CN214477271U - Residual current circuit breaker - Google Patents
Residual current circuit breaker Download PDFInfo
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- CN214477271U CN214477271U CN202023227586.5U CN202023227586U CN214477271U CN 214477271 U CN214477271 U CN 214477271U CN 202023227586 U CN202023227586 U CN 202023227586U CN 214477271 U CN214477271 U CN 214477271U
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Abstract
The utility model provides an electric leakage circuit breaker, includes control pole and an at least looks utmost point, the control pole includes the main control unit, the main control unit can drive the action mechanism action that sets up in control pole and/or looks utmost point, the both ends of looks utmost point are regarded as inlet wire end and leading-out terminal respectively to be provided with a binding post respectively at inlet wire end and leading-out terminal the inlet wire end and the leading-out terminal of looks utmost point set up a temperature measurement circuit board respectively be provided with temperature measurement element and control element on the temperature measurement circuit board, temperature measurement element is used for gathering binding post's temperature signal and transmits temperature signal to control element, control element is connected with the main control unit and carries out signal transmission. The utility model discloses a residual current circuit breaker, through setting up the temperature measurement circuit board at inlet wire end, leading-out terminal, can acquire binding post's temperature information, can not change the inside structure of circuit breaker through addding the temperature measurement circuit board, convenient assembling just can not increase the volume of circuit breaker.
Description
Technical Field
The utility model relates to a low-voltage apparatus, concretely relates to leakage circuit breaker.
Background
A low-voltage circuit breaker, also called an automatic air switch or an automatic air circuit breaker, can switch on and off load power of electrical equipment in normal operation, and can reliably cut off fault current when a system fails. When the circuit breaker operates, a main circuit of the circuit breaker usually generates heat, particularly, the temperature of a connection part between a wiring board and an external lead often rises rapidly due to various reasons, and the abnormal heat can seriously affect the service life of the circuit breaker and even cause the reduction of the insulation grade or the instability of the mechanical performance. The temperature sensor is not arranged in some existing low-voltage circuit breakers, the temperature rise condition of the circuit breaker cannot be accurately obtained, or the temperature measuring module is additionally arranged outside the circuit breaker, and the structure is complex in assembly and can cause the circuit breaker to be too large in size.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a simple structure, can measure the earth leakage circuit breaker of wiring end temperature.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an electric leakage circuit breaker, includes control pole and an at least looks utmost point, the control pole includes the main control unit, the main control unit can drive the action mechanism action that sets up in control pole and/or looks utmost point, the both ends of looks utmost point are regarded as inlet wire end and leading-out terminal respectively to be provided with a binding post respectively at inlet wire end and leading-out terminal the inlet wire end and the leading-out terminal of looks utmost point set up a temperature measurement circuit board respectively be provided with temperature measurement element and control element on the temperature measurement circuit board, temperature measurement element is used for gathering binding post's temperature signal and transmits temperature signal to control element, control element is connected with the main control unit and carries out signal transmission.
Further, the control element transmits the temperature signal acquired by the temperature measuring element to the main control unit, and the main control unit judges and compares the temperature signal and drives the action mechanism;
or the control element processes the signals collected by the temperature measuring element and then feeds the processed signals back to the main control unit, and the main control unit drives the action mechanism according to the feedback information.
Furthermore, the number of the phase poles is two or more, the wire inlet end and/or the wire outlet end of each phase pole is provided with an installation through hole capable of communicating two adjacent phase poles, a temperature measurement circuit board is assembled in the installation through holes, and the temperature measurement circuit board is provided with a plurality of temperature measurement elements for collecting temperature information of the two or more phase poles.
Further, the device comprises at least two phase poles, wherein one phase pole is an N phase pole, and the rest are L phase poles; the N-phase pole and the L-phase pole are provided with an installation through hole at the wire inlet ends, the installation through hole is assembled with a first temperature measurement circuit board, the first temperature measurement circuit board is provided with a plurality of temperature measurement elements, and the temperature measurement elements are respectively used for collecting the temperature of the wiring terminals at the wire inlet ends of the L-phase pole and the N-phase pole; and a second temperature measuring circuit board is arranged at the outlet end of the N-phase pole, a plurality of temperature measuring elements are arranged on the second temperature measuring circuit board, and the temperature measuring elements are used for collecting the temperature of the wiring terminals of the L-phase pole outlet end and the N-phase pole outlet end.
