CN103943343B - Current transformer for ring main unit - Google Patents
Current transformer for ring main unit Download PDFInfo
- Publication number
- CN103943343B CN103943343B CN201310022286.9A CN201310022286A CN103943343B CN 103943343 B CN103943343 B CN 103943343B CN 201310022286 A CN201310022286 A CN 201310022286A CN 103943343 B CN103943343 B CN 103943343B
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- CN
- China
- Prior art keywords
- mutual inductor
- inductor coil
- current transformer
- main unit
- ring main
- Prior art date
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- 239000004020 conductor Substances 0.000 claims abstract description 18
- 230000004308 accommodation Effects 0.000 claims abstract description 11
- 239000003822 epoxy resin Substances 0.000 claims abstract description 10
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
The invention discloses a kind of current transformer for ring main unit, including electric component and body, wherein: this electric component includes mutual inductor coil, mutual inductor coil bearing and Primary Conductor, this mutual inductor coil bearing is loop configuration, and including accommodation space and centre bore, this mutual inductor coil is positioned at this accommodation space, and be coaxially disposed with this mutual inductor coil bearing, further, this Primary Conductor passes this centre bore, is suspended on the axis of this mutual inductor coil bearing；This body uses epoxide resin material composition, and is cast in integratedly outside this electric component.The current transformer for ring main unit of the present invention, not only volume is little, hermetically sealed, and flexible for installation, non-maintaining.
Description
Technical field
The present invention relates to ring main unit accessory, more specifically, be that a kind of electric current for ring main unit is mutual
Sensor.
Background technology
In electrical power distribution system, ring main unit is an important component part of distribution system.And
In ring main unit, current transformer is requisite accessory.The performance of current transformer will be straight
Connect pressure performance, insulating properties, break performance and the operational reliability etc. affecting ring main unit.
Along with electric modernization development, ring main unit apply to more and more urban industry park,
The power supply unit of the departments such as residential quarter, commercial center, industrial and mining establishment and terminal unit, it can
For electric energy distribution, control and electic protection.And for common current transformer, it
By mutually insulated winding, Secondary Winding, iron core and framework, housing, binding post
Deng composition.If being used on ring main unit, then there is the problem that volume is bigger.Further, common
Current transformer does not use seal approach, and installs complexity, needs periodic maintenance.
Accordingly, it would be desirable to design, a kind of volume being specifically designed to ring main unit is little, sealing property is good, no
Need the current transformer of periodic maintenance.
Summary of the invention
The purpose of the present invention, is that solving existing current transformer is applied to during ring main unit be deposited
Disadvantages mentioned above, thus provide a kind of novel current transformer for ring main unit.
The current transformer for ring main unit of the present invention, including electric component and body, wherein:
This electric component includes mutual inductor coil, mutual inductor coil bearing and Primary Conductor, should
Mutual inductor coil bearing is loop configuration, including accommodation space and centre bore, and this mutual inductor coil
It is positioned at this accommodation space, and is coaxially disposed with this mutual inductor coil bearing, and, this is once
Conductor passes this centre bore, is suspended on the axis of this mutual inductor coil bearing；
This body uses epoxide resin material composition, and is cast in integratedly outside this electric component.
Preferably, described electric component farther includes to install nut and grounding nut, wherein,
This installation nut electrically connects with described mutual inductor coil, this grounding nut and described mutual inductor coil
Bearing electrically connects.
Preferably, described body includes the first termination and the second termination, and described Primary Conductor includes
First connection end and the second connection end, wherein,
This first termination is female joint, and includes that receives a space, and this first connection end houses
In this reception space；
This second termination is male joint, and includes that plugs a portion, and this second connection end is embedded in
This plugs in portion.
Preferably, described mutual inductor coil bearing includes urceolus and inner core, described transformer line
Circle is supported by described inner core, in the described accommodation space between described urceolus and described inner core.
Preferably, described mutual inductor coil bearing has a closed side and an open sides, should
Closed side is provided with the annular panel for connecting described urceolus and described inner core, and described mutually
Sensor coil is extended by this open sides and is set on described inner core.
Preferably, the first termination outer peripheral edge of described body is provided with and connects for clamping insulation
The groove of part.
Preferably, the second termination outer peripheral edge of described body is provided with seal groove.
The current transformer for ring main unit of the present invention, uses epoxide resin vacuum cast, from
And reached the purpose that volume is little, hermetically sealed, flexible for installation, non-maintaining.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the current transformer for ring main unit of the present invention, in the middle part of it
Divide and be opened；
Fig. 2 is the sectional view of the current transformer for ring main unit in Fig. 1；
Fig. 3 is Fig. 1, the amplification of the first connection end of the current transformer for ring main unit in 2
Sectional view；
Fig. 4 is Fig. 1, the amplification of the second connection end of the current transformer for ring main unit in 2
Sectional view.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, mutual to the electric current for ring main unit of the present invention
The structure composition of sensor and operation principle are described in detail.
