CN220963200U - Plastic case circuit breaker with electronic leakage transformer - Google Patents
Plastic case circuit breaker with electronic leakage transformer Download PDFInfo
- Publication number
- CN220963200U CN220963200U CN202322444893.6U CN202322444893U CN220963200U CN 220963200 U CN220963200 U CN 220963200U CN 202322444893 U CN202322444893 U CN 202322444893U CN 220963200 U CN220963200 U CN 220963200U
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- phase
- conducting bar
- bar
- conductor
- circuit breaker
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- 239000004020 conductor Substances 0.000 claims abstract description 48
- 230000016507 interphase Effects 0.000 claims abstract description 19
- 238000005192 partition Methods 0.000 claims description 17
- 238000005452 bending Methods 0.000 claims description 4
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model relates to a molded case circuit breaker with an electronic leakage transformer, which comprises an A-phase conducting bar, a B-phase conducting bar, a C-phase conducting bar, an N-phase conducting bar, a current transformer and a zero sequence transformer; the phase A conductor, the phase B conductor, the phase C conductor and the phase N conductor respectively pass through corresponding current transformers along the current direction and then pass through the zero sequence transformers together; an interphase insulating part is arranged in the zero sequence transformer, and separates a central channel of the zero sequence transformer into mutually independent phase arrangement channels; each phase conductor passes through the corresponding phase channel. Compared with the prior art, the central channel of the zero sequence transformer is divided into mutually independent phase row channels through the interphase insulating component, and the phase A conducting bar, the phase B conducting bar, the phase C conducting bar and the phase N conducting bar pass through the corresponding phase row channels so as to separate the phase rows to increase the creepage distance, and the risk of interphase breakdown (short circuit) is reduced.
Description
Technical Field
The utility model belongs to the technical field of circuit breakers, and relates to a molded case circuit breaker with an electronic leakage transformer.
Background
The A, B, C, N phase connection row of the leakage plastic shell circuit breaker needs to pass through the zero sequence leakage transformer, so that the distance between the phase rows is very short, and the phase-to-phase short circuit is easily caused.
Disclosure of utility model
The utility model aims to provide a plastic shell circuit breaker with an electronic leakage transformer, which does not need to wind auxiliary parts such as adhesive tapes and the like, and increases the creepage distance between phase rows, thereby reducing the risk of inter-phase short circuit.
The aim of the utility model can be achieved by the following technical scheme:
A circuit breaker comprises an A-phase conducting bar, a B-phase conducting bar, a C-phase conducting bar, an N-phase conducting bar, a current transformer and a zero sequence transformer;
along the current direction, the phase A conducting bar, the phase B conducting bar, the phase C conducting bar and the phase N conducting bar respectively pass through corresponding current transformers and then pass through zero sequence transformers together;
An interphase insulating part is arranged in the zero sequence transformer and divides a central channel of the zero sequence transformer into a plurality of phase-arrangement channels; the phase A conductive bar, the phase B conductive bar, the phase C conductive bar and the phase N conductive bar respectively pass through the corresponding phase bar channels;
and a first clamping groove for clamping the interphase insulating part is formed in the side wall of the central channel.
Further, the interphase insulating member is a cross-shaped partition plate which divides the central passage into four independent passages in a longitudinal and transverse manner.
Further, the center line of the cross-shaped partition plate coincides with the axial direction of the central passage.
Further, the cross division board includes diaphragm and riser of mutual joint, be equipped with the third draw-in groove on the riser.
Further, the first clamping groove is clamped at the side edge of the cross-shaped partition plate.
Further, the circuit breaker further comprises a circuit board base, and a second clamping groove for clamping the side edge of the cross-shaped partition plate is formed in the bottom of the circuit board base.
Further, the interphase insulating part is beyond the bending position of the A-phase conducting bar, the B-phase conducting bar, the C-phase conducting bar and the N-phase conducting bar, which extend out of the central channel.
Further, the A-phase conducting bar and the N-phase conducting bar pass through the center of the central channel at the position which is above and close to the longitudinal symmetry axis, and the B-phase conducting bar and the C-phase conducting bar pass through the center of the zero sequence transformer at the position which is below and far from the longitudinal symmetry axis.
Further, the A-phase conductive bar and the N-phase conductive bar respectively pass through the central channel from the upper parts of the B-phase conductive bar and the C-phase conductive bar.
Further, the current transformers for passing through the A-phase conducting bars and the N-phase conducting bars are arranged in the vertical direction, and the A-phase conducting bars and the N-phase conducting bars pass through from bottom to top along the current direction;
The current transformer for the B-phase conducting bar and the C-phase conducting bar to pass through is arranged along the horizontal direction.