Furthermore, a bimetallic assembly for overload protection is arranged in the L-phase pole, and a current transformer is arranged in the N-phase pole and connected with the main control unit for overload protection.
Further, the actuating mechanism arranged in the L-phase pole comprises an L-phase handle, an L-phase operating mechanism, an L-phase contact mechanism, an instantaneous tripping mechanism and a bimetallic assembly, the L-phase handle is arranged on the upper portion of the L-phase pole and is in linkage connection with the L-phase operating mechanism, a moving contact of the L-phase contact mechanism is rotatably assembled on the L-phase operating mechanism, a static contact of the L-phase contact mechanism is fixedly arranged in the middle of the L-phase pole, the instantaneous tripping mechanism is arranged on the lower portion of the L-phase handle and is located on one side of the L-phase operating mechanism, the bimetallic assembly is arranged between the moving contact of the L-phase contact mechanism and a wire outlet end of the L-phase pole, one end of the bimetallic assembly is fixed on the lower portion of the L-phase pole, and the other end of the bimetallic assembly serving as a movable end can be matched with a tripping rod of the L-phase operating mechanism.
Furthermore, two ends of the L-phase pole are respectively provided with an incoming terminal and an outgoing terminal, the incoming terminal of the L-phase pole comprises a first wiring board and a first wiring screw, the first wiring board is U-shaped, one end of the first wiring board extends into a screw frame of the first wiring screw, and the other end of the first wiring board is positioned below the screw frame; the L-phase pole outgoing terminal comprises a second wiring board and a second wiring screw, one end of the second wiring board extends into a screw frame of the second wiring screw, and the other end of the second wiring board bends and extends in a direction far away from the outgoing terminal; an incoming line terminal and an outgoing line terminal are respectively arranged at two ends of the N-phase pole, the incoming line terminal of the N-phase pole has the same structure as the incoming line terminal of the L-phase pole, the incoming line terminal of the N-phase pole comprises a U-shaped third wiring board and a third wiring screw, the outgoing line terminal of the N-phase pole comprises a fourth wiring board and a fourth wiring screw, one end of the fourth wiring board extends into a screw frame of the fourth wiring screw, and the other end of the fourth wiring board is bent along the side of the screw frame of the fourth wiring screw; a first temperature measuring circuit board is arranged below the incoming line terminal of the N-phase pole, an installation through hole is arranged below the first wiring board and the third wiring board, and a fixing structure for fixing the first temperature measuring circuit board can be arranged in the installation through hole; and a second temperature measuring circuit board is arranged on one side of the outlet terminal of the N-phase pole, is fixed in the N-phase pole and is parallel and opposite to one end of the fourth wiring board, and a bulge structure for fixing the second temperature measuring circuit board is arranged on one side of the outlet terminal of the N-phase pole.
Furthermore, an indicating device is arranged outside the phase pole, and the indicating device is controlled by the main control unit and is used for indicating the position of the wiring terminal with increased temperature or abnormal temperature.
Furthermore, the indicating device comprises a plurality of light emitting diodes controlled by the main control unit, the light emitting diodes are assembled in the control electrode, a plurality of indicating windows corresponding to the light emitting diodes are arranged on the control electrode, and each light emitting diode corresponds to one wiring terminal.
Further, the wiring terminal comprises a wiring board, and the temperature measuring element is in contact with the wiring board to obtain the temperature of the wiring terminal; the wiring terminal comprises a wiring board, the temperature measuring element obtains the temperature of the wiring terminal from the wiring board in a non-contact mode, and an insulating plate is arranged between the temperature measuring element and the wiring board.
The utility model discloses a leakage circuit breaker, through setting up the temperature measurement circuit board at inlet wire end, leading-out terminal, can acquire binding post's temperature information in order in time to obtain the circuit breaker temperature rise condition, in addition, can not change the inside structure of circuit breaker through addding the temperature measurement circuit board, convenient assembling just can not increase the volume of circuit breaker.
In addition, the temperature measurement circuit board is assembled in the mounting through hole which can be communicated with two adjacent poles, so that the multi-pole circuit breaker can share one temperature measurement circuit board, the assembly steps are simplified, and the cost is reduced.
In addition, when the circuit breaker is provided with an N-phase pole and at least one L-phase pole, the current transformer of the N-phase pole and the bimetallic component in the L-phase pole are adopted as overload protection mechanisms, so that the circuit breaker is provided with a double overload protection mechanism.
