CN105374534A - Cascading voltage transformer - Google Patents
Cascading voltage transformer Download PDFInfo
- Publication number
- CN105374534A CN105374534A CN201510787671.1A CN201510787671A CN105374534A CN 105374534 A CN105374534 A CN 105374534A CN 201510787671 A CN201510787671 A CN 201510787671A CN 105374534 A CN105374534 A CN 105374534A
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- voltage transformer
- iron core
- winding
- porcelain case
- cascade
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Abstract
The invention discloses a cascading voltage transformer. The cascading voltage transformer comprises a moisture absorber, a porcelain box, an iron core and a base; the moisture absorber is arranged on the porcelain box; the moisture absorber is in seamless connection with the porcelain box; the iron core is arranged in the porcelain box; the base is arranged below the porcelain box; the base is fixedly connected with the porcelain box; the moisture absorber is provided with an oil pointer; a supporting bakelite plate is arranged in the iron core; an upper primary winding and a lower primary winding are arranged in the supporting bakelite plate; the upper primary winding is provided with a junction pole; the lower primary winding is provided with an outgoing cable; a terminal plate is arranged at the tail end of the outgoing cable; the outgoing cable is fixedly connected with the terminal plate; and earthing bolts are arranged at the two ends of the terminal plate. The cascading voltage transformer is small in size, light in weight, high in universality of the internal structure, convenient to produce and low in cost.
Description
Technical field
The present invention relates to a kind of controller switching equipment technical field, particularly relate to a kind of cascade-type voltage transformer.
Background technology
The effect iron core of cascade-type voltage transformer adding balance winding makes the voltage's distribiuting of each unit winding even, improve accuracy of measurement, because secondary winding is around on the lower core post of final stage iron core, after secondary winding connects load, load current produces degaussing magnetic flux, the total magnetic flux in final stage iron core is made to be less than magnetic flux on other iron cores, thus the induced current making each unit winding is not etc., thus accuracy reduces, on the iron core of Unit two, install the number of turn additional for this reason, around to all identical balance winding, and Opposite direction connection, like this, when the magnetic flux of Unit two is unequal, circulation will be produced on balance winding, the iron core degaussing that this electric current makes magnetic flux larger, and the iron core making magnetic flux less increases magnetic, therefore magnetic flux is roughly equal in iron core at different levels, thus each unit winding voltage is evenly distributed, improve the accuracy of voltage transformer.
Voltage transformer is the transformer of a band iron core, and it is primarily of first and second coil, iron core and insulation composition.When applying a voltage U 1 on a winding, just a magnetic flux is produced in iron core, according to the law of electromagnetic induction, then in secondary winding, just produce a secondary voltage U2, change once or the number of turn of secondary winding, different primary voltages and secondary voltage ratio can be produced, this just can form not voltage transformer on year-on-year basis, and voltage transformer converts high voltage to low-voltage in proportion, i.e. 100V, voltage transformer primary side is connected on primary system, secondary side joint measuring instrument, relaying protection etc., (capacitance type potential transformer is widely used) of mainly electromagnetic type, separately there is non electromagnetic, as electronic type, photoelectric type, the basic structure of voltage transformer is very similar with transformer, it also has two windings, one is a winding, one is secondary winding, two windings are all contained in or around on iron core, between two windings and have insulation between winding and iron core, make between two windings and have electrical isolation between winding and iron core, voltage transformer operationally, one time winding parallel connects on the line, secondary winding also connects instrument or relay, therefore when measuring the voltage on high-tension line, although primary voltage is very high, but secondary is low pressure, the safety of operating personnel and instrument can be guaranteed.
Current existing cascade-type voltage transformer volume is large, and weight is comparatively large, and install inconvenient, manufacturing cost is higher.
Summary of the invention
It is little that the technical problem to be solved in the present invention is to provide a kind of volume, lightweight, the highly versatile of internal structure, convenient for production, the cascade-type voltage transformer that cost is low.
For solving the problem, the present invention adopts following technical scheme: a kind of cascade-type voltage transformer, comprise dehydrating breather, porcelain case, iron core and base, described dehydrating breather is located on porcelain case, described dehydrating breather and the seamless link of porcelain case, described iron core is located in porcelain case, described base is located at below porcelain case, described base is fixedly connected with porcelain case, dehydrating breather can absorb the moisture in transformer oil, keep good insulation effect, porcelain case can be stablized by holding structure, can insulate simultaneously, support bakelite plate can stablize by holding structure, lightweight, the highly versatile of internal structure, convenient for production, oil ga(u)ge can keep the content of real-time monitored transformer oil, described dehydrating breather is provided with oil ga(u)ge, support bakelite plate is provided with in described iron core, last winding and winding is next time provided with in described support bakelite plate, described last winding is provided with junction pole, outlet cable is provided with below described winding next time, described outlet cable end is provided with terminal board, described outlet cable is fixedly connected with terminal board, described terminal board two ends are provided with earth stud, the described arranged outside of winding next time has secondary winding.
As preferably, described earth stud and outlet cable are electrically connected, and prevent electromagnetic coupled from disturbing and anti-lightning strike effect.
As preferably, described porcelain case surface is protruding ringwise to be arranged, and keeps insulation effect good.
As preferably, described iron core is square setting, conveniently installs.
As preferably, in described porcelain case, be provided with transformer oil, there is the effect of insulation arc extinguishing.
It is little that this technical scheme has volume, lightweight, the highly versatile of internal structure, convenient for production, the feature that cost is low.
