CN115547772B - A circuit breaker - Google Patents
A circuit breakerInfo
- Publication number
- CN115547772B CN115547772B CN202110740235.4A CN202110740235A CN115547772B CN 115547772 B CN115547772 B CN 115547772B CN 202110740235 A CN202110740235 A CN 202110740235A CN 115547772 B CN115547772 B CN 115547772B
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- lightning protection
- pole
- circuit board
- protection module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
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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
- H01H71/08—Terminals; Connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
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- Breakers (AREA)
Abstract
一种断路器，包括至少一个断路器极，在所述断路器极的两端分别设有进线端子和出线端子，在进线端子与出线端子之间的主线路由触头机构控制，所述触头机构由操作机构驱动进行分合闸，在所述断路器极的主线路上还连接有脱扣装置和防雷模块，在防雷模块与脱扣装置之间连接有控制电路，在防雷模块产生防雷动作或发生故障时，脱扣装置通过控制电路得电触发操作机构脱扣。本发明的一种断路器，在内置防雷模块与脱扣装置之间设置有控制电路，在防雷模块发生故障后触发脱扣装置，方便监测防雷模块是否处于正常运行的状态，提高了断路器的使用安全性，其中，在防雷模块产生防雷动作时，已为断路器提供了防雷保护，再配合脱扣装置为断路器提供了双重保护。
A circuit breaker includes at least one circuit breaker pole, with an input terminal and an output terminal at both ends of the pole. The main circuit between the input and output terminals is controlled by a contact mechanism, which is driven by an operating mechanism for opening and closing. A tripping device and a surge protection module are also connected to the main circuit of the circuit breaker pole. A control circuit connects the surge protection module and the tripping device. When the surge protection module activates its surge protection function or malfunctions, the tripping device is energized by the control circuit to trigger the operating mechanism to trip. This circuit breaker of the present invention provides a control circuit between the built-in surge protection module and the tripping device. The tripping device is triggered after a surge protection module malfunctions, facilitating monitoring of whether the surge protection module is operating normally and improving the safety of the circuit breaker. The surge protection module already provides surge protection when it activates its surge protection function, and the tripping device further provides dual protection for the circuit breaker.
Description
Technical Field
The invention relates to the field of piezoelectric devices, in particular to a circuit breaker.
Background
In the prior art, a lightning protection module is not usually arranged or is simply assembled in the circuit breaker, and a user cannot find out whether the lightning protection module is in a fault state in time due to lack of monitoring on the operation state of the lightning protection module, so that a certain potential safety hazard exists in the use of the circuit breaker.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a circuit breaker with a built-in lightning protection module.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The utility model provides a circuit breaker, includes at least one circuit breaker pole, be equipped with incoming line terminal, outgoing line terminal, contact mechanism, operating device and be used for driving the trip gear of operating device dropout in the at least one circuit breaker pole, still be equipped with lightning protection module and the controlling means who is used for triggering the trip gear in the at least one circuit breaker pole, be connected with switching device between trip gear and controlling means, trigger switching device when lightning protection module produces lightning protection action or breaks down, make controlling means trigger trip gear drive operating device and trip.
Further, still include the circuit board, controlling means sets up on the circuit board, switching device is connected with the circuit board electricity, connects between trip gear and controlling means through the circuit board, and lightning protection module is connected and inserts in the main line of corresponding circuit breaker pole with the circuit board.
Further, including a plurality of circuit breaker poles that are equipped with lightning protection module, a plurality of circuit breaker poles include at least one N looks extremely and at least one L looks extremely, in the L looks extremely, lightning protection module's first pin is connected with the outgoing line terminal of L looks extremely, and lightning protection module's second pin is connected with the outgoing line terminal of N looks extremely.
Further, including a plurality of circuit breaker poles that are equipped with lightning protection module, the operating device linkage of two adjacent circuit breaker poles is connected, sets up trip gear in one of them circuit breaker pole, and the lightning protection module of at least two circuit breaker poles is connected with same trip gear through respective switching device.
Further, the lightning protection modules and the switching devices of the plurality of circuit breaker poles are electrically connected with the same circuit board.
