 113161208 A CN113161208 A CN 113161208A
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- circuit breaker
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- 230000006835 compression Effects 0.000 claims abstract description 30
- 238000007906 compression Methods 0.000 claims abstract description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000010949 copper Substances 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 230000004907 flux Effects 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 108700041286 delta Proteins 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method 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
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7463—Adjusting only the electromagnetic mechanism
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The invention discloses a circuit breaker tripping device with a setting current adjusting function, which comprises a magnetic conduction frame, an armature, a stop sleeve, a fixed plate, a compression spring, a guide rod, a striking rod and a setting scale adjusting device, wherein the armature is arranged on the magnetic conduction frame; the middle part of the magnetic conduction frame is provided with a first rectangular opening for a current-carrying copper bar of the circuit breaker to pass through, the upper part of the magnetic conduction frame is provided with an inverted triangular opening for arranging an armature, and the upper part of the inverted triangular opening is provided with a second rectangular opening for dividing a magnetic loop; the armature is fixedly connected with the impact rod, when the armature moves, the impact rod is driven to move, the impact rod impacts the interlocking structure, and tripping and brake separating of the circuit breaker are realized; a round hole is formed in the middle of the armature and used for a guide rod to penetrate through; the guide rod is connected with the fixed plate in an interference fit manner; the compression spring is sleeved on the guide rod, and the upper end of the compression spring is limited by the armature; the setting scale adjusting device can adjust the compression amount of the compression spring and is used for adjusting the setting current tripping value of the circuit breaker.
Description
Technical Field
The invention relates to the field of switching appliances, in particular to a circuit breaker tripping device with a setting current adjusting function.
Background
The circuit breaker refers to a switching device capable of closing, carrying and breaking a current under a normal circuit condition and closing, carrying and breaking a current under an abnormal circuit condition within a specified time. In a rail transit traction power supply system, a circuit breaker is used for ensuring the safe operation of the power supply system. Under the condition of an abnormal loop, the breaking time of the circuit breaker can directly influence the time for the traction power supply equipment to bear fault current, and the circuit breaker is required to start rapid brake-breaking response in a short time for protecting the safety of the power supply equipment under the abnormal condition.
The circuit breaker is used as a protection element of a power supply loop, and a plurality of tripping devices including shunt tripping, indirect tripping, undervoltage tripping, overload tripping and the like are arranged for improving the reliability of protection. The overload tripping device is used as a basic tripping device of the circuit breaker, and when the current value or the rising rate of a protected circuit exceeds a preset value, the tripping device is triggered to realize the opening operation of the circuit breaker. It is not restricted by the control loop of the breaker, and is a device directly acting on tripping. At present, in a direct-current traction power supply system, an overload tripping device of a main current is influenced by a disc spring variable stiffness characteristic, a movement structure and a setting current scale adjusting device, a setting tripping current value is extremely unstable, and the phenomenon of setting current value drifting often occurs.
Disclosure of Invention
In order to solve the problems in the background art, the present invention provides a circuit breaker trip device with a function of adjusting a set current.
In order to achieve the purpose, the invention adopts the technical scheme that:
a circuit breaker tripping device with a setting current adjusting function comprises a magnetic conduction frame, an armature, a stop sleeve, a fixing plate, a compression spring, a guide rod, an impact rod and a setting scale adjusting device;
the middle part of the magnetic conduction frame is provided with a first rectangular opening for a current-carrying copper bar of the circuit breaker to pass through, the upper part of the magnetic conduction frame is provided with an inverted triangular opening for arranging the armature, and the upper part of the inverted triangular opening is provided with a second rectangular opening for dividing a magnetic loop;
the armature is fixedly connected with the impact rod, when the armature moves, the impact rod is driven to move, the impact rod impacts the interlocking structure, and tripping and brake separating of the circuit breaker are realized;
a round hole is formed in the middle of the armature and is used for the guide rod to penetrate through;
the fixed plate is fixedly arranged at the top of the magnetic conduction frame, the stop sleeve is arranged at the top end of the armature, and the fixed plate and the stop sleeve are used for limiting the armature;
the guide rod is connected with the fixing plate in an interference fit manner;
the compression spring is sleeved on the guide rod, and the upper end of the compression spring is limited by the armature;
the setting scale adjusting device can adjust the compression amount of the compression spring and is used for adjusting the setting current tripping value of the circuit breaker.
