CN203871171U - Combined type mutual inductor - Google Patents
Combined type mutual inductor Download PDFInfo
- Publication number
- CN203871171U CN203871171U CN201420115920.3U CN201420115920U CN203871171U CN 203871171 U CN203871171 U CN 203871171U CN 201420115920 U CN201420115920 U CN 201420115920U CN 203871171 U CN203871171 U CN 203871171U
- Authority
- CN
- China
- Prior art keywords
- cushion block
- transformer
- mutual inductor
- iron core
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000002955 isolation Methods 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 19
- 229910052802 copper Inorganic materials 0.000 claims description 19
- 239000010949 copper Substances 0.000 claims description 19
- 238000004804 winding Methods 0.000 claims description 18
- 238000005266 casting Methods 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 4
- 150000004706 metal oxides Chemical class 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract description 9
- 230000005684 electric field Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model relates to a combined type mutual inductor which is scientific in structure arrangement, small in size and excellent in insulation performance. Mutual influences between two mutual inductors can be reduced as much as possible, and metering precision is guaranteed. According to the technical scheme, the combined type mutual inductor comprises a current mutual inductor, a voltage mutual inductor and an installation fixing cushion block located under the voltage mutual inductor. The combined type mutual inductor is characterized in that the upper portion of the voltage mutual inductor is provided with a fixation isolation cushion block, and the current mutual inductor is placed on the upper portion of the fixation isolation cushion block. The combined type mutual inductor further comprises a fully-sealed shell, and the current mutual inductor, the voltage mutual inductor, the installation fixing cushion block and the fixation isolation cushion block are sealed and fixed in the fully-sealed shell. The combined type mutual inductor is suitable for being used in medium-voltage substations and medium-voltage transformer substations and by large-scale industry users.
Description
Technical field
The utility model relates to a kind of instrument transformer; particularly a kind of combined instrument transformer; mainly be applicable to Zhong Ya electric substation, Zhong Ya transformer station, large industrial cousumer etc., rated frequency is to make electric current, voltage measurement, electric energy metrical and used for relay protection in 50Hz or 60Hz, the rated voltage outdoor electric system that is 10kV～15kV.
Background technology
Along with the develop rapidly of national economy, national grid construction is also with rapid changepl. never-ending changes and improvements, we are to power grid quality, have higher requirement to electric energy metrical and management etc., voltage, current transformer are also more and more higher to its requirement as one of requisite equipment important in electrical network, at present, the instrument transformer overwhelming majority is all that voltage transformer summation current transformer is discrete, and the high-tension apparatus such as instrument transformer and monitoring management apparatus are generally separating devices, be unfavorable for the management and control to power grid quality, be unfavorable for metering validity and thief-proof electrically.And be generally applied to its insulation property of outdoor instrument transformer, weatherability is relatively poor.
Also engendered in the market the combined instrument transformer that voltage transformer summation current transformer is combined, two instrument transformers are arranged side by side in the horizontal direction, and its shortcoming is: 1, volume is larger; 2, between two instrument transformers, influence each other greatlyr, cause measuring accuracy lower.
Summary of the invention
The technical problems to be solved in the utility model is: provide for the problem of above-mentioned existence that a kind of structural configuration science, volume are little, the combined instrument transformer of excellent insulation performance, can reduce as much as possible influencing each other between two instrument transformers, ensure measuring accuracy.
The technical scheme that the utility model adopts is: combined instrument transformer, comprise current transformer, voltage transformer, and the fixing cushion block of the installation that is positioned at voltage transformer below, it is characterized in that: described voltage transformer top is provided with a fixing isolation cushion block, described current transformer is positioned over this fixing isolation cushion block top; Described combined instrument transformer also comprises the totally-enclosed housing that current transformer, voltage transformer, the fixing cushion block of installation and fixing isolation cushion block is sealed and be fixed on inside.
