CN206460865U - A kind of Integral three-phase current transformer - Google Patents
A kind of Integral three-phase current transformer Download PDFInfo
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- CN206460865U CN206460865U CN201720180011.1U CN201720180011U CN206460865U CN 206460865 U CN206460865 U CN 206460865U CN 201720180011 U CN201720180011 U CN 201720180011U CN 206460865 U CN206460865 U CN 206460865U
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Abstract
The utility model provides a kind of Integral three-phase current transformer, the main body constituted including housing and the epoxy resin mixed glue being cast in the housing, it is provided with the main body and fixed and insulation three current transformers is poured into a mould by the epoxy resin mixed glue, it is characterized in that, three current transformers are into " product " word structural arrangement, the device body of each current transformer includes a first winding and two secondary windings, a support that two secondary windings are tied up to lifting is provided with the secondary winding side of each current transformer, the two ends of the first winding are connected to the first winding busbar circulated for primary current, the other end of the first winding busbar is connected with an outgoing line busbar for being connected with power circuit, the first winding busbar and an outgoing line busbar are arranged at outside housing, the utility model is while product small form factor requirements are met, also the requirement of electric measurement and relay protection is met, it is adapted to mount in nuclear power switch cabinet.
Description
Technical field
The utility model is related to current transformer technical field, and in particular to a kind of Integral three-phase current transformer.
Background technology
The economic construction of current China is in the high speed stable development stage, and national life level is stepped up, energy demand
Increasingly increase, environmental problem is increasingly serious, the whole nation has been started using cleaning, the efficient, climax of economical energy resources now.Nuclear power
It is the effective way of power industry pollutant emission reduction as a kind of clean energy resource of technology maturation, is to slow down Global Greenhouse Effect
Effective measures, be also one of energy of sustainable development.Nuclear energy will be used widely in China's energy in, according to city
The skill of field demand and Tianshui Changcheng Switchgear Factory's nuclear power current transformer in 1E grades of i-AY6-7.2 medium voltage switchgear equipments (F-C cabinets)
Art requirement, with the minimizing of power supply unit, intellectuality, low-loss, low cost, to the performance and quality requirement of current transformer
Also more and more higher.
Current transformer is commonly applied to the monitoring and measurement of load current, but general general threephase current transformer is
Three single-phase current transformer in-lines are arranged, the volume existed is big, the technical problem such as assembling inconvenience, it is impossible to be installed on
In nuclear power switch cabinet.
Utility model content
The application is by providing a kind of Integral three-phase current transformer, to solve existing threephase current transformer volume
Greatly, the technical problem of assembling inconvenience etc., it is adaptable to the nuclear power switch cabinet strict to volume requirement.
In order to solve the above technical problems, the application is achieved using following technical scheme：
A kind of Integral three-phase current transformer, including housing and the epoxy resin mixed glue structure being cast in the housing
Into main body, be provided with the main body and three Current Mutual Inductances that are fixed and insulating poured into a mould by the epoxy resin mixed glue
Device, it is it is critical that three current transformers are into " product " word structural arrangement, and the device body of each current transformer includes one
Individual first winding and two secondary windings, be provided with the secondary winding side of each current transformer one it is secondary by two
Winding ties up the support of lifting, and the two ends of the first winding are connected to the first winding mother circulated for primary current
Row, the other end of the first winding busbar is connected with an outgoing line busbar for being connected with power circuit, it is described once around
Group busbar and an outgoing line busbar are arranged at outside housing.
In order to prevent once it is alternate because air insulation is bad and caused by alternate electric discharge, in the first winding busbar and institute
State the epoxy resin mixed glue poured into a mould on the outside of an outgoing line busbar for a phase insulation.
Further, the epoxy resin mixed glue is HS-8369A/B epoxy resin mixed glues.The epoxy glue can be met
Nuclear power product can meet the safe and reliable of nuclear power environment and use to the particular/special requirement of the performances such as insulation, antidetonation, radiation proof.
Further, pyrocondensation strap is used to tie up two secondary windings of each current transformer and the support for one
Body.
Cause coil error change larger in order to avoid being influenceed between electric field, it is existing that appearance measurement is inaccurate, electricity etc. is climbed in insulation
As the first winding and secondary winding are using the wrapping of semiconductive crimped paper full-shield.