As it is shown in figure 1, be the axonometric chart of the current transformer for ring main unit of the present invention, for
More clearly describing the structure of the current transformer of the present invention, the part in Fig. 1 is opened；
As in figure 2 it is shown, be the sectional view of the current transformer for ring main unit of the present invention in Fig. 1,
This sectional view can clearly represent the internal structure of current transformer.As shown in Figure 1, 2, this
The bright current transformer for ring main unit, including electric component 100 and body 200.More specifically
Ground, electric component 100 includes mutual inductor coil 110, mutual inductor coil bearing 120 and once
Conductor 130.Mutual inductor coil bearing 120 is loop configuration, including accommodation space and centre bore,
In the current transformer of the present invention, mutual inductor coil 110 is positioned at this accommodation space, and with
Mutual inductor coil bearing 120 is coaxially disposed, and, Primary Conductor 130 is through centre bore, outstanding
It is located on the axis of mutual inductor coil bearing 120.
Further, especially, in the current transformer of the present invention, body 200 uses asphalt mixtures modified by epoxy resin
Fat material forms, and it is outside to be cast in electric component 100 integratedly.Thus, asphalt mixtures modified by epoxy resin is passed through
The cast of fat material, can be combined into epoxy resin and the electric component 100 as body 200
One entirety.Further, by the cast of body 200, so that Primary Conductor 130 is relative
Remaining to hang in mutual inductor coil bearing 120 and set state, i.e. Primary Conductor 130 is through transformer
The centre bore of coil support 120, but discord mutual inductor coil bearing 120 contacts.By this
The cast of body 200, the mutual inductor coil 110 in electric component 100, mutual inductor coil bearing
120 and Primary Conductor 130 be embedded in epoxy resin within and formed one.
Further, with continued reference to Fig. 1,2, electric component 100 farther include install nut
140 and grounding nut 150, wherein, nut 140 is installed and electrically connects with mutual inductor coil 110,
Grounding nut 150 electrically connects with mutual inductor coil bearing 120.With other of electric component 100
Ingredient is identical, installs nut 140 and grounding nut 150 is also embedded in body 200,
And for connecting with external component, fixing.
More specifically, with reference to Fig. 1,2, and further combined with Fig. 3,4, body 200 includes the
One termination 210 and the second termination 220, accordingly, Primary Conductor 130 includes the first connection end
131 and second connect end 132.Wherein, in the present invention, the first termination 210 is female joint,
And including that receives a space 211, the first connection end 131 of Primary Conductor 130 is placed in reception
In space 211；Second termination 220 is male joint, and includes that plugs a portion 221, once leads
Second connection 132 ends of body 130 are embedded in the portion of plugging 221.
First termination 210 of body 200 is female joint, and therefore it can right with external equipment
The male joint answered is connected, and equally, the second termination 220 of body 200 can set with outside
Standby corresponding female street corner is connected.First connection end 131 and second of Primary Conductor 130
Connect end 132 for being electrically connected with external equipment respectively.
Easy to understand, the first termination 210 of body 200 can also be for male joint, now, and this
Second termination 220 of body 200 is accordingly for female joint.
Referring specifically to Fig. 2, when mounted, mutual inductor coil 110 can use the connection side of plug-in
Formula is installed in mutual inductor coil bearing 120.Specifically, with reference to Fig. 2, mutual inductor coil bearing
120 include urceolus 121 and inner core 122, and mutual inductor coil 110 is supported by inner core 122, position
In accommodation space between urceolus 121 and inner core 122.More specifically, mutual inductor coil props up
Seat 120 has a closed side and an open sides, and wherein, closed side is provided with for connecting
Urceolus 121 and the annular panel 123 of inner core 122, and mutual inductor coil 110 prolongs by open sides
Stretch and be set on inner core 121.Thus, mutual inductor coil 110 can be realized and enter from open sides,
It is set on inner core 121 with pluggable form, and the honor being contained in urceolus and inner core is put in space.
In conjunction with Fig. 2,3, the first termination 210 outer peripheral edge of body 200 is provided with for clamping
The groove 212 of exterior insulation connector.This groove 212 is for clamping exterior insulation connector (example
Such as clip etc.), thus held tightly, improve insulating properties.
It addition, combine Fig. 2,4, the second termination 220 outer peripheral edge of body 200 is provided with close
Sealing groove 222.For housing sealing ring, to play the effect of sealing.
In conjunction with Fig. 1,2, when the current transformer of the present invention makes, first, can first will be mutual
The secondary lead-out wire of sensor coil 110 and installation nut 140 electrically connect, and utilize screw in compression,
It is then fitted in mutual inductor coil bearing 120, and is put in mould with Primary Conductor 130.
By pouring technology, epoxide resin material is used to carry out moulding by casting, cured as body
After, form final products.