Compared with the prior art, the utility model has the following beneficial effects:
1) According to the utility model, the central channel of the zero sequence transformer is divided into mutually independent phase-row channels through the phase-to-phase insulating component, and the A-phase conducting bar, the B-phase conducting bar, the C-phase conducting bar and the N-phase conducting bar pass through the corresponding phase-to-row channels, so that the phase-to-phase rows are separated to increase the creepage distance, and the risk of phase-to-phase breakdown (short circuit) is reduced;
2) According to the utility model, the two ends of the interphase insulating component are beyond the bending parts of the A-phase conducting bar, the B-phase conducting bar, the C-phase conducting bar and the N-phase conducting bar, which extend out of the central channel, so that the mutual separation of the conducting bars of each phase is ensured, and the creepage distance is increased;
3) According to the utility model, the first clamping groove is formed in the side wall of the central channel, so that the installation stability of the interphase insulating part can be improved, the phase-to-phase channel can be fully separated by matching with the cross-shaped partition plate, and the effect of increasing the creepage distance can be achieved by using the bending fit clearance between the cross-shaped partition plate and the clamping groove;
4) The utility model has simple installation mode and does not need to wind insulating auxiliary parts such as insulating adhesive tapes, heat-shrinkable sleeves and the like.
Drawings
Fig. 1 and fig. 2 are schematic structural diagrams of a molded case circuit breaker provided with an electronic leakage transformer in an embodiment;
Fig. 3 and 4 are schematic structural views of a molded case circuit breaker (not shown in the circuit board base) provided with an electronic leakage transformer according to an embodiment;
fig. 5 is a cross-sectional view of a molded case circuit breaker provided with an electronic leakage transformer in an embodiment;
FIG. 6 is a schematic view of a circuit board base;
FIG. 7 is an exploded view of a removable cross-shaped divider plate;
FIG. 8 is a schematic view of an integrally formed cross-shaped divider plate;
The figure indicates:
1-zero sequence transformer, 11-zero sequence transformer casing, 12-first draw-in groove, 2-A looks conducting bar, 3-circuit board base, 32-second draw-in groove, 4-phase insulation part, 41-riser, 42-diaphragm, 43-third draw-in groove, 5-current transformer, 6-N looks conducting bar, 7-B looks conducting bar, 8-C looks conducting bar.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. The following examples are given with the above technical solutions of the present utility model as a premise, and detailed embodiments and specific operation procedures are given, but the scope of protection of the present utility model is not limited to the following examples.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and features of the embodiments may be combined with each other without conflict.
Examples
A molded case circuit breaker provided with an electronic leakage transformer as shown in fig. 1 to 5 comprises an a-phase conductor bar 2, a B-phase conductor bar 7, a C-phase conductor bar 8, an N-phase conductor bar 6, a current transformer 5 and a zero sequence transformer 1; the phase A conductive bar 2, the phase B conductive bar 7, the phase C conductive bar 8 and the phase N conductive bar 6 respectively pass through the corresponding current transformers 5 along the current direction and then pass through the zero sequence transformers 1 together; an interphase insulating part 4 is arranged in the zero sequence transformer 1, and the interphase insulating part 4 divides a central channel of the zero sequence transformer 1 into mutually independent phase arrangement channels; phase a conductor bar 2, phase B conductor bar 7, phase C conductor bar 8 and phase N conductor bar 6 pass through the corresponding phase row channels. The present embodiment separates the respective phases by the phase insulation member 4 to increase the creepage distance.
In some specific embodiments, interphase insulating member 4 is a cross-shaped divider plate that divides the central passage longitudinally and laterally into four separate passages. And preferably, the center line of the cross-shaped partition plate coincides with the axial direction of the central passage, and uniformly divides the central passage into four quadrants.
More specifically, as shown in fig. 7 to 8, the cross-shaped partition plate includes a transverse plate 42 and a vertical plate 41 that are clamped with each other, and a third clamping groove 43 is formed on the vertical plate 41. In other embodiments, the cross-shaped partition plate may be an integrally formed structure.
In some specific embodiments, as shown in fig. 3, a first clamping groove 12 for clamping the side edge of the cross-shaped partition plate is provided on the side wall of the central channel, so as to ensure the installation stability of the cross-shaped partition plate. Likewise, in some embodiments, the circuit breaker further includes a circuit board base 3, and a second clamping groove 32 for clamping the side edge of the cross-shaped partition plate is provided at the bottom of the circuit board base 3.
In some embodiments, as shown in fig. 4, interphase insulating member 4 extends beyond the bends of phase a conductor bar 2, phase B conductor bar 7, phase C conductor bar 8, phase N conductor bar 6 beyond the central passage, thereby spacing the phase conductor bars apart from one another and increasing the creepage distance.
In some specific embodiments, the a-phase conductor 2 and the N-phase conductor 6 pass through the center of the central channel above and near the longitudinal symmetry axis, and the B-phase conductor 7 and the C-phase conductor 8 pass through the zero sequence transformer 1 below and far from the longitudinal symmetry axis.
In some particular embodiments, phase a conductor 2 and phase N conductor 6 pass through the central channel from above phase B conductor 7 and phase C conductor 8, respectively.