Further, a first pin of the switching device of each breaker pole is connected with a first pin of the tripping device through a circuit board, a second pin of the switching device of each breaker pole is connected with a corresponding control device or connected with the same control device through the circuit board, a second pin of the tripping device is connected with the circuit board, and the circuit board is electrically connected with an outgoing line terminal of each breaker pole.
Further, including the shell, the shell includes a plurality of installation cavities that hold each circuit breaker utmost point of divided, reserves the cavity that is used for assembling lightning protection module in the installation cavity of each circuit breaker utmost point, and the cavity opening of a plurality of cavities sets up the mounting groove that spans a plurality of cavity open-ended jointly in the same side of shell side by side, lightning protection module passes through the assembly that the mounting groove corresponds in the cavity of each circuit breaker utmost point, the circuit board is installed in the mounting groove, the mounting groove is closed by the apron lid.
Further, the switch device is a micro switch integrated in the lightning protection module or an external micro switch matched with the lightning protection module.
Further, a tripping device is arranged in each breaker pole, and when the lightning protection module breaks down, the tripping device triggers an operating mechanism of the corresponding breaker pole to trip.
Further, the outgoing terminal of the N-phase pole is electrically connected with an external PE wire.
According to the circuit breaker, the control circuit is arranged between the built-in lightning protection module and the tripping device, the tripping device is triggered after the lightning protection module generates lightning protection action or breaks down, whether the lightning protection module is in a normal running state or not is conveniently monitored, and the use safety of the circuit breaker is improved.
In addition, the micro switch and the control device of the lightning protection module are arranged on a circuit board, so that the wiring is convenient, and particularly in a multipole circuit breaker, the lightning protection module shares the circuit board, so that the plurality of lightning protection modules are convenient to wire and small in occupied space.
In addition, a plurality of lightning protection modules share one tripping device, so that the space occupation is small and the cost is reduced.
In addition, the outgoing terminal of the N phase pole is connected with an external PE wire, so that the circuit breaker realizes grounding protection.
Drawings
Fig. 1 is a schematic diagram of a circuit breaker of the present invention;
fig. 2 is a schematic structural view of a circuit breaker according to the present invention;
fig. 3 is an exploded view of a circuit breaker of the present invention;
Fig. 4 is a circuit diagram of a circuit breaker (including a plurality of trip devices) according to the present invention;
Fig. 5 is a circuit diagram of a circuit breaker (including a trip device) of the present invention;
fig. 6 is a schematic view showing a structure of a mounting groove in a circuit breaker according to the present invention;
fig. 7 is a schematic structural view of an L-phase pole in a circuit breaker according to the present invention;
Fig. 8 is a front view of fig. 7;
fig. 9 is a schematic view of the structure of an N-phase pole in a circuit breaker according to the present invention;
Fig. 10 is a front view of fig. 9 (without conductive structures).
Detailed Description
A specific embodiment of a circuit breaker according to the present invention is further described below with reference to the examples shown in fig. 1 to 10. A circuit breaker of the present invention is not limited to the description of the following embodiments.
An embodiment of a circuit breaker is a plug-in circuit breaker, and comprises a shell 1, wherein at least one circuit breaker pole is arranged on the shell 1, two ends of the circuit breaker pole are respectively used as a first wiring terminal and a second wiring terminal, a first wiring port is arranged on the first wiring terminal, a first wiring terminal is correspondingly arranged on the first wiring port, a second wiring port is arranged on the second wiring terminal, a socket structure is adopted in the second wiring port, a second wiring terminal with a bus bar 7721 is correspondingly arranged in the second wiring port, an operating mechanism 74 and a contact mechanism are arranged between the first wiring terminal and the second wiring terminal, the operating mechanism 74 is connected with the contact mechanism in a linkage mode, the operating mechanism 74 performs opening and closing actions through driving the contact mechanism to control a main circuit connected between the first wiring terminal and the second wiring terminal, an arc-extinguishing chamber 72 is arranged between the contact mechanism and the second wiring terminal, a current transformer 73 is arranged between the arc-extinguishing chamber 72 and the second wiring terminal, an operating member 71 is further arranged on the first wiring terminal of the at least one circuit breaker pole, an operating member 71 is arranged on one side of the first wiring port, an operating member 71 is provided with an operating member 71, and a manual opening and a closing operation member 71 is arranged in the operating member. The operating member 71 of the present embodiment is a button slidably disposed in a straight line, and one end of the button extending into the pole of the circuit breaker is linked with the operating mechanism 74, so that the opening/closing of the circuit breaker can be manually operated by pressing the button. Of course, as another embodiment, the operating member may be a swinging handle mechanism.
