CN110957106A - Open type mutual inductor - Google Patents
Open type mutual inductor Download PDFInfo
- Publication number
- CN110957106A CN110957106A CN201911267088.2A CN201911267088A CN110957106A CN 110957106 A CN110957106 A CN 110957106A CN 201911267088 A CN201911267088 A CN 201911267088A CN 110957106 A CN110957106 A CN 110957106A
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- Prior art keywords
- shell
- limiting table
- connecting plate
- limiting
- casing
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- 238000003032 molecular docking Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Casings For Electric Apparatus (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The invention relates to an open type mutual inductor which comprises a shell, wherein a plurality of fixing supports are arranged on the shell, each fixing support comprises a connecting plate, and the connecting plates are arranged on the shell in a sliding manner; the push-pull connecting plate can realize that the connecting plate extends out of the shell or does not extend out of the shell; the shell is provided with a first limiting table and a second limiting table, the first limiting table and the second limiting table are arranged along the sliding direction of the connecting plate, the edge of the first limiting table, which is close to the shell, is stupefied, the side surface of the second limiting table, which faces the connecting plate, is a cambered surface, and the axial direction of the cambered surface is vertical to the sliding direction of the connecting plate; the connecting plate is provided with a through hole, when the fixing support is folded inside the shell, the first limiting table and the second limiting table are positioned in the through hole, and the second limiting table limits the fixing support; when the fixed support is pulled to extend out of the shell, the first limiting table limits the maximum extending amount of the fixed support. The mutual inductor has reasonable structure, beautiful appearance and convenient installation; the transportation process is not easy to collide, and the packaging and transportation cost is reduced.
Description
Technical Field
The invention relates to the technical field of mutual inductors, in particular to an open type mutual inductor.
Background
The transformer, which is a general name of current transformer and voltage transformer, can convert high voltage or large current into standard low voltage or standard small current in proportion, so as to realize standardization and miniaturization of measuring instrument, protection equipment and automatic control equipment. Meanwhile, the mutual inductor can be used for isolating a high-voltage system so as to ensure the safety of people and equipment.
At present, in the mutual inductor production process, the design of mutual inductor casing still has a great deal of not enough: the mutual inductor sets up the mount pad of connecting usefulness on the casing, fixes the mutual inductor on mounting panel or wall through the screw, and the mount pad evagination not only occupies space during the packing transportation, increases the packing cost of transportation, still brings pressure for the environmental protection, and convex mount pad is still because of colliding with the damage easily. For the open type current transformer, the open type current transformer is installed on the installation plate through the bolt, so that the installation of the open type current transformer is inconvenient; the two parts of the mutual inductor are relatively troublesome to combine, and the consistency of the performance of combining again after the mutual inductor is opened is poor.
Disclosure of Invention
The invention aims to solve the technical problem of providing an open type mutual inductor which is reasonable in structure, attractive in appearance and convenient to install.
In order to solve the technical problems, the technical scheme of the invention is as follows: the open type mutual inductor comprises a shell, wherein a plurality of fixing supports are arranged on the shell, each fixing support comprises a connecting plate, and the connecting plates are arranged on the shell in a sliding manner; the connecting plate is pushed and pulled to realize that the connecting plate extends out of the shell or does not extend out of the shell; the shell is provided with a first limiting table and a second limiting table, the first limiting table and the second limiting table are arranged along the sliding direction of the connecting plate, the edge of the first limiting table, which is close to the shell, is stupefied, the side surface of the second limiting table, which faces the connecting plate, is an arc surface, and the axial direction of the arc surface is vertical to the sliding direction of the connecting plate; the connecting plate is provided with a through hole, when the fixing support is folded inside the shell, the first limiting table and the second limiting table are positioned in the through hole, and the second limiting table limits the fixing support; when the fixed support is drawn out of the shell, the first limiting table limits the maximum extending amount of the fixed support.
As an optimized technical scheme, connecting lugs are arranged on two opposite sides of the connecting plate, two guide rail grooves matched with the two connecting lugs are formed in the shell, and the through holes are located between the two connecting lugs.
As a preferred technical scheme, the side surface of the first limiting table facing the second limiting table is a limiting surface, and the limiting surface is perpendicular to the shell; the side face of the first limiting table opposite to the limiting face is an inclined face.
