CN214012711U - Double-core mutual inductor for low-voltage circuit breaker detection and circuit breaker - Google Patents
Double-core mutual inductor for low-voltage circuit breaker detection and circuit breaker Download PDFInfo
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- CN214012711U CN214012711U CN202022720784.9U CN202022720784U CN214012711U CN 214012711 U CN214012711 U CN 214012711U CN 202022720784 U CN202022720784 U CN 202022720784U CN 214012711 U CN214012711 U CN 214012711U
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Abstract
The utility model provides a low voltage circuit breaker detects uses two-core mutual-inductor and this circuit breaker which characterized in that: the leakage protection device comprises a leakage protection action mutual inductor (1) and a leakage detection mutual inductor (2), wherein the leakage protection action mutual inductor (1) and the leakage detection mutual inductor (2) are concentrically arranged, the leakage protection action mutual inductor (1) is positioned at an inner ring, and the leakage detection mutual inductor (2) is positioned at an outer ring; the lead (3) passes through the leakage protection action mutual inductor (1) at the inner ring for detecting the leakage action. The mutual inductor appearance is double-core circular mutual inductor for the earth leakage protection function is located the inner circle, is used for the real-time detection electric leakage function to be located the outer lane, to the function of earth leakage protection and detection real-time electric leakage, only accomplishes with a mutual inductor, need not to increase a plurality of mutual inductors and zero sequence transformer. Meanwhile, a lead penetrates through the mutual inductor and is used for detecting the action of electric leakage, so that the safety of the electric leakage detection device is improved.
Description
Technical Field
The utility model belongs to the technical field of the circuit breaker, specifically say so and relate to a low voltage circuit breaker detects uses two-core mutual-inductor and this circuit breaker.
Background
The residual current circuit breaker (hereinafter referred to as circuit breaker) is mainly suitable for the distribution network with 50Hz of alternating current, 400V of rated voltage and 800A of rated current, is used for providing indirect contact protection for people, can also be used for preventing fire hazard caused by ground fault current generated by insulation damage of equipment, can be used for distributing electric energy and protecting overload and short circuit of circuits and power supply equipment, and can also be used for infrequent switching of the circuits and infrequent starting of the motor. The mutual inductor is used as a detection element of the residual current circuit breaker and is used for detecting whether the residual current reaches a set threshold value or not so as to achieve the purpose of protecting the safety of human bodies. The traditional leakage circuit breaker cannot detect leakage value in real time before tripping action, and a mutual inductor is generally welded by a lead or a contact pin, so that the traditional leakage circuit breaker is bad and inconvenient to maintain.
Chinese patent ZL201821338431.9 a zero sequence current transformer, including plastic housing, twine the iron core of insulating band and coil, shielding component and wire, the line end of wire links to each other with the line head of coil, the plastic housing lateral part has outside convex wiring portion, wiring portion top shaping has a plurality of wire slots, be formed with the step in wiring portion inboard, the shaping has the plug wire hole that sets up with each wire slot one-to-one on the step, each inboard shaping in plug wire hole has the slot, the bottom in slot is higher than the bottom in plug wire hole, the wire penetrates plastic housing by crossing the wire slot, the line end of wire inserts plug wire hole bottom, the line head of coil stretches into the plug wire hole through the slot, with the line end of wire links to each other. The utility model restrains the wire end of the wire, and avoids the short circuit caused by the contact of the wire end of the wire and the shielding component; the zero sequence current transformer is convenient and reliable to fix and install in the shell of the circuit breaker, and has a good using effect. However, the structure of single-core double windings is only a zero sequence transformer, when the leakage current on the primary side passes, the secondary side is only an induction current, and the detection precision is not high.
Contents of utility model
The utility model aims at the above-mentioned current zero sequence transformer, single core double winding's structure is when once side leakage current through the time, the secondary side only is an induced-current, detect the not high technical defect of precision, a low voltage circuit breaker detects and uses double-core mutual-inductor is provided, the mutual-inductor appearance is double-core circular mutual-inductor, be used for the earth leakage protection function to be located the inner circle, be used for the real-time detection earth leakage function to be located the outer lane, to earth leakage protection and the function that detects real-time leakage, only accomplish with a mutual-inductor, need not to increase a plurality of mutual-inductors and zero sequence transformer. Meanwhile, a lead penetrates through the mutual inductor and is used for detecting the action of electric leakage, so that the safety of the electric leakage detection device is improved.