Further, the circuit breaker includes a plurality of circuit breaker poles that set up side by side, and operating mechanism 74 linkage of two adjacent circuit breaker poles is connected, and at least one circuit breaker pole is equipped with operating piece 71, or every circuit breaker pole all is equipped with operating piece 71, and operating piece 71 linkage of two adjacent circuit breaker poles is connected for realize the manual divide-shut brake of multipole circuit breaker. Preferably, a control circuit board and an electric operation module 6 driven by the control circuit board are arranged between one group of two adjacent breaker poles, the electric operation module 6 is matched with an operation mechanism 74 of one breaker pole, the operation mechanisms 74 of the other breaker poles are driven to realize automatic opening and closing of the breaker, and the automatic opening and closing can be realized only by arranging one electric operation module 6.
An improvement of the application is that a lightning protection module 5 is connected in the main circuit of the circuit breaker pole, the lightning protection module 5 is positioned between the current transformer 73 and the second wiring terminal, and the assembly of the lightning protection module 5 is simplified by arranging the lightning protection module 5 in the circuit breaker, thereby facilitating the assembly and the replacement.
Preferably, when at least two parallel-arranged breaker poles are included, the lightning protection modules 5 of adjacent two breaker poles are connected in parallel. The at least two breaker poles comprise an N-phase pole 3 and at least one L-phase pole 2, no current transformer 73 is arranged in the N-phase pole 3, and the lightning protection module 5 is arranged between the arc extinguishing chamber 72 and the outlet terminal 772 of the N-phase pole 3. Specifically, in the application, a first wiring terminal of each circuit breaker pole is a wire inlet terminal, a first wiring port and a first wiring terminal which are arranged on the first wiring terminal are a wire inlet port and a wire inlet terminal 771 respectively, a second wiring terminal is a wire outlet terminal, a second wiring port and a second wiring terminal which are arranged on the second wiring terminal are a wire outlet port and a wire outlet terminal 772 respectively, a plurality of circuit breaker poles of the circuit breaker comprise at least one N-phase pole 3 and at least one L-phase pole 2, a first pin of the lightning protection module 5 is connected with the wire outlet terminal 772 of the L-phase pole 2 in the L-phase pole 2, a second pin is connected with the wire outlet terminal 772 of the N-phase pole 3, and a first pin and a second pin of the lightning protection module 5 are connected with the wire outlet terminal 772 of the N-phase pole 3 respectively in the N-phase pole 3. Of course, when the first connection terminal is the wire outgoing terminal 772 and the second connection terminal is the wire incoming terminal 771, the first pin of the lightning protection module 5 in the L-phase pole 2 is connected with the wire incoming terminal 771 of the L-phase pole 2, the second pin is connected with the wire incoming terminal 771 of the N-phase pole 3, and in the N-phase pole 3, the first pin and the second pin of the lightning protection module 5 are respectively connected with the wire incoming terminal 771 of the N-phase pole.
Another improvement of the application is that the lightning protection module 5 is matched with the tripping device 4 in the circuit breaker, so as to realize monitoring whether the lightning protection module 5 is in a normal working state. The control device 53 for triggering the tripping device 4 is further arranged in at least one circuit breaker pole, the control device 53 is used for being connected with an external power supply to form a control circuit for triggering the tripping device 4, a switching device is connected between the tripping device 4 and the control device 53, the switching device is triggered when the lightning protection module 5 acts or breaks down due to the lightning protection function, the control device 53 triggers the tripping device 4 to drive the operating mechanism 74 to trip, accordingly, the lightning protection module 5 can be judged to be in a fault state, the circuit breaker cannot be normally used, and the use safety of the circuit breaker is further improved.
