CN203300404U - One-piece three-phase combination standard potential transformer - Google Patents
One-piece three-phase combination standard potential transformer Download PDFInfo
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- CN203300404U CN203300404U CN2013202948531U CN201320294853U CN203300404U CN 203300404 U CN203300404 U CN 203300404U CN 2013202948531 U CN2013202948531 U CN 2013202948531U CN 201320294853 U CN201320294853 U CN 201320294853U CN 203300404 U CN203300404 U CN 203300404U
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Abstract
Provided is a one-piece three-phase combination standard potential transformer. The one-piece three-phase combination standard potential transformer is produced under the experimental background that a low-middle voltage combination transformer needs the condition that three phases boost voltages at the same time and boost currents at the same time, and the one-piece three-phase combination standard potential transformer is developed. When the voltages are boosted at the same time, the three-phase combination standard potential transformer only needs to be connected directly. The one-piece three-phase combination standard potential transformer has the advantages that wiring is convenient, the automatic degree is high, the demands for the experimental site conditions of combined type transformers can be better met, and a better market prospect is achieved.
Description
Technical field
The utility model is particularly related to a kind of integral type three-phase combination standard voltage transformer.
Background technology
In recent years, threephase current transformer and threephase potential transformer use in a large number in the electrical network of 35kV and following electric pressure, and they are multiplex in large user and the special-purpose voltage monitoring of making critical point electric energy metrical and electrical network that becomes.Playing error test, temperature rise test and the mutual interference test of in the JB/T10432-2004 " three-phase combination transformer " of enforcement and JB/T10433-2004 " threephase potential transformer " industry standard, having stipulated three-phase combination transformer and threephase potential transformer on August 1st, 2004 all should be in the situation that applies three-phase voltage and three-phase current carries out.But, the three-phase mutual inductor testing apparatus that testing agencies at different levels but do not adapt.For a long time, that three-phase combination transformer manufacturer or detection at different levels department adopt single plane method to carry out exfactory inspection, examination and week inspection, namely in the situation that low-voltage or low current, to current transformer loop or voltage transformer circuit adopt respectively to each apply mutually rated current or rated voltage method detect.Single plane method detects and mainly contains following several disadvantage:
(1) current transformer is to be operated in high pressure conditions, and detect, is at low-pressure state.
(2) voltage transformer is to be operated in current state, and detect, is at little current status.
(3) three-phase combination transformer is to move under three-phase state, and only detect, under single-phase, carries out.
(4) existing current transformer in combination transformer, have again voltage transformer, and under the actual motion condition, the two is worked simultaneously, has each other electromagnetic field effects.
This patent is exactly the integral type three-phase combination standard voltage transformer under development type three phase combined mutual-inductor while pressure-increasning state under such background.
The utility model content
The utility model, for shortcomings and deficiencies of the prior art, is developed a kind of integral type three-phase combination standard voltage transformer, can be three-phase three formula combination standard voltage transformers or three-phase four formula combination standard voltage transformers.
The technical solution of the utility model is
Integral type three-phase combination standard voltage transformer, for three-phase three formula combination standard voltage transformers or three-phase four formula combination standard voltage transformers, the utility model is characterised in that: comprise the iron core of rectangular frame structure and around the first side winding on iron core, the balance winding, basic secondary winding, auxiliary secondary winding five parts; First side winding wherein, balance winding, the auxiliary horizontal iron core that is around in of secondary winding; Basic secondary winding is evenly distributed in the both sides of iron core.
The insulating material that three-phase combination standard voltage transformer adopts is insulating oil or epoxy resin.
Auxiliary secondary winding in the utility model mainly compensates basic secondary winding,
This utility model needs three-phase to boost simultaneously at the mesolow combined instrument transformer, under the background of testing under the condition of up-flow simultaneously, produce, develop a kind of integral type three-phase combination standard voltage transformer, when boosting simultaneously, directly connecing this three-phase combination standard voltage transformer gets final product, has easy-to-connect, automaticity is high, more meets under the field condition of combined instrument transformer test, has market prospects preferably.
The accompanying drawing explanation
Fig. 1 is integral type three-phase combination standard voltage transformer schematic diagram;
Fig. 2 is single-phase potential transformer schematic diagram in integral type three-phase combination standard voltage transformer;
Fig. 3 is single-phase potential transformer winding figure in integral type three-phase combination standard voltage transformer.
Embodiment
Integral type three-phase combination standard voltage transformer, for three-phase three formula combination standard voltage transformers or three-phase four formula combination standard voltage transformers, the utility model is characterised in that: comprise the iron core 3 of rectangular frame structure and around the first side winding 1 on iron core, balance winding 2, basic secondary winding 4, auxiliary secondary winding 5 five parts; First side winding wherein, balance winding, the auxiliary horizontal iron core that is around in of secondary winding; Basic secondary winding is evenly distributed in the both sides of iron core.
the utility model integral type three-phase combination standard voltage transformer, as can be known according to the common electric energy metrical mode of connection, can be divided into three-phase three formulas, three-phase four formulas, the utility model is introduced as an example of three-phase four formulas example, as shown in Figure 1, it comprises 3 phase standard potential transformers, single-phase standard potential transformer schematic diagram and winding diagram such as Fig. 2, shown in Figure 3, 1 is first side winding, 2 is the balance winding, 3 is iron core, 4 is basic secondary winding, 5 are auxiliary secondary winding, first side winding is divided into symmetrical two halves, half of normal voltage shared on every one side, be distributed in respectively the both sides of iron core, the balance winding designs mainly for overcoming three-phase combination standard voltage transformer stray capacitance, also be distributed in respectively the both sides of iron core, auxiliary secondary winding, namely compensating winding mainly compensates secondary winding, the compensation method of auxiliary secondary winding can with first side winding, basic iron core winding of secondary winding, also can with first side winding, the coiling respectively of basic secondary winding, during the difference coiling, on independent iron core, basic secondary winding is considered as a winding of new iron core, auxiliary secondary winding is considered as the secondary winding of new iron core.
Claims (1)
1. integral type three-phase combination standard voltage transformer, for three-phase three formula combination standard voltage transformers or three-phase four formula combination standard voltage transformers, it is characterized in that: comprise the iron core (3) of rectangular frame structure and around the first side winding (1) on iron core, balance winding (2), basic secondary winding (4), auxiliary secondary winding (5) five parts; First side winding wherein, balance winding, the auxiliary horizontal iron core that is around in of secondary winding; Basic secondary winding is evenly distributed in the both sides of iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202948531U CN203300404U (en) | 2013-05-27 | 2013-05-27 | One-piece three-phase combination standard potential transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202948531U CN203300404U (en) | 2013-05-27 | 2013-05-27 | One-piece three-phase combination standard potential transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203300404U true CN203300404U (en) | 2013-11-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202948531U Expired - Lifetime CN203300404U (en) | 2013-05-27 | 2013-05-27 | One-piece three-phase combination standard potential transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203300404U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630420A (en) * | 2018-07-16 | 2018-10-09 | 国网四川省电力公司电力科学研究院 | A kind of three element combination transformer of three-phase |
-
2013
- 2013-05-27 CN CN2013202948531U patent/CN203300404U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630420A (en) * | 2018-07-16 | 2018-10-09 | 国网四川省电力公司电力科学研究院 | A kind of three element combination transformer of three-phase |
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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: 20131120 |
|
| CX01 | Expiry of patent term |