Technical scheme
In order to realize above-mentioned technical purpose, the utility model provides a pair of low voltage circuit breaker detects uses two-core mutual-inductor, its characterized in that: the leakage protection device comprises a leakage protection action mutual inductor and a leakage detection mutual inductor, wherein the leakage protection action mutual inductor and the leakage detection mutual inductor are concentrically arranged;
the wires pass through the earth leakage protection action transformer and the earth leakage detection transformer.
Further, the earth leakage protection action mutual inductor is positioned at the inner ring, and the earth leakage detection mutual inductor is positioned at the outer ring.
Further, the earth leakage protection action transformer and/or the earth leakage detection transformer are circular transformers.
Furthermore, the leakage protection action mutual inductor is connected with a leakage signal wire, and two ends of the leakage signal wire are fixedly connected to the first terminal, so that the first terminal is connected with the outside in a plugging mode.
Furthermore, the leakage detection mutual inductor is connected with a test signal wire, and two ends of the test signal wire are fixedly connected to a second terminal, so that the second terminal is connected with the outside in a plugging mode.
Further, the leakage protection action transformer and/or the leakage detection transformer are zero sequence transformers.
The utility model also provides a circuit breaker, its characterized in that: the transformer comprises the transformer and a circuit board 8, wherein the transformer is connected with the circuit board.
Furthermore, the mutual inductor is connected with the circuit board in a pluggable mode through the first terminal and the second terminal.
Further, the mutual inductor is located at a wire outlet end of the circuit breaker.
Advantageous effects
The utility model provides a low voltage circuit breaker detects uses two-core mutual-inductor and this circuit breaker, the mutual-inductor inner core adopts two-core structure, and the mutual-inductor increases wire and the terminal of passing the mutual-inductor. Under the condition that the size of the original zero sequence transformer is equal to that of the space, a coil for detecting the electric leakage in real time and a test loop coil are added. The mutual inductor appearance is double-core circular mutual inductor for the earth leakage protection function is located the inner circle, is used for the real-time detection electric leakage function to be located the outer lane, to the function of earth leakage protection and detection real-time electric leakage, only accomplishes with a mutual inductor, need not to increase a plurality of mutual inductors and zero sequence transformer. Meanwhile, a lead penetrates through the mutual inductor and is used for detecting the action of electric leakage, so that the safety of the electric leakage detection device is improved.
Drawings
FIG. 1 is a product diagram of an embodiment of the present invention;
fig. 2 is a front view of an embodiment of the present invention;
fig. 3 is a right side view of an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an embodiment of the present invention;
fig. 5 is a schematic view of an installation structure of a mutual inductor in the embodiment of the present invention;
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
As shown in attached figures 1-4, the double-core mutual inductor for detecting the low-voltage circuit breaker comprises a leakage protection action mutual inductor 1 and a leakage detection mutual inductor 2, so that the leakage protection and leakage detection functions are realized simultaneously, and the leakage protection action mutual inductor 1 and/or the leakage detection mutual inductor 2 are zero-sequence mutual inductors. The lead wire 3 passes through the earth leakage protection operation transformer 1 and the earth leakage detection transformer 2. In this embodiment, the leakage protection action transformer 1 and the leakage detection transformer 2 are zero sequence transformers. The leakage protection action mutual inductor 1 and the leakage detection mutual inductor 2 are concentrically arranged to realize the purposes of two mutual inductors only by using the space of one mutual inductor, and the processing difficulty is reduced. In this embodiment, it is preferable that the leakage protection operation transformer 1 is located at an inner ring, the leakage detection transformer 2 is located at an outer ring, and the accuracy requirement of the inner ring is relatively coarse, so as to complete a leakage protection function; the outer ring has higher precision, and the function of detecting the leakage value in real time is completed.
The leakage protection action mutual inductor 1 and/or the leakage detection mutual inductor 2 are circular mutual inductors. Specifically, in this embodiment, the leakage protection operation transformer 1 and the leakage detection transformer 2 are circular transformers. The leakage protection action mutual inductor 1 is connected with a leakage signal wire 4, and two ends of the leakage signal wire 4 are fixedly connected to a first terminal 5, so that the first terminal 5 is utilized to be connected with the outside in a plugging mode. The leakage detection mutual inductor 2 is connected with a test signal wire 6, and two ends of the test signal wire 6 are fixedly connected to a second terminal 7, so that the second terminal 7 is used for being connected with the outside in a plugging mode. The whole structure is connected with the outside in a plugging mode, so that the assembly, the production and the maintenance are convenient. The leakage signal line 4 and the test signal line 6 are flexible wires.