Specifically, the control device 53 is configured to be connected with an external power source to form a control circuit for triggering the trip device 4, where the trip device 4 may be an electromagnetic trip, the control device 53 includes a control chip, a diode, and other elements for triggering the trip device 4 to drive the operating mechanism 74 to trip, and the switch device is a micro switch 52, where the micro switch 52 may be the micro switch 52 integrated in the lightning protection module 5, or an external micro switch 52 matched with the lightning protection module 5, and when the lightning protection module 5 fails, the micro switch 52 is triggered to be closed, which is a prior art in the field and is not repeated. An improvement point of the application is that a switching device matched with the lightning protection module 5 is connected between the tripping device 4 and the control device 53, when the lightning protection module 5 generates lightning protection action, the lightning protection module 5 has realized the function of providing lightning protection for the circuit breaker, when the switching device is triggered to enable the control device to trigger the tripping device 4, the circuit breaker is tripped and powered off, the protection is further provided for the circuit breaker, the circuit breaker is provided with double protection, or when the lightning protection module 5 fails to trigger the switching device, the tripping device 4 is still triggered to enable the circuit breaker to be tripped and powered off, and the use safety of the circuit breaker is provided.
Preferably, the circuit breaker includes a plurality of circuit breaker poles that are equipped with lightning protection module 5, and operating device 74 linkage of two adjacent circuit breaker poles is connected, sets up trip gear 4 in one of them circuit breaker pole, and the lightning protection module 5 of two at least circuit breaker poles is connected with same trip gear 4 through respective switching device, and a plurality of lightning protection module 5 share a trip gear 4, and occupation space is little and reduce cost not only. Preferably, the tripping device 4 is only arranged in one breaker pole, the other breaker poles are not provided with the tripping device 4, the control circuits of the lightning protection modules 5 of each breaker pole are all connected with the same tripping device 4, when one of the lightning protection modules 5 generates lightning protection action or breaks down, the tripping mechanism 4 triggers the corresponding operating mechanism 74 to trip, and the operating mechanism 74 drives the other operating mechanisms 74 to trip. Preferably, the tripping device 4 is arranged in one L-phase pole 2. Obviously, as an alternative embodiment, a trip device 4 cooperating with the operating mechanism 74 may be provided in each breaker pole, and the trip devices 4 in each breaker pole may be connected in parallel.
Preferably, the circuit breaker further comprises a circuit board 51, the control device 53 of the circuit breaker pole is arranged on the circuit board 51, the control device 53 can also have the functions of acquiring signals fed back by other internal devices (such as a current transformer 73) and transmitting the signals outwards, meanwhile, the control device 53 also has the functions of remotely controlling the on-off of the circuit breaker, controlling the electric operation module 6, acquiring external control signals and the like, the switch device is electrically connected with the circuit board 51, is connected between the tripping device 4 and the control device 53 through the circuit board 51, the lightning protection module 5 is connected with the circuit board 51 and is connected into a main circuit of the corresponding circuit breaker pole, the control device 53 is connected with an external power supply through the circuit board 51, and wiring is simplified through the circuit board 51. Preferably, the lightning protection modules 5 and the switching devices of the plurality of circuit breaker poles are electrically connected with the same circuit board 51, so that not only is wiring convenient, but also the trip device 4 is convenient to share, and the lightning protection modules 5 are integrally installed on the circuit board 51, thereby realizing integral assembly. Preferably, the lightning protection modules 5 of at least two breaker poles are connected to the same control device 53 on the circuit board 51, and the switching devices of at least two breaker poles are connected in parallel between the same tripping device 4 and the same control device 53, sharing the same control device 53 on the circuit board 51.
Referring to fig. 4 and 5, the connection relationship between the lightning protection module 5 and the trip device 4 will be described in detail, as shown in fig. 4 and 5, in the L-phase pole 2, the first pin of the lightning protection module 5 is electrically connected with the outlet terminal 772 of the L-phase pole 2, the second pin of the lightning protection module 5 is electrically connected with the outlet terminal 772 of the N-phase pole 3, and in the N-phase pole 3, the first pin and the second pin of the lightning protection module 5 are respectively electrically connected with the outlet terminal 772 of the N-phase pole 3.