As a preferable technical scheme, the connecting plate is provided with a plurality of guide tables protruding towards the shell side; the guide table is hemispherical.
As a preferred technical scheme, a terminal connecting window is arranged on the shell, and a terminal cover plate covers the terminal connecting window; the terminal cover plate comprises a cover plate main body, two opposite ends of the cover plate main body are respectively provided with a connecting seat and a clamping seat, two opposite sides of the connecting seat are respectively provided with a rotating shaft, and the terminal cover plate is rotatably connected with the shell through the rotating shafts; two elastic grooves are formed in the position, close to the rotating shaft, of the connecting seat, and the extending direction of the elastic grooves is perpendicular to the axial direction of the rotating shaft.
As the preferred technical scheme, the casing includes that butt joint is annular first casing and second casing each other, the both ends of first casing respectively with the both ends of second casing are articulated and the joint.
As a preferred technical scheme, the first shell is provided with two connecting seat plates extending towards the outer side of the first shell, a pin shaft is arranged between the two connecting seat plates, and the pin shaft is positioned on the side of the connecting seat plate close to the first shell; the second shell is rotatably connected with the pin shaft.
As a preferred technical scheme, the second shell is provided with a connecting shaft sleeve, and the connecting shaft sleeve is sleeved on the outer side of the pin shaft; the outer side wall of the connecting shaft sleeve facing the first shell is provided with a first convex limiting part, the first shell is provided with a second limiting part, and the first limiting part and the second limiting part are matched with each other to limit the maximum relative rotation angle of the first shell and the second shell; the middle part of the connecting shaft sleeve is provided with a first wire passing channel, and the first shell is provided with a second wire passing channel communicated with the first wire passing channel.
As a preferred technical scheme, the first shell and the second shell are clamped through a buckle assembly; the first shell is provided with a clamping hole, the second shell is provided with a button channel, two buttons are arranged in the button channel in a sliding mode, a buckle is fixed at the inner end of each button, a window is arranged on the side face, facing the first shell, of the button channel, and the buckle extends out of the window; a locking spring is arranged between the two buttons, and when the first shell and the second shell are clamped, the two buckles are clamped in the clamping holes; and when the two buttons are pressed, the two buckles are close to each other to allow the two buckles to be separated from the buckle holes.
As a preferable technical scheme, lugs are arranged on the back-facing side surfaces of the two buckles.
Due to the adoption of the technical scheme, the open type mutual inductor has the following advantages:
1) the number of the fixed supports can be set on the shell according to the requirement, and the fixed supports can extend out of the shell to conveniently fix the mutual inductor;
2) the fixed bracket can also be retracted inside the shell, namely not extending out of the shell; when the transformer is folded inside the shell, the fixed support is tightly attached to the outer side of the shell, the occupied space is small, the transformer is concise in appearance, the transformer is convenient to package, the transformer is not easy to collide during transportation, and the packaging and transportation cost is reduced;
3) the shell comprises a first shell and a second shell, the first shell is provided with a connecting seat plate to wrap the second shell, and the appearance of the transformer is attractive;
4) the shell structure is reasonable, the first shell and the second shell are internally provided with the iron core and the coil, the coils in the first shell and the second shell are communicated through the first wire passing channel and the second wire passing channel, the circuit is completely positioned in the shell, and the appearance of the transformer is concise;
5) the rotation angle of the first shell and the second shell can be limited, and the line extrusion abrasion and the like can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the structure of the fixing bracket when it is retracted;
FIG. 2 is a schematic view of the structure of the fixing bracket when it is drawn out of the housing;
FIG. 3 is a schematic view of the connection structure of the fixing bracket and the housing;
FIG. 4 is a schematic view of the attachment of the mounting bracket to the housing;
FIG. 5 is a schematic three-dimensional structure of a fixing bracket;
FIG. 6 is a schematic structural view of the housing;
FIG. 7 is a schematic view of a connection structure of the first housing and the second housing;
FIG. 8 is an enlarged partial view of area A of FIG. 7;
FIG. 9 is an enlarged partial view of area B of FIG. 7;
FIG. 10 is an enlarged partial view of area C of FIG. 7;
fig. 11 is a schematic structural view of the terminal cover plate.
