CN201732673U - Combined current transformer for branch and division circuit breakers - Google Patents
Combined current transformer for branch and division circuit breakers Download PDFInfo
- Publication number
- CN201732673U CN201732673U CN2010202061558U CN201020206155U CN201732673U CN 201732673 U CN201732673 U CN 201732673U CN 2010202061558 U CN2010202061558 U CN 2010202061558U CN 201020206155 U CN201020206155 U CN 201020206155U CN 201732673 U CN201732673 U CN 201732673U
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- Prior art keywords
- phase
- chamber
- iron core
- current transformer
- branch
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- Expired - Fee Related
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000004804 winding Methods 0.000 claims abstract description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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Abstract
The utility model discloses a combined current transformer for branch and division circuit breakers. The combined current transformer comprises a current transformer body (1), a cavity I and a cavity II which are insulated to each other are respectively arranged in an outer casing (2) of the current transformer body (1), a zero-sequence iron core (4) is disposed in the cavity I, two sides of the zero-sequence iron core (4) are provided with zero-sequence windings (5), the cavity II is divided into a A-phase chamber, a B-phase chamber and a C-phase chamber which are insulated from each other, an A-phase iron core (9) is arranged in the A-phase chamber, two sides of the A-phase iron core (9) are wound with A-phase windings (10), a B-phase iron core (11) is arranged in the B-phase chamber, two sides of the B-phase iron core (11) are wound with B-phase windings (12), a C-phase iron core (13) is arranged in the C-phase chamber, two sides of the C-phase iron core (13) are wound with C-phase windings (14), a plurality of copper inserts (15) are distributed on the bottom surface of the outer casing (2), and the copper inserts (15) are insulated from the cavity I and the cavity II.
Description
Technical field
The utility model relates to a kind of combined electrical current transformer that is used for branch's demarcation circuit breaker, particularly is applicable to the combined electrical current transformer in the intelligent grid protection equipment.
Background technology
In the existing outdoor branch demarcation switch equipment, need detection line zero-sequence current and phase current to judge and process circuit single-phase earthing and phase fault, therefore need a built-in zero sequence current mutual inductor and three phase current mutual inductors respectively, this structure exists following shortcoming: 1, the precision of the zero sequence current mutual inductor continued to use of tradition is lower, insensitive or error is big to little electric current, can not reach the requirement of branch's demarcation switch index; 2, built-in zero sequence current mutual inductor needs to install separately, and designs special mounting bracket, and not only cost is higher, has also increased loaded down with trivial details installation and wiring operation; 3, zero sequence current mutual inductor and phase current mutual inductor disperse to install, and the second protection connecting line disperses, and has increased the potential safety hazard of high-voltage line protection and has influenced attractive in appearance; 4, increase independently zero sequence current mutual inductor after, the switch box sizes need increase, weight increases, and does not meet the requirement of electric equipment products miniaturization.
Summary of the invention
The utility model provides a kind of combined electrical current transformer that is used for branch's demarcation circuit breaker, and it is not only simple in structure, and volume is little, and easy for installation, has improved reliability of operation simultaneously.
The utility model has adopted following technical scheme: a kind of combined electrical current transformer that is used for branch's demarcation circuit breaker, it comprises the current transformer body, described current transformer body comprises shell, be respectively equipped with chamber I and chamber II in the enclosure, be that mutually insulated is isolated between chamber I and the chamber II, be provided with the zero sequence iron core in the chamber I, be provided with the zero sequence winding in the both sides of zero sequence iron core, chamber II is separated into A phase chamber, B phase chamber and C be chamber mutually, A phase chamber, isolate for mutually insulated between B phase chamber and the C phase chamber, be provided with A phase iron core in the A phase chamber, both sides at A phase iron core are wound with the A phase winding, be provided with B phase iron core in the B phase chamber, both sides at B phase iron core are wound with the B phase winding, are provided with C phase iron core in the C phase chamber, are wound with the C phase winding in the both sides of C phase iron core, be distributed with some copper inserts in the bottom surface of shell, isolate for insulation between copper insert and chamber I and the chamber II.
Described shell is the epoxy resins insulation pour mass.Described zero sequence iron core is that high-magnetodensity silicon steel plate packing or coiling form.Described A phase iron core, B phase iron core and C iron core mutually are that high-magnetodensity silicon steel plate packing or coiling form.Described copper insert is four.
