CN112763783A - All-fiber current transformer and all-fiber current transformer unit - Google Patents
All-fiber current transformer and all-fiber current transformer unit Download PDFInfo
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- CN112763783A CN112763783A CN202011467760.5A CN202011467760A CN112763783A CN 112763783 A CN112763783 A CN 112763783A CN 202011467760 A CN202011467760 A CN 202011467760A CN 112763783 A CN112763783 A CN 112763783A
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- 239000000835 fiber Substances 0.000 title claims abstract description 68
- 210000001503 joint Anatomy 0.000 claims abstract description 40
- 239000012212 insulator Substances 0.000 claims description 50
- 238000007789 sealing Methods 0.000 claims description 46
- 239000004020 conductor Substances 0.000 claims description 33
- 230000005611 electricity Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000002955 isolation Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 description 12
- 239000002184 metal Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 8
- 239000013307 optical fiber Substances 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
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- General Physics & Mathematics (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention relates to an all-fiber current transformer and an all-fiber current transformer unit. All-fiber current transformer includes sensing ring, first barrel, second barrel and sets up the insulating ring between first barrel and second barrel, and the insulating ring plays certain supporting role to the fixed mounting of first barrel and second barrel, also plays the effect of electrical isolation simultaneously, has prevented first barrel and second barrel from forming conductive loop, and the effectual interference of all-fiber current transformer received induced current that has avoided has improved all-fiber current transformer's precision. The first barrel and the second barrel are in butt joint and then enclose a sensing ring accommodating cavity, the sensing ring is directly arranged in the sensing ring mounting cavity, mounting steps are reduced, the structure of the all-fiber current transformer is simplified, and the technical problem that the assembly efficiency of all-fiber current transformer units is low due to the fact that the structure of the current transformer is complex is solved.
Description
Technical Field
The invention relates to an all-fiber current transformer and an all-fiber current transformer unit.
Background
The current transformer is used for measuring current in an electric power system, and an electromagnetic current transformer is commonly used in the existing GIS equipment, has larger volume, is easily interfered by external current by the current transformer wound by a coil, and has poorer stability.
Chinese patent with publication number CN202583293U and publication date 2012.12.05 discloses a three-phase box-divided GIS all-fiber current transformer, which comprises a housing, a housing cover plate, a switching housing, a shielding cylinder and a fiber sensing ring, wherein the switching housing is fixed with the housing, the fiber sensing ring is disposed in the housing, the shielding cylinder, the cover plate, the switching housing and the housing need to be assembled together, the structure is complex, and the technical problem of low assembly efficiency exists.
Disclosure of Invention
The invention aims to provide an all-fiber current transformer, which is used for solving the technical problem of low assembly efficiency caused by complex structure of the current transformer; in addition, the invention also aims to provide an all-fiber current transformer unit using the all-fiber current transformer.
The all-fiber current transformer adopts the following technical scheme:
the all-fiber current transformer comprises a sensing ring, a first cylinder and a second cylinder;
one end of the first barrel is a first barrel outer connecting end used for being connected with the switch equipment barrel, and the other end of the first barrel is a first barrel butt joint end detachably butted with the second barrel;
one end of the second barrel is a second barrel outer connecting end used for being connected with the switch equipment barrel, and the other end of the second barrel is a second barrel butt joint end detachably butted with the first barrel;
the first barrel butt joint end and the second barrel butt joint end are detachably connected, a sensing ring accommodating cavity is formed by enclosing after butt joint, and the sensing ring is arranged in the sensing ring accommodating cavity;
an insulating ring is arranged at the butt joint of the first cylinder and the second cylinder and used for preventing the first cylinder and the second cylinder from forming a conductive loop.