When the current transformer of the present invention is installed on ring main unit, first, available installing plate
With Assembly part, current transformer is put on the position that ring main unit is pre-designed；Then, will once
Two connection ends of conductor dock with external equipment and install and put in place, and insulated connecting piece (clip)
The two of body terminations are fixed；Finally, the installation of mutual inductor coil secondary lead-out wire will be connected
Nut electrically connects with external equipment, simultaneously by grounding nut ground connection.
In sum, the current transformer for ring main unit of the present invention, use epoxy resin true
Empty cast, has features such as volume is little, hermetically sealed, flexible for installation, non-maintaining, thus accordingly
Achieve ring main unit all insulation, hermetically sealed, volume is little, compact conformation, flexible for installation, behaviour
Make the major functions such as safety, promote the progress of power system power supply technology.
Claims (5)
1. the current transformer for ring main unit, it is characterised in that include electric component and
Body, wherein:
This electric component includes mutual inductor coil, mutual inductor coil bearing and Primary Conductor, should
Mutual inductor coil bearing is loop configuration, including accommodation space and centre bore, and this mutual inductor coil
It is positioned at this accommodation space, and is coaxially disposed with this mutual inductor coil bearing, and, this is once
Conductor passes this centre bore, is suspended on the axis of this mutual inductor coil bearing；
This body uses epoxide resin material composition, and is cast in outside this electric component integratedly,
Wherein,
Described mutual inductor coil bearing includes urceolus and inner core, and described mutual inductor coil is by described
Inner core supports, in the described accommodation space between described urceolus and described inner core,
Described mutual inductor coil bearing has a closed side and an open sides, and this closed side sets
It is equipped with the annular panel for connecting described urceolus and described inner core, and described mutual inductor coil
Extended by this open sides and be set on described inner core.
Current transformer for ring main unit the most according to claim 1, it is characterised in that
Described electric component farther includes to install nut and grounding nut, wherein, this installation nut
Electrically connecting with described mutual inductor coil, this grounding nut electrically connects with described mutual inductor coil bearing.
Current transformer for ring main unit the most according to claim 1, it is characterised in that
Described body includes the first termination and the second termination, described Primary Conductor include the first connection end and
Second connection end, wherein,
This first termination is female joint, and includes that receives a space, and this first connection end houses
In this reception space；
This second termination is male joint, and includes that plugs a portion, and this second connection end is embedded in
This plugs in portion.
Current transformer for ring main unit the most according to claim 3, it is characterised in that
First termination outer peripheral edge of described body is provided with the groove for clamping insulated connecting piece.
Current transformer for ring main unit the most according to claim 3, it is characterised in that
Second termination outer peripheral edge of described body is provided with seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022286.9A CN103943343B (en) | 2013-01-22 | 2013-01-22 | Current transformer for ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022286.9A CN103943343B (en) | 2013-01-22 | 2013-01-22 | Current transformer for ring main unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103943343A CN103943343A (en) | 2014-07-23 |
| CN103943343B true CN103943343B (en) | 2016-08-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310022286.9A Active CN103943343B (en) | 2013-01-22 | 2013-01-22 | Current transformer for ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103943343B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841738A (en) * | 2016-08-24 | 2017-06-13 | 国网山东省电力公司高唐县供电公司 | Ready-package blade type low-voltage current mutual inductor |
| CN107039896A (en) * | 2017-05-31 | 2017-08-11 | 天津市三源电力设备制造有限公司 | A kind of high-acruracy survey ring main unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2607649Y (en) * | 2003-04-29 | 2004-03-24 | 广东省四会市互感器厂 | Once outlet elongation type current transformer |
| CN101069251A (en) * | 2004-12-03 | 2007-11-07 | 真空融化两合公司 | Inductor component and manufacturing method thereof |
| CN201780863U (en) * | 2010-07-22 | 2011-03-30 | 广西银河迪康电气有限公司 | Solid insulation current transformer |
| CN102034599A (en) * | 2009-09-28 | 2011-04-27 | 大连互感器有限公司 | Dry-type current transformer |
| CN203118754U (en) * | 2013-01-22 | 2013-08-07 | 上海雷博司电气股份有限公司 | Current mutual inductor for ring main unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3982973B2 (en) * | 2000-03-07 | 2007-09-26 | 東光電気株式会社 | Current transformer |
-
2013
- 2013-01-22 CN CN201310022286.9A patent/CN103943343B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2607649Y (en) * | 2003-04-29 | 2004-03-24 | 广东省四会市互感器厂 | Once outlet elongation type current transformer |
| CN101069251A (en) * | 2004-12-03 | 2007-11-07 | 真空融化两合公司 | Inductor component and manufacturing method thereof |
| CN102034599A (en) * | 2009-09-28 | 2011-04-27 | 大连互感器有限公司 | Dry-type current transformer |
| CN201780863U (en) * | 2010-07-22 | 2011-03-30 | 广西银河迪康电气有限公司 | Solid insulation current transformer |
| CN203118754U (en) * | 2013-01-22 | 2013-08-07 | 上海雷博司电气股份有限公司 | Current mutual inductor for ring main unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103943343A (en) | 2014-07-23 |
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