The utlity model has following beneficial effect: the utility model is provided with zero sequence iron core and winding; A phase iron core and winding; B phase iron core and winding and C be iron core and winding mutually; so not only can reduce volume; simplified structure; make in its casing that is installed in intelligent branch boundary vacuum circuit-breaker easily; reduced the space hold of entire equipment; the quality problems that its second protection line dispersion brings have been saved; the operational reliability and the non-maintaining property of complete set of equipments have been improved; and satisfy detection line zero-sequence current and three-phase line phase current simultaneously, can satisfy the requirement that detects small grounding current.Zero sequence iron core, A phase iron core, B phase iron core and the C that the utility model adopts iron core mutually adopts high-magnetodensity silicon steel plate packing or coiling to form, and can improve accuracy of detection like this; They adopt integral cast, save material, and cost is low, are easy to promote.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the A-A cutaway view of Fig. 1
Fig. 3 is the left view of Fig. 1
Fig. 4 is the upward view of Fig. 1
Fig. 5 is the circuit structure block diagram of intelligent branch boundary vacuum circuit-breaker
Embodiment
At Fig. 1, Fig. 2, among Fig. 3 and Fig. 4, the utility model is a kind of combined electrical current transformer that is used for branch's demarcation circuit breaker, the combined electrical current transformer is the punching instrument transformer, it comprises current transformer body 1, current transformer body 1 comprises shell 2, shell 2 is the epoxy resins insulation pour mass, in shell 2, be respectively equipped with chamber I and chamber II, be that mutually insulated is isolated between chamber I and the chamber II, be provided with zero sequence iron core 4 in the chamber I, zero sequence iron core 4 forms for high-magnetodensity silicon steel plate packing or coiling, be provided with zero sequence winding 5 in the both sides of zero sequence iron core 4, chamber II is separated into A phase chamber, B phase chamber and C be chamber mutually, A phase chamber, isolate for mutually insulated between B phase chamber and the C phase chamber, be provided with A phase iron core 9 in the A phase chamber, both sides at A phase iron core 9 are wound with A phase winding 10, be provided with B phase iron core 11 in the B phase chamber, both sides at B phase iron core 11 are wound with B phase winding 12, be provided with C phase iron core 13 in the C phase chamber, both sides at C phase iron core 13 are wound with C phase winding 14, A phase iron core 9, B phase iron core 11 and C iron core 13 mutually form for high-magnetodensity silicon steel plate packing or coiling, be distributed with four copper inserts 15 in the bottom surface of shell 2, isolate zero sequence iron core 4 and zero sequence winding 5 for insulation between copper insert 15 and chamber I and the chamber II, A phase iron core 9 and A phase winding 10, B phase iron core 11 and B phase winding 12, C phase iron core 13 and C phase winding 14 become whole with copper insert 15 by poured with epoxy resin.
Intelligent branch boundary vacuum circuit-breaker is disclosed in Fig. 5, intelligence branch boundary vacuum circuit-breaker includes breaker body 16, measurement and control unit 17, stube cable 18, breaker body 16 is connected with measurement and control unit 17 by stube cable 18, breaker body 16 comprises built-in voltage transformer 19, vacuum circuit-breaker 20, combined electrical current transformer 1, voltage transformer 19 is connected in parallel on electrical network and advances between two phase lines of power supply, the input of vacuum circuit-breaker 20 is connected with the electrical network incoming power, the output of vacuum circuit-breaker 20 is connected with the output of user's supply and distribution network, combined electrical current transformer 1 is arranged on the phase line of vacuum circuit-breaker 20 output correspondences, stube cable 18 comprises plug, socket and outdoor control cable, measurement and control unit 17 comprises AC sampling module 21, control output module 3, guidance panel 6, communication interface 7 and central processing unit 8, wherein three ports of central processing unit 8 respectively with AC sampling module 21, control output module 3 is unidirectional the connection with guidance panel 6, and the other port of central processing unit 8 is two-way the connection with communication interface 7.
Claims (5)
1. combined electrical current transformer that is used for branch's demarcation circuit breaker, it comprises current transformer body (1), it is characterized in that described current transformer body (1) comprises shell (2), in shell (2), be respectively equipped with chamber I and chamber II, be that mutually insulated is isolated between chamber I and the chamber II, be provided with zero sequence iron core (4) in the chamber I, be provided with zero sequence winding (5) in the both sides of zero sequence iron core (4), the chamber II is separated into A phase chamber, B phase chamber and C be chamber mutually, A phase chamber, isolate for mutually insulated between B phase chamber and the C phase chamber, be provided with A phase iron core (9) in the A phase chamber, be wound with A phase winding (10) in the both sides of A phase iron core (9), be provided with B phase iron core (11) in the B phase chamber, be wound with B phase winding (12) in the both sides of B phase iron core (11), be provided with C phase iron core (13) in the C phase chamber, be wound with C phase winding (14) in the both sides of C phase iron core (13), be distributed with some copper inserts (15) in the bottom surface of shell (2), isolate for insulation between copper insert (15) and chamber I and the chamber II.
2. the combined electrical current transformer that is used for branch's demarcation circuit breaker according to claim 1 is characterized in that described shell (2) is the epoxy resins insulation pour mass.
3. the combined electrical current transformer that is used for branch's demarcation circuit breaker according to claim 1 is characterized in that described zero sequence iron core (4) forms for high-magnetodensity silicon steel plate packing or coiling.
4. the combined electrical current transformer that is used for branch's demarcation circuit breaker according to claim 1, it is characterized in that described A phase iron core (9), B phase iron core (11) and C mutually iron core (13) form for high-magnetodensity silicon steel plate packing or coiling.
5. the combined electrical current transformer that is used for branch's demarcation circuit breaker according to claim 1 is characterized in that described copper insert (15) is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202061558U CN201732673U (en) | 2010-05-28 | 2010-05-28 | Combined current transformer for branch and division circuit breakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202061558U CN201732673U (en) | 2010-05-28 | 2010-05-28 | Combined current transformer for branch and division circuit breakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201732673U true CN201732673U (en) | 2011-02-02 |
Family
ID=43523830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202061558U Expired - Fee Related CN201732673U (en) | 2010-05-28 | 2010-05-28 | Combined current transformer for branch and division circuit breakers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201732673U (en) |
Cited By (1)
| 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 |
-
2010
- 2010-05-28 CN CN2010202061558U patent/CN201732673U/en not_active Expired - Fee Related
Cited By (1)
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: WANG HONGJIAN Effective date: 20130719 Owner name: JIANGSU GUOAO ELECTRIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LI DEHUA Effective date: 20130719 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130719 Address after: 225300, room 1, building 168, Fenghuang West Road, Taizhou Economic Development Zone, Jiangsu, Taizhou, 112 Patentee after: Jiangsu Olympic Power Technology Co., Ltd. Address before: 225300, No. twelve, No. 10, North Village, Si Si Town, Jiangsu City, Taizhou Province Patentee before: Li Dehua Patentee before: Wang Hongjian |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20180528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |