CN109360712A - A kind of transformer external current mutual inductor and its application method - Google Patents
A kind of transformer external current mutual inductor and its application method Download PDFInfo
- Publication number
- CN109360712A CN109360712A CN201811421166.5A CN201811421166A CN109360712A CN 109360712 A CN109360712 A CN 109360712A CN 201811421166 A CN201811421166 A CN 201811421166A CN 109360712 A CN109360712 A CN 109360712A
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- transformer
- mutual inductor
- epoxy resin
- wiring terminals
- secondary wiring
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- 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
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- 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
-
- 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
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The present invention relates to a kind of transformer external current mutual inductor and its application methods, belong to transformer transformer technical field.Technical solution is: secondary winding (1), epoxy resin sheath (2), secondary wiring terminals box (5) and secondary wiring terminals (4) are integrally formed by poured with epoxy resin, constitute cyclic currents mutual inductor；The cyclic currents mutual inductor is set in the bottom of bushing shell for transformer (6), is fixed on power transformer enclosure (7) upper surface；The secondary winding (1) of cyclic currents mutual inductor is matched with the conducting rod in bushing shell for transformer (6), and the conducting rod in bushing shell for transformer (6) is as Primary Conductor.The present invention increases cyclic currents mutual inductor in the case where not disassembling power transformer enclosure, through outside to replace current transformer of problems in power transformer enclosure, and cyclic currents mutual inductor is external, oil-free structure, and intensity is big, good insulation preformance；It is easy for installation, performance is stable and non-maintaining.
Description
Technical field
The present invention relates to a kind of transformer external current mutual inductor and its application methods, belong to transformer mutual inductor
Technical field.
Background technique
Currently, transformer is assemblied in power transformer enclosure with bushing current transformer, soak in the oil, if increasing seat
There are problem, maintenance, replacements also very big difficulty for interior current transformer；After transformer station high-voltage side bus, if you need to increase in seat
Increase bushing current transformer, need to disassemble power transformer enclosure, operation difficulty is big, is difficult to realize.
Summary of the invention
The object of the present invention is to provide a kind of transformer external current mutual inductor and its application methods, are not disassembling change
In the case that depressor increases seat, cyclic currents mutual inductor is increased to replace electricity of problems in power transformer enclosure by outside
Current transformer, and current transformer quantity can be increased according to actual needs, solve the above problem existing for background technique.
The technical scheme is that
A kind of transformer external current mutual inductor includes secondary winding, epoxy resin sheath, secondary wiring terminals box and two
Secondary connecting terminal；The secondary winding is generally cyclic annular, and outside is equipped with epoxy resin sheath；Secondary winding and secondary wiring terminals
Connection, secondary wiring terminals be arranged in secondary wiring terminals box, secondary wiring terminals box be epoxy resin box body, it is secondary around
Group, epoxy resin sheath, secondary wiring terminals box and secondary wiring terminals are integrally formed by poured with epoxy resin, are constituted cyclic annular
Current transformer；The cyclic currents mutual inductor is set in the bottom of bushing shell for transformer, is fixed on power transformer enclosure upper surface
On；The secondary winding of cyclic currents mutual inductor is matched with the conducting rod in bushing shell for transformer, and the conducting rod in bushing shell for transformer is made
For Primary Conductor.
The secondary winding quantity is more than one, and be arranged above and below arrangement, and secondary winding quantity can phase according to actual needs
It should increase and decrease.
Fixed installation inserts is equipped in the epoxy resin sheath, fixed installation inserts passes through with epoxy resin sheath
Poured with epoxy resin is integrally formed, and cyclic currents mutual inductor is fixed on power transformer enclosure by fixed installation with inserts.Example
Such as: fixed installation is screw rod with inserts, and power transformer enclosure is equipped with mounting hole, is fastened by nut by cyclic currents mutual inductor
It is fixed on power transformer enclosure.
