CN201698886U - Three-phase bus type metering current transformer at transformer area - Google Patents
Three-phase bus type metering current transformer at transformer area Download PDFInfo
- Publication number
- CN201698886U CN201698886U CN2009202486767U CN200920248676U CN201698886U CN 201698886 U CN201698886 U CN 201698886U CN 2009202486767 U CN2009202486767 U CN 2009202486767U CN 200920248676 U CN200920248676 U CN 200920248676U CN 201698886 U CN201698886 U CN 201698886U
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- phase
- current transformer
- secondary coil
- metering
- insulation body
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Abstract
The utility model relates to a three-phase bus type metering current transformer at an outdoor transformer area. The current transformer is in a support type structure formed by pouring an iron core, a secondary winding, an A phase secondary coil, a B phase secondary coil, a C phase secondary coil and a secondary cable into a whole by using epoxy resins and is wholly arranged on a bar-shaped mounting plate. The main insulator sealing the A-C phase secondary coils is in a long cake shape with a certain thickness. Three thorough circular bus holes are distributed on the main insulator at equal intervals, axially parallel with one another and positioned on the central plane of the main insulator. The secondary cable is arranged below the sides of the main insulator and fixed by a fixing clamp. The mounting holes on the bar-shaped mounting plate can be regulated horizontally and are in the form of an elongated hole. The rated transformation ratio required by actual metering is poured on the main insulator. The utility model has the characteristics of convenient mounting, stable insulation, high protection level of preventing stealing electric energy, wide application, intensification and the like.
Description
Technical field
The utility model relates to the low district's electric energy measuring equipment of presenting a theatrical performance as the last item on a programme of electric power system, specifically a kind of district's metering three-phase bus formula current transformer.
Background technology
Along with living standards of the people improve constantly, directly cause commercial power, household electricity surge, power load is increasing, and old electric network composition can not adapt to economic fast development and living standards of the people and improve constantly the needs growing to the electric weight demand.The low tension net platform region must put into the melting pot, and could provide electric energy safe, reliable, high-quality for the user; Along with one, the enforcement of the second stage of upgrading of rural power grids engineering, and a series of measures have been taked:, changed the situation that the platform plot structure falls behind relatively substantially as reasonable distribution line load, radius of electricity supply, raising transformer ability, choose reasonable neutral line cross section, replacing current transformer specification, realization low-pressure reactive compensation etc.But as the capital equipment of electric energy measurement, instrument transformer still is faced with to need to upgrade to change acts as affair.The existing product structure is single-phase product, is divided into A, B, the C three-phase is installed respectively, perhaps adopts outdoor form to be installed in and becomes on the platform, perhaps adopts indoor product to be installed on and becomes platform metering box house, and its secondary connection need link to each other with electric energy meter at last by carrying out mutually; Instrument transformer does not have the specified measurement current ratio of immutability of clear and definite producer's mark; Exist install complicated, degree of protection is poor, easily stealing, easily problem such as electric weight dispute takes place, the attendant of electric-power metering department need regularly carry out and safeguards and inspection work, wastes a lot of manpower financial capacities.
The utility model content
Problems such as poor for the degree of protection that solves prior art mesolow platform district metering current mulual inductor, easy stealing, installation complexity, the technical problems to be solved in the utility model provides a kind of district's metering three-phase bus formula current transformer, can directly be installed on step-down side, with electric energy meter meter direct interface.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
The outdoor platform of the utility model district's metering three-phase bus formula current transformer is the column support type structure of one for adopting poured with epoxy resin by iron core, secondary winding, A phase secondary coil, B phase secondary coil, C phase secondary coil and secondary cable, integral installation is on a bar shaped mounting panel, and the main insulation body that envelope is put A～C phase secondary coil is the Long Circle with thickness.
Main insulation body equal intervals is distributed with three circular bus holes that penetrate, and each bus axially bored line is parallel, is positioned on the central horizontal face of main insulation body; The side lower part of main insulation body is provided with secondary cable, and adopts geometrical clamp to fix; Installing hole on the bar shaped mounting panel be can left and right adjusting the elongated hole form; Be cast with the rated current no-load voltage ratio that actual metered requires on the main insulation body.
The utlity model has following beneficial effect and advantage:
1. easy for installation, insulation is stablized: the utility model is integral structure by the poured with epoxy resin insulation, can directly distinguish the supporting installation of transformer with low presenting a theatrical performance as the last item on a programme, three-phase bus cable one circle punching is by the bus mouth of product, and realize easily and being electrically connected of electric energy meter, the assembling of employing monomer-type, complicated operation have been solved, the insulation problem of unstable;
2. anti-electricity-theft, degree of protection is high: the utility model secondary directly adopts armoured cable to realize that the transmission of electric power signal has fundamentally solved original instrument transformer wiring complexity, ageing of insulation, the easy possibility of stealing, improve the degree of protection that distribution equipment is transformed generally, improved the reliability of power supply metering;
3. be widely used, intensification: the utility model can replace Vintage Product fully, realize with the transformer in all size low-voltage platform district supporting, the intrinsic immutability of product surface is measured the no-load voltage ratio sign and is efficiently solved the dispute that user's electric energy is adjusted generation, the intensification degree significantly improves, and product is widely used in metering transformation and the new and old circuit.