Detailed Description
Open type mutual-inductor, including the casing, as shown in fig. 1, fig. 2, fig. 6 and fig. 7, the casing includes that butt joint is annular first casing 1 and second casing 2 each other, and the both ends of first casing 1 are articulated and the joint with the both ends of second casing 2 respectively. The first casing 1 is composed of a first upper casing 12 and a first lower casing 11; the first upper shell 12 and the first lower shell 11 are butted to form a first inner cavity for accommodating the iron core and the coil; the second housing 2 is composed of a second upper housing 22 and a second lower housing 21, and the second upper housing 22 and the second lower housing 21 are butted to form a second inner cavity for accommodating the core and the coil.
As shown in fig. 3, 4 and 5, the casing is provided with a plurality of fixing brackets 3, and the fixing brackets 3 are used for fixing the transformer on the mounting plate. The fixed bracket 3 comprises a connecting plate 33, and the connecting plate 33 is arranged on the shell in a sliding manner; the push-pull connecting plate 33 can realize that the connecting plate 33 extends out of the shell or does not extend out of the shell; the shell is provided with a first limiting table 12 and a second limiting table 11, the first limiting table 12 and the second limiting table 11 are arranged along the sliding direction of the connecting plate 33, the edge of the first limiting table 12, which is close to the shell, is stupefied, the side surface of the second limiting table 11, which faces the connecting plate 33, is an arc surface, and the axial direction of the arc surface is vertical to the sliding direction of the connecting plate; the connecting plate 33 is provided with a through hole 31, when the fixed support 3 is folded inside the shell, the first limiting table 12 and the second limiting table 11 are positioned in the through hole 31, and the second limiting table 11 limits the fixed support 3; the first limit stop 12 limits the maximum extension of the fixing support 3 when the fixing support 3 is drawn out of the housing.
Preferably, the connecting plate 33 is provided with two connecting lugs 34 at opposite sides thereof, the housing is provided with two guide rail grooves 13 respectively matched with the two connecting lugs 34, and the through hole 31 is located between the two connecting lugs 34. The connecting lug 34 may be L-shaped as shown in the figure, or may be inverted T-shaped, which not only guides the connecting plate 33, but also prevents it from falling off the housing.
The side surface of the first limiting table 12 facing the second limiting table 11 is a limiting surface, and the limiting surface is perpendicular to the shell; when the fixed bracket 3 is pulled and extended to the maximum extent, the limiting surface is attached to the inner side of the through hole 31 and prevents the fixed bracket 3 from moving outwards. The side of the first limit table 12 opposite to the limit surface is an inclined surface, and is used for guiding the fixing support 3 to be installed when the fixing support 3 is assembled with the shell.
Preferably, the connection plate 33 is provided with a plurality of guide stages 32 projecting toward the housing side; the guide table 32 is formed in a hemispherical shape, and the contact with the housing is point contact, so that the frictional resistance between the connecting plate 33 and the housing is reduced, and the operation is labor-saving. As shown in fig. 3, two guide bosses 32 are provided on the connecting plate 33, and the two guide bosses 32 are respectively located on both sides of the through hole 31. One or more guide platforms 32 may be disposed on the connection plate 33 according to actual use requirements.
The shell is provided with a terminal connecting window, and a terminal cover plate 4 covers the terminal connecting window. As shown in fig. 11, the terminal cover plate 4 includes a cover plate main body 41, the opposite ends of the cover plate main body 41 are respectively provided with a connecting seat 44 and a clamping seat 42, and the clamping seat 42 is provided with a clamping boss 43 for being matched with a clamping groove structure on the housing, so as to open or close the terminal cover plate 4. The opposite two sides of the connecting base 44 are respectively provided with a rotating shaft 45, and the terminal cover plate 4 is rotatably connected with the shell through the rotating shafts 45; the connecting seat 44 is provided with two elastic grooves 46 adjacent to the rotating shaft 45, and the extending direction of the elastic grooves 46 is perpendicular to the axial direction of the rotating shaft 45. The provision of the elastic groove 46 not only facilitates the assembly of the terminal cover plate 4 with the housing, but also provides good sealing performance for the terminal connection window.