As shown in fig. 4, a trip device 4 matched with an operating mechanism 74 is arranged in each breaker pole, a lightning protection module 5, a control device 53 and a switching device are arranged in each breaker pole, the switching device is a micro switch 52, the control device 53 comprises a control chip, a diode and other elements, the control device 53 is connected with an external power supply to form a control circuit for controlling the trip device 4, the micro switch 52 is connected between the control device 53 and the trip device 4, the on-off of the control circuit is controlled by the micro switch 52, preferably, the micro switch 52 and the control device 53 are arranged on a circuit board 51, a first pin of the micro switch 52 is connected with a first pin of the trip device 4, a second pin of the micro switch 52 is connected with a first pin of the control device 53, a second pin of the control device 53 is connected with an external power supply through the circuit board 51, at the moment, the first pin of the trip device 4 is different from the second pin, the micro switch 52 generates a lightning protection action or faults when the lightning protection module 5 generates a lightning protection action to enable the control device 52 to be conducted by the control device 53, and the operating mechanism is triggered by the control device 53.
Further, as shown in fig. 5, when only one L-phase pole 2 is provided with the trip device 4, the first pins of the micro switches 52 of all the lightning protection modules 5 are connected in parallel through the circuit board 51, then connected with the first pins of the trip device 4, the second pins of the switch devices of each circuit breaker pole are connected with the first pins of the corresponding control devices 53 through the circuit board 51 or connected with the same control device 53, the second pins of the control devices 53 are connected with an external power supply through the circuit board 51, the second pins of the trip device 4 are connected with the circuit board 51, the circuit board 51 is electrically connected with the wire outgoing terminals 772 of each circuit breaker pole, when one of the lightning protection modules 5 generates lightning protection action or fails, the micro switches 52 of the lightning protection modules 5 are closed to conduct the control circuit controlled by the micro switches 52, the trip device 4 triggers the operation mechanism 74 to trip after obtaining the external power supply, and the operation mechanisms 74 of other circuit breaker poles trip under the linkage action.
Preferably, the circuit board 51 is disposed at one side of the lightning protection module 5 and is disposed in each breaker pole in a penetrating manner, that is, all the lightning protection modules 5 share one circuit board 51, so that the wiring process is simplified.
Further, as shown in fig. 6, the housing 1 includes a plurality of separated installation cavities for accommodating the circuit breaker poles, a cavity a for assembling the lightning protection module 5 is reserved in each installation cavity of the circuit breaker poles, the cavity openings of the plurality of cavities a are arranged side by side on the same side of the housing 1 to jointly form an installation groove 11 spanning the plurality of cavity openings, the lightning protection module 5 is correspondingly assembled in the cavity a of each circuit breaker pole through the installation groove 11, the circuit board 51 is installed in the installation groove 11, and the installation groove 11 is covered by the cover plate 12. Preferably, the opening direction of the cavity is perpendicular to the direction of inserting the circuit breaker into the cabinet, so that the assembly of the lightning protection modules 5 is facilitated, and in addition, when a plurality of lightning protection modules 5 share one circuit board 51, the assembly of the circuit board 51 is also facilitated by the mounting groove 11 formed on one side of the housing 1.
An embodiment of a layout structure of a circuit breaker is provided in connection with fig. 1-3 and 6-10, and in this embodiment, the circuit breaker includes four circuit breaker poles arranged in parallel, one of the circuit breaker poles is an N-phase pole 3, and the other three circuit breaker poles are L-phase poles 2.
As shown in fig. 2, 3, 7 and 8, the L-phase pole 2 includes an L-phase housing 21, the L-phase housing 21 includes an upper cover and a base, two ends of the L-phase housing 21 are respectively used as a wire inlet end and a wire outlet end, the wire inlet end and the wire outlet end are respectively provided with a wire inlet and a wire outlet, the wire inlet opening and the wire outlet are respectively and correspondingly provided with a wire inlet terminal 771 and a wire outlet terminal 772, one side of the wire inlet is provided with an operation piece hole, an operation piece 71 in sliding fit with the L-phase housing 21 is assembled in the operation piece hole, the operation piece 71 and the wire outlet terminal 772 are arranged along the same side of the L-phase pole 2, and the operation pieces 71 of two adjacent L-phase poles 2 are in linkage connection.