Description of drawings
Fig. 1 is the utility model external structure front view;
Fig. 2 is the utility model external structure end view;
Fig. 3 is the utility model internal structure schematic diagram;
Embodiment
The utility model adopts following structure:
Shown in Fig. 1～3, the utility model comprises: iron core 1, secondary winding 2, A phase secondary coil 3, B phase secondary coil 4, C phase secondary coil 5, secondary cable 6, bar shaped mounting panel 7, main insulation body 8, bus hole 9, semicircle geometrical clamp 10, installing hole 11, rated current no-load voltage ratio 12, secondary support 13.
Secondary winding 2 is wound on the iron core 1 of circular ring type equably, and auxiliary wrapping insulating material, leave and take the secondary connection of certain-length as requested, make A phase secondary coil 3, B phase secondary coil 4, C phase secondary coil 5, and successively secondary connection and secondary cable 6 are welded and insulation processing reliably, and auxiliary wrapping secondary support 13, thereby formed the coil device body of an integral body, handle through oven dry, utilize secondary support 13 and mould to fix during the dress mould, and the insulation distance of adjuster body periphery reaches uniformity coefficient, adopts epoxide resin vacuum to be cast for three-phase integrated formula structure, is installed at last on the bar shaped mounting panel 7.Envelope is put the main insulation body 8 of secondary coil for having certain thickness Long Circle with thickness, guarantee that A～C three-phase coil 3～5 has uniform insulating material and enough mechanical strengths, main insulation body 8 central horizontal positions equidistantly are evenly distributed with three circular bus holes 9 that penetrate, each bus hole 9 parallel axes, be positioned on the central horizontal face of main insulation body 8, pass for a bus cable single turn, electric energy metrical uses to utilize electromagnetic induction principle to carry out accurately; The side lower part of main insulation body 8 is provided with secondary cable 6, and adopt semicircle geometrical clamp 10 to be fixed on the bar shaped mounting panel 7, secondary cable 6 is the metal armouring cable, has strong degree of protection, prevent to steal and cut and the phenomenon of stealing takes place, and as realizing the transition lead of signal transmission with electric energy meter; Installing hole 11 on the bar shaped mounting panel 7 be can left and right adjusting the elongated hole form, the fixture on convenient and the transformer realize accurate interface and remove and install quick; Be cast with the rated current no-load voltage ratio 12 of expression actual metered scope on the main insulation body 8, effectively stopped old product easily by the shortcoming of change nameplate no-load voltage ratio, solved user's electric energy and adjusted the dispute that produces, the intensification degree significantly improves;
The outdoor platform of the utility model district's metering three-phase bus formula current transformer is a kind of new product that designs according to national standard fully, employing rolls iron core, utilize electromagnetic induction principle, make secondary current can reflect the situation of change of primary current exactly, make product directly be installed on low pressure and become in the platform, use as electric energy metrical.
At aspect of performance, have easy for installation, characteristics such as insulation is stable, anti-electricity-theft, degree of protection is high, be widely used, intensification and can improve the reliability of power supply greatly, be widely used in that metering is transformed and newly-increased circuit.
Claims (5)
1. an outdoor platform district measures three-phase bus formula current transformer, for adopting poured with epoxy resin by iron core (1), secondary winding (2), A phase secondary coil (3), B phase secondary coil (4), C phase secondary coil (5) and secondary cable (6) is the column support type structure of one, integral installation is characterized in that on a bar shaped mounting panel (7): envelope is put the main insulation body (8) of A～C phase secondary coil (3～5) for having the Long Circle of thickness.
2. according to described district's metering of claim 1 three-phase bus formula current transformer, it is characterized in that: main insulation body (8) equal intervals is distributed with three circular bus holes (9) that penetrate, each bus hole (9) parallel axes is positioned on the central horizontal face of main insulation body (8).
3. according to described district's metering of claim 1 three-phase bus formula current transformer, it is characterized in that: the side lower part of main insulation body (8) is provided with secondary cable (6), and adopts geometrical clamp (10) fixing.
4. according to described of claim 1 district metering three-phase bus formula current transformer, it is characterized in that: the installing hole (11) on the bar shaped mounting panel (7) be can left and right adjusting the elongated hole form.
5. according to described district's metering of claim 1 three-phase bus formula current transformer, it is characterized in that: be cast with the rated current no-load voltage ratio (12) that actual metered requires on the main insulation body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202486767U CN201698886U (en) | 2009-11-25 | 2009-11-25 | Three-phase bus type metering current transformer at transformer area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202486767U CN201698886U (en) | 2009-11-25 | 2009-11-25 | Three-phase bus type metering current transformer at transformer area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201698886U true CN201698886U (en) | 2011-01-05 |
Family
ID=43400132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202486767U Expired - Lifetime CN201698886U (en) | 2009-11-25 | 2009-11-25 | Three-phase bus type metering current transformer at transformer area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201698886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123367A (en) * | 2011-11-21 | 2013-05-29 | 深圳市泰昂能源科技股份有限公司 | Device of integration for signal acquisitions and indicating lights |
-
2009
- 2009-11-25 CN CN2009202486767U patent/CN201698886U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123367A (en) * | 2011-11-21 | 2013-05-29 | 深圳市泰昂能源科技股份有限公司 | Device of integration for signal acquisitions and indicating lights |
| CN103123367B (en) * | 2011-11-21 | 2015-08-19 | 深圳市泰昂能源科技股份有限公司 | A kind of device integrating signals collecting and pilot lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hunan Dabeihu Transformer Co., Ltd. Assignor: Dalian North Instrument Transformer Group Co., Ltd. Contract record no.: 2011430000125 Denomination of utility model: Three-phase bus type metering current transformer at transformer area Granted publication date: 20110105 License type: Exclusive License Record date: 20110809 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110105 |
|
| CX01 | Expiry of patent term |