In some embodiments, the setting current scale adjustment device comprises a threaded sleeve, a large bevel gear, a small bevel gear, a worm gear, and a dial;
the guide rod is provided with threads and is connected with the threaded sleeve screw pair;
the large bevel gear is connected with the threaded sleeve through a flat key;
the small bevel gear is fixedly connected with the worm;
the small bevel gear is meshed with the large bevel gear, and the worm wheel is meshed with the worm;
the turbine is fixedly connected with the dial;
the worm is provided with a hexagonal square hole which is used for being matched with an external hexagonal wrench for a user to operate.
In some embodiments, the armature is an inverted triangular shape, consisting of three parts: the upper armature, the lower armature and the non-magnetizer; the non-magnetizer is arranged in the middle of the armature; the upper armature, the lower armature and the non-magnetizer are fixedly connected;
the magnetic conduction frame, the lower armature iron and the working air gap between the magnetic conduction frame and the lower armature iron form a first magnetic loop, the magnetic conduction frame, the upper armature iron and the working air gap between the magnetic conduction frame and the upper armature iron form a second magnetic loop, the working air gap of the second magnetic loop is smaller than the working air gap of the first magnetic loop, and the magnetic flux area of the second magnetic loop is smaller than the magnetic flux area of the first magnetic loop.
In some embodiments, two short circuit rings are symmetrically arranged on a second magnetic loop formed by the magnetic conduction frame, the upper armature and a working air gap between the magnetic conduction frame and the upper armature.
In some embodiments, the magnetic conduction frame further comprises a positioning bent plate, the positioning bent plate is fixed on the magnetic conduction frame, a positioning hole is formed in the positioning bent plate, and the impact rod penetrates through the positioning hole.
Compared with the prior art, the invention has the beneficial effects that:
the circuit breaker tripping device with the setting current adjusting function can enable the circuit breaker to quickly realize tripping and brake separating when the loop current is abnormal, so that the safety of power supply equipment is ensured; and the setting current scale adjusting device adopts a bevel gear and worm gear structure, the worm gear has a self-locking characteristic, the stability of the scale can be ensured, meanwhile, the scale adjusting tool adopts a universal outer hexagonal wrench, the operation is simple and convenient, the reliability is high, the scale indication is easy to observe and read, and the user experience is improved.
Drawings
Fig. 1 is a schematic diagram of a circuit breaker tripping device with a setting current adjusting function according to the present invention;
fig. 2 is a schematic structural view of a magnetic conduction frame and a short circuit ring of a circuit breaker trip device;
fig. 3 is a schematic view of two magnetic circuits of a circuit breaker trip device and their working air gaps;
FIG. 4 is a side partially exploded view of FIG. 1;
fig. 5 is a partially exploded schematic view of the trip principle of the circuit breaker trip device;
FIG. 6 is an installation schematic diagram of a setting current scale adjustment device;
FIG. 7 is a front view of a setting current scale adjustment apparatus;
FIG. 8 is a side view of a setting current scale adjustment apparatus;
fig. 9 is a schematic view of an operation using an external hexagonal wrench.
Description of reference numerals:
1. a magnetic conduction frame; 2. an armature; 3. a stop sleeve; 4. a short circuit ring; 5. a fixing plate; 6. a compression spring; 7. setting a scale adjusting device; 8. a striker bar; 9. a guide bent plate; 10. a guide bar; 11. an outer hexagonal wrench; 21. an upper armature; 22. a non-conductive magnet; 23. a lower armature; 71. a threaded sleeve; 72. a large bevel gear; 73. a bevel pinion gear; 74. a worm; 75. a turbine; 76. a dial.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the following description further explains how the invention is implemented by combining the attached drawings and the detailed implementation modes.
