CN110428955A - Secondary outlet box sealing structure based on outdoor type epoxy resin mutual inductor - Google Patents
Secondary outlet box sealing structure based on outdoor type epoxy resin mutual inductor Download PDFInfo
- Publication number
- CN110428955A CN110428955A CN201910826182.0A CN201910826182A CN110428955A CN 110428955 A CN110428955 A CN 110428955A CN 201910826182 A CN201910826182 A CN 201910826182A CN 110428955 A CN110428955 A CN 110428955A
- Authority
- CN
- China
- Prior art keywords
- mutual inductor
- terminal box
- box
- threaded hole
- epoxy resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003822 epoxy resin Substances 0.000 title claims abstract description 26
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 26
- 238000007789 sealing Methods 0.000 title claims abstract description 25
- 238000005266 casting Methods 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 230000006978 adaptation Effects 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 229920000459 Nitrile rubber Polymers 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 238000005516 engineering process Methods 0.000 abstract description 7
- 210000004907 gland Anatomy 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
Classifications
-
- 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
-
- 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
- H01F27/022—Encapsulation
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/005—Impregnating or encapsulating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
A kind of secondary outlet box sealing structure based on outdoor type epoxy resin mutual inductor is provided, the secondary terminal box that opening is arranged outwardly is using epoxy resin and mutual inductor pour mass one moulding by casting, threaded hole I is reserved with by mold I on secondary terminal box bottom wall and two sidewalls and is cast in the secondary outlet terminal that mutual inductor is poured on body sidewall and is located in secondary terminal box, Ge Lantou is screwed with the adaptation of threaded hole I and secondary cable passes through Ge Lan and connect with secondary outlet terminal, the end face quadrangle of secondary terminal box open end is reserved with threaded hole II and cover board by gasket by mold II and is adapted to the screw screwed with threaded hole II and seals secondary terminal box open end.The present invention realizes the sealed connection of Ge Lan and gland and secondary outlet box, it solves the problems, such as to reserve secondary cable outlet hole on secondary outlet box and bring leakproofness is poor, simplify the technology difficulty of mutual inductor production, it reduces the production cost, guarantees the degree of protection of mutual inductor secondary connection box in IP54 or more.
Description
Technical field
The invention belongs to technical field of electric equipment, and in particular to a kind of based on the secondary of outdoor type epoxy resin mutual inductor
Outlet box sealing structure.
Background technique
Outdoor type poured with epoxy resin mutual inductor is widely used in electrical power trans mission/distribution system, to substitute oil immersion type mutual-inductor,
Cast-type mutual inductor has the advantages that oil-free, explosion-proof, pollution-free, non-maintaining compared with oil immersion type mutual-inductor.Current country 35kV
And in mesolow electrical power trans mission/distribution system below, the mutual inductor of indoor type is all changed to cast-type mutual inductor, the mutual inductance of outdoor type
The device overwhelming majority has also been changed to cast-type.
Outdoor poured with epoxy resin mutual inductor is generally full-closed structure, and coil, iron core and major insulation are cast in epoxy
In resin-cast body, a closed entity is formed, there is good leakproofness and weatherability.But the secondary outlet box of mutual inductor
The position of (also commonly referred to as " secondary terminal box "), due to secondary cable outlet hole to be left, sealing problem is not very
It is good to solve.The many holes for only merely staying a 20~φ of φ 40 of home products, are unfavorable for sealing；External similar product be
Installing a metal shell on pour mass again can be in shell outlet hole portion since metal shell is compared with Pu as secondary terminal box
Position installation Ge Lantou (Waterproof connector of cable) is used as seal means, and degree of protection can achieve IP54 or more；Due to Ge Lantou's
Fixed thread length is usually no more than 10mm, therefore is only suitable for being installed on the shell of 5mm or less thickness.External sealing requirements are higher
Product, secondary terminal box is made into the form of aviation socket, degree of protection can achieve IP67 or more.But these are all significantly
The difficulty for improving mutual inductor manufacture craft also increases more cost, in view of the above-mentioned problems, it is necessary to improve.