The secondary wiring terminals box is located at epoxy resin sheath outer surface, inside sets secondary wiring terminals；Secondary connection end
The side wall of sub- box is equipped with entrance hole, the nameplate of the surface mount product of secondary wiring terminals box.
The epoxy resin sheath, the insulation thickness ceiling voltage transformer induced with cyclic currents match.
A kind of application method of transformer external current mutual inductor, comprises the following steps:
Secondary winding, fixed installation inserts and secondary wiring terminals box and secondary wiring terminals are put in a mold, poured into
Epoxy resin forms cyclic currents mutual inductor after solidification；The secondary winding is generally cyclic annular, and outside is epoxy resin sheath；
Secondary wiring terminals box is epoxy resin box body, and secondary winding is fixedly mounted and uses inserts, secondary wiring terminals box and secondary connection
Terminal is integrally formed by poured with epoxy resin；
Transformer in use, if there are problems for the current transformer in power transformer enclosure, it is mutual to need replacing electric current
The cyclic currents mutual inductor, is set in the bottom of bushing shell for transformer by sensor, is fixed on transformation with inserts by fixed installation
Device increases on seat upper surface；The secondary winding of cyclic currents mutual inductor is matched with the conducting rod in bushing shell for transformer, transformer set
Conducting rod in pipe is as Primary Conductor；
It is connect by the secondary wiring terminals in secondary wiring terminals box with current data line, guarantees that transformer operates normally, no
It needs to disassemble power transformer enclosure.
If needing to increase the quantity of current transformer in the operation of the transformer, the number of secondary winding is determined as needed
Amount, be arranged above and below arrangement, is integrally formed by poured with epoxy resin.
The entire cyclic currents mutual inductor integral type pouring molding of the present invention, secondary winding quantity can be corresponding according to actual needs
Increase and decrease；Inserts, which is fixedly mounted, accordingly to be adjusted according to actual installation size；Casting epoxy resin type can be according to use environment
Adjustment proportion and model.
The positive effect of the present invention: in the case where not disassembling power transformer enclosure, it is mutual that cyclic currents is increased by outside
Sensor can increase current transformer to replace current transformer of problems in power transformer enclosure according to actual needs
Quantity, cyclic currents mutual inductor is external, oil-free structure；Epoxy resin integral type pouring molding, intensity is big, good insulation preformance；Peace
Dress is convenient, performance is stable and non-maintaining.
Detailed description of the invention
Fig. 1 is schematic cross-sectional view of the present invention；
Fig. 2 is schematic view of the front view of the present invention；
Fig. 3 is scheme of installation of the present invention in bushing shell for transformer position；
In figure: secondary winding 1, epoxy resin sheath 2 are fixedly mounted and use inserts 3, secondary wiring terminals 4, secondary wiring terminals box
5, bushing shell for transformer 6, power transformer enclosure 7, entrance hole 8, nameplate 9, raising seat ventilation union 10.
Specific embodiment
Below in conjunction with attached drawing, the invention is further illustrated by the examples.
A kind of transformer external current mutual inductor includes secondary winding 1, epoxy resin sheath 2, secondary wiring terminals
Box 5 and secondary wiring terminals 4；The secondary winding 1 is generally cyclic annular, and outside is equipped with epoxy resin sheath 2；Secondary winding 1 with
Secondary wiring terminals 4 connect, and secondary wiring terminals 4 are arranged in secondary wiring terminals box 5, and secondary wiring terminals box 5 is epoxy
Resin box body, secondary winding 1, epoxy resin sheath 2, secondary wiring terminals box 5 and secondary wiring terminals 4 are poured by epoxy resin
Note is integrally formed, and constitutes cyclic currents mutual inductor；The cyclic currents mutual inductor is set in the bottom of bushing shell for transformer 6, fixed
On 7 upper surface of power transformer enclosure；The secondary winding 1 of cyclic currents mutual inductor is matched with the conducting rod in bushing shell for transformer 6,
Conducting rod in bushing shell for transformer 6 is as Primary Conductor.
1 quantity of secondary winding is more than one, and be arranged above and below arrangement, and secondary winding quantity can phase according to actual needs
It should increase and decrease.