As shown in fig. 1, 2 and 3, the invention provides a circuit breaker tripping device with a setting current adjusting function, which comprises a magnetic conduction frame 1, an armature 2, a stop sleeve 3, a fixed plate 5, a compression spring 6, a guide rod 10, a trip bar 8 and a setting scale adjusting device 7.
The middle part of the magnetic conduction frame 1 is provided with a first rectangular opening for a current-carrying copper bar of the circuit breaker to pass through, the upper part of the magnetic conduction frame is provided with an inverted triangular opening for arranging the armature 2, and the upper part of the inverted triangular opening is provided with a second rectangular opening for dividing a magnetic loop; the armature 2 is in an inverted triangle shape and consists of three parts: an upper armature 21, a lower armature 23, and a non-electromagnet 22; the non-magnetizer 22 is arranged in the middle of the armature 2; the upper armature 21, the lower armature 23 and the non-magnetizer 22 are fixedly connected.
The magnetic conduction frame 1, the lower armature 21 and a working air gap delta 1 between the lower armature and the lower armature form a first magnetic loop, the magnetic conduction frame 1, the upper armature 23 and a working air gap delta 2 between the upper armature and the lower armature form a second magnetic loop, the working air gap delta 2 of the second magnetic loop is smaller than the working air gap delta 2 of the first magnetic loop, and the magnetic flux area of the second magnetic loop is smaller than that of the first magnetic loop.
Furthermore, two short circuit rings 4 are symmetrically arranged on a second magnetic loop formed by the magnetic conduction frame 1, the upper armature 21 and a working air gap between the two.
The circuit breaker tripping device further comprises a positioning bent plate 9, the positioning bent plate 9 is fixed on the magnetic conduction frame 1, a positioning hole is formed in the positioning bent plate 9, and the impact rod 9 penetrates through the positioning hole.
A round hole is formed in the middle of the armature 2 and is used for the guide rod 10 to penetrate through; the fixed plate 5 is fixedly arranged at the top of the magnetic conduction frame 1, the stop sleeve 3 is arranged at the top end of the armature 2, and the fixed plate 5 and the stop sleeve 3 are used for limiting the armature 2; the guide rod 10 is connected with the fixed plate 5 in an interference fit manner; the compression spring 6 is sleeved on the guide rod 10, and the upper end of the compression spring is limited by the armature 2.
The working principle is as follows: the first magnetic circuit generates downward electromagnetic attraction force F1 to the armature 2, and the second magnetic circuit generates upward electromagnetic attraction force F2 to the armature 2, so that the armature 2 is subjected to the electromagnetic force. In the process of the circuit breaker loop current rising smoothly, at the initial moment, because delta 2 is less than delta 1, and F2 is more than F1, the armature 2 is subjected to upward electromagnetic attraction force. The armature 2 remains stationary due to the upper end limiting the armature 2. When the current rises to a certain value, the magnetic flux of the second magnetic circuit tends to saturate and F2 no longer increases. As the current further increases, the first magnetic circuit generates a further increase of the downward electromagnetic attraction force F1 to the armature 2, and finally the armature 2 pulls downward against the resistance of the spring 3 to trip the circuit breaker. Due to the existence of the second magnetic loop, the upper limit of tripping current of the large-current tripper is greatly increased under the condition that the rigidity of the spring 3 is not changed, and the circuit breaker can be used for large-capacity short-circuit protection.