Summary of the invention
Present invention solves the technical problem that: a kind of secondary outlet box sealing based on outdoor type epoxy resin mutual inductor is provided
Structure, using mold I and mold II on the side wall of secondary terminal box, bottom wall and the end face of open end I and of reserved screwed hole
Threaded hole II realizes the sealed connection of Ge Lan and gland and secondary outlet box, solve reserved on secondary outlet box it is secondary
The problem of cable outlet hole and bring leakproofness difference simplifies the technology difficulty of mutual inductor production, reduces the production cost, and protects
The degree of protection of mutual inductor secondary connection box is demonstrate,proved in IP54 or more.
The technical solution adopted by the present invention: the secondary outlet box sealing structure based on outdoor type epoxy resin mutual inductor, packet
Iron core, coil and the major insulation for including shell and being set in the housing, and iron core, coil and major insulation are poured by epoxy resin
Note is formed in the interior thereof the mutual inductor pour mass of sealing entity, and shell lower end one side wall is equipped with secondary terminal box and opening
The secondary terminal box being arranged outwardly is using epoxy resin and mutual inductor pour mass one moulding by casting, the bottom of the secondary terminal box
Threaded hole I is reserved with by mold I on wall and two sidewalls and is cast in the secondary outlet terminal position that mutual inductor is poured on body sidewall
In in secondary terminal box, Ge Lantou is screwed with the adaptation of threaded hole I and secondary cable passes through Ge Lan and connect with secondary outlet terminal,
The end face quadrangle of the secondary terminal box open end is reserved with threaded hole II by mold II and cover board passes through gasket and and screw thread
Hole II is adapted to the screw screwed and seals secondary terminal box open end.
Wherein, the mold I is length >=secondary terminal box wall thickness stud, is formed with and is convenient on the end face of the mold I
The cross recess that mold I screws out, the nominal diameter of external pressure section mates=1.008 × threaded hole I of the mold I.
Further, the mold II is made of template and cushion block, and template plate face quadrangle is equipped with round cushion block and sets
It is arranged concentrically through cushion block and with cushion block, nominal diameter=1.008 × threaded hole of the screw hole in the screw hole in template plate face
II nominal diameter, and protruded into the end face of uncured secondary terminal box open end after screw and spiral conjunction, the cushion block exists
The circular groove that secondary terminal box open end end face is formed is used for the gasket being arranged between cover board and secondary terminal box, and spacer thickness is big
In the thickness of cushion block.
Further, the cover board be metal plate be made and cover board quadrangle be formed with solidify after secondary terminal box open end
The through-hole that threaded hole II is adapted to, through-hole and gasket of the fixing screws on cover board are adapted to after screwing with threaded hole II will be described
Gasket is nitrile rubber plain cushion.
Further, described Ge Lan is the self-seal type structure for carrying the region between the heart and the diaphragm plate.
The present invention compared with prior art the advantages of:
1, the technical program is using mold I and mold II in the side wall of secondary terminal box, bottom wall and the end face of open end
Upper reserved screwed hole I and threaded hole II realize the sealed connection of Ge Lan and gland and secondary outlet box, solve it is secondary out
The problem of secondary cable outlet hole and bring leakproofness difference is reserved in wire box；
2, the technical program pours into an integrated entity secondary terminal box and mutual inductor pour mass formula structure, simplifies mutual inductor
The manufacturing process of production technology and secondary terminal box improves the production efficiency of mutual inductor；
3, Ge Lantou is directly installed on the secondary terminal box being integrated with mutual inductor pour mass by the technical program, it is not necessary to
In addition metal secondary terminal box shell is processed, the cost of manufacture of secondary terminal box is reduced, Ge Lantou is the sealing of included the region between the heart and the diaphragm plate
Structure ensure that the Ge Lantou not used can also be in sealing state；
4, the technical program simplifies the technology difficulty of mutual inductor production, reduces the production cost, and guarantees that mutual inductor is secondary
The degree of protection of terminal box is in IP54 or more.
Detailed description of the invention
Fig. 1 is secondary terminal box structural front view of the present invention；
Fig. 2 is secondary terminal box structure top view of the present invention；
Fig. 3 is secondary connection box structure right view of the present invention；
Fig. 4 is I structural front view of inventive die；
Fig. 5 is I structure bottom view of inventive die；
Fig. 6 is II structural schematic diagram of inventive die；
Fig. 7 is the cross-sectional view of A-A in Fig. 6；
Fig. 8 is the structural front view that the present invention is set on outdoor type epoxy resin mutual inductor；
Fig. 9 is the structure left view that the present invention is set on outdoor type epoxy resin mutual inductor；
Figure 10 is the structure top view that the present invention is set on outdoor type epoxy resin mutual inductor.