In addition, through setting up indicating device, accurate temperature rise or the unusual binding post of temperature of instructing does benefit to in time the trouble of discovering the circuit breaker.
Drawings
Fig. 1 is a schematic structural diagram of a residual current circuit breaker (including a light emitting diode) according to the present invention;
fig. 2 is a schematic structural diagram (including a display screen) of the residual current circuit breaker of the present invention;
fig. 3 is a schematic diagram illustrating temperature measurement of the residual current circuit breaker of the present invention;
fig. 4 is a schematic structural diagram of an L-phase pole in the residual current circuit breaker of the present invention;
fig. 5 is a schematic structural diagram of an N-phase pole in the residual current circuit breaker (including a zero sequence transformer);
fig. 6 is a schematic structural diagram of an N-phase pole in the residual current circuit breaker of the present invention;
fig. 7 is a schematic structural view of an N-phase pole in the residual current circuit breaker of the present invention;
fig. 8 is a schematic structural view of a first temperature measurement circuit board of an N-phase pole in the residual current circuit breaker of the present invention;
fig. 9 is a schematic structural diagram of a second temperature measurement circuit board of an N-phase pole in the residual current circuit breaker.
Detailed Description
The following describes a specific embodiment of the residual current circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 9. The present invention is not limited to the description of the following embodiments.
The utility model provides an electric leakage circuit breaker, includes control pole 3 and an at least looks utmost point, control pole 3 includes the main control unit, the main control unit can drive the action mechanism action of setting in control pole 3 and/or looks utmost point, the both ends of looks utmost point are regarded as inlet wire end and leading-out terminal respectively to be provided with a binding post respectively at inlet wire end and leading-out terminal the inlet wire end and the leading-out terminal of looks utmost point set up a temperature measurement circuit board respectively be provided with temperature measurement element 6 and control element on the temperature measurement circuit board, temperature measurement element 6 is used for gathering binding post's temperature information and transmits to control element with temperature signal, control element is connected with the main control unit and carries out signal transmission.
The utility model discloses a leakage circuit breaker, through setting up the temperature measurement circuit board at inlet wire end, leading-out terminal, can acquire binding post's temperature information in order in time to obtain the circuit breaker temperature rise condition, in addition, can not change the inside structure of circuit breaker through addding the temperature measurement circuit board, convenient assembling just can not increase the volume of circuit breaker.
An embodiment of an earth leakage breaker comprising a control pole 3 and one or more phase poles, preferably one of the phases being an N-phase pole 2 and the remaining phase being an L-phase pole 1, is presented in detail in connection with fig. 1-9. The control electrode 3 is provided with a main control unit, preferably the main control unit is a microcontroller, which is marked as MCU in fig. 3, the main control unit analyzes and judges according to the received signal and outputs a control signal to drive the action mechanism provided in the control electrode 3 and/or the phase electrode to act, the action mechanism provided in the phase electrode generally includes a handle, an operating mechanism, an instantaneous trip mechanism 13, an electric leakage trip 25, a bimetal assembly 14, etc., and the action mechanisms can cooperate with each other to perform opening or closing action under the driving of the main control unit.
One end of each phase pole is used as a wire inlet end, the other end of each phase pole is used as a wire outlet end, a wiring terminal is arranged at the wire inlet end and used as a wire inlet terminal, a wiring terminal used as a wire outlet terminal is arranged at the wire outlet end, two temperature measuring circuit boards are arranged inside the phase poles, one temperature measuring circuit board is correspondingly arranged at the wire inlet end and used for measuring the temperature of the wire inlet end, and the other temperature measuring circuit board is arranged at the wire outlet end and used for measuring the temperature of the wire outlet end. The temperature measuring circuit board is provided with a temperature measuring element 6 and a control element, the temperature measuring element 6 obtains the temperature of the wiring terminal through contact with the wiring terminal or in a non-contact mode, the temperature measuring element 6 transmits the obtained temperature information to the control element in a signal transmission mode, the control element directly transmits the obtained temperature signal to the main control unit, the main control unit processes and judges the temperature signal and drives the action mechanism, or the control element processes the obtained temperature signal, the control unit feeds back the processed information to the main control unit, the main control unit drives the action mechanism according to the feedback information, preferably, the control element arranged on the temperature measuring circuit board is also a microcontroller, and the temperature measuring circuit board is preferably connected with the main control unit through a lead. In addition, other elements for collecting information can be arranged on the temperature measuring circuit board and used for collecting information such as current, voltage, current signals of a wire inlet end and a wire outlet end and the like.