When the loop current fluctuates up and down due to external interference, a magnetic field which changes along with current fluctuation is generated in a magnetic loop formed by the magnetic conduction frame 1, the armature 2 and the working air gap, the electromagnetic force applied to the armature 2 also changes along with the magnetic field, under the critical condition, if the electromagnetic force applied to the armature 2 fluctuates near the resistance value of the spring 3, the resultant force of the electromagnetic force and the spring force applied to the armature 2 can have the zero-crossing condition, at the moment, the armature can generate the phenomenon of vertical shaking, and if the shaking amplitude is too large, the phenomenon of false tripping of the circuit breaker can be generated. Preferably, in order to solve the problem, two short-circuit rings 4 are symmetrically arranged on a magnetic conduction frame 1 positioned in the second magnetic circuit, when a magnetic field changes along with current fluctuation, induced eddy current can be generated in the short-circuit rings 4 to block the change of magnetic flux passing through the second magnetic circuit, the electromagnetic force borne by the armature 2 can lag behind the change of magnetic flux, and the electromagnetic attraction of the armature 2 is compensated.
Further, if the expected trip current value of the circuit breaker is to be finely adjusted, the amount of compression of the compression spring 6 needs to be adjusted. Referring to fig. 6 to 9, preferably, the circuit breaker tripping device further includes a setting current scale adjusting device 7 disposed at the lower end of the magnetic conduction frame 1, for setting an initial compression amount of the compression spring 6. The larger the initial compression amount of the compression spring 6 is, the larger the resistance of the compression spring 6 to the armature 2 is, the larger the inrush current required to overcome the spring resistance is, and the larger the expected tripping current value of the circuit breaker is.
Preferably, the setting current scale adjusting device 7 comprises a threaded sleeve 71, a large bevel gear 72, a small bevel gear 73, a worm 74, a worm wheel 75 and a dial 76; the spring guide rod 8 is provided with threads and is connected with the threaded sleeve 71 through a screw pair; the large bevel gear 72 is connected with the threaded sleeve 71 through a flat key; the small bevel gear 73 and the worm 74 are fixedly connected together; the small bevel gear 73 is intermeshed with the large bevel gear 72, and the worm gear 75 is intermeshed with the worm 74; the turbine 75 is fixedly connected with the dial 76; the worm 74 is provided with a hexagonal square hole for matching with an external hexagonal wrench 15 for operation by a user.
The working principle of the user during operation is as follows: the worm 74 is provided with a hexagonal square hole, the external hexagonal wrench 11 is operated to rotate the worm 74, the worm drives the small bevel gear 73 to rotate, the small bevel gear 73 is in meshing transmission with the large bevel gear 72 to drive the threaded sleeve 71 to spirally ascend or descend along the axial direction of the guide rod 10, the up-and-down spiral motion of the threaded sleeve 71 compresses the compression spring 6 to different degrees, and the resistance of the compression spring 6 to the triangular magnetic conduction block 2 is changed. Meanwhile, when the worm 74 is rotated, the worm wheel 75 is engaged and driven, the worm wheel 75 is fixedly connected with the dial 76, and the engagement and driving of the worm wheel correspond to different indication scales. The indication scale is related to the compression amount of the spring and the expected tripping current value of the circuit breaker, the indication scale under a certain compression amount of the spring is recorded, the tripping current value of the circuit breaker in the state is obtained through a setting test, and the scale value corresponding to the expected tripping current is obtained. When a user needs different expected tripping current values according to the actual circuit operation condition of the circuit breaker, the user only needs to adjust the scales to the positions corresponding to the expected tripping currents. Particularly, the worm gear and the worm have a self-locking function, so that the circuit breaker setting current scale adjusting device is stable in structure and cannot cause vibration displacement due to circuit breaker opening and closing operation impact.
In conclusion, the circuit breaker tripping device with the setting current adjusting function provided by the invention can enable the circuit breaker to quickly realize tripping and brake separating when the loop current is abnormal, so that the safety of power supply equipment is ensured; and the setting current scale adjusting device adopts a bevel gear and worm gear structure, the worm gear has a self-locking characteristic, the stability of the scale can be ensured, meanwhile, the scale adjusting tool adopts a universal outer hexagonal wrench, the operation is simple and convenient, the reliability is high, the scale indication is easy to observe and read, and the user experience is improved.