Specific embodiment
1-10 describes a kind of embodiment of the invention with reference to the accompanying drawing, to carry out clearly and completely to technical solution
Description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In the description present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, it is thus impossible to be interpreted as limitation of the present invention.
Based on the secondary outlet box sealing structure of outdoor type epoxy resin mutual inductor, as shown in Fig. 1-3 and 8-10, including it is outer
Shell 1 and iron core, coil and major insulation in shell 1, and iron core, coil and major insulation are by poured with epoxy resin
It is formed in the interior thereof the mutual inductor pour mass of sealing entity, the 1 lower end one side wall of shell is equipped with secondary terminal box 2 and is open
The secondary terminal box 2 being arranged outwardly uses epoxy resin and mutual inductor pour mass one moulding by casting, the secondary terminal box 2
Threaded hole I 4 is reserved with by mold I 3 on bottom wall and two sidewalls and is cast in the secondary outgoing line end that mutual inductor is poured on body sidewall
Son 5 is located in secondary terminal box 2, and Ge Lantou 8 is adapted to threaded hole I 4 to be screwed and secondary cable is across Ge Lan head 8 and secondary outgoing line
Terminal 5 connects, and the end face quadrangle of 2 open end of secondary terminal box is reserved with threaded hole II 7 by mold II 6 and cover board 9 is logical
It crosses gasket and is adapted to the screw 10 screwed with threaded hole II 7 and seal 2 open end of secondary terminal box；Specifically, as Fig. 4-5 institute
Show, the mold I 3 is the stud of 2 wall thickness of length >=secondary terminal box, is formed on the end face of the mold I 3 convenient for the rotation of mold I 3
Cross recess 11 out, the nominal diameter of external pressure section mates=1.008 × threaded hole I 4 of the mold I 3；Specifically, such as
Shown in Fig. 6-7, the mold II 6 is made of template 12 and cushion block 13, the 12 plate face quadrangle of template be equipped with round cushion block 13 and
Screw hole 14 in 12 plate face of template is arranged concentrically through cushion block 13 and with cushion block 13, and the nominal diameter of the screw hole 14=
The nominal diameter of 1.008 × threaded hole II 7, and screw and screw hole 14 screw after protrude into uncured 2 open end of secondary terminal box
End face in, the circular groove 15 that the cushion block 13 is formed in 2 open end end face of secondary terminal box is for being arranged cover board 9 and secondary connection
Gasket between box 2, and spacer thickness is greater than the thickness of cushion block 13；Specifically, the cover board 9 is made for metal plate and cover board 9
Quadrangle be formed with solidify after the through-hole that is adapted to of 2 open end threaded hole II 7 of secondary terminal box, fixing screws pass through on cover board 9
Through-hole and gasket are adapted to threaded hole II 7 screw after will, the gasket be nitrile rubber plain cushion；Specifically, the Ge Lan head 8 is
The self-seal type structure of included the region between the heart and the diaphragm plate.
In the technical program, secondary terminal box 2 belongs to the component part of mutual inductor pour mass, with mutual inductor pour mass one
Moulding by casting, the prominent mutual inductor pour mass 40mm of secondary terminal box 2, the external dimensions of secondary terminal box 2 are as follows: long 120mm × wide
80mm × high 40mm, and inside dimension is long 100 × high by 60 × depth 40mm, 2 surrounding of secondary terminal box is poured body thickness 10mm, and
Its height is identical as depth, the threaded hole I 4 of each reserved M25 × 1.5 of the left and right sidewall and bottom wall of secondary terminal box 2, to
The nylon Ge Lan head 8 of M25 × 1.5 is installed, Ge Lantou 8 fits through 14~φ of φ 18 and controls cable, plays sealing function, secondary
The metal plate support of the 3mm thickness of cover board 9 of terminal box 2, the sealing of cover board 9, which uses, uses 3mm nitrile rubber flat gasket.This technology
Solution process is simple, at low cost, and the degree of protection of mutual inductor secondary connection box 2 can be guaranteed in IP54 or more.
