CN118053704A - Residual current operated circuit breaker with overcurrent protection and leakage indication - Google Patents
Residual current operated circuit breaker with overcurrent protection and leakage indication Download PDFInfo
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- CN118053704A CN118053704A CN202410391724.7A CN202410391724A CN118053704A CN 118053704 A CN118053704 A CN 118053704A CN 202410391724 A CN202410391724 A CN 202410391724A CN 118053704 A CN118053704 A CN 118053704A
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- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The residual current operated circuit breaker with the overcurrent protection and the leakage indication comprises a shell, wherein an operating mechanism and a contact mechanism which is arranged in the shell in a linkage way with the operating mechanism are arranged in the shell, the residual current operated circuit breaker further comprises a leakage indication mechanism, the contact mechanism comprises a moving contact and a fixed contact, the operating mechanism comprises a lock catch and a jump buckle which are rotatably arranged on the shell, the lock catch and the moving contact are driven by a first torsion spring, and the lock catch and the jump buckle can operate between locking and unlocking; the electric leakage indicating mechanism comprises an indicating piece and a stopping piece which are rotatably arranged in the shell, the stopping piece and the indicating piece can operate between locking and unlocking, and the stopping piece is connected with the jump buckle.
Description
Technical Field
The invention relates to a residual current operated circuit breaker with an overcurrent protection function and an electric leakage indication function.
Background
A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time. The circuit breaker is divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the application range, and the division of a high-voltage boundary line and a low-voltage boundary line is fuzzy, and is generally called as a high-voltage electrical appliance with the voltage of more than 3 kV. The circuit breaker can be used for distributing electric energy, starting the asynchronous motor infrequently, protecting a power line, the motor and the like, and automatically cutting off the circuit when serious overload or short circuit, undervoltage and other faults occur, and the functions of the circuit breaker are equivalent to the combination of a fuse type switch, an over-under-heating relay and the like. And the parts are not required to be changed after breaking the fault current. A wide range of applications have been achieved. In the process of electricity generation, transportation and use, power distribution is an extremely important link. The distribution system comprises a transformer and various high-low voltage electrical equipment, and a low-voltage circuit breaker is an electrical appliance with wide application range.
Circuit breakers generally consist of a contact system, an arc extinguishing system, an operating mechanism, a trip, a housing, etc. When short circuit, the magnetic field generated by large current (generally 10 to 12 times) overcomes the counter-force spring, the release pulls the operating mechanism to act, and the switch is tripped instantaneously. When overload occurs, the current increases, the heating value increases, and the bimetal deforms to a certain extent to push the mechanism to operate (the larger the current is, the shorter the operation time is). The main contact of the low-voltage circuit breaker is manually operated or electrically closed. After the main contact is closed, the free tripping mechanism locks the main contact at the closing position. The coil of the overcurrent release and the thermal element of the thermal release are connected in series with the main circuit, and the coil of the undervoltage release is connected in parallel with the power supply. When the circuit is short-circuited or severely overloaded, the armature of the overcurrent release is attracted, so that the free release mechanism acts, and the main contact opens the main circuit. When the circuit is overloaded, the thermal element of the thermal trip heats to bend the bimetallic strip and push the free trip mechanism to act. When the circuit is under-voltage, the armature of the under-voltage release is released, so that the free release mechanism acts.
For the residual current operated circuit breaker with overcurrent protection, the traditional product has a mechanical indication, the product is in an opening and closing state, whether the internal contact of the product is open or closed can be judged through the color displayed by the mechanical indication, and when the lower end circuit fails (overload, short circuit and residual current), the product protects and opens, because the indication only can judge whether the contact of the product is in a state of processing opening or closing, and cannot judge the specific cause (overload, short circuit and residual current) of the failure, and the difficulty is increased for subsequent line inspection and modification.
Disclosure of Invention
The invention aims to provide a residual current operated circuit breaker with an electric leakage indication and overcurrent protection, which can judge specific reasons through the electric leakage indication of a product when a circuit fails, and provides a clear direction for the subsequent circuit fault diagnosis.
