CN201413768Y - Three-phase zero-sequence combined/through type current mutual inductor - Google Patents
Three-phase zero-sequence combined/through type current mutual inductor Download PDFInfo
- Publication number
- CN201413768Y CN201413768Y CN2009200547408U CN200920054740U CN201413768Y CN 201413768 Y CN201413768 Y CN 201413768Y CN 2009200547408 U CN2009200547408 U CN 2009200547408U CN 200920054740 U CN200920054740 U CN 200920054740U CN 201413768 Y CN201413768 Y CN 201413768Y
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- iron core
- phase
- zero sequence
- mutual inductor
- winding
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Abstract
The utility model discloses and aims at providing a three-phase zero-sequence combined/through type current mutual inductor which has the characteristics of high precision and small volume. The current mutual inductor comprises a base (1), a phase CT iron core (2), a zero-sequence CT iron core (3), a winding (4) and a pouring epoxy body (5). The winding (4) is wound on the phase CT iron core (2) and the zero-sequence CT iron core (3). The base (1), the phase CT iron core (2), the zero-sequence CT iron core (3), the winding (4) and the pouring epoxy body (5) are integrated and mutually insulated. The current mutual inductor can be widely applied in the field of a vacuum switch cabinet.
Description
Technical field
The utility model relates to a kind of three-phase zero sequence composite type, straight-through current transformer.
Background technology
Vacuum switch cabinet adopts vacuum extinction, SF
6Gas has overcome present air insulation switch cubicle and SF as supplementary insulation
6Deficiencies such as, complex structure performance instability big as the existing volume of the switch cubicle of arc-extinguishing medium, life-span are short, unreliable have been represented 10kV switch cubicle development in future direction.But because overall dimension is limit, present vacuum switch cabinet can't be monitored three-phase phase current and zero-sequence current simultaneously, three monomer phase current mutual inductors and zero sequence current mutual inductor promptly can't be installed, and the precision of the monomer zero sequence current mutual inductor that tradition is continued to use is lower, insensitive or error is big to little electric current, and vacuum switch cabinet requirement rated current is 630A, can not reach the requirement of vacuum switch cabinet technical indicator, so monomer phase current mutual inductor of the prior art and zero sequence current mutual inductor exist precision low, undesirable and the overall dimension of technical indicator does not meet the defective of vacuum switch cabinet assembling form greatly.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of precision height, three-phase zero sequence composite type, straight-through current transformer that volume is little are provided.
The technical scheme that the utility model adopted is: the utility model comprises base, phase CT iron core, zero sequence CT iron core, winding, casting epoxy body, described winding technique is on described phase CT iron core and described zero sequence CT iron core, and described base, described phase CT iron core, described zero sequence CT iron core, described winding, described casting epoxy body is integrated and mutually insulated each other.
Described phase CT iron core, described zero sequence CT iron core are " mouth " font or " O " font.
Described phase CT iron core, described zero sequence CT iron core are formed by high-magnetodensity silicon steel plate packing or coiling.