The invention has the beneficial effects as follows: the dehydrating breather of setting can absorb the moisture in transformer oil, keep good insulation effect, porcelain case can be stablized by holding structure, can insulate simultaneously, support bakelite plate can stablize by holding structure, lightweight, the highly versatile of internal structure, convenient for production, oil ga(u)ge can keep the content of real-time monitored transformer oil.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structure chart of a kind of cascade-type voltage transformer of the present invention.
Embodiment
Consult shown in Fig. 1, a kind of cascade-type voltage transformer, comprise dehydrating breather 1, porcelain case 2, iron core 3 and base 4, described dehydrating breather 1 is located on porcelain case 2, described dehydrating breather 1 and porcelain case 2 seamless link, described iron core 3 is located in porcelain case 2, described base 4 is located at below porcelain case 2, described base 4 is fixedly connected with porcelain case 2, described dehydrating breather 1 is provided with oil ga(u)ge 5, be provided with in described iron core 3 and support bakelite plate 6, last winding 7 and winding 8 is next time provided with in described support bakelite plate 6, described last winding 7 is provided with junction pole 9, in use, junction pole 9 and outlet cable 10 are linked in circuit, by base 4, cascade-type voltage transformer is arranged on working region, use can be run, outlet cable 10 is provided with below described winding next time 8, described outlet cable 10 end is provided with terminal board 11, described outlet cable 10 is fixedly connected with terminal board 11, described terminal board 11 two ends are provided with earth stud 12, described winding next time 8 arranged outside has secondary winding (not shown).
Described earth stud 12 is electrically connected with outlet cable 10, in use, prevents electromagnetic coupled from disturbing and anti-lightning strike effect.
Described porcelain case 2 surface is protruding ringwise to be arranged, and in use, keeps insulation effect good.
Described iron core 3 is square setting, in use, conveniently to install.
Be provided with transformer oil 13 in described porcelain case 2, in use, there is the effect of insulation arc extinguishing.
In use, junction pole 9 and outlet cable 10 are linked in circuit, by base 4, cascade-type voltage transformer are arranged on working region, can run use.
The invention has the beneficial effects as follows: the dehydrating breather of setting can absorb the moisture in transformer oil, keep good insulation effect, porcelain case can be stablized by holding structure, can insulate simultaneously, support bakelite plate can stablize by holding structure, lightweight, the highly versatile of internal structure, convenient for production, oil ga(u)ge can keep the content of real-time monitored transformer oil.
The above; be only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any change of expecting without creative work or replacement; all should be encompassed within protection scope of the present invention; therefore, the protection range that protection scope of the present invention should limit with claims is as the criterion.
Claims (5)
1. a cascade-type voltage transformer, it is characterized in that: comprise dehydrating breather, porcelain case, iron core and base, described dehydrating breather is located on porcelain case, described dehydrating breather and the seamless link of porcelain case, described iron core is located in porcelain case, described base is located at below porcelain case, described base is fixedly connected with porcelain case, described dehydrating breather is provided with oil ga(u)ge, support bakelite plate is provided with in described iron core, last winding and winding is next time provided with in described support bakelite plate, described last winding is provided with junction pole, outlet cable is provided with below described winding next time, described outlet cable end is provided with terminal board, described outlet cable is fixedly connected with terminal board, described terminal board two ends are provided with earth stud, the described arranged outside of winding next time has secondary winding.
2. cascade-type voltage transformer according to claim 1, is characterized in that: described earth stud and outlet cable are electrically connected.
3. cascade-type voltage transformer according to claim 1, is characterized in that: described porcelain case surface is protruding ringwise to be arranged.
4. cascade-type voltage transformer according to claim 1, is characterized in that: described iron core is square setting.
5. cascade-type voltage transformer according to claim 1, is characterized in that: be provided with transformer oil in described porcelain case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510787671.1A CN105374534A (en) | 2015-11-17 | 2015-11-17 | Cascading voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510787671.1A CN105374534A (en) | 2015-11-17 | 2015-11-17 | Cascading voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105374534A true CN105374534A (en) | 2016-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510787671.1A Pending CN105374534A (en) | 2015-11-17 | 2015-11-17 | Cascading voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105374534A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1742873A1 (en) * | 1990-07-31 | 1992-06-23 | Запорожский завод высоковольтной аппаратуры Производственного объединения "Запорожтрансформатор" им.В.И.Ленина | Cascade voltage transformer |
| CN2502384Y (en) * | 2001-09-17 | 2002-07-24 | 大连金业电力设备有限公司 | 66KV indoor/outdoor dry voltage transformer |
| CN205177588U (en) * | 2015-11-17 | 2016-04-20 | 国家电网公司 | Tandem formula voltage transformer |
-
2015
- 2015-11-17 CN CN201510787671.1A patent/CN105374534A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1742873A1 (en) * | 1990-07-31 | 1992-06-23 | Запорожский завод высоковольтной аппаратуры Производственного объединения "Запорожтрансформатор" им.В.И.Ленина | Cascade voltage transformer |
| CN2502384Y (en) * | 2001-09-17 | 2002-07-24 | 大连金业电力设备有限公司 | 66KV indoor/outdoor dry voltage transformer |
| CN205177588U (en) * | 2015-11-17 | 2016-04-20 | 国家电网公司 | Tandem formula voltage transformer |
Non-Patent Citations (1)
| Title |
|---|
| 徐云清: "JCC1-110型电压互感器计算实例", 《变压器》 * |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160302 |