The beneficial effects are that: the butt joint department between first barrel and the second barrel is provided with the insulating ring, and the insulating ring plays certain supporting role to the fixed mounting of first barrel and second barrel, also plays the effect of electrical isolation simultaneously, has prevented first barrel and second barrel from forming conductive loop, and the effectual interference of receiving induced current of having avoided all-fiber current transformer has improved all-fiber current transformer's precision. First barrel and second barrel are directly docked to enclose into the sensing ring and hold the chamber, the sensing ring directly sets up in sensing ring installation cavity, has reduced the installation procedure, has simplified full optical fiber current transformer's structure, has solved the comparatively complicated lower technical problem of assembly efficiency who causes of present current transformer structure.
Furthermore, the butt joint end of the first barrel is provided with a groove with an opening facing the butt joint end of the second barrel, the butt joint end of the second barrel is provided with a sealing cover for plugging a groove opening of the groove, and the sensing ring accommodating cavity is formed after the groove is plugged by the sealing cover.
The beneficial effects are that: the groove is adopted to facilitate the installation of the sensing ring, the sensing ring accommodating cavity formed by the sealing cover and the groove is simple in structure and convenient to use, and the installation efficiency can be improved.
Further, the closure is formed by an annular plate disposed at the butt end of the second cylinder.
The beneficial effects are that: the cover on the groove is directly formed by the annular plate, so that the structure of the cover is simplified.
Further, an insulating ring is disposed inside the sensing ring.
The effective effects are as follows: the insulating ring is arranged on the inner side of the sensing ring, plays a certain supporting role in the fixed installation of the first cylinder and the second cylinder, has small influence on the sealing performance of the first cylinder and the second cylinder, and simplifies the sealing structure of the butt joint of the two cylinders.
Furthermore, the two axial sides of the insulating ring are provided with sealing rings which are respectively matched with the first cylinder and the second cylinder in a sealing way.
The beneficial effects are that: the axial both sides of insulating ring are provided with the sealing washer, get up sealed the junction of first barrel and second barrel, improve the sealing performance between the barrel is inside and the sensing ring.
Furthermore, a sealing gasket is arranged between the butt joint end of the first barrel and the butt joint end of the second barrel, and the sealing gasket is located on the outer side of the sensing ring.
The beneficial effects are that: the outer edge contact position of the first cylinder and the second cylinder is provided with a sealing gasket, so that the isolation effect on the external environment is achieved, the sensing ring arranged in the sensing ring accommodating cavity can be suitable for different environments, and the waterproof and moistureproof effects can be achieved.
The invention discloses a technical scheme of an all-fiber current transformer unit, which comprises the following steps:
all-fiber current transformer unit includes:
the all-fiber current transformer comprises a sensing ring, a first cylinder and a second cylinder;
a central conductor for conducting electricity with a conductor within the switchgear cartridge;
end insulators are fixed at the outer connecting end of the first cylinder and the outer connecting end of the second cylinder, and the end insulators, the first cylinder and the second cylinder enclose an insulating air chamber;
the end insulator comprises an insulator and a central insert fixed in the center of the end insulator;
the center insert is electrically conductive with the center conductor.
The beneficial effects are that: the fixed mounting position of the optical fiber sensing ring is formed after the first barrel and the second barrel are in butt joint, the shielding barrel is directly formed, the mounting steps are reduced, the structure of the all-optical fiber current transformer is simplified, and the technical problem that the assembly efficiency is low due to the fact that the structure of the current transformer is complex is solved. The all-fiber current transformer unit structure using the all-fiber current transformer is simpler, can be directly installed inside GIS equipment as a whole, simplifies the use process and improves the use efficiency.
Furthermore, the butt joint end of the first barrel is provided with a groove with an opening facing the butt joint end of the second barrel, the butt joint end of the second barrel is provided with a sealing cover for plugging a groove opening of the groove, and the sensing ring accommodating cavity is formed after the groove is plugged by the sealing cover.
The beneficial effects are that: the groove is adopted to facilitate the installation of the sensing ring, the sensing ring accommodating cavity formed by the sealing cover and the groove is simple in structure and convenient to use, and the installation efficiency can be improved.
Further, the closure is formed by an annular plate disposed at the butt end of the second cylinder.
The beneficial effects are that: the cover on the groove is directly formed by the annular plate, so that the structure of the cover is simplified.