It is equipped with fixed installation inserts 3 in the epoxy resin sheath 2, is fixedly mounted with inserts 3 and epoxy resin sheath 2
It is integrally formed by poured with epoxy resin, cyclic currents mutual inductor is fixed on power transformer enclosure 7 by fixed installation inserts 3
On.Such as: being fixedly mounted with inserts 3 is screw rod, and power transformer enclosure 7 is equipped with mounting hole, is fastened by nut by cyclic annular electricity
Current transformer is fixed on power transformer enclosure 7.
The secondary wiring terminals box 5 is located at 2 outer surface of epoxy resin sheath, inside sets secondary wiring terminals 4；Secondary connection
The side wall of terminal board 5 is equipped with entrance hole 8, the nameplate 9 of the surface mount product of secondary wiring terminals box 5.
The epoxy resin sheath, the insulation thickness ceiling voltage transformer induced with cyclic currents match.
A kind of application method of transformer external current mutual inductor, comprises the following steps:
Secondary winding 1, fixed installation inserts 3 and secondary wiring terminals box 5 and secondary wiring terminals 4 are put in a mold,
Epoxy resin is poured into, forms cyclic currents mutual inductor after solidification；The secondary winding 1 is generally cyclic annular, and outside is epoxy resin
Sheath 2；Secondary wiring terminals box 5 is epoxy resin box body, and secondary winding 1 is fixedly mounted and uses inserts 3, secondary wiring terminals box 5
It is integrally formed with secondary wiring terminals 4 by poured with epoxy resin；
Transformer in use, if there are problems for the current transformer in power transformer enclosure, it is mutual to need replacing electric current
The cyclic currents mutual inductor, is set in the bottom of bushing shell for transformer 6 by sensor, is fixed on change by fixed installation inserts 3
Depressor increases on 7 upper surface of seat；The secondary winding 1 of cyclic currents mutual inductor is matched with the conducting rod in bushing shell for transformer 6, transformation
Conducting rod in device casing 6 is as Primary Conductor；
It is connect by the secondary wiring terminals 4 in secondary wiring terminals box 5 with current data line, guarantees that transformer operates normally,
Dismantling power transformer enclosure is not needed.
If needing to increase the quantity of current transformer in the operation of the transformer, secondary winding 1 is determined as needed
Quantity, be arranged above and below arrangement, is integrally formed by poured with epoxy resin.
The entire cyclic currents mutual inductor integral type pouring molding of the present invention, secondary winding quantity can be corresponding according to actual needs
Increase and decrease；Inserts, which is fixedly mounted, accordingly to be adjusted according to actual installation size；Casting epoxy resin type can be according to use environment
Adjustment proportion and model.
In embodiment, the quantity of secondary winding 1 is two.Be arranged above and below arrangement, is integrally formed by poured with epoxy resin.
The bottom of bushing shell for transformer 6 is arranged in cyclic currents mutual inductor, is fixed on power transformer enclosure 7 by fixed installation inserts 3
On upper surface, above the raising seat ventilation union 10 of power transformer enclosure 7.
Claims (7)
1. a kind of transformer external current mutual inductor, it is characterised in that: include secondary winding (1), epoxy resin sheath
(2), secondary wiring terminals box (5) and secondary wiring terminals (4)；The secondary winding (1) is generally cyclic annular, and outside is equipped with epoxy
Resin sheath (2)；Secondary winding (1) is connect with secondary wiring terminals (4), and secondary wiring terminals (4) are arranged at secondary connection end
In sub- box (5), (5 be epoxy resin box body, secondary winding (1), epoxy resin sheath (2), secondary connection to secondary wiring terminals box
Terminal board (5) and secondary wiring terminals (4) are integrally formed by poured with epoxy resin, constitute cyclic currents mutual inductor；The ring
Shape current transformer is set in the bottom of bushing shell for transformer (6), is fixed on power transformer enclosure (7) upper surface；Cyclic currents
The secondary winding (1) of mutual inductor is matched with the conducting rod in bushing shell for transformer (6), the conducting rod conduct in bushing shell for transformer (6)
Primary Conductor.