The above object of the present invention is achieved by the following means:
The residual current operated circuit breaker with the overcurrent protection and the leakage indication comprises a shell, wherein an operating mechanism and a contact mechanism which is arranged in the shell in a linkage way with the operating mechanism are arranged in the shell, the residual current operated circuit breaker further comprises a leakage indication mechanism, the contact mechanism comprises a moving contact and a fixed contact, the operating mechanism comprises a lock catch and a jump buckle which are rotatably arranged on the shell, the lock catch and the moving contact are driven by a first torsion spring, and the lock catch and the jump buckle can operate between locking and unlocking;
The method is characterized in that: the electric leakage indicating mechanism comprises an indicating piece and a stopping piece which are rotatably arranged in the shell, the stopping piece and the indicating piece can operate between locking and unlocking, and the stopping piece is connected with the jump buckle.
Further, the indicator comprises a leakage indicator and a brake separating indicator which are fixed through buckles, and a first coil spring is arranged between the indicator and the shell.
Further, the stopper is provided with a clamping groove, the clamping groove can lock the opening indicator, and when the opening indicator and the stopper are unlocked, the indicator rotates to enable the leakage indicator to rotate to the position right above.
Further, the stop piece and the jump buckle are fixedly connected through a U-shaped piece, and a second coil spring is arranged between the stop piece and the shell.
Further, the electric leakage protection device also comprises a release arranged in the shell, and when electric leakage occurs, the release pushes the lock catch to move, so that the lock catch is unlocked to move forwards, and the U-shaped piece simultaneously pulls the stop piece.
Further, the device also comprises a mechanical indicator which is connected with the movable contact, the mechanical indicator comprises a closing indicator piece.
Furthermore, the release is an electromagnetic release or an electronic release, wiring terminals are further arranged on two sides in the shell, and the wiring terminals are respectively connected with the moving contact and the fixed contact.
Further, two openings are formed in the upper surface of the shell, and the two openings correspond to the mechanical indicator and the leakage indicator respectively.
Further, the leakage indicator and the opening indicator are coaxially and rotatably installed in the shell.
Further, a third coil spring is arranged between the lock catch and the shell, one end of the lock catch is provided with a positioning rod, and the positioning rod can be abutted with the shell.
The technical effects of the scheme of the invention can be achieved as follows:
The residual current operated circuit breaker with the leakage indication and the overcurrent protection can judge specific reasons through the leakage indication after a product is disconnected due to line faults, so that a clear direction is provided for subsequent line fault diagnosis. If the line has no leakage fault, the release has no release, or has tripping caused by other faults (overload and short circuit), the stop piece always locks the leakage indicator, and the leakage indicator of the product shell does not act. The increase of the leakage indication is more accurate in judging when the line fails, the convenience is provided for the elimination of the line failure, the working efficiency is improved, and the market demand is met.
Drawings
Fig. 1 is a structural view of a circuit breaker of the present invention.
Fig. 2 is an internal structural view of the circuit breaker of the present invention.
Fig. 3 is a schematic diagram of the unlocking state of the circuit breaker according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 3, a residual current operated circuit breaker with an electric leakage indication and overcurrent protection comprises a shell 11, wherein an operating mechanism and a contact mechanism which is arranged in linkage with the operating mechanism are arranged in the shell 11, the residual current operated circuit breaker further comprises an electric leakage indication mechanism 2, the contact mechanism comprises a moving contact and a fixed contact, the operating mechanism comprises a lock catch 7 and a jump button 9 which are rotatably arranged on the shell, the lock catch and the moving contact are driven by a first torsion spring, and the lock catch 7 and the jump button 9 can operate between locking and unlocking;
Wherein, the electric leakage indicating mechanism 1 comprises an indicating piece and a stopping piece 4 which are all rotatably installed in a shell 11, the stopping piece 4 and the indicating piece can operate between locking and unlocking, and the stopping piece 4 is connected with the jump button 9. The indicator comprises a red leakage indicator 6 and a white brake separating indicator 5 which are fixed by a buckle, and a first coil spring is arranged between the indicator and the shell 11.
The stop piece is provided with a clamping groove, the clamping groove can lock the opening indicator 5, and when the indicator and the stop piece 4 are unlocked, the indicator rotates to enable the leakage indicator to rotate to the position right above. The stop piece 4 and the lock catch 7 are fixedly connected through the U-shaped piece 3, and a second coil spring is arranged between the stop piece 4 and the shell.