Finally, the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, which should be covered by the claims of the present invention.
Claims (5)
1. A circuit breaker tripping device with a setting current adjusting function is characterized by comprising a magnetic conduction frame (1), an armature (2), a stop sleeve (3), a fixing plate (5), a compression spring (6), a guide rod (10), a striking rod (8) and a setting scale adjusting device (7);
the middle part of the magnetic conduction frame (1) is provided with a first rectangular opening for a current-carrying copper bar of a circuit breaker to pass through, the upper part of the magnetic conduction frame is provided with an inverted triangular opening for arranging the armature (2), and the upper part of the inverted triangular opening is provided with a second rectangular opening for dividing a magnetic loop;
the armature (2) is fixedly connected with the impact rod (8), when the armature (2) moves, the impact rod (8) is driven to move, the impact rod (8) impacts an interlocking structure, and tripping and opening of the circuit breaker are achieved;
a round hole is formed in the middle of the armature (2) and is used for the guide rod (10) to penetrate through;
the fixed plate (5) is fixedly arranged at the top of the magnetic conduction frame (1), the stop sleeve (3) is arranged at the top end of the armature (2), and the fixed plate (5) and the stop sleeve (3) are used for limiting the armature (2);
the guide rod (10) is connected with the fixing plate (5) in an interference fit manner;
the compression spring (6) is sleeved on the guide rod (10), and the upper end of the compression spring is limited by the armature (2);
the setting scale adjusting device (7) can adjust the compression amount of the compression spring (6) and is used for adjusting the setting current tripping value of the circuit breaker.
2. The circuit breaker trip device with the setting current adjusting function according to claim 1, wherein the setting current scale adjusting device (7) comprises a threaded sleeve (71), a large bevel gear (72), a small bevel gear (73), a worm (74), a worm wheel (75) and a dial (76);
the guide rod (10) is provided with threads and is connected with the threaded sleeve (71) in a screw pair mode;
the large bevel gear (72) is connected with the threaded sleeve (71) through a flat key;
the small bevel gear (73) is fixedly connected with the worm (74);
the small bevel gear (73) is meshed with the large bevel gear (72), and the worm wheel (75) is meshed with the worm (74);
the turbine (75) is fixedly connected with the dial (76);
the worm (74) is provided with a hexagonal square hole which is used for being matched with an external hexagonal wrench (11) for a user to operate.
3. The circuit breaker trip device with the set current adjusting function according to claim 2, wherein the armature (2) is in an inverted triangle shape and is composed of three parts: an upper armature (21), a lower armature (23) and a non-electromagnet (22); the non-magnetizer (22) is arranged in the middle of the armature (2); the upper armature iron (21), the lower armature iron (23) and the non-magnetizer (22) are fixedly connected;
the magnetic circuit comprises a magnetic conduction frame (1), a lower armature (23) and a working air gap between the magnetic conduction frame and the lower armature, wherein the working air gap between the magnetic conduction frame (1) and the lower armature (23) forms a first magnetic circuit, the working air gap between the magnetic conduction frame (1) and the upper armature (21) and the working air gap between the magnetic conduction frame and the upper armature form a second magnetic circuit, the working air gap of the second magnetic circuit is smaller than the working air gap of the first magnetic circuit, and the magnetic flux area of the second magnetic circuit is smaller than the magnetic flux area of the first magnetic circuit.
4. The circuit breaker tripping device with the setting current adjusting function according to claim 1, wherein two short circuit rings (4) are symmetrically arranged on a second magnetic loop formed by the magnetic conduction frame (1), the upper armature (21) and a working air gap between the two.