2. a kind of transformer external current mutual inductor according to claim 1, it is characterised in that: the secondary winding
(1) quantity is more than one, and be arranged above and below arrangement.
3. according to claim 1 or a kind of transformer external current mutual inductor, it is characterised in that: the asphalt mixtures modified by epoxy resin
Fixed installation is equipped in rouge sheath (2) with inserts (3), fixed installation passes through asphalt mixtures modified by epoxy resin with inserts (3) and epoxy resin sheath (2)
Rouge casting is integrally formed, and cyclic currents mutual inductor is fixed on power transformer enclosure (7) by fixed installation with inserts (3).
4. a kind of transformer external current mutual inductor according to claim 1 or 2, it is characterised in that: described secondary
Connecting terminal box (5) is located at epoxy resin sheath (2) outer surface, inside sets secondary wiring terminals (4)；Secondary wiring terminals box (5)
Side wall be equipped with entrance hole (8), the nameplate (9) of the surface mount product of secondary wiring terminals box (5).
5. a kind of transformer external current mutual inductor according to claim 1 or 2, it is characterised in that: the epoxy
Resin sheath, the insulation thickness ceiling voltage transformer induced with cyclic currents match.
6. a kind of application method of transformer external current mutual inductor, characterized by comprising the steps of:
Secondary winding (1), fixed installation inserts (3) and secondary wiring terminals box (5) and secondary wiring terminals (4) are placed in
In mold, epoxy resin is poured into, forms cyclic currents mutual inductor after solidification；The secondary winding (1) is generally cyclic annular, and outside is
Epoxy resin sheath (2)；Secondary wiring terminals box (5) is epoxy resin box body, and inserts is used in secondary winding (1), fixed installation
(3), secondary wiring terminals box (5) and secondary wiring terminals (4) are integrally formed by poured with epoxy resin；
Transformer in use, if there are problems for the current transformer in power transformer enclosure, it is mutual to need replacing electric current
The cyclic currents mutual inductor is set in the bottom of bushing shell for transformer (6) by sensor, fixed with inserts (3) by fixed installation
On power transformer enclosure (7) upper surface；The secondary winding (1) and the conduction in bushing shell for transformer (6) of cyclic currents mutual inductor
Bar matches, and the conducting rod in bushing shell for transformer (6) is as Primary Conductor；
It is connect by the secondary wiring terminals (4) in secondary wiring terminals box (5) with current data line, guarantees that transformer is normally transported
Row does not need dismantling power transformer enclosure.
7. a kind of application method of transformer external current mutual inductor according to claim 6, it is characterised in that: such as
It needs to increase the quantity of current transformer in fruit the operation of the transformer, determines the quantity of secondary winding (1) as needed, up and down
Arranged is integrally formed by poured with epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811421166.5A CN109360712B (en) | 2018-11-27 | 2018-11-27 | External current transformer for transformer and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811421166.5A CN109360712B (en) | 2018-11-27 | 2018-11-27 | External current transformer for transformer and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109360712A true CN109360712A (en) | 2019-02-19 |