The lightning protection device comprises an operating mechanism 74, a contact mechanism, an arc extinguish chamber 72, a current transformer 73 and a lightning protection module 5, wherein the operating mechanism 74 and the contact mechanism are arranged in the middle of an L-phase pole 2, the contact mechanism comprises a moving contact 751 and a fixed contact 752 which are matched with each other, the moving contact 751 is connected to the operating mechanism 74, the fixed contact 752 is fixedly arranged on one side of an L-phase shell 21, and the arc extinguish chamber 72, the current transformer 73 and the lightning protection module 5 are sequentially arranged between the contact mechanism and the outlet terminal 772. Further, an overload protection mechanism 76 is further arranged on one side of the operating mechanism 74, and the overload protection mechanism 76 is matched with the operating mechanism 74 to trigger the operating mechanism 74 to trip when overload faults occur. As shown in fig. 3, an electric operation module 6 is disposed between two adjacent L-phase poles 2, the electric operation module 6 is driven and controlled by a control circuit board (not shown), in this embodiment, the control circuit board may be composed of a circuit board 51 and a control device 53 disposed on the circuit board 51, all lightning protection modules 5 share one control device 53, a communication hole is disposed on a side wall of one L-phase housing 21, the electric operation module 6 passes through the communication hole and is connected with an operation mechanism 74 of the L-phase pole 2 in linkage, the electric operation module 6 includes a motor 61 and a gear set 62, wherein the motor 61 is in driving connection with the control circuit board, an output end of the motor 61 is meshed with the gear set 62, the gear set 62 includes at least an output gear and a plurality of transmission gears connected between the motor 61 and the output gear, the output gear passes through the communication hole and extends into the L-phase pole 2 to be meshed with a linkage 741 of the operation mechanism 74, and when the motor 61 is driven to rotate forward or backward, the circuit breaker is driven to perform automatic switching on or off.
Specifically, the operating member 71 includes a button and a connecting member, one end of the button is slidably assembled in the hole of the operating member, one end of the button is connected with the connecting member disposed in the L-phase housing 21 through a connecting rod, the connecting member is connected with the operating mechanism 74 in a linkage manner, or the operating member 71 is an integral mechanism, and one end extending into the L-phase housing 21 is connected with the operating mechanism 74 in a linkage manner. As shown in fig. 3, 6 and 8, a stopper portion for isolating the operating piece 71 from the wire-feeding terminal 771 is provided between the operating piece hole of the L-phase housing 21 and the wire-feeding port, preventing the wire from being wound to cause inconvenience in operation. Preferably, the limiting part includes a connecting arm 131 formed by protruding the L-phase housing 21 and a limiting shaft 132 disposed on the connecting arm 131, the limiting shaft 132 separates the operating member 71 from the wire inlet, as shown in fig. 6 and 8, the connecting arm 131 is disposed only on two circuit breakers located at the side (i.e. located at one L-phase pole 2 and N-phase pole 3 respectively), and one limiting shaft 132 is disposed between the two connecting arms 131, so that the operating members 71 of all circuit breakers are separated by the same limiting shaft 132.
The operating mechanism 74 comprises a linkage 741, a supporting member, a jump buckle, a lock catch 742, a first connecting rod and a second connecting rod, the linkage 741 and the supporting member are rotationally assembled in the middle of a circuit breaker pole, a moving contact 751 is connected to the supporting member, the jump buckle and the lock catch 742 are rotationally assembled on the supporting member, the jump buckle is in snap connection with one end of the lock catch 742, the lock catch 742 comprises a first cantilever and a second cantilever, a trip hook is arranged on the second cantilever, the first connecting rod and the second connecting rod are respectively arranged on the linkage 741, the linkage 741 is connected with the operating member 71 through the first connecting rod, the linkage 741 is in linkage connection with the supporting member through the second connecting rod, gear teeth are arranged on one side of the linkage 741 facing a wire inlet, the gear teeth are used for being in meshed connection with an output gear of the electric operating module 6, the supporting member is connected with the moving contact 751, the linkage 742 of all circuit breaker poles are in linkage connection with the adjacent two circuit breaker poles through a linkage 743.
As shown in fig. 7 and 8, the overload protection mechanism 76 is disposed on one side of the operating mechanism 74, preferably, the overload protection mechanism 76 and the fixed contact 752 are located on the same side of the L-phase housing 21, and the overload protection mechanism 76 includes a bimetal, a movable end of the bimetal is opposite to the trip hook of the latch 742, and when an overload fault occurs, the bimetal is bent by heating and cooperates with the trip hook to trip the operating mechanism 74.