Described current transformer comprises and is positioned over the iron core I of fixing isolation cushion block top, primary winding I through iron core I, and be wound in the secondary coil I in iron core I, wherein primary winding I two ends are electrically connected with respectively the inlet wire copper bar and the outlet copper bar that extend outside.
Described voltage transformer comprises being positioned over installs the iron core II of fixing cushion block top, and is wound in primary winding II and the secondary coil II in iron core II, and wherein primary winding II is electrically connected with primary winding I through the high-voltage connection extending straight up.
Described iron core I place plane is mutually vertical with iron core II place plane, and all perpendicular to housing bottom surface.
Described housing bottom is provided with the installation under casing for configuring secondary device, and described secondary device is connected with instrument transformer by holding wire.
A described inlet wire copper bar and equal updip 15 degree of outlet copper bar are arranged.
A described inlet wire copper bar side is equipped with distribution type polymeric metal oxide surge arrester.
Described housing adopts the outdoor epoxide resin vacuum moulding by casting of electrician's level.
The beneficial effects of the utility model are: 1, current transformer is positioned over to voltage transformer top, and fixing isolation cushion block of between placement, reasonable structural arrangement, when reducing overall volume, has reduced influencing each other between two instrument transformers.2, described iron core I place plane is mutually vertical with iron core II place plane, and all perpendicular to housing bottom surface, make Electric Field Distribution even, and the magnetic circuit of two instrument transformers is mutually vertical, further reduce influencing each other between two instrument transformers, thereby guaranteed the precision of metering.3, primary winding II be electrically connected with primary winding I through the high-voltage connection extending straight up, reaches good fit with overall electric field, insulation system, and reduction affects.4, housing bottom is provided with installation under casing, be equipped with intelligent processing module or terminal, can realize the function such as electric parameter monitoring, management and electric energy metrical, electric energy management to electrical network, can realize the radio communication with main website etc. simultaneously, carrying out Long-distance Control and management, is the desirable corollary equipment that intelligent grid is built.5, an inlet wire copper bar and equal updip 15 degree of outlet copper bar are arranged, are easy to install, and can effectively eliminate stress.6, an inlet wire copper bar side is equipped with distribution type polymeric metal oxide surge arrester, has the advantages such as non-linear excellence, steep wave response is good, negotiability is strong, can effectively protect product to avoid the superpotential injuries such as thunderbolt.7, housing adopts the outdoor epoxide resin vacuum moulding by casting of electrician's level, and electric insulating quality and weatherability are good, have the advantages such as fire-proof and explosion-proof, non-maintaining, easy to install simultaneously.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that Fig. 1 loads onto the structural representation of installing after under casing.
Embodiment
As shown in Figure 1, the present embodiment comprises installs fixing cushion block 3, be positioned over the voltage transformer 2 of the fixing cushion block of this installation top, be positioned over the fixing isolation cushion block 4 of voltage transformer 2 tops, be placed in the current transformer 1 of fixing isolation cushion block 4 tops, and by current transformer 1, voltage transformer 2, fixing cushion block 3 is installed and is fixed isolation cushion block 4 and be closed in inner totally-enclosed housing 5, described housing 5 adopts the outdoor epoxide resin vacuum moulding by casting of electrician's level, by aforementioned four partial fixings in inside, to ensure the globality of structure, improve insulating properties and the weatherability of instrument transformer simultaneously.
Described current transformer 1 comprises and is positioned over the iron core I 1-1 of fixing isolation cushion block 4 tops, primary winding I 1-2 through iron core I 1-1, and be wound in the secondary coil I 1-3 on iron core I 1-1, wherein primary winding I 1-2 two ends are electrically connected with respectively the inlet wire copper bar 6 and the outlet copper bar 7 that extend housing 5 outsides.In this example, current transformer 1 adopts the ultracrystallite iron core with high magnetic characteristics, after airtight buffering wrapping with special coil winding machine evenly around with high strength enamelled wire, and shield, there is superhigh precision and good electrical insulation properties.A described inlet wire copper bar 6 and equal updip 15 degree of outlet copper bar 7 are arranged, be easy to install, and can effectively eliminate stress, every copper bar is equipped with two φ 12 connecting pores, outer frame linking ceases to be busy is directly connected with high-voltage fence, connector is sealed with silicon special rubber sleeve, and have special outdoor epoxy glue solidify be tightly connected solid and reliable.