Further, an insulating ring is disposed inside the sensing ring.
The effective effects are as follows: the insulating ring is arranged on the inner side of the sensing ring, plays a certain supporting role in the fixed installation of the first cylinder and the second cylinder, has small influence on the sealing performance of the first cylinder and the second cylinder, and simplifies the sealing structure of the butt joint of the two cylinders.
Furthermore, the two axial sides of the insulating ring are provided with sealing rings which are respectively matched with the first cylinder and the second cylinder in a sealing way.
The beneficial effects are that: the axial both sides of insulating ring are provided with the sealing washer, get up sealed the junction of first barrel and second barrel, improve the sealing performance between the barrel is inside and the sensing ring.
Furthermore, a sealing gasket is arranged between the butt joint end of the first barrel and the butt joint end of the second barrel, and the sealing gasket is located on the outer side of the sensing ring.
The beneficial effects are that: the outer edge contact position of the first cylinder and the second cylinder is provided with a sealing gasket, so that the isolation effect on the external environment is achieved, the sensing ring arranged in the sensing ring accommodating cavity can be suitable for different environments, and the waterproof and moistureproof effects can be achieved.
Furthermore, a contact seat which is in conductive insertion connection with the central conductor is arranged on the central insert of the end insulator.
The beneficial effects are that: the contact seat only needs to be inserted into the central insert, and the central conductor can realize conductive connection with the central insert, so that the connection is simpler and more efficient, and the installation process is simplified.
Furthermore, the first cylinder outer connecting end and the second cylinder outer connecting end are both provided with an external flange, and the end insulator and the external flange are fixed through bolts.
The beneficial effects are that: the position for installing the end insulator is arranged outside the cylinder body, and the connection between the end insulator and the external flange is firmer and simpler.
Drawings
Fig. 1 is a schematic structural diagram of an all-fiber current transformer unit in an embodiment 1 of the all-fiber current transformer unit according to the present invention;
FIG. 2 is a partial view of an all-fiber current transformer unit in accordance with embodiment 1 of the present invention;
in the figure: 1. an all-fiber current transformer; 11. a first cylinder; 111. the first cylinder body outer end; 112. a first barrel butt end; 113. a ring block; 12. a second cylinder; 121. the second cylinder body is externally connected with the end; 122. a second barrel butt joint end; 123. an annular plate; 13. an insulating ring; 131. a seal ring; 14. a sensing ring; 15. a sensing ring receiving cavity; 16. a gasket; 2. a center conductor; 21. a contact base; 211. a first cylinder center conductor contact base; 212. a second cylinder central conductor contact seat; 3. an end insulator; 31. a first barrel end insulator; 311. a first barrel end ferrule; 312. a first barrel end insulator; 313. a first barrel end central insert; 32. a second cylinder end insulator; 321. a second cylinder end metal ring; 322. a second cylinder end insulator; 323. the end part of the second cylinder body is embedded in the center.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships that are assumed to be orientations or positional relationships, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
The embodiment 1 of the all-fiber current transformer unit of the invention:
as shown in fig. 1 and 2, the all-fiber current transformer unit includes an all-fiber current transformer 1, a center conductor 2, and an end insulator 3.
The all-fiber current transformer 1 comprises a first cylinder 11, a second cylinder 12, an insulating ring 13 and a sensing ring 14.
The first barrel 11 has a first barrel outer connecting end 111 and a first barrel butt end 112, the second barrel 12 has a second barrel outer connecting end 121 and a second barrel butt end 122, the first barrel outer connecting end 111 and the second barrel outer connecting end 121 are both connected with an external switch equipment barrel, and the first barrel butt end 112 and the second barrel butt end 122 are detachably butted.
The end part of the first barrel butt joint end 112 is provided with an annular block 113, the annular block 113 is provided with a groove with an opening facing the second barrel butt joint end 122, the end part of the second barrel butt joint end 122 is provided with an annular plate 123, the annular plate 123 forms a sealing cover for sealing the groove opening on the annular block 113, when the first barrel butt joint end 112 is in butt joint with the second barrel butt joint end 122, the annular plate 123 is connected with the annular block 113, and an annular groove formed after the groove is sealed and sealed by the sealing cover is a sensing ring accommodating cavity 15 for the sensing ring 14 to be put in.