5. The circuit breaker tripping device with the setting current adjusting function according to claim 1, further comprising a positioning bent plate (9), wherein the positioning bent plate (9) is fixed on the magnetic conduction frame (1), a positioning hole is formed in the positioning bent plate (9), and the striker rod (9) penetrates through the positioning hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110417050.XA CN113161208B (en) | 2021-04-19 | 2021-04-19 | Circuit breaker tripping device with setting current adjusting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110417050.XA CN113161208B (en) | 2021-04-19 | 2021-04-19 | Circuit breaker tripping device with setting current adjusting function |
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| Publication Number | Publication Date |
|---|---|
| CN113161208A true CN113161208A (en) | 2021-07-23 |
| CN113161208B CN113161208B (en) | 2024-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110417050.XA Active CN113161208B (en) | 2021-04-19 | 2021-04-19 | Circuit breaker tripping device with setting current adjusting function |
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| Country | Link |
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| CN (1) | CN113161208B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725046A (en) * | 2021-09-15 | 2021-11-30 | 江苏大全凯帆电器有限公司 | Direct current overcurrent tripping device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916694A (en) * | 2010-08-17 | 2010-12-15 | 常熟开关制造有限公司(原常熟开关厂） | Current regulating device of thermomagnetic release of circuit breaker |
| DE102010035857A1 (en) * | 2010-06-25 | 2011-12-29 | Abb Ag | Magnet system for use in e.g. main circuit breaker in industrial application, has armature retained by permanent magnets and holding plate in starting position and after exceedance of preset short circuit current value to drive striker pin |
| CN203103245U (en) * | 2013-03-13 | 2013-07-31 | 浙江正泰电器股份有限公司 | Circuit breaker tripping mechanism capable of adjusting short-circuit instantaneous setting current |
| CN113161210A (en) * | 2021-04-19 | 2021-07-23 | 武汉长海电气科技开发有限公司 | Double-magnetic-circuit heavy-current release of circuit breaker |
| CN113555257A (en) * | 2021-04-19 | 2021-10-26 | 武汉长海电气科技开发有限公司 | Overload current tripping device of circuit breaker |
| CN214797300U (en) * | 2021-04-19 | 2021-11-19 | 武汉长海电气科技开发有限公司 | Circuit breaker tripping device with setting current adjusting function |
-
2021
- 2021-04-19 CN CN202110417050.XA patent/CN113161208B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010035857A1 (en) * | 2010-06-25 | 2011-12-29 | Abb Ag | Magnet system for use in e.g. main circuit breaker in industrial application, has armature retained by permanent magnets and holding plate in starting position and after exceedance of preset short circuit current value to drive striker pin |
| CN101916694A (en) * | 2010-08-17 | 2010-12-15 | 常熟开关制造有限公司(原常熟开关厂） | Current regulating device of thermomagnetic release of circuit breaker |
| CN203103245U (en) * | 2013-03-13 | 2013-07-31 | 浙江正泰电器股份有限公司 | Circuit breaker tripping mechanism capable of adjusting short-circuit instantaneous setting current |
| CN113161210A (en) * | 2021-04-19 | 2021-07-23 | 武汉长海电气科技开发有限公司 | Double-magnetic-circuit heavy-current release of circuit breaker |
| CN113555257A (en) * | 2021-04-19 | 2021-10-26 | 武汉长海电气科技开发有限公司 | Overload current tripping device of circuit breaker |
| CN214797300U (en) * | 2021-04-19 | 2021-11-19 | 武汉长海电气科技开发有限公司 | Circuit breaker tripping device with setting current adjusting function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725046A (en) * | 2021-09-15 | 2021-11-30 | 江苏大全凯帆电器有限公司 | Direct current overcurrent tripping device |
| CN113725046B (en) * | 2021-09-15 | 2024-04-23 | 江苏大全凯帆电器有限公司 | DC overcurrent tripping device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113161208B (en) | 2024-06-25 |
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