| CN109360712B CN109360712B (en) | 2023-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811421166.5A Active CN109360712B (en) | 2018-11-27 | 2018-11-27 | External current transformer for transformer and application method thereof |
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Citations (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5363079A (en) * | 1991-03-15 | 1994-11-08 | Square D Company | Protective snap-together enclosure for current transformers |
| CN2484627Y (en) * | 2001-07-26 | 2002-04-03 | 张雅坤 | High-precision current transformer of dry 220KV grade and that below |
| US20030098765A1 (en) * | 2001-11-27 | 2003-05-29 | Nobuyuki Kakuda | Fixing device of current transformer |
| CN201036161Y (en) * | 2007-01-22 | 2008-03-12 | 辽宁实田电工仪器有限公司 | Three-phase pouring type combined transformer |
| CN201234132Y (en) * | 2008-07-30 | 2009-05-06 | 衢州日新电气有限公司 | Neutral point protection apparatus for 110kV-220kV transformer |
| CN101814400A (en) * | 2010-03-22 | 2010-08-25 | 郑逸扬 | Automatic high-voltage circuit breaker |
| CN102005293A (en) * | 2010-11-09 | 2011-04-06 | 大连华亿电力电器有限公司 | Current transformer |
| CN202110940U (en) * | 2011-06-17 | 2012-01-11 | 浙江华建电气有限公司 | Combined transformer |
| CN102623162A (en) * | 2012-05-07 | 2012-08-01 | 安徽互感器有限公司 | Outdoor dry current transformer of 35kV and below |
| CN102945745A (en) * | 2012-11-21 | 2013-02-27 | 保定天威互感器有限公司 | Standard current transformer of composite error |
| CN202796415U (en) * | 2012-07-30 | 2013-03-13 | 衢州日新电气有限公司 | Straight-through current transformer |
| US20130120882A1 (en) * | 2011-11-15 | 2013-05-16 | Christopher Love | Ultra-low sensitivity ground fault circuit interrupter |
| CN103500635A (en) * | 2013-09-23 | 2014-01-08 | 保定天威互感器有限公司 | Bushing current transformer |
| CN203617118U (en) * | 2013-12-26 | 2014-05-28 | 保定天威互感器有限公司 | Oil-immersed inverted current transformer |
| CN203617119U (en) * | 2013-12-26 | 2014-05-28 | 保定天威互感器有限公司 | External current transformer for neutral point of transformer |
| CN203746636U (en) * | 2014-03-19 | 2014-07-30 | 中骏电气（泉州）有限公司 | Novel power transformer structure with sleeve type current transformer |
| CN204117833U (en) * | 2014-07-24 | 2015-01-21 | 大连新安越电力设备有限公司 | A kind of outdoor individual event metering current voltage combination transformer |
| CN204117827U (en) * | 2014-07-24 | 2015-01-21 | 大连新安越电力设备有限公司 | A kind of outdoor high-capacity low office discharge stream instrument transformer |
| CN205670479U (en) * | 2016-06-14 | 2016-11-02 | 湖北大二互科技股份有限公司 | The combination transformer that a kind of high pressure plug formula connects |
| CN205751750U (en) * | 2016-02-02 | 2016-11-30 | 杨慧 | A kind of distribution transformer |
| CN106384658A (en) * | 2016-11-18 | 2017-02-08 | 保定天威互感器有限公司 | Oil-immersed inversion type current transformer major insulation wrapping connection structure and method |
| CN106384659A (en) * | 2016-11-18 | 2017-02-08 | 保定天威互感器有限公司 | Current transformer with insulator outlet structure and manufacturing method thereof |
| CN206163262U (en) * | 2016-11-16 | 2017-05-10 | 天津光信光电科技有限公司 | Current transformer who reports to police and cool down |
| CN107946026A (en) * | 2017-11-21 | 2018-04-20 | 保定天威互感器有限公司 | A kind of transformer external current mutual inductor |
| CN108074717A (en) * | 2016-11-16 | 2018-05-25 | 天津光信光电科技有限公司 | A kind of current transformer for cooling of alarming |
| CN208903789U (en) * | 2018-11-27 | 2019-05-24 | 保定天威互感器有限公司 | A kind of transformer external current mutual inductor |
-
2018