The beneficial effects of the utility model are: because the utility model is shaped by three-phase punching phase current mutual inductor and a punching zero sequence current mutual inductor integral cast, the utility model comprises base, phase CT iron core, zero sequence CT iron core, winding, casting epoxy body, described phase CT iron core, described zero sequence CT iron core forms for " mouth " font or " O " font and by high-magnetodensity silicon steel plate packing or coiling, described winding technique is on described phase CT iron core and described zero sequence CT iron core, described base, described phase CT iron core, described zero sequence CT iron core, described winding is cast into one by epoxy resin by technological requirement, described base, phase CT iron core, zero sequence CT iron core, winding is mutually insulated each other, so the utlity model has the precision height, the advantage that volume is little, so overall dimension can satisfy the substantive requirements of form of vacuum switch cabinet assembling.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, the utility model mainly is shaped by three-phase punching phase current mutual inductor and a punching zero sequence current mutual inductor integral cast, the utility model comprises base 1, phase CT iron core 2, zero sequence CT iron core 3, winding 4, casting epoxy body 5, described phase CT iron core 2 and described zero sequence CT iron core 3 are " mouth " font or " O " font, formed by high-magnetodensity silicon steel plate packing or coiling, described winding 4 is wound on described phase CT iron core 2 and the described zero sequence CT iron core 3.Described base 1, described phase CT iron core 2, described zero sequence CT iron core 3, described winding 4 is integral according to die casting by technological requirement by epoxy resin, described casting epoxy body 5 is the curdled appearance after the epoxy resin casting, described base 1, described phase CT iron core 2, described zero sequence CT iron core 3, described winding 4 is mutually insulated each other, described winding 4 can be prefabricated into the coil device of surface insulation on described phase CT iron core 2 and zero sequence CT iron core 3, the available moulds of industrial equipment of whole assembling are fixed above-mentioned each parts by the designing requirement relative position, be placed in the outer casing mold then and cast.Profile of the present utility model and size be specially for vacuum switch cabinet designs, and has the precision height, volume is little, and overall dimension can satisfy the assembling form requirement of vacuum switch cabinet.
Claims (3)
1, a kind of three-phase zero sequence composite type, straight-through current transformer, it is characterized in that: it comprises base (1), phase CT iron core (2), zero sequence CT iron core (3), winding (4), casting epoxy body (5), described winding (4) is wound on described phase CT iron core (2) and the described zero sequence CT iron core (3), and described base (1), described phase CT iron core (2), described zero sequence CT iron core (3), described winding (4), described casting epoxy body (5) is integrated and mutually insulated each other.
2, three-phase zero sequence composite type according to claim 1, straight-through current transformer is characterized in that: described phase CT iron core (2), described zero sequence CT iron core (3) are " mouth " font or " O " font.
3, three-phase zero sequence composite type according to claim 1, straight-through current transformer is characterized in that: described phase CT iron core (2), described zero sequence CT iron core (3) are formed by high-magnetodensity silicon steel plate packing or coiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200547408U CN201413768Y (en) | 2009-04-17 | 2009-04-17 | Three-phase zero-sequence combined/through type current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200547408U CN201413768Y (en) | 2009-04-17 | 2009-04-17 | Three-phase zero-sequence combined/through type current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201413768Y true CN201413768Y (en) | 2010-02-24 |
Family
ID=41715649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200547408U Expired - Lifetime CN201413768Y (en) | 2009-04-17 | 2009-04-17 | Three-phase zero-sequence combined/through type current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201413768Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568802A (en) * | 2012-01-11 | 2012-07-11 | 北京瑞奇恩互感器设备有限公司 | Three-phase integrated current transformer |
| CN103247434A (en) * | 2012-02-10 | 2013-08-14 | 西门子公司 | Combination converter arrangement and switching device |
| CN103439555A (en) * | 2013-09-11 | 2013-12-11 | 南京捷泰电力设备有限公司 | Measurement and protection integrated current transformer module |
| CN105609283A (en) * | 2016-01-15 | 2016-05-25 | 胡妍 | Three-phase zero sequence current transformer |
-
2009
- 2009-04-17 CN CN2009200547408U patent/CN201413768Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568802A (en) * | 2012-01-11 | 2012-07-11 | 北京瑞奇恩互感器设备有限公司 | Three-phase integrated current transformer |
| CN103247434A (en) * | 2012-02-10 | 2013-08-14 | 西门子公司 | Combination converter arrangement and switching device |
| CN103439555A (en) * | 2013-09-11 | 2013-12-11 | 南京捷泰电力设备有限公司 | Measurement and protection integrated current transformer module |
| CN105609283A (en) * | 2016-01-15 | 2016-05-25 | 胡妍 | Three-phase zero sequence current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100224 |
|
| CX01 | Expiry of patent term |