CN103903837A - Coil structure of multi-voltage experimental transformer - Google Patents
Coil structure of multi-voltage experimental transformer Download PDFInfo
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- CN103903837A CN103903837A CN201410125027.3A CN201410125027A CN103903837A CN 103903837 A CN103903837 A CN 103903837A CN 201410125027 A CN201410125027 A CN 201410125027A CN 103903837 A CN103903837 A CN 103903837A
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- loop construction
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Abstract
The invention discloses a coil structure of a multi-voltage experimental transformer. The coil structure comprises a primary coil and a secondary coil, the primary coil is of a corner connection structure, the secondary coil comprises an upper half coil and a lower half coil, and a switching device used for regulating a connection mode of the upper half coil and the lower half coil is arranged between the upper and lower half coils. The connection mode of the upper half coil and the lower half coil is parallel corner connection, serial corner connection or serial star connection. The transformer adopting the coil structure can output various different voltage classes, and needs of a laboratory are met.
Description
Technical field
The invention belongs to transformer manufacture technology, relate to a kind of loop construction of multivoltage experimental transformer.
Background technology
Conventional transformer regulating is meticulousr, generally be 2.5%, thereby it is less to be only applicable to scope range of the fluctuation of voltage, relatively better area of power supply quality.But need to provide in laboratory under the requirement of high voltage test voltage of different electric pressures, common transformer just can not be satisfied the demand.Fig. 4 is conventional voltage experimental transformer coil connected mode.The secondary coil first half circle number of turn of serving as theme, Lower Half is the pressure regulation number of turn, generally can only ± 5% or ± 2*2.5% near pressure regulation, different electric pressures can not be provided, use so be not suitable for laboratory transformer.
Summary of the invention
In order to overcome the problem of traditional voltage experimental transformer existence, the object of this invention is to provide a kind of loop construction of multivoltage experimental transformer, adopt the transformer of this loop construction can export multiple different electric pressure, meet the needs in laboratory.
The object of the invention is to be achieved through the following technical solutions:
A kind of loop construction of multivoltage experimental transformer, comprise primary winding and secondary coil, primary winding is angle connecting structure, it is characterized in that: secondary coil comprises upper semisection coil and lower semisection coil, between upper semisection coil and lower semisection coil, be provided with the conversion equipment of adjusting upper semisection coil and lower semisection coil connected mode.
In the present invention, described upper semisection coil with lower semisection coil connected mode is: corner connection in parallel, connect corner connection or series connection star connect.
In the loop construction of oil-filled transformer, conversion equipment is tap changer, and connection in series-parallel conversion, the star corner connection conversion of secondary coil regulate realization at twice by tap changer.In the dry loop construction that becomes transformer, conversion equipment is connecting rod, and connection in series-parallel conversion, the star corner connection conversion of secondary coil realize by the exchange of connecting rod.
The described primary winding number of turn is 48 circles; U1, V1, W1 section 330 circles in upper semisection coil, in lower semisection coil, U2, V2, W2 section are also 330 circles.
The present invention, by the adjustment of a secondary coil number of turn, designs the transformer that meets different electric pressures, has fully met the needs of laboratory actual conditions, has reduced the input of equipment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of lower semisection corner connection in parallel on primary winding corner connection, secondary coil in the present invention.
Fig. 2 is the schematic diagram of lower semisection series connection corner connection on primary winding corner connection, secondary coil in the present invention.
Fig. 3 is the schematic diagram that in the present invention, on primary winding corner connection, secondary coil, lower semisection series connection star connects.
Fig. 4 is conventional voltage experimental transformer coil connected mode schematic diagram.
Embodiment
A kind of loop construction of multivoltage experimental transformer, primary voltage is uncomfortable, secondary can be exported multiple different electric pressure, comprise primary winding 1 and secondary coil 2, primary winding is angle connecting structure, secondary coil comprises upper semisection coil 21 and lower semisection coil 22, is provided with the conversion equipment of adjusting upper semisection coil and lower semisection coil connected mode between upper semisection coil and lower semisection coil.Upper semisection coil with lower semisection coil connected mode is: corner connection in parallel, connect corner connection or series connection star connect.
With input voltage 480V of Laboratory Request, three-phase, 50Hz, it is that example illustrates this mentality of designing that output voltage requires 3.3kV/6.6kV/11.43kV below.
Get primary winding angle connecting structure, the number of turn is 48 circles, circle voltage et=10V/ circle;
Get secondary coil upper semisection U1, V1, W1 section 330 circles, lower semisection U2, V2, W2 section are also 330 circles.
In Fig. 1, lower semisection corner connection in parallel on secondary coil, is 330*10=3300V according to calculating output phase line voltage, because voltage is lower, electric current is larger, and after coils from parallel connection of coils, conductor cross-section is double, and this has just met the requirement of coil temperature rise.
In Fig. 2, lower semisection series connection corner connection on secondary coil, is 330*2*10=6600V according to calculating output phase line voltage, because voltage is higher, electric current is less, and after coil series connection, total number of turns is double, and this just meets the requirement that high voltage uses.