Furthermore, when the number of the phase poles is multiple, namely at least one L-phase pole 1 and one N-phase pole 2 are included, a mounting through hole is arranged at the wire inlet end, the wire outlet end or the wire inlet end and the wire outlet end of each phase pole, the mounting through hole can communicate two adjacent phase poles, a temperature measuring circuit board is arranged in the mounting through hole, so that the multiple phase poles can share one temperature measuring circuit board, a plurality of temperature measuring elements 6 are arranged on the temperature measuring circuit board, the temperature measuring elements 6 respectively correspond to the wire inlet terminals or the wire outlet terminals in the multiple phase poles, preferably, the temperature measuring elements 6 are temperature sensors, the temperature measuring elements 6 can directly contact with the wiring board of the wiring terminals to obtain the temperature, or the temperature measuring elements 6 obtain the temperature from the wiring board of the wiring terminals in a non-contact mode, when the temperature measuring elements 6 are matched with the wiring board in a non-contact mode, an insulating plate 7 may be provided between the temperature measuring element 6 and the terminal block.
Preferably, an indicating device is arranged outside the phase electrode, the indicating device is connected with the main control unit of the control electrode 3, and when the main control unit judges the temperature rise or temperature abnormality of the wiring terminal through the acquired feedback information or the processed signal, the main control unit controls the indicating device to work and is used for indicating the position of the wiring terminal with the temperature rise or temperature abnormality.
An optional indicating device is provided with reference to fig. 1, the indicating device includes a plurality of light emitting diodes 31 controlled by a main control unit, each light emitting diode 31 corresponds to one connection terminal, the light emitting diodes 31 are assembled in the control electrode 3, a plurality of indicating windows corresponding to the light emitting diodes 31 are provided on the control electrode 3, of course, the indicating device may also be assembled at the incoming line end or the appearance end of the phase electrode, when the temperature of the connection terminal corresponding to the light emitting diode 31 is increased or abnormal, preferably, the main control unit controls the light emitting diodes 31 to display different colors to give a prompt, for example, when the temperature of the connection terminal is normal, the light emitting diodes 31 display green, and when the temperature of the connection terminal is increased or abnormal, the light emitting diodes 31 display red.
An alternative indicating device is provided in connection with fig. 2, said indicating device being suitable for a multiple pole residual current circuit breaker. The indicating device comprises a display screen 32 arranged outside the control electrode 3 or the phase electrode, the display screen 32 is arranged outside the control electrode 3 in fig. 2, the display screen 32 is controlled by the main control unit, the position of a wiring terminal with increased temperature or abnormal temperature is directly displayed on the display screen 32, and the display screen 32 can adopt a digital tube or a liquid crystal display screen 32.
Describing the L-phase pole 1 of the present embodiment in detail with reference to fig. 4, two ends of the L-phase pole 1 are respectively provided with an incoming terminal and an outgoing terminal, where the incoming terminal includes a first wiring board 11 and a first wiring screw, where the first wiring board 11 is U-shaped, one end of the first wiring board 11 extends into a screw frame of the first wiring screw, and the other end is located below the screw frame; the outlet terminal also comprises a second wiring board 12 and a second wiring screw, and different from the first wiring board 11, the second wiring board 12 is Z-shaped, one end of the second wiring board 12 extends into a screw frame of the second wiring screw, and the other end of the second wiring board 12 bends and extends in a direction far away from the outlet terminal; an action mechanism controlled by a main control unit is arranged between an inlet terminal and an outlet terminal of an L-phase pole 1, the action mechanism arranged in the L-phase pole 1 comprises a handle, an operating mechanism, a contact mechanism, an instantaneous tripping mechanism 13 and a bimetal component 14, the handle is arranged at the upper part of the L-phase pole 1 and is in linkage connection with the operating mechanism, the operating mechanism in the adjacent phase pole is in linkage connection with the handle, a moving contact of the contact mechanism is rotatably assembled on the operating mechanism and is connected with the inlet terminal, a fixed contact of the contact mechanism is fixedly arranged at the middle part of the L-phase pole 1, the instantaneous tripping mechanism 13 is arranged at the lower part of the handle and is positioned at one side of the operating mechanism, the fixed contact and the instantaneous tripping mechanism 13 are connected with the outlet terminal, the bimetal component 14 is arranged between the moving contact and the outlet terminal of the L-phase pole 1, one end of the bimetal component 14 is fixed at the lower part of the L-phase pole 1, the other end of the bimetal component 14 can be matched with a tripping rod of the operating mechanism as a movable end, and when an overload fault occurs, the bimetal component 14 bends to trigger the tripping rod, so that the operating mechanism acts to realize tripping and power off.