Described voltage transformer 2 comprises being positioned over installs the iron core II 2-1 that fixes cushion block 3 tops, and be wound in primary winding II 2-2 and the secondary coil II on iron core II 2-1, wherein primary winding II 2-2 is electrically connected with primary winding I 1-2 through the high-voltage connection 8 extending straight up, reach good fit with overall electric field, insulation system, reduce impact.In this example, voltage transformer 2 adopts core structure, high-strength diamond dotted film-insulated, and coil insulation adopts 1/3 graded insulation structure, and insulation is reliable and save material cost and reduced product design size.Product Precision is high, and electrical insulation properties is good, bears overvoltage ability strong.
Described iron core I 1-1 place plane is mutually vertical with iron core II 2-1 place plane, and all, perpendicular to housing 5 bottom surfaces, make Electric Field Distribution even, and the magnetic circuit of two instrument transformers is mutually vertical, further reduce influencing each other between two instrument transformers, thereby further improved the precision of metering.
As shown in Figure 2, described housing 5 bottoms are provided with the installation under casing 9 for configuring secondary device, and described secondary device is connected with instrument transformer by holding wire.In this example, secondary device comprises intelligent processing module or terminal, can realize the function such as electric parameter monitoring, management and electric energy metrical, electric energy management to electrical network, can realize and the radio communication of main website etc. simultaneously, carry out Long-distance Control and management, be the desirable corollary equipment that intelligent grid is built.
Described inlet wire copper bar 6 sides are equipped with distribution type polymeric metal oxide surge arrester 10, have the advantages such as non-linear excellence, steep wave response is good, negotiability is strong, can effectively protect product to avoid the superpotential injuries such as thunderbolt.
Described housing 5 lower side are processed with a M8 screw hole, and in order to connect neutral point, three-phase is connected safe and reliable, and creepage distance is large, good insulation preformance.
Claims (8)
1. a combined instrument transformer, comprise current transformer (1), voltage transformer (2), and the fixing cushion block (3) of the installation that is positioned at voltage transformer (2) below, it is characterized in that: described voltage transformer (2) top is provided with a fixing isolation cushion block (4), described current transformer (1) is positioned over this fixing isolation cushion block top; Described combined instrument transformer also comprises current transformer (1), voltage transformer (2), fixing cushion block (3) is installed and is fixed isolation cushion block (4) the totally-enclosed housing (5) that seals and be fixed on inside.
2. combined instrument transformer according to claim 1, it is characterized in that: described current transformer (1) comprises and is positioned over the iron core I (1-1) of fixing isolation cushion block (4) top, primary winding I (1-2) through iron core I (1-1), and be wound in the secondary coil I (1-3) in iron core I (1-1), wherein primary winding I (1-2) two ends are electrically connected with respectively and extend housing (5) outside an inlet wire copper bar (6) and an outlet copper bar (7).
3. combined instrument transformer according to claim 2, it is characterized in that: described voltage transformer (2) comprises being positioned over installs the iron core II (2-1) of fixing cushion block (3) top, and be wound in primary winding II (2-2) and the secondary coil II in iron core II (2-1), wherein primary winding II (2-2) is electrically connected with primary winding I (1-2) through the high-voltage connection (8) extending straight up.
4. combined instrument transformer according to claim 3, is characterized in that: described iron core I (1-1) place plane is mutually vertical with iron core II (2-1) place plane, and all perpendicular to housing (5) bottom surface.