In at least one L-phase pole 2, as shown in fig. 8, a tripping device 4 is arranged, in parallel with an arc extinguishing chamber 72 in the L-phase pole 2, between a contact mechanism and a current transformer 73, preferably the tripping device 4 and an overload protection mechanism 76 are located at two sides of an operating mechanism 74, wherein the tripping device 4 comprises a short-circuit protection element, the short-circuit protection element comprises a coil 41 and a movable iron core driven by the coil 41, one end of the movable iron core is opposite to a first cantilever of a lock catch 742, the coil 41 is connected with an outlet terminal 772 through a flexible connection, the current transformer 73 is connected on the flexible connection in a penetrating way, and the current transformer 73 transmits collected current signals to a control circuit board. Of course, when the tripping device 4 is not provided in the L-phase pole 2, the outlet terminal 772 is electrically connected to the movable contact 751 via a flexible connection, and the current transformer 73 is likewise connected to the flexible connection in a penetrating manner for detecting current signals.
As shown in fig. 6 and 7, a chamber a for assembling the lightning protection module 5 is reserved in the middle of the L-phase housing 21, the chamber a is located between the current transformer 73 and the outlet terminal 772, the opening of the chamber a faces to the outside of the L-phase housing 21, the chamber openings of the adjacent L-phase poles 2 are arranged side by side, and the openings of all the chambers a can be covered by one cover plate 12.
The first pins of the lightning protection modules 5 are connected with the outlet terminal 772 of the L-phase pole 2, the second pins are connected with the outlet terminal 772 of the N-phase pole 3, and preferably, a circuit board 51 is arranged on one side of the lightning protection modules 5, the circuit board 51 penetrates through one side of all the lightning protection modules 5 along the inner side of the cover plate 12, the first pins and the second pins of the lightning protection modules 5 are respectively connected with the circuit board 51, the lightning protection modules 5 of two adjacent L-phase poles 2 are connected in parallel through the circuit board 51, when one tripping device 4 is arranged in all the L-phase poles 2, each tripping device 4 is respectively connected with the circuit board 51 so as to be connected with the lightning protection module 5 of each L-phase pole 2, and when only one tripping device 4 is arranged in one L-phase pole 2, the first pins of all the micro switches 52 in the lightning protection modules 5 are connected on the first pins of the tripping device 4 after being connected in parallel through the circuit board 51, and the second pins of the tripping device 4 are directly connected on the circuit board 51.
In this embodiment, the wire outlet terminal 772 includes a bus bar clamp 772 and a connecting plate 772, the bus bar clamp 772 is welded to one end of the connecting plate 772, the bus bar clamp 772 is disposed in the wire outlet, the bus bar clamp 772 can be connected with external wires through plug connection, the connecting plate 772 is disposed along the inner side of the L-phase housing 21 and is connected with the moving contact 751 through soft connection, preferably the other end of the connecting plate 772 is disposed along one side of the lightning protection module 5 and is bent towards one end parallel to the lightning protection module 5, in fig. 7, the connecting plate 7722 is disposed along the right side of the lightning protection module 5, and then is bent and extended between the arc extinguishing chamber 72 and the lightning protection module 5 parallel to one end of the lightning protection module 5 facing the arc extinguishing chamber 72, of course, the other end of the connecting plate 7722 can also be disposed at one end of the lightning protection module 5 far from the arc extinguishing chamber 72 and parallel to the end.
The N-phase pole 3 is a breaker pole on the most side, the N-phase pole 3 comprises an N-phase shell 31 formed by surrounding an upper cover and a base, the N-phase pole 3 is spliced on one side of the L-phase pole 2 on the most side through the N-phase shell 31, two ends of the N-phase shell 31 are respectively provided with a wire inlet and a wire outlet, one side of the wire inlet is provided with an operation piece hole, an operation piece 71 identical to the L-phase pole 2 is assembled in the operation piece hole, the operation piece 71 of the N-phase pole 3 is connected with the operation piece 71 of the adjacent L-phase pole 2 in a linkage manner, the operation piece 74 is arranged between the wire inlet and the wire outlet, a contact mechanism, an arc extinguishing chamber 72 and a lightning protection module 5 are arranged between the operation piece 74 and the middle part of the contact mechanism, the arc extinguishing chamber 72 is arranged between a wire outlet terminal 772 and the contact mechanism, the operation piece is not provided with an operation piece hole 71 identical to the L-phase pole 2, the operation piece 71 is not provided with a current protection device 73 and the lightning protection device 72, and the lightning protection module 72 is arranged between the wire outlet terminal 772 and the first pin 772 and the lightning protection module 772 and the second pin 771 are respectively arranged between the wire inlet and the lightning protection module 772 and the first pin 775. In addition, the movable contact 751 may be formed by stacking two or more movable contacts 751 to increase the current-carrying capacity.