The two contact surfaces of the annular block 113 and the annular plate 123 are an outer contact surface located outside the sensor ring 14 and an inner contact surface located inside the sensor ring 14. The insulating ring 13 is disposed at the joint of the annular block 113 and the annular plate 123, and in this embodiment, the insulating ring 13 is a ring insulator disposed on the inner side of the sensing ring 14, i.e., on the inner contact surface. Two sealing rings 131 are arranged on two axial sides of the annular insulator, so that the two axial sides of the annular insulator are respectively in sealing fit with the first cylinder 11 and the second cylinder 12.
In order to improve the sealing performance of the sensor ring accommodating cavity 15, a sealing gasket 16 is arranged on the outer side contact surface of the annular block 113 and the annular plate 123, and the sealing gasket 16 is an annular sealing gasket which separates the connecting plate from the connecting block. The first barrel butt 112 and the second barrel butt 122 are detachably connected, and are fixed in a manner of a bolt in this embodiment, and the bolt passes through the annular block 113, the annular plate 123 and the sealing gasket 16 to fix the first barrel 11 and the second barrel 12 together.
Inboard contact surface butt joint department between first barrel 11 and the second barrel 12 is provided with insulating ring 13, and insulating ring 13 plays certain supporting role to the fixed mounting of annular piece 113 and annular plate 123 inward flange, plays the effect of electrical isolation simultaneously, prevents that first barrel 11 and second barrel 12 form the electrically conductive return circuit, carries out the current isolation, and the effectual backward flow that has avoided all-fiber current transformer 1 disturbs, has improved all-fiber current transformer 1's precision. The sealing rings 131 are arranged on two axial sides of the insulating ring 13, so that the SF6 gas inside the cylinder is isolated, and the sealing gasket 16 on the outer side contact surface of the annular block 113 and the annular plate 123 has the effect of isolating the external environment and has certain waterproof and moistureproof effects.
The end insulators 3 are two, namely a first cylinder end insulator 31 and a second cylinder end insulator 32, the first cylinder end insulator 31 is connected with the first cylinder outer end 111, the first cylinder outer end 111 is provided with an external flange, and the first cylinder end insulator 31 is fixed on the external flange of the first cylinder outer end 111 in a bolt connection mode.
The first cylinder end insulator 31 comprises a first cylinder end metal ring 311, a first cylinder end insulator 312 and a first cylinder end center insert 313, the first cylinder end metal ring 311 is embedded on the periphery of the first cylinder end insulator 312, the first cylinder end center insert 313 is embedded in the center of the first cylinder end insulator 312, and bolt holes corresponding to external flanges on the cylinders of the all-fiber current transformer 1 are formed in the first cylinder end metal ring 311 and used for inserting bolts for fixing. The first cylinder end ferrule 311 and the first cylinder end center insert 313 are molded together with the first cylinder end insulator 312 during injection molding of the first cylinder end insulator 312 to achieve fitting fixation.
The second barrel end insulator 32 has the same structure as the first barrel end insulator 31, the second barrel end insulator 32 includes a second barrel end metal ring 321, a second barrel end insulator 322 and a second barrel end central insert 323, and the second barrel end insulator 32 and the first barrel end insulator 31 are mounted in the same manner, which is not described again in this embodiment.
The central conductor 2 is a cylindrical conductor rod for electrically conductive connection with a conductor in the switchgear cartridge. The central conductor 2 is electrically connected in the contact seat 21 in an inserting mode, the number of the contact seats 21 is two, namely a first cylinder central conductor contact seat 211 and a second cylinder central conductor contact seat 212, two ends of the central conductor 2 are electrically connected with the first cylinder central conductor contact seat 211 and the second cylinder central conductor contact seat 212 respectively, and the first cylinder central conductor contact seat 211 is fixed on the first cylinder end central insert 313 and is electrically connected with the first cylinder end central insert 313. The second cylinder center conductor contact 212 is electrically connected to the other end of the center conductor 2 and fixed to the second cylinder end center insert 323.