Compared with prior art, the technical scheme that the application is provided, the technique effect or advantage having be：This is three-phase integrated
Formula current transformer arranges three current transformers using " product " word structure, while product small form factor requirements are met, also full
The requirement of sufficient electric measurement and relay protection, is adapted to mount in nuclear power switch cabinet.
Brief description of the drawings
Fig. 1 is the front view of Integral three-phase current transformer；
Fig. 2 is the left view of Integral three-phase current transformer；
Fig. 3 is the right view of Integral three-phase current transformer；
In figure, 1- secondary windings, 2- supports, 3- first winding busbars, outgoing line busbar of 4-, the mixing of 5- epoxy resin
Glue, 6- inserts, 7- full skirts, bis- contact nuts of 8-.
Embodiment
The embodiment of the present application is by providing a kind of Integral three-phase current transformer, to solve existing threephase current transformer
Volume is big, assemble the technical problem of inconvenience etc., it is adaptable to the nuclear power switch cabinet strict to volume requirement.
It is right below in conjunction with Figure of description and specific embodiment in order to be better understood from above-mentioned technical proposal
Above-mentioned technical proposal is described in detail.
Embodiment
A kind of Integral three-phase current transformer, as shown in Figure 1, 2, 3, including housing and the ring being cast in the housing
The main body that oxygen tree fat epoxy glue is constituted, is provided with the main body and pours into a mould what is fixed and insulate by the epoxy resin mixed glue
Three current transformers, i.e. current transformer A, current transformer B and current transformer C, in order to meet three-phase integrated structure,
The requirement of product miniaturization is reached, when device body is die-filling, three current transformers are into " product " word structural arrangement, i.e. A, C phase
Device body or so is distributed, top arrangement in the middle of B phase devices body.
The device body of each current transformer includes a first winding and two secondary windings 1, because mold cavity space is narrow and small,
Insulation distance adjustment is difficult, so being provided with one in the secondary winding side of each current transformer by two secondary windings
Tie up the support 2 of lifting, use pyrocondensation strap by two secondary windings 1 of each current transformer and the support 2 tie up for
One.Independently lifted when die-filling, so that meet secondary winding 1 keeps enough insulation distances with first winding, three electric currents are mutual
Two secondary windings 1 of sensor are respectively lifted, while die cover plate is opened a window, convenient adjustment secondary outgoing line distance.
The two ends of the first winding be connected to for primary current circulate first winding busbar 3, it is described once
The other end of winding busbar 3 is connected with an outgoing line busbar 4 for being connected with power circuit, the He of first winding busbar 3
Outgoing line busbar 4 is arranged at outside housing.
For 10kv product, the distance of current transformer two-phase at least needs 120mm, small-sized in order to meet product
The demand of change, in this implementation, distance only has 75mm between the two-phase of three current transformers of finished product font structure arrangement, in order to
Prevent once it is alternate because air insulation is bad and caused by alternate electric discharge, in the first winding busbar and an outlet mother
The epoxy resin mixed glue 5 for a phase insulation is poured into a mould in exclusive side.
In the present embodiment, the epoxy resin mixed glue 5 is HS-8369A/B epoxy resin mixed glues.The epoxy glue can
Particular/special requirement of the nuclear power product to performances such as insulation, antidetonation, radiation proofs is met, can meet the safe and reliable of nuclear power environment makes
With.The effect that full skirt 7 is set on housing is to be used to improve Electric Field Distribution herein, solves field strength concentration and causes and secondary outgoing line end
Climb electricity.
Three-phase integrated integrated cast structure internal electric field complex distribution, influences each other larger, in order to avoid influence between electric field
Cause coil error change larger, appearance measurement is inaccurate, the phenomenons such as electricity are climbed in insulation, and the first winding and secondary winding are adopted
Wrapped up with semiconductive crimped paper full-shield.
If arranging three current transformers according to yi word pattern, its width is up to 300mm or so, and three in the present embodiment
The size of phase integral type current transformer is 470*220*400mm, and width only has 220mm, effectively reduces the overall width of product
Degree, meets the demand for being installed on nuclear power switch cabinet.