In Fig. 3, on secondary coil, lower semisection series connection star connects, and be 330*2*10=6600V, and now line voltage is 6600*1.732=1143V according to calculating output phase voltage, and this has just reached the requirement of the 3rd group of use voltage.
In oil-filled transformer, the connection in series-parallel conversion of secondary coil, star corner connection conversion can regulate realization at twice by tap changer; The dry object that can reach by the exchange of connecting rod voltage-regulation in transformer that becomes.
In the present invention, by the adjustment of a secondary coil number of turn, can further extend, thereby design the transformer that meets different electric pressures, fully meet the needs of laboratory actual conditions, reduce the input of equipment.
Claims (5)
1. the loop construction of a multivoltage experimental transformer, comprise primary winding (1) and secondary coil (2), primary winding (1) is angle connecting structure, it is characterized in that: secondary coil (2) comprises upper semisection coil (21) and lower semisection coil (22), between upper semisection coil (21) and lower semisection coil (22), be provided with the conversion equipment of adjusting upper semisection coil (21) and lower semisection coil (22) connected mode.
2. the loop construction of multivoltage experimental transformer according to claim 1, is characterized in that: described upper semisection coil (21) with lower semisection coil (22) connected mode is: corner connection in parallel, connect corner connection or series connection star connect.
3. the loop construction of multivoltage experimental transformer according to claim 1, it is characterized in that: in the loop construction of oil-filled transformer, conversion equipment is tap changer, and connection in series-parallel conversion, the star corner connection conversion of secondary coil (2) regulate realization at twice by tap changer.
4. the loop construction of multivoltage experimental transformer according to claim 1, it is characterized in that: in the dry loop construction that becomes transformer, conversion equipment is connecting rod, and connection in series-parallel conversion, the star corner connection conversion of secondary coil (2) realize by the exchange of connecting rod.
5. the loop construction of multivoltage experimental transformer according to claim 1, is characterized in that: described primary winding (1) number of turn is 48 circles, circle voltage et=10V/ circle; U1, V1, W1 section 330 circles in upper semisection coil (21), in lower semisection coil (22), U2, V2, W2 section are also 330 circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410125027.3A CN103903837A (en) | 2014-03-31 | 2014-03-31 | Coil structure of multi-voltage experimental transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410125027.3A CN103903837A (en) | 2014-03-31 | 2014-03-31 | Coil structure of multi-voltage experimental transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103903837A true CN103903837A (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410125027.3A Pending CN103903837A (en) | 2014-03-31 | 2014-03-31 | Coil structure of multi-voltage experimental transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529165A (en) * | 2015-10-26 | 2016-04-27 | 浙江江山变压器股份有限公司 | Constant-flux and wide-voltage regulating range intermediate transformer for testing |
| CN110620001A (en) * | 2018-06-20 | 2019-12-27 | 特变电工衡阳变压器有限公司 | Test transformer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05343240A (en) * | 1992-06-10 | 1993-12-24 | Canon Inc | Transformer for switching power source |
| CN2755750Y (en) * | 2004-11-04 | 2006-02-01 | 江苏华鹏变压器有限公司 | Non-cxcitation tap switch of transformer |
| CN101090034A (en) * | 2007-05-14 | 2007-12-19 | 邵长青 | Load capacity and pressure regulating switch for transformer |
| CN202178143U (en) * | 2011-08-16 | 2012-03-28 | 山东晨宇电气股份有限公司 | Intermediate transformer for three phase test |
| CN102867631A (en) * | 2012-10-12 | 2013-01-09 | 宁波市鄞州供电局 | Capacity regulating transformer |
| CN203760278U (en) * | 2014-03-31 | 2014-08-06 | 镇江天力变压器有限公司 | Coil structure of multi-voltage experimental transformer |
-
2014
- 2014-03-31 CN CN201410125027.3A patent/CN103903837A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05343240A (en) * | 1992-06-10 | 1993-12-24 | Canon Inc | Transformer for switching power source |
| CN2755750Y (en) * | 2004-11-04 | 2006-02-01 | 江苏华鹏变压器有限公司 | Non-cxcitation tap switch of transformer |
| CN101090034A (en) * | 2007-05-14 | 2007-12-19 | 邵长青 | Load capacity and pressure regulating switch for transformer |
| CN202178143U (en) * | 2011-08-16 | 2012-03-28 | 山东晨宇电气股份有限公司 | Intermediate transformer for three phase test |
| CN102867631A (en) * | 2012-10-12 | 2013-01-09 | 宁波市鄞州供电局 | Capacity regulating transformer |
| CN203760278U (en) * | 2014-03-31 | 2014-08-06 | 镇江天力变压器有限公司 | Coil structure of multi-voltage experimental transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529165A (en) * | 2015-10-26 | 2016-04-27 | 浙江江山变压器股份有限公司 | Constant-flux and wide-voltage regulating range intermediate transformer for testing |
| CN110620001A (en) * | 2018-06-20 | 2019-12-27 | 特变电工衡阳变压器有限公司 | Test transformer |
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Application publication date: 20140702 |