In the technical program, after secondary terminal box 2 solidifies, successively by mold I 3 and screw respectively from threaded hole I 4 and screw thread
It is screwed out in hole II 7, forms cured epoxy resin screw thread, it is contemplated that the shrinking percentage after epoxy resin cure is 0.8%, therefore phase
The thread size by the screw hole 14 on the external screw thread and mold II 6 on mold I 3 answered is by 100.8% amplification, after solidifying so just
It is good to be applicable in.The adaptation of Ge Lan head 8 is combined on threaded hole I 4 with dimension spanner and is screwed to bottom, gasket is successively then packed into circular groove
In 15, screw 10 is adapted to the threaded hole II 7 on 2 open end of secondary terminal box screw after cover board 9 is fixed in secondary
In terminal box 2.When in-site installation mutual inductor interstar connection, cover board 9 is removed, the pressure cap nut of Ge Lan head 8 is unclamped, secondary cable is passed through
It is connect after Ge Lantou 8 with the secondary outlet terminal of mutual inductor 5, then compresses 8 pressure cap nut of Ge Lan head, finally installed with screw 10
And holddown plate 9, complete sealing installation.
The technical program is using mold I 4 and mold II 6 in the side wall of secondary terminal box 2, bottom wall and the end face of open end
Upper reserved screwed hole I 4 and threaded hole II 7 are realized the sealed connection of Ge Lan head 8 and gland 9 and secondary outlet box 2, are solved
The problem that secondary cable outlet hole and bring leakproofness difference are reserved on secondary outlet box 2, secondary terminal box 2 is poured with mutual inductor
Injection body pours into an integrated entity formula structure, simplifies the production technology of mutual inductor and the manufacturing process of secondary terminal box 2, improves mutual inductance
Ge Lan head 8 is directly installed on the secondary terminal box 2 being integrated with mutual inductor pour mass, it is not necessary in addition by the production efficiency of device
2 shell of metal secondary terminal box is processed, the cost of manufacture of secondary terminal box 2 is reduced, Ge Lantou 8 is the sealing knot of included the region between the heart and the diaphragm plate
Structure ensure that the Ge Lan head 8 not used also can simplify the technology difficulty of mutual inductor production, reduce system in sealing state
Make cost, guarantees the degree of protection of mutual inductor secondary connection box 2 in IP54 or more.
Above-described embodiment, only presently preferred embodiments of the present invention, is not intended to limit the invention practical range, therefore all with this
The equivalence changes that content described in invention claim is done should all be included within scope of the invention as claimed.
Claims (5)
1. based on the secondary outlet box sealing structure of outdoor type epoxy resin mutual inductor, including shell (1) and it is set to shell (1)
Interior iron core, coil and major insulation, and iron core, coil and major insulation are formed in the interior thereof sealing by poured with epoxy resin
The mutual inductor pour mass of entity, it is characterised in that: shell (1) the lower end one side wall is equipped with secondary terminal box (2) and is open
The secondary terminal box (2) being arranged outwardly is using epoxy resin and mutual inductor pour mass one moulding by casting, the secondary terminal box
(2) threaded hole I (4) is reserved with by mold I (3) on bottom wall and two sidewalls and is cast in mutual inductor is poured on body sidewall two
Secondary outlet terminal (5) is located in secondary terminal box (2), and Ge Lantou (8) is adapted to threaded hole I (4) to be screwed and secondary cable passes through
Ge Lantou (8) is connect with secondary outlet terminal (5), and the end face quadrangle of secondary terminal box (2) open end passes through mold II (6)
Threaded hole II (7) and cover board (9) are reserved with by gasket and is adapted to the screw (10) screwed with threaded hole II (7) for secondary connection
The sealing of box (2) open end.
2. the secondary outlet box sealing structure according to claim 1 based on outdoor type epoxy resin mutual inductor, feature
Be: the mold I (3) is the stud of length >=secondary terminal box (2) wall thickness, is formed with and is convenient on the end face of the mold I (3)
The cross recess (11) that mold I (3) screws out, the public affairs of external pressure section mates=1.008 × threaded hole I (4) of the mold I (3)
Claim diameter.
3. the secondary outlet box sealing structure according to claim 1 based on outdoor type epoxy resin mutual inductor, feature
Be: the mold II (6) is made of template (12) and cushion block (13), and template (12) the plate face quadrangle is equipped with round cushion block
(13) and the screw hole (14) in template (12) plate face is arranged concentrically through cushion block (13) and with cushion block (13), the screw hole
(14) nominal diameter of nominal diameter=1.008 × threaded hole II (7), and screw screwed with screw hole (14) after protrude into it is uncured
Secondary terminal box (2) open end end face in, circular groove that the cushion block (13) is formed in secondary terminal box (2) open end end face
(15) gasket for being arranged between cover board (9) and secondary terminal box (2), and spacer thickness is greater than the thickness of cushion block (13).