The N-phase pole 2 of the present embodiment is described in detail with reference to fig. 3 and 5 to 9, wherein both ends of the N-phase pole 2 are respectively provided with an incoming line terminal and an outgoing line terminal, wherein the incoming line terminal of the N-phase pole 2 has the same structure as the incoming line terminal of the L-phase pole 1, the incoming line terminal of the N-phase pole 2 includes a U-shaped third wiring board 21 and a third wiring screw, the outgoing line terminal of the N-phase pole 2 includes a fourth wiring board 22 and a fourth wiring screw, the fourth wiring board 22 is L-shaped, one end of the fourth wiring board 22 extends into a screw frame of the fourth wiring screw, and the other end is bent along the screw frame side of the fourth wiring screw.
A temperature measuring circuit board is arranged below the incoming line terminal of the N-phase electrode 2, the temperature measuring circuit board is used as a first temperature measuring circuit board 4 of the embodiment, the first temperature measuring circuit board 4 is used for measuring the temperature of the wiring terminals of the inlet ends of the L-phase pole 1 and the N-phase pole 2, and is preferably provided with a mounting through hole below the first wiring board 11 and the third wiring board 21, a fixing structure for fixing the first temperature measuring circuit board 4 can be arranged in the mounting through hole, for example, a protrusion for limiting the movement of the first temperature measuring circuit board 4, the first temperature measuring circuit board 4 is arranged in the mounting through hole along a direction parallel to the first wiring board 11 and the third wiring board 21, and the two temperature measuring elements 6 arranged on the first temperature measuring circuit board 4 face the first wiring board 11 and the third wiring board 21 and are respectively and correspondingly contacted with the first wiring board 11 and the third wiring board 21. Of course, when the temperature measuring element 6 acquires the temperatures of the first wiring board 11 and the third wiring board 21 in a non-contact manner, it is preferable to provide the insulating board 7 between the first temperature measuring circuit board 4 and the first wiring board 11 and the third wiring board 21; the control element provided on the first temperature measuring circuit board 4 is a microcontroller, marked MUC1 in fig. 3.
In this embodiment, the outlet terminal of the N-phase electrode 2 is not provided with a mounting through hole, only the second temperature measuring circuit board 5 is fixed in the N-phase electrode 2, and is parallel and opposite to one end of the fourth wiring board 22, preferably, one side of the outlet terminal of the N-phase electrode 2 is provided with a plurality of protruding structures for fixing the second temperature measuring circuit board 5, two temperature measuring elements 6 are arranged on the second temperature measuring circuit board 5, one of the temperature measuring elements 6 faces the fourth wiring board 22, and the other temperature measuring element 6 is arranged on the side opposite to the fourth wiring board 22 and is used for measuring the temperature of the outlet terminal of the L-phase electrode 1, preferably, the temperature measuring element 6 for measuring the temperature of the outlet terminal of the L-phase pole 1 is a non-contact temperature sensor 61, or the second wiring board 12 of the L-phase pole 1 is extended into the N-phase pole, so that the temperature measuring element 6 arranged on the second temperature measuring circuit board 5 is in contact with the second wiring board to obtain the temperature; the control element provided on the second temperature measuring circuit board 5 is a microcontroller, marked MUC2 in fig. 3.