The electric leakage protection device also comprises a release 12 arranged in the shell 11, and the release pushes the lock catch to displace when electric leakage occurs, so that the lock catch 9 is unlocked and moves forwards, and the U-shaped piece 3 simultaneously pulls the stop piece 4.
The mechanical indicator 1 is connected to the moving contact and comprises a closing indicator piece.
The release 12 is an electromagnetic release or an electronic release, and two sides in the shell 11 are also provided with connecting terminals, and the connecting terminals are respectively connected with the moving contact and the fixed contact.
The upper surface of the shell 11 is provided with two openings, and the two openings respectively correspond to the mechanical indicator 1 and the leakage indicator mechanism 2. The leakage indicator 6 and the opening indicator 5 are coaxially and rotatably installed in the shell 11, a third coil spring 8 is arranged between the lock catch 9 and the shell 11, a positioning rod 10 is arranged at one end of the lock catch 9, and the positioning rod 10 can be abutted to the shell 11.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. The residual current operated circuit breaker with the overcurrent protection and the leakage indication comprises a shell, wherein an operating mechanism and a contact mechanism which is arranged in the shell in a linkage way with the operating mechanism are arranged in the shell, the residual current operated circuit breaker further comprises a leakage indication mechanism, the contact mechanism comprises a moving contact and a fixed contact, the operating mechanism comprises a lock catch and a jump buckle which are rotatably arranged on the shell, the lock catch and the moving contact are driven by a first torsion spring, and the lock catch and the jump buckle can operate between locking and unlocking;
The method is characterized in that: the electric leakage indicating mechanism comprises an indicating piece and a stopping piece which are rotatably arranged in the shell, the stopping piece and the indicating piece can operate between locking and unlocking, and the stopping piece is connected with the jump buckle.
2. The circuit breaker of claim 1, wherein the indicator comprises a snap-fit leakage indicator and a break indicator, the indicator and the housing having a first coil spring therebetween.
3. The circuit breaker of claim 2, wherein the stopper is provided with a catching groove which can lock the opening indicator, and when the opening indicator and the stopper are unlocked, the indicator rotates so that the leakage indicator rotates to right above.
4. The circuit breaker of claim 3, wherein the stopper and the trip buckle are fixedly connected via a U-shaped member, and a second coil spring is provided between the stopper and the housing.
5. The circuit breaker of claim 4, further comprising a release disposed within the housing, the release pushing the latch to displace upon the occurrence of an electrical leak such that the latch is unlocked to move forward, thereby causing the U-shaped member to simultaneously pull the stop.
6. The circuit breaker of claim 1, further comprising a mechanical indicator connected to the moving contact, the mechanical indicator comprising a closing indicator tab.
7. The circuit breaker of claim 5, wherein the release is an electromagnetic release or an electronic release, and connecting terminals are further arranged on two sides in the housing, and the connecting terminals are respectively connected with the moving contact and the fixed contact.
8. The circuit breaker of claim 6, wherein the housing upper surface is provided with two openings corresponding to the mechanical and electrical leakage indicators, respectively.
9. The circuit breaker of claim 2, wherein, the electric leakage indicator and the opening indicator are coaxially and rotatably arranged in the shell.
10. The circuit breaker of claim 1, wherein a third coil spring is disposed between the latch and the housing, and wherein a positioning rod is disposed at one end of the latch, the positioning rod being capable of abutting the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410391724.7A CN118053704A (en) | 2024-04-02 | 2024-04-02 | Residual current operated circuit breaker with overcurrent protection and leakage indication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410391724.7A CN118053704A (en) | 2024-04-02 | 2024-04-02 | Residual current operated circuit breaker with overcurrent protection and leakage indication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118053704A true CN118053704A (en) | 2024-05-17 |
Family
ID=91050231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410391724.7A Pending CN118053704A (en) | 2024-04-02 | 2024-04-02 | Residual current operated circuit breaker with overcurrent protection and leakage indication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118053704A (en) |
-
2024
- 2024-04-02 CN CN202410391724.7A patent/CN118053704A/en active Pending
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