5. according to the combined instrument transformer described in claim 1 or 2 or 3 or 4, it is characterized in that: described housing (5) bottom is provided with the installation under casing (9) for configuring secondary device, and described secondary device is connected with instrument transformer by holding wire.
6. according to the combined instrument transformer described in claim 2 or 3 or 4, it is characterized in that: a described inlet wire copper bar (6) and an outlet copper bar (7) all updip 15 degree are arranged.
7. according to the combined instrument transformer described in claim 2 or 3 or 4, it is characterized in that: a described inlet wire copper bar (6) side is equipped with distribution type polymeric metal oxide surge arrester (10).
8. according to the combined instrument transformer described in claim 1 or 2 or 3 or 4, it is characterized in that: described housing (5) adopts the outdoor epoxide resin vacuum moulding by casting of electrician's level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420115920.3U CN203871171U (en) | 2014-03-14 | 2014-03-14 | Combined type mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420115920.3U CN203871171U (en) | 2014-03-14 | 2014-03-14 | Combined type mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203871171U true CN203871171U (en) | 2014-10-08 |
Family
ID=51652096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420115920.3U Expired - Lifetime CN203871171U (en) | 2014-03-14 | 2014-03-14 | Combined type mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203871171U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898485A (en) * | 2017-02-13 | 2017-06-27 | 国网山东省电力公司蓬莱市供电公司 | Power transformation transformer group |
| CN114038668A (en) * | 2021-11-17 | 2022-02-11 | 国网湖南省电力有限公司 | Three-phase integrated current transformer for primary and secondary fusion power distribution equipment |
-
2014
- 2014-03-14 CN CN201420115920.3U patent/CN203871171U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898485A (en) * | 2017-02-13 | 2017-06-27 | 国网山东省电力公司蓬莱市供电公司 | Power transformation transformer group |
| CN114038668A (en) * | 2021-11-17 | 2022-02-11 | 国网湖南省电力有限公司 | Three-phase integrated current transformer for primary and secondary fusion power distribution equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203310894U (en) | Novel field winding all-fiber current transformer | |
| CN106469601A (en) | A kind of controller switching equipment is with one or two fusion threephase potential transformers | |
| CN203871171U (en) | Combined type mutual inductor | |
| CN202034225U (en) | Fully insulated plug-in type voltage transformer with metal shell | |
| CN201812665U (en) | Anti-resonance three-phase voltage transformer | |
| CN204558229U (en) | A kind of epoxy resin pouring shielding isolating voltage mutual inductor | |
| CN208093344U (en) | A kind of dc circuit breaker energy supply transformer | |
| CN203551621U (en) | High-voltage dry-type metering box with three-phase four-wire system | |
| CN103730246A (en) | 10KV potential transformer | |
| CN203456779U (en) | A metering handcart suitable for a switch cabinet | |
| CN201601012U (en) | Voltage transformer used for GIS | |
| CN204142823U (en) | A kind of measurement and protective device being applied to 10kV electric system | |
| CN203799859U (en) | Outdoor bus type current transformer | |
| CN204424732U (en) | A kind of high voltage power distributing cabinet changing current transformer position | |
| CN202758735U (en) | Three-phase integrated type current transformer for intelligent user switch for dividing | |
| CN204130318U (en) | A kind of lightning protection dry-type transformer | |
| CN202695113U (en) | Voltage transformer with arrester | |
| CN205230796U (en) | Voltage transformer | |
| CN202736729U (en) | Electronic current and voltage transformer for 126kV GIS (Global Information System) | |
| CN202585045U (en) | Electrical transformer with voltage measurement and protection function | |
| CN207663925U (en) | A kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit | |
| CN207068639U (en) | Outdoor pole top switch three-phase current combination transformer | |
| CN201732673U (en) | Combined current transformer for branch and division circuit breakers | |
| CN203882763U (en) | Input and output reactor for medium voltage power electronic device | |
| CN204215886U (en) | A kind of voltage transformer of shockproof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |
|
| CX01 | Expiry of patent term |