Preferably, as shown in fig. 3, with respect to the vertical symmetry plane of the central passage, the a-phase conductive bars 2, N-phase conductive bars 6 symmetrically pass through the upper two quadrants of the central passage, the B-phase conductive bars 7, C-phase conductive bars 8 symmetrically pass through the lower two quadrants of the central passage, and the horizontal distance of the a-phase conductive bars 2, N-phase conductive bars 6 is smaller than the horizontal distance of the B-phase conductive bars 7, C-phase conductive bars 8. Regarding the horizontal symmetry plane of the central channel, the distance between the phase a conductor bar 2 and the phase N conductor bar 6 is greater than the distance between the phase B conductor bar 7 and the phase C conductor bar 8.
In some specific embodiments, the current transformer 5 for passing the a-phase conductor 2 and the N-phase conductor 6 is arranged along a vertical direction, and the a-phase conductor 2 and the N-phase conductor 6 pass through from bottom to top along a current direction;
the current transformer 5 for passing through the B-phase conductor 7 and the C-phase conductor 8 is arranged along the horizontal direction.
In some specific embodiments, the zero sequence transformer 1 is further provided with a zero sequence transformer housing 11.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.
Claims (10)
1. The molded case circuit breaker with the electronic leakage transformer is characterized by comprising an A-phase conducting bar (2), a B-phase conducting bar (7), a C-phase conducting bar (8), an N-phase conducting bar (6), a current transformer (5) and a zero sequence transformer (1);
Along the current direction, the phase A conducting bar (2), the phase B conducting bar (7), the phase C conducting bar (8) and the phase N conducting bar (6) respectively pass through the corresponding current transformers (5) and then pass through the zero sequence transformers (1) together;
An interphase insulating part (4) is arranged in the zero sequence transformer (1), and the interphase insulating part (4) divides a central channel of the zero sequence transformer (1) into a plurality of phase-arrangement channels; the phase A conducting bar (2), the phase B conducting bar (7), the phase C conducting bar (8) and the phase N conducting bar (6) respectively pass through corresponding phase bar channels;
The side wall of the central channel is provided with a first clamping groove (12) for clamping the interphase insulating part (4).
2. The molded case circuit breaker provided with an electronic leakage transformer according to claim 1, characterized in that the interphase insulating member (4) is a cross-shaped partition plate which divides the central passage into four independent passages in a longitudinal and a transverse direction.
3. The molded case circuit breaker provided with an electronic leakage transformer according to claim 2, wherein a center line of the cross-shaped partition plate coincides with an axial direction of the central passage.
4. The molded case circuit breaker with the electronic leakage transformer according to claim 2, wherein the cross-shaped partition plate comprises a transverse plate (42) and a vertical plate (41) which are clamped with each other, and a third clamping groove (43) is formed in the vertical plate (41).
5. The molded case circuit breaker provided with the electronic leakage transformer according to claim 2, wherein the first clamping groove (12) is clamped at the side edge of the cross-shaped partition plate.
6. The molded case circuit breaker with the electronic leakage transformer according to claim 2, further comprising a circuit board base (3), wherein a second clamping groove (32) for clamping the side edge of the cross-shaped partition plate is formed in the bottom of the circuit board base (3).
7. The molded case circuit breaker with the electronic leakage transformer according to claim 1, wherein the interphase insulating member (4) is beyond the bending position of the a-phase conductor (2), the B-phase conductor (7), the C-phase conductor (8) and the N-phase conductor (6) after extending out of the central channel.
8. The plastic shell circuit breaker provided with the electronic leakage transformer according to claim 1, wherein the A-phase conducting bar (2) and the N-phase conducting bar (6) pass through the center of the central channel and are close to the longitudinal symmetry axis, and the B-phase conducting bar (7) and the C-phase conducting bar (8) pass through the zero sequence transformer (1) from the center and are far away from the longitudinal symmetry axis.
9. The molded case circuit breaker provided with the electronic leakage transformer according to claim 1, wherein the a-phase conductor (2) and the N-phase conductor (6) respectively pass through the central channel from above the B-phase conductor (7) and the C-phase conductor (8).
10. The molded case circuit breaker provided with the electronic leakage transformer according to claim 1, wherein the current transformer (5) for passing through the a-phase conductor bar (2) and the N-phase conductor bar (6) is arranged along a vertical direction, and the a-phase conductor bar (2) and the N-phase conductor bar (6) pass through from bottom to top along a current direction;
The current transformer (5) used for the B-phase conducting bar (7) and the C-phase conducting bar (8) to pass through is arranged along the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322444893.6U CN220963200U (en) | 2023-09-08 | 2023-09-08 | Plastic case circuit breaker with electronic leakage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322444893.6U CN220963200U (en) | 2023-09-08 | 2023-09-08 | Plastic case circuit breaker with electronic leakage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220963200U true CN220963200U (en) | 2024-05-14 |
Family
ID=91016825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322444893.6U Active CN220963200U (en) | 2023-09-08 | 2023-09-08 | Plastic case circuit breaker with electronic leakage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220963200U (en) |
-
2023
- 2023-09-08 CN CN202322444893.6U patent/CN220963200U/en active Active
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