As shown in fig. 6 and 7, first case 1 is provided with two connection seat plates 14 extending to the outside thereof, and two connection seat plates 14 are respectively located on first upper case 12 and first lower case 11. A pin shaft is arranged between the two connecting seat plates 14, and the pin shaft is a common pin shaft and is not shown in the figure. The pin shaft is positioned on the side of the connecting seat plate 14 close to the first shell 1; the second housing 2 is rotatably connected to the pin. The two connecting seat plates 14 wrap the hinged part of the first shell 1 and the second shell 2, so that the appearance of the shell is simple and beautiful; meanwhile, the first shell 1 and the second shell 2 rotate relatively to have small influence on circuits near the mutual inductor, and the problems of line clamping, incapability of opening and the like are avoided.
As shown in fig. 8, the second housing 2 is provided with a connecting shaft sleeve 23, and the connecting shaft sleeve 23 is sleeved outside the pin shaft; the outer side wall of the connecting shaft sleeve 23 facing the first shell 1 is provided with a convex first limiting part 25, the first shell 1 is provided with a second limiting part 16, and the first limiting part 25 and the second limiting part 16 are matched with each other to limit the maximum angle of relative rotation of the first shell 1 and the second shell 2; the middle part of the connecting shaft sleeve 23 is provided with a first wire passing channel 24, and the first shell 1 is provided with a second wire passing channel 15 communicated with the first wire passing channel 24. The first casing 1 is composed of a first upper casing 12 and a first lower casing 11, and the first stopper 25 is provided not only on the first upper casing 12 but also on the first lower casing 11; likewise, the connecting bushing 23 is located not only on the second upper housing 22 but also on the second lower housing 21; preferably, the first wire passage 24 is located at the joint of the second upper shell 22 and the second lower shell 21, which facilitates the processing. The first wire passing channel 24 and the second wire passing channel 15 communicate the inner cavities of the first shell 1 and the second shell 2, when the terminal connecting window is arranged on the first shell 1 or the second shell 2, the circuit for winding the coil is arranged in the shell, the appearance of the mutual inductor is not influenced, and the circuit can be prevented from being damaged.
The first shell 1 and the second shell 2 are clamped through a clamping assembly; as shown in fig. 9 and 10, the first casing 1 is provided with a fastening hole 17, the second casing 2 is provided with a button channel 26, two buttons 27 are slidably arranged in the button channel 26, a fastener 28 is fixed at the inner end of the button channel 27, a window 29 is arranged on the side surface of the button channel 26 facing the first casing 1, and the fastener 28 extends out of the window 29; a locking spring is arranged between the two buttons 27, the spring is not shown in the figure, and when the first shell 1 and the second shell 2 are clamped, the two buckles 28 are clamped in the clamping holes 17; pressing the two buttons 27, the two catches 28 approach each other allowing the two catches 28 to disengage from the catch holes 17. Preferably, the two clips 28 are provided with lugs on their back sides, and when the clips 28 are clipped in the clip holes 17, the lugs are in the first inner cavity of the housing 1, so as to prevent the first housing 1 and the second housing 2 from being failed in connection.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. Open type mutual-inductor, including the casing, its characterized in that: the shell is provided with a plurality of fixing supports, each fixing support comprises a connecting plate, and the connecting plates are arranged on the shell in a sliding mode; the connecting plate is pushed and pulled to realize that the connecting plate extends out of the shell or does not extend out of the shell; the shell is provided with a first limiting table and a second limiting table, the first limiting table and the second limiting table are arranged along the sliding direction of the connecting plate, the edge of the first limiting table, which is close to the shell, is stupefied, the side surface of the second limiting table, which faces the connecting plate, is an arc surface, and the axial direction of the arc surface is vertical to the sliding direction of the connecting plate; the connecting plate is provided with a through hole, when the fixing support is folded inside the shell, the first limiting table and the second limiting table are positioned in the through hole, and the second limiting table limits the fixing support; when the fixed support is drawn out of the shell, the first limiting table limits the maximum extending amount of the fixed support.
2. The open-type transformer of claim 1, wherein: the relative both sides of connecting plate are equipped with the engaging lug, be equipped with respectively with two on the casing two guide rail grooves of engaging lug matched with, the through-hole is located two between the engaging lug.
3. The open-type transformer of claim 1, wherein: the side surface of the first limiting table facing the second limiting table is a limiting surface, and the limiting surface is perpendicular to the shell; the side face of the first limiting table opposite to the limiting face is an inclined face.
4. The open-type transformer of claim 1, wherein: the connecting plate is provided with a plurality of guide tables protruding towards the shell side; the guide table is hemispherical.