An action mechanism, a zero sequence transformer 23 and a current transformer 24 are arranged between an inlet terminal and an outlet terminal of an N-phase pole 2, the action mechanism comprises a handle, an operating mechanism, a contact mechanism and an electric leakage release 25, the handle is arranged at the upper part of the N-phase pole 2, the handle is connected with the operating mechanism in a linkage manner, the operating mechanism is connected with the operating mechanism of an adjacent L-phase pole 1 in a linkage manner, a moving contact of the contact mechanism is rotatably assembled on the operating mechanism, a fixed contact of the contact mechanism is fixedly arranged at the middle part of the N-phase pole 2, the electric leakage release 25 is arranged at the lower part of the handle and positioned at one side of the operating mechanism, the electric leakage release 25 is respectively connected with connecting terminals of the outlet ends of the L-phase pole 1 and the N-phase pole 2 through a first lead 26, the first lead 26 passes through the zero sequence transformer 23 arranged below the electric leakage release 25, and the zero sequence transformer 23 is connected with a main control unit, the current transformer 24 is connected with the main control unit and used for collecting current signals in a circuit of the circuit breaker, and when the main control unit detects overload, the driving action mechanism acts to realize overload protection. It should be noted that the overload protection function of the present embodiment is preferably implemented by the cooperation of the current transformer 24, the main control unit, and the operating mechanism, and the bimetal assembly 14 disposed in the L-phase pole 1 is used as a spare overload protection mechanism, so that the earth leakage breaker has a dual overload protection mechanism.
The control electrode 3 may be provided with an operating mechanism such as a drive gear, a motor, and a drive mechanism that can be interlocked with the operating mechanism in the phase electrode.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (10)
1. The utility model provides an electric leakage circuit breaker, includes control pole (3) and at least one looks utmost point, control pole (3) include the main control unit, the main control unit can drive the action mechanism action that sets up in control pole (3) and/or looks utmost point, the both ends of looks utmost point are regarded as inlet wire end and outlet terminal respectively to be provided with a binding post respectively at inlet wire end and outlet terminal, its characterized in that: the temperature measuring circuit board is arranged at the wire inlet end and the wire outlet end of the phase pole respectively, the temperature measuring element (6) and the control element are arranged on the temperature measuring circuit board, the temperature measuring element (6) is used for collecting temperature signals of the wiring terminal and transmitting the temperature signals to the control element, and the control element is connected with the main control unit and conducts signal transmission.
2. A residual current circuit breaker as claimed in claim 1, characterized in that: the control element transmits the temperature signal obtained by the temperature measuring element (6) to the main control unit, and the main control unit judges and compares the temperature signal and drives the action mechanism;
or the control element processes the signals collected by the temperature measuring element (6) and then feeds the processed signals back to the main control unit, and the main control unit drives the action mechanism according to the feedback information.
3. A residual current circuit breaker as claimed in claim 1, characterized in that: the number of the phase poles is two or more, the wire inlet end and/or the wire outlet end of each phase pole are/is provided with an installation through hole capable of communicating two adjacent phase poles, a temperature measurement circuit board is assembled in the installation through holes, and the temperature measurement circuit board is provided with a plurality of temperature measurement elements (6) used for collecting temperature information of the two or more phase poles.
4. A residual current circuit breaker as claimed in claim 1, characterized in that: comprises at least two phase poles, wherein one phase pole is an N phase pole (2), and the rest is an L phase pole (1); the temperature measuring device is characterized in that a mounting through hole is formed in the wire inlet ends of the N-phase pole (2) and the L-phase pole (1), a first temperature measuring circuit board (4) is assembled in the mounting through hole, a plurality of temperature measuring elements (6) are arranged on the first temperature measuring circuit board (4), and the temperature measuring elements (6) are respectively used for collecting the temperature of wiring terminals of the wire inlet ends of the L-phase pole (1) and the N-phase pole (2); the wire outlet end of the N-phase pole (2) is provided with a second temperature measuring circuit board (5), the second temperature measuring circuit board (5) is provided with a plurality of temperature measuring elements (6), and the temperature measuring elements (6) are used for collecting the temperature of the wiring terminals of the L-phase pole (1) and the N-phase pole (2).
5. A residual current circuit breaker as claimed in claim 4, characterized in that: a bimetallic assembly (14) for overload protection is arranged in the L-phase pole (1), a current transformer (24) is arranged in the N-phase pole (2), and the current transformer (24) is connected with a main control unit and used for overload protection.
6. A residual current circuit breaker as claimed in claim 4, characterized in that: the actuating mechanism arranged in the L-phase pole (1) comprises an L-phase handle, an L-phase operating mechanism, an L-phase contact mechanism, an instantaneous tripping mechanism (13) and a bimetal component (14), the L-phase handle is arranged at the upper part of the L-phase pole (1) and is linked with the L-phase operating mechanism, the moving contact of the L-phase contact mechanism is rotatably assembled on the L-phase operating mechanism, the static contact of the L-phase contact mechanism is fixedly arranged in the middle of the L-phase pole (1), the instantaneous tripping mechanism (13) is arranged at the lower part of the L-phase handle and is positioned at one side of the L-phase operating mechanism, the bimetallic component (14) is arranged between the moving contact of the L-phase contact mechanism and a wire outlet end of the L-phase pole (1), one end of the bimetallic component (14) is fixed at the lower part of the L-phase pole (1), and the other end of the bimetallic component (14) serving as a movable end can be matched with a tripping rod of the L-phase operating mechanism.