- 2018-11-27 CN CN201811421166.5A patent/CN109360712B/en active Active
Patent Citations (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5363079A (en) * | 1991-03-15 | 1994-11-08 | Square D Company | Protective snap-together enclosure for current transformers |
| CN2484627Y (en) * | 2001-07-26 | 2002-04-03 | 张雅坤 | High-precision current transformer of dry 220KV grade and that below |
| US20030098765A1 (en) * | 2001-11-27 | 2003-05-29 | Nobuyuki Kakuda | Fixing device of current transformer |
| CN201036161Y (en) * | 2007-01-22 | 2008-03-12 | 辽宁实田电工仪器有限公司 | Three-phase pouring type combined transformer |
| CN201234132Y (en) * | 2008-07-30 | 2009-05-06 | 衢州日新电气有限公司 | Neutral point protection apparatus for 110kV-220kV transformer |
| CN101814400A (en) * | 2010-03-22 | 2010-08-25 | 郑逸扬 | Automatic high-voltage circuit breaker |
| CN102005293A (en) * | 2010-11-09 | 2011-04-06 | 大连华亿电力电器有限公司 | Current transformer |
| CN202110940U (en) * | 2011-06-17 | 2012-01-11 | 浙江华建电气有限公司 | Combined transformer |
| US20130120882A1 (en) * | 2011-11-15 | 2013-05-16 | Christopher Love | Ultra-low sensitivity ground fault circuit interrupter |
| CN102623162A (en) * | 2012-05-07 | 2012-08-01 | 安徽互感器有限公司 | Outdoor dry current transformer of 35kV and below |
| CN202796415U (en) * | 2012-07-30 | 2013-03-13 | 衢州日新电气有限公司 | Straight-through current transformer |
| CN102945745A (en) * | 2012-11-21 | 2013-02-27 | 保定天威互感器有限公司 | Standard current transformer of composite error |
| CN103500635A (en) * | 2013-09-23 | 2014-01-08 | 保定天威互感器有限公司 | Bushing current transformer |
| CN203617118U (en) * | 2013-12-26 | 2014-05-28 | 保定天威互感器有限公司 | Oil-immersed inverted current transformer |
| CN203617119U (en) * | 2013-12-26 | 2014-05-28 | 保定天威互感器有限公司 | External current transformer for neutral point of transformer |
| CN203746636U (en) * | 2014-03-19 | 2014-07-30 | 中骏电气（泉州）有限公司 | Novel power transformer structure with sleeve type current transformer |
| CN204117833U (en) * | 2014-07-24 | 2015-01-21 | 大连新安越电力设备有限公司 | A kind of outdoor individual event metering current voltage combination transformer |
| CN204117827U (en) * | 2014-07-24 | 2015-01-21 | 大连新安越电力设备有限公司 | A kind of outdoor high-capacity low office discharge stream instrument transformer |
| CN205751750U (en) * | 2016-02-02 | 2016-11-30 | 杨慧 | A kind of distribution transformer |
| CN205670479U (en) * | 2016-06-14 | 2016-11-02 | 湖北大二互科技股份有限公司 | The combination transformer that a kind of high pressure plug formula connects |
| CN206163262U (en) * | 2016-11-16 | 2017-05-10 | 天津光信光电科技有限公司 | Current transformer who reports to police and cool down |
| CN108074717A (en) * | 2016-11-16 | 2018-05-25 | 天津光信光电科技有限公司 | A kind of current transformer for cooling of alarming |
| CN106384658A (en) * | 2016-11-18 | 2017-02-08 | 保定天威互感器有限公司 | Oil-immersed inversion type current transformer major insulation wrapping connection structure and method |
| CN106384659A (en) * | 2016-11-18 | 2017-02-08 | 保定天威互感器有限公司 | Current transformer with insulator outlet structure and manufacturing method thereof |
| CN107946026A (en) * | 2017-11-21 | 2018-04-20 | 保定天威互感器有限公司 | A kind of transformer external current mutual inductor |
| CN208903789U (en) * | 2018-11-27 | 2019-05-24 | 保定天威互感器有限公司 | A kind of transformer external current mutual inductor |
Non-Patent Citations (1)
| Title |
|---|
| 何清;王伟;陈元;王瑞珍;罗维;刘铁;李佳: "一起220 kV油浸式电流互感器故障分析", 《电力电容器与无功补偿》, pages 111 - 115 * |
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| Publication number | Publication date |
|---|---|
| CN109360712B (en) | 2023-10-17 |
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