4. the secondary outlet box sealing structure according to claim 1 based on outdoor type epoxy resin mutual inductor, feature
Be: the cover board (9) be metal plate be made and cover board (9) quadrangle be formed with solidify after secondary terminal box (2) open end spiral shell
The through-hole of pit II (7) adaptation, through-hole and gasket of the fixing screws on cover board (9) are adapted to after screwing with threaded hole II (7)
Will, the gasket is nitrile rubber plain cushion.
5. the secondary outlet box according to claim 1 or 2 or 3 or 4 based on outdoor type epoxy resin mutual inductor seals knot
Structure, it is characterised in that: the Ge Lantou (8) is the self-seal type structure of included the region between the heart and the diaphragm plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910826182.0A CN110428955A (en) | 2019-09-03 | 2019-09-03 | Secondary outlet box sealing structure based on outdoor type epoxy resin mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910826182.0A CN110428955A (en) | 2019-09-03 | 2019-09-03 | Secondary outlet box sealing structure based on outdoor type epoxy resin mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110428955A true CN110428955A (en) | 2019-11-08 |
Family
ID=68418621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910826182.0A Pending CN110428955A (en) | 2019-09-03 | 2019-09-03 | Secondary outlet box sealing structure based on outdoor type epoxy resin mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110428955A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200953283Y (en) * | 2006-09-16 | 2007-09-26 | 江山市三江互感器有限公司 | Outdoor bus type current mutual inductor |
| CN201036152Y (en) * | 2007-04-30 | 2008-03-12 | 大连北方互感器有限公司 | Voltage mutual inductor for looped network cabinet |
| CN201041770Y (en) * | 2007-05-09 | 2008-03-26 | 江山市三江互感器有限公司 | Outdoor bus current mutual inductor |
| CN201440374U (en) * | 2008-12-30 | 2010-04-21 | 大连金业电力设备有限公司 | 10kV outdoor ultra-low frequency oscillation over-current suppression combinational voltage transformer |
| CN102005708A (en) * | 2009-09-03 | 2011-04-06 | 中国石化集团四川维尼纶厂 | Electric igniter wiring device |
| CN210091894U (en) * | 2019-09-03 | 2020-02-18 | 陕西正泰智能电气有限公司 | Secondary outlet box sealing structure based on outdoor epoxy resin mutual inductor |
-
2019
- 2019-09-03 CN CN201910826182.0A patent/CN110428955A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200953283Y (en) * | 2006-09-16 | 2007-09-26 | 江山市三江互感器有限公司 | Outdoor bus type current mutual inductor |
| CN201036152Y (en) * | 2007-04-30 | 2008-03-12 | 大连北方互感器有限公司 | Voltage mutual inductor for looped network cabinet |
| CN201041770Y (en) * | 2007-05-09 | 2008-03-26 | 江山市三江互感器有限公司 | Outdoor bus current mutual inductor |
| CN201440374U (en) * | 2008-12-30 | 2010-04-21 | 大连金业电力设备有限公司 | 10kV outdoor ultra-low frequency oscillation over-current suppression combinational voltage transformer |
| CN102005708A (en) * | 2009-09-03 | 2011-04-06 | 中国石化集团四川维尼纶厂 | Electric igniter wiring device |
| CN210091894U (en) * | 2019-09-03 | 2020-02-18 | 陕西正泰智能电气有限公司 | Secondary outlet box sealing structure based on outdoor epoxy resin mutual inductor |
Non-Patent Citations (1)
| Title |
|---|
| 李建龙;王小清;赵阳武;: "变压器一体式全封闭电流互感器", 变压器, no. 01 * |
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Effective date of registration: 20231218 Address after: Building 3, No. 200 Wenxing Road, Qindu District, Xianyang City, Shaanxi Province, 712000 Applicant after: Shaanxi Zhengtai Transformer Technology Co.,Ltd. Address before: 712000 200, Wen Xing Road, Qin Du science and Technology Industrial Park, Qin Du District, Xianyang, Shaanxi Applicant before: SHAANXI ZHENGTAI INTELLIGENT ELECTRICAL CO.,LTD. |