5. The open transformer according to any one of claims 1 to 4, characterized in that: the shell is provided with a terminal connecting window, and a terminal cover plate covers the terminal connecting window; the terminal cover plate comprises a cover plate main body, two opposite ends of the cover plate main body are respectively provided with a connecting seat and a clamping seat, two opposite sides of the connecting seat are respectively provided with a rotating shaft, and the terminal cover plate is rotatably connected with the shell through the rotating shafts; two elastic grooves are formed in the position, close to the rotating shaft, of the connecting seat, and the extending direction of the elastic grooves is perpendicular to the axial direction of the rotating shaft.
6. The open-type transformer of claim 1, wherein: the casing is including docking each other and being annular first casing and second casing, the both ends of first casing respectively with the both ends of second casing are articulated and the joint.
7. The open-type transformer of claim 6, wherein: the first shell is provided with two connecting seat plates extending towards the outer side of the first shell, a pin shaft is arranged between the two connecting seat plates, and the pin shaft is positioned on the side of the connecting seat plates close to the first shell; the second shell is rotatably connected with the pin shaft.
8. The open-type transformer of claim 7, wherein: the second shell is provided with a connecting shaft sleeve, and the connecting shaft sleeve is sleeved outside the pin shaft; the outer side wall of the connecting shaft sleeve facing the first shell is provided with a first convex limiting part, the first shell is provided with a second limiting part, and the first limiting part and the second limiting part are matched with each other to limit the maximum relative rotation angle of the first shell and the second shell; the middle part of the connecting shaft sleeve is provided with a first wire passing channel, and the first shell is provided with a second wire passing channel communicated with the first wire passing channel.
9. The open-type transformer of claim 6, wherein: the first shell and the second shell are clamped through a clamping component; the first shell is provided with a clamping hole, the second shell is provided with a button channel, two buttons are arranged in the button channel in a sliding mode, a buckle is fixed at the inner end of each button, a window is arranged on the side face, facing the first shell, of the button channel, and the buckle extends out of the window; a locking spring is arranged between the two buttons, and when the first shell and the second shell are clamped, the two buckles are clamped in the clamping holes; and when the two buttons are pressed, the two buckles are close to each other to allow the two buckles to be separated from the buckle holes.
10. The open-ended transformer of claim 9, wherein: and the side surfaces of the two buckles facing back are respectively provided with a lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911267088.2A CN110957106B (en) | 2019-12-11 | 2019-12-11 | Open type mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911267088.2A CN110957106B (en) | 2019-12-11 | 2019-12-11 | Open type mutual inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110957106A true CN110957106A (en) | 2020-04-03 |
| CN110957106B CN110957106B (en) | 2024-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911267088.2A Active CN110957106B (en) | 2019-12-11 | 2019-12-11 | Open type mutual inductor |
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| Country | Link |
|---|---|
| CN (1) | CN110957106B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735737A (en) * | 2020-12-09 | 2021-04-30 | 安徽华能集团电器有限公司 | Open type high saturation voltage transformer clamping cable and convenient to install |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209216749U (en) * | 2019-01-28 | 2019-08-06 | 柏宜照明（上海）股份有限公司 | Mutual inductor |
| CN209418292U (en) * | 2019-01-28 | 2019-09-20 | 柏宜照明（上海）股份有限公司 | Expansible residual current transformer shell |
| CN210925652U (en) * | 2019-12-11 | 2020-07-03 | 山东铂晶智能科技有限公司 | Open type mutual inductor |
-
2019
- 2019-12-11 CN CN201911267088.2A patent/CN110957106B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209216749U (en) * | 2019-01-28 | 2019-08-06 | 柏宜照明（上海）股份有限公司 | Mutual inductor |
| CN209418292U (en) * | 2019-01-28 | 2019-09-20 | 柏宜照明（上海）股份有限公司 | Expansible residual current transformer shell |
| CN210925652U (en) * | 2019-12-11 | 2020-07-03 | 山东铂晶智能科技有限公司 | Open type mutual inductor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735737A (en) * | 2020-12-09 | 2021-04-30 | 安徽华能集团电器有限公司 | Open type high saturation voltage transformer clamping cable and convenient to install |
| CN112735737B (en) * | 2020-12-09 | 2023-02-14 | 安徽华能集团电器有限公司 | Open type high saturation voltage transformer clamping cable and convenient to install |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110957106B (en) | 2024-08-20 |
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