The first cylinder 11, the second cylinder 12, the first cylinder end insulator 31 and the second cylinder end insulator 32 enclose an insulating air chamber, SF6 gas is filled in the air chamber to achieve good insulating performance, the central conductor 2 is fixed and conductively connected through the central insert and the contact seat 21 fixed on the central insert, so that the central conductor 2 is simpler and more convenient to fix, the conductive connection can be achieved with a conductor in a switchgear cylinder connected with the outside of an all-fiber current transformer unit, a metal ring is sleeved around an insulator of the end insulator 3, the hardness and the strength of the metal ring are greater than those of an insulating material, and when the metal ring is connected with an external flange on the cylinder through bolts, the problem that the insulating material deforms due to stress is effectively prevented.
In the process of mounting the all-fiber current transformer unit, after aligning the bolt holes on the edge metal ring 311 of the first cylinder insulator 31 with the bolt holes of the flange structure on the first cylinder 11, bolt connection is performed by using bolts, and the first cylinder center conductor contact base 211 is fixed on the first cylinder end center insert 313. The sensing ring 14 is placed in a groove formed by the annular block 113, the insulating ring 13 and the sealing gasket 16 are installed on one side of the annular block 113, then the annular plate 123 of the second cylinder 12 is installed opposite to the annular block 113 of the first cylinder 11, and the first cylinder 11 and the second cylinder 12 are connected together by fixing bolts through the annular plate 123, the sealing gasket 16 and the annular block 113. The central conductor 2 is inserted into the first cylinder central conductor contact seat 211, the second cylinder central conductor contact seat 212 is installed on the second cylinder end central insert, finally, the second cylinder end insulator 32 and the external flange of the second cylinder 12 are connected together by using bolts, and the all-fiber current transformer unit is installed.
In the process of using the all-fiber current transformer unit, the all-fiber current transformer unit is integrally installed in the GIS equipment and is in conductive connection with a conductor in a GIS switch equipment cylinder, so that the installation process is simplified, and the all-fiber current transformer unit is more convenient and faster to use.
The embodiment 2 of the all-fiber current transformer unit of the invention:
the difference from the all-fiber current transformer unit in embodiment 1 is that the cavity and the annular plate are fixedly connected by screws. In other embodiments, the metal ring and the external flange can be connected by screws.
the difference between the all-fiber current transformer unit and the above embodiment 1 is that the first barrel butt joint end and the second barrel butt joint end are both grooves, and the two grooves can be butted to form a sensing ring accommodating cavity for the sensing ring to be placed in. In other embodiments, the first barrel butt joint end and the second barrel butt joint end are in an L shape and a 7 shape, and the butt joint can form a sensing ring accommodating cavity for the sensing ring to be placed in.
Embodiment 4 of the all-fiber current transformer unit of the present invention:
the difference from the all-fiber current transformer unit in embodiment 1 is only that the sealing gasket uses a sealing ring to seal the annular block and the annular plate. In other embodiments, the sealing rings on both axial sides of the ring insulator may be replaced by sealing gaskets.
Embodiment 5 of the all-fiber current transformer unit of the present invention:
the difference with the all-fiber current transformer unit in embodiment 1 above is that the insulator is located outside the sensing ring, and at this time, the bolt connecting the first cylinder and the second cylinder needs to be insulated to prevent the first cylinder and the second cylinder from forming a conductive loop, and at this time, the sealing gasket is located inside the sensing ring to seal the inside of the cylinder, thereby playing a role in electrical isolation.