7. A residual current circuit breaker as claimed in claim 4, characterized in that: an incoming terminal and an outgoing terminal are respectively arranged at two ends of the L-phase pole (1), the incoming terminal of the L-phase pole (1) comprises a first wiring board (11) and a first wiring screw, the first wiring board (11) is U-shaped, one end of the first wiring board (11) extends into a screw frame of the first wiring screw, and the other end of the first wiring board is positioned below the screw frame; the outgoing line terminal of the L-phase pole (1) comprises a second wiring board (12) and a second wiring screw, one end of the second wiring board (12) extends into a screw frame of the second wiring screw, and the other end of the second wiring board bends and extends in a direction far away from the outgoing line terminal; an incoming line terminal and an outgoing line terminal are respectively arranged at two ends of the N-phase pole (2), the incoming line terminal of the N-phase pole (2) is identical to the incoming line terminal of the L-phase pole (1) in structure, the incoming line terminal of the N-phase pole (2) comprises a U-shaped third wiring board (21) and a third wiring screw, the outgoing line terminal of the N-phase pole (2) comprises a fourth wiring board (22) and a fourth wiring screw, one end of the fourth wiring board (22) extends into a screw frame for wiring the fourth wiring screw, and the other end of the fourth wiring board is bent along the side of the screw frame of the fourth wiring screw;
a first temperature measuring circuit board (4) is arranged below an incoming line terminal of the N-phase pole (2), an installation through hole is arranged below the first wiring board (11) and the third wiring board (21), and a fixing structure for fixing the first temperature measuring circuit board (4) can be arranged in the installation through hole; one side of the outlet terminal of the N-phase pole (2) is provided with a second temperature measuring circuit board (5), the second temperature measuring circuit board (5) is fixed in the N-phase pole (2) and is parallel and opposite to one end of a fourth wiring board (22), and one side of the outlet terminal of the N-phase pole (2) is provided with a protruding structure for fixing the second temperature measuring circuit board (5).
8. A residual current circuit breaker as claimed in claim 1, characterized in that: and an indicating device is arranged outside the phase pole, is controlled by the main control unit and is used for indicating the position of the wiring terminal with increased temperature or abnormal temperature.
9. A residual current circuit breaker as claimed in claim 8, characterized in that: the indicating device comprises a plurality of light emitting diodes (31) controlled by the main control unit, the light emitting diodes (31) are assembled in the control electrode (3), a plurality of indicating windows corresponding to the light emitting diodes (31) are arranged on the control electrode (3), and each light emitting diode (31) corresponds to one wiring terminal.
10. A residual current circuit breaker as claimed in claim 1, characterized in that: the wiring terminal comprises a wiring board, and the temperature measuring element (6) is in contact with the wiring board to obtain the temperature of the wiring terminal; the wiring terminal comprises a wiring board, the temperature measuring element (6) obtains the temperature of the wiring terminal from the wiring board in a non-contact mode, and an insulating plate (7) is arranged between the temperature measuring element (6) and the wiring board.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023227586.5U CN214477271U (en) | 2020-12-28 | 2020-12-28 | Residual current circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023227586.5U CN214477271U (en) | 2020-12-28 | 2020-12-28 | Residual current circuit breaker |
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| CN214477271U true CN214477271U (en) | 2021-10-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114496665A (en) * | 2022-01-05 | 2022-05-13 | 深圳曼顿科技有限公司 | Circuit breaker |
| CN115508698A (en) * | 2022-09-30 | 2022-12-23 | 国网北京市电力公司 | Circuit protection method and device, storage medium and processor |
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2020
- 2020-12-28 CN CN202023227586.5U patent/CN214477271U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114496665A (en) * | 2022-01-05 | 2022-05-13 | 深圳曼顿科技有限公司 | Circuit breaker |
| CN115508698A (en) * | 2022-09-30 | 2022-12-23 | 国网北京市电力公司 | Circuit protection method and device, storage medium and processor |
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