As shown in fig. 5, the present embodiment further provides a circuit breaker, which includes the transformer and further includes a circuit board 8, wherein the transformer is connected to the circuit board 8. The mutual inductor is connected with the circuit board 8 in a pluggable mode through the first terminal 5 and the second terminal 7. The mutual inductor is positioned at the wire outlet end of the circuit breaker. And two ends of the wire 3 are fixedly connected to the second terminal 7, so that pluggable connection between the second terminal 7 and the outside is realized.
The embodiment of the utility model provides a low voltage circuit breaker detects uses two-core mutual-inductor and this circuit breaker, the mutual-inductor inner core adopts two-core structure, and the mutual-inductor increases wire and the terminal of passing the mutual-inductor. Under the condition that the size of the original zero sequence transformer is equal to that of the space, a coil for detecting the electric leakage in real time and a test loop coil are added. The mutual inductor appearance is double-core circular mutual inductor for the earth leakage protection function is located the inner circle, is used for the real-time detection electric leakage function to be located the outer lane, to the function of earth leakage protection and detection real-time electric leakage, only accomplishes with a mutual inductor, need not to increase a plurality of mutual inductors and zero sequence transformer. Meanwhile, a lead penetrates through the mutual inductor and is used for detecting the action of electric leakage, so that the safety of the electric leakage detection device is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. The utility model provides a low voltage circuit breaker detects uses two core mutual-inductors which characterized in that: the leakage protection device comprises a leakage protection action mutual inductor (1) and a leakage detection mutual inductor (2), wherein the leakage protection action mutual inductor (1) and the leakage detection mutual inductor (2) are concentrically arranged;
the lead (3) passes through the earth leakage protection action mutual inductor (1) and the earth leakage detection mutual inductor (2).
2. The double-core transformer for detecting the low-voltage circuit breaker according to claim 1, characterized in that: the leakage protection action mutual inductor (1) is positioned at the inner ring, and the leakage detection mutual inductor (2) is positioned at the outer ring.
3. The double-core transformer for detecting the low-voltage circuit breaker according to claim 1, characterized in that: the leakage protection action mutual inductor (1) and/or the leakage detection mutual inductor (2) are circular mutual inductors.
4. The double-core transformer for detecting the low-voltage circuit breaker according to claim 1, characterized in that: the earth leakage protection action mutual inductor (1) is connected with an earth leakage signal wire (4), and two ends of the earth leakage signal wire (4) are fixedly connected to a first terminal (5), so that the first terminal (5) is utilized to be connected with the outside in a plugging mode.
5. The double-core transformer for detecting the low-voltage circuit breaker according to claim 1, characterized in that: the leakage detection mutual inductor (2) is connected with the test signal line (6), and two ends of the test signal line (6) are fixedly connected to the second terminal (7), so that the second terminal (7) is connected with the outside in a plugging mode.
6. The double-core transformer for detecting the low-voltage circuit breaker according to claim 1, characterized in that: the leakage protection action mutual inductor (1) and/or the leakage detection mutual inductor (2) are zero sequence mutual inductors.
7. A circuit breaker, characterized by: the mutual inductor according to any one of the preceding claims 1 to 6, further comprising a circuit board (8), wherein the mutual inductor is connected with the circuit board (8).
8. The circuit breaker of claim 7, wherein: the mutual inductor is connected with the circuit board (8) in a pluggable mode through the first terminal (5) and the second terminal (7).
9. The circuit breaker of claim 7, wherein: the mutual inductor is positioned at the wire outlet end of the circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022720784.9U CN214012711U (en) | 2020-11-20 | 2020-11-20 | Double-core mutual inductor for low-voltage circuit breaker detection and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022720784.9U CN214012711U (en) | 2020-11-20 | 2020-11-20 | Double-core mutual inductor for low-voltage circuit breaker detection and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214012711U true CN214012711U (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022720784.9U Active CN214012711U (en) | 2020-11-20 | 2020-11-20 | Double-core mutual inductor for low-voltage circuit breaker detection and circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214012711U (en) |
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