In the specific embodiment of the all-fiber current transformer of the present invention, the structure of the all-fiber current transformer in this embodiment is the same as that of the all-fiber current transformer described in any one of the specific embodiments of the all-fiber current transformer unit, and details are not repeated.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (9)
1. The all-fiber current transformer comprises a sensing ring, and is characterized by further comprising a first cylinder and a second cylinder;
one end of the first barrel is a first barrel outer connecting end used for being connected with the switch equipment barrel, and the other end of the first barrel is a first barrel butt joint end detachably butted with the second barrel;
one end of the second barrel is a second barrel outer connecting end used for being connected with the switch equipment barrel, and the other end of the second barrel is a second barrel butt joint end detachably butted with the first barrel;
the first barrel butt joint end and the second barrel butt joint end are detachably connected, a sensing ring accommodating cavity is formed by enclosing after butt joint, and the sensing ring is arranged in the sensing ring accommodating cavity;
an insulating ring is arranged at the butt joint of the first cylinder and the second cylinder and used for preventing the first cylinder and the second cylinder from forming a conductive loop.
2. The all-fiber current transformer of claim 1, wherein the first barrel interface end is provided with a groove opening to the second barrel interface end, the second barrel interface end is provided with a cover for sealing the groove opening, and the sensing ring receiving cavity is formed after the cover seals the groove.
3. The all-fiber current transformer of claim 2, wherein the cover is formed by an annular plate disposed at the butt end of the second cylinder.
4. The all-fiber current transformer of claim 1, 2 or 3, wherein said insulating ring is disposed inside the sensing ring.
5. The all-fiber current transformer of claim 4, wherein the insulating ring is provided with sealing rings on two axial sides thereof for sealing engagement with the first cylinder and the second cylinder, respectively.
6. The all-fiber current transformer of claim 1, 2 or 3, wherein a gasket is disposed between the first barrel butt end and the second barrel butt end, and the gasket is located outside the sensing ring.
7. All-fiber current transformer unit, its characterized in that includes:
an all-fiber current transformer, the all-fiber current transformer of any one of claims 1-6;
a central conductor for conducting electricity with a conductor within the switchgear cartridge;
end insulators are fixed at the outer connecting end of the first cylinder and the outer connecting end of the second cylinder, and the end insulators, the first cylinder and the second cylinder enclose an insulating air chamber;
the end insulator comprises an insulator and a central insert fixed in the center of the end insulator;
the center insert is electrically conductive with the center conductor.
8. The all-fiber current transformer unit of claim 7, wherein said central insert of said end insulator is provided with a contact seat for electrically conductive engagement with said central conductor.
9. The all-fiber current transformer unit of claim 7, wherein the first and second external connection ends of the barrel are provided with external flanges, and the end insulator and the external flanges are fixed by bolts.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011467760.5A CN112763783A (en) | 2020-12-14 | 2020-12-14 | All-fiber current transformer and all-fiber current transformer unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011467760.5A CN112763783A (en) | 2020-12-14 | 2020-12-14 | All-fiber current transformer and all-fiber current transformer unit |
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| CN112763783A true CN112763783A (en) | 2021-05-07 |
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| CN104391156A (en) * | 2014-11-07 | 2015-03-04 | 易能乾元（北京）电力科技有限公司 | All-optical fiber current transformer integrated with isolation circuit breaker |
| CN204479634U (en) * | 2015-01-28 | 2015-07-15 | 贵州电力试验研究院 | A kind of all-fiber current transformator with integrated form primary side sensing unit |
| CN105425006A (en) * | 2015-11-06 | 2016-03-23 | 北京航天时代光电科技有限公司 | Novel full-fiber current transformer of isolation circuit breaker type |
| CN205786794U (en) * | 2016-07-20 | 2016-12-07 | 山东泰开高压开关有限公司 | A kind of Cubicle Gas-Insulated Switchgear all-fiber current transformator |
| CN206038740U (en) * | 2016-08-30 | 2017-03-22 | 中国西电电气股份有限公司 | GIS uses and all -fiber current transformer thereof |
| CN214750511U (en) * | 2020-12-14 | 2021-11-16 | 河南平高电气股份有限公司 | All-fiber current transformer and all-fiber current transformer unit |
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Application publication date: 20210507 |