In addition, the one end of the incoming line terminal 771 that sets up at the N looks utmost point 3 is equipped with the stationary contact and extends to one side of operating device 74 as stationary contact 752 and movable contact 751 cooperation along the inboard of N looks shell 31, and the outgoing line terminal 772 that sets up at the N looks utmost point 3 also includes bus-bar clamp 7721 and connecting plate 7722, bus-bar clamp 7721 sets up in the outlet, bus-bar clamp 7721 is connected with outside PE line, and connecting plate 7722 welds with the one end of bus-bar clamp 7721, and connecting plate 7722 sets up along the one side of laminating lightning protection module 5, and in fig. 9, connecting plate 7722 laminating lightning protection module 5's upper surface sets up, and the other end of connecting plate 7722 sets up along the one end parallel arrangement of lightning protection module 5 and is connected with movable contact 751 through the flexible coupling. Furthermore, a socket structure can be further arranged at one side of the wire outlet, and a conductive structure connected with the bus clamp 7721 in parallel is additionally arranged in the socket structure for increasing current-carrying capacity.
In addition, a trip device 4 similar to the L-phase pole 2 may be disposed in the N-phase pole 3, where the trip device 4 is disposed in parallel with the arc extinguishing chamber 72, one end of the trip device 4 faces the latch 742 of the operating mechanism 74, and the lightning protection module 5 of the N-phase pole 3 is connected to the trip device 4 of the N-phase pole 3.
As shown in fig. 2, a chamber a for assembling the lightning protection modules 5 is reserved in the N-phase housing 31, the opening of the chamber a is parallel to the opening of the chamber of the L-phase housing 21, and the chamber a of the N-phase pole 3 and the chambers a of all the L-phase poles 2 together form the mounting groove 11, so that all the lightning protection modules 5 can be firstly parallel arranged on the circuit board 51 and then assembled into each circuit breaker pole together, and the assembling and wiring processes are simplified.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110740235.4A CN115547772B (en) | 2021-06-30 | 2021-06-30 | A circuit breaker |
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| CN202110740235.4A CN115547772B (en) | 2021-06-30 | 2021-06-30 | A circuit breaker |
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| CN115547772B true CN115547772B (en) | 2026-02-10 |
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| CN103855699A (en) * | 2012-12-06 | 2014-06-11 | 孙巍巍 | Novel surge protection device |
| CN107809103A (en) * | 2016-09-08 | 2018-03-16 | 浙江正泰电器股份有限公司 | Lighning proof type residual current action breaker |
| CN215869238U (en) * | 2021-06-30 | 2022-02-18 | 浙江正泰电器股份有限公司 | Circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3031233B1 (en) * | 2014-12-30 | 2017-01-27 | Legrand France | REINFORCED SAFETY MODULAR APPARATUS AND SELF-PROTECTED ELECTRICAL ASSEMBLY COMPRISING SUCH A MODULAR APPARATUS ASSEMBLING A CIRCUIT BREAKER |
| CN105931924B (en) * | 2016-06-28 | 2018-01-26 | 北京人民电器厂有限公司 | Small-sized DC circuit breaker |
| CN206908287U (en) * | 2017-06-09 | 2018-01-19 | 深圳科安达电子科技股份有限公司 | A kind of safety-type lightning-protection module |
| CN110265198A (en) * | 2019-07-18 | 2019-09-20 | 固力发电气有限公司 | A signal remote-transmission lightning arrester without triggering and a remote monitoring method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855699A (en) * | 2012-12-06 | 2014-06-11 | 孙巍巍 | Novel surge protection device |
| CN107809103A (en) * | 2016-09-08 | 2018-03-16 | 浙江正泰电器股份有限公司 | Lighning proof type residual current action breaker |
| CN215869238U (en) * | 2021-06-30 | 2022-02-18 | 浙江正泰电器股份有限公司 | Circuit breaker |
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