In above-described embodiment of the application, by providing a kind of Integral three-phase current transformer, including housing and cast
The main body that epoxy resin mixed glue in the housing is constituted, is provided with the main body and passes through the epoxy resin mixed glue
Fixed and insulation three current transformers of cast, it is characterised in that three current transformers into " product " word structural arrangement,
The device body of each current transformer includes a first winding and two secondary windings, each current transformer it is secondary around
Group side is provided with a support that two secondary windings are tied up to lifting, and the two ends of the first winding are connected to use
The first winding busbar circulated in primary current, the other end of the first winding busbar is connected with for being connected with power circuit
An outgoing line busbar, the first winding busbar and an outgoing line busbar be arranged at outside housing, and the utility model exists
While meeting product small form factor requirements, the requirement of electric measurement and relay protection is also met, nuclear power switch cubicle is adapted to mount to
In vivo.
It should be pointed out that described above is not to limitation of the present utility model, the utility model is also not limited to
The example above, what those skilled in the art were made in essential scope of the present utility model changes, is modified, adding
Plus or replace, should also belong to protection domain of the present utility model.
Claims (5)
1. a kind of Integral three-phase current transformer, including housing are constituted with the epoxy resin mixed glue being cast in the housing
Main body, be provided with the main body and three current transformers that are fixed and insulating poured into a mould by the epoxy resin mixed glue,
Characterized in that, three current transformers are into " product " word structural arrangement, the device body of each current transformer includes one
First winding and two secondary windings, be provided with the secondary winding side of each current transformer one by two it is secondary around
Group ties up the support of lifting, and the two ends of the first winding are connected to the first winding busbar circulated for primary current,
The other end of the first winding busbar is connected with an outgoing line busbar for being connected with power circuit, and the first winding is female
Row and an outgoing line busbar are arranged at outside housing.
2. Integral three-phase current transformer according to claim 1, it is characterised in that in the first winding busbar and
The epoxy resin mixed glue for a phase insulation has been poured into a mould on the outside of outgoing line busbar.
3. Integral three-phase current transformer according to claim 2, it is characterised in that the epoxy resin mixed glue is
HS-8369A/B epoxy resin mixed glues.
4. Integral three-phase current transformer according to claim 1, it is characterised in that will each electricity using pyrocondensation strap
Two secondary windings of current transformer are tied up with the support to be integrated.
5. Integral three-phase current transformer according to claim 1, it is characterised in that the first winding and it is secondary around
Group is using the wrapping of semiconductive crimped paper full-shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720180011.1U CN206460865U (en) | 2017-02-27 | 2017-02-27 | A kind of Integral three-phase current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720180011.1U CN206460865U (en) | 2017-02-27 | 2017-02-27 | A kind of Integral three-phase current transformer |
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| Publication Number | Publication Date |
|---|---|
| CN206460865U true CN206460865U (en) | 2017-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720180011.1U Active CN206460865U (en) | 2017-02-27 | 2017-02-27 | A kind of Integral three-phase current transformer |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119238A (en) * | 2018-07-03 | 2019-01-01 | 大连第二互感器集团有限公司 | A kind of current transformer and preparation method thereof |
| CN114496510A (en) * | 2022-02-24 | 2022-05-13 | 江苏斯菲尔电气股份有限公司 | Anti direct current component mutual-inductor subassembly reaches instrument including it |
| CN115497731A (en) * | 2021-12-07 | 2022-12-20 | 西安高压电器研究院股份有限公司 | Current transformer and environment-friendly inflating cabinet |
| CN116564683A (en) * | 2023-05-15 | 2023-08-08 | 浙江天际互感器股份有限公司 | Three-phase integrated zero sequence current transformer |
-
2017
- 2017-02-27 CN CN201720180011.1U patent/CN206460865U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119238A (en) * | 2018-07-03 | 2019-01-01 | 大连第二互感器集团有限公司 | A kind of current transformer and preparation method thereof |
| CN115497731A (en) * | 2021-12-07 | 2022-12-20 | 西安高压电器研究院股份有限公司 | Current transformer and environment-friendly inflating cabinet |
| CN114496510A (en) * | 2022-02-24 | 2022-05-13 | 江苏斯菲尔电气股份有限公司 | Anti direct current component mutual-inductor subassembly reaches instrument including it |
| CN114496510B (en) * | 2022-02-24 | 2023-10-03 | 江苏斯菲尔电气股份有限公司 | Anti direct current component transformer subassembly and instrument including it |
| CN116564683A (en) * | 2023-05-15 | 2023-08-08 | 浙江天际互感器股份有限公司 | Three-phase integrated zero sequence current transformer |
| CN116564683B (en) * | 2023-05-15 | 2024-01-05 | 浙江天际互感器股份有限公司 | Three-phase integrated zero sequence current transformer |
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