CN203644535U - High-current transformer for high-capacity experiment - Google Patents
High-current transformer for high-capacity experiment Download PDFInfo
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- CN203644535U CN203644535U CN201320761824.1U CN201320761824U CN203644535U CN 203644535 U CN203644535 U CN 203644535U CN 201320761824 U CN201320761824 U CN 201320761824U CN 203644535 U CN203644535 U CN 203644535U
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- current transformer
- secondary winding
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- 238000002474 experimental method Methods 0.000 title abstract 2
- 238000004804 winding Methods 0.000 claims abstract description 71
- 238000009413 insulation Methods 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 238000012360 testing method Methods 0.000 claims description 26
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052802 copper Inorganic materials 0.000 abstract description 7
- 239000010949 copper Substances 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000012946 outsourcing Methods 0.000 description 2
- -1 phenolic aldehyde Chemical class 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
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Abstract
The utility model provides a high-current transformer for a high-capacity experiment. The high-current transformer adopts an air-cooling dry-type insulation structure; the transformer body is mounted in a box body with heat dissipation holes; the transformer body of the high-current transformer comprises an iron core, primary windings and secondary windings. The high-current transformer is characterized in that multiple high currents can be provided for outputting, that the high currents are output continuously for a long term is ensured, the currents output by the high-current transformer are actual sine waves, and the secondary output voltage is low and within a safe voltage range. The secondary windings of the high-current transformer are formed by rolling copper plates, five kinds of connecting plates prefabricated into different shapes are connected with a secondary leading-out terminal, so that the series-parallel connection of the secondary windings is achieved, and different output currents can be obtained through conversion.
Description
Technical field
The utility model relates to a kind of large capacity test strong current transformer, and being a kind ofly can provide multiple High-current output, large capacity test strong current transformer, the electric equipment test that can need to large electric current power for current transformer or other.
Background technology
Strong current transformer is used for current transformer error test, Insulation Thermal Stability Test and temperature rise test etc. as up-flow source conventionally, is one of necessary equipment of instrument transformer manufactory and ct calibrating unit.Instrument transformer Insulation Thermal Stability Test and temperature rise test duration often reach tens even tens hours, need strong current transformer that continual and steady current value is provided.Current, the strong current transformer that many manufactories produce is difficult to adapt to some occasion and uses, while doing error test as the current transformer that is 8000-10000/1A to rated current, the strong current transformer of existing output 10000A does not often reach nominal value, even differ larger, output characteristic is very soft, is difficult to meet test requirements document, for a long time stablize High-current output even if reach nominal value but can not maintain, only can move the short time.Trace it to its cause be that the actual capacity of strong current transformer is inadequate, internal resistance is excessive, the reason such as output voltage and corresponding output current mis-arrange causes.To this, user the ampere-turn method such as often can only adopt to reduce test current to carry out error test.And the ampere-turn method tests such as employing, owing to being subject to the impact that a time winding returns to conductor magnetic field, can be introduced additive error, thereby reduce error test precision, avoid current transformer error to produce larger impact as wanted, will have higher requirement to experimental condition.
Summary of the invention
The utility model provides a kind of large capacity test strong current transformer, and it can provide multiple High-current output and output current is practical sinusoidal wave, possesses large capacity, can maintain for a long time stable High-current output.
Large capacity test strong current transformer is air cooling dry insulation structure, and it comprises casing, device body and the secondary connecting plate being connected for connection in series-parallel.The device body of strong current transformer comprises iron core, winding and secondary winding.Unshakable in one's determination selection is a key point that manufactures and designs large capacity test strong current transformer, and iron core becomes block form structure for high-quality cold-reduced silicon sheet closed assembly, is divided into 8 grades of closed assemblies.Iron core has adopted larger sectional area, to obtain the output voltage of every circle 10V, facilitates the manufacture of secondary winding; Make magnetic flux density unshakable in one's determination be operated in magnetization curve linearity range unshakable in one's determination, to guarantee that strong current transformer output current wave is as practical sinusoidal wave.A winding is on phenolic aldehyde paper web, and one time winding is divided into two groups, and every group of number of turn is identical, is set on two posts unshakable in one's determination; One time winding outside is set with secondary winding, adopts copper coin to roll four secondary winding, two secondary winding of each suit on each core limb, secondary winding end welding line bank.Winding outside wrapping main insulation, between winding and secondary winding and insulate and fix with insulating end ring between secondary winding and secondary winding.Once and secondary winding combined complete to core limb, with steel folder fixed iron core, be installed on box bottom.Device body is contained in the casing that tank wall has louvre, draws for convenience of leading-out terminal, and before it, tank wall adopts insulation board, has line outlet groove on it, and 8 copper coin leading-out terminals processed of secondary winding are drawn by line outlet groove, and leading-out terminal is respectively a1, x1; A2, x2; A3, x3; A4, tetra-groups of terminals of x4.One time winding exit is drawn by the perforate on the insulation cover plate of casing top, and four outlet terminals of two groups of windings of transverse arrangement of turbo, are respectively A1, X1 successively; A2, two groups of terminals of X2, once, secondary winding outlet terminal can connect for series and parallel connections.Another important feature of the present utility model is the structure that its secondary winding wiring has adopted a kind of connected mode uniqueness, the connection in series-parallel of secondary winding connects and adopts prefabricated connecting plate to connect, connecting plate is connected with secondary outlet terminal, realize all parallel connections of secondary winding, connection in series-parallel and all series connection, to obtain multiple output current.For convenience of the carrying of equipment, universal wheel is equipped with in the bottom of strong current transformer to be made it to be convenient to mobile.
Large capacity test is large by outputting current steadily, the load variations scope of strong current transformer, reliable operation, easy to operate and safe, applied widely.
Accompanying drawing explanation
fig. 1 is schematic diagram of the present utility model; Fig. 2 is a winding construction figure of the present utility model; Fig. 3 is secondary winding structure chart of the present utility model; Fig. 4 be of the present utility model once, secondary winding sleeve structure figure; Fig. 5 be of the present utility model once, secondary winding winding diagram; Fig. 6 is outline drawing of the present utility model.
embodiment:
Large capacity test is used strong current transformer schematic diagram as shown in Figure 1.
Large capacity test is used winding schematic diagram of strong current transformer as shown in Figure 2.
A1 in figure, X1 and A2, X2 is two sections an of winding.
Large capacity test is used strong current transformer secondary winding structure as shown in Figure 3.
In figure: 1---secondary winding terminals, 2---secondary winding.
Once and secondary winding sleeve structure as shown in Figure 4.
In figure: 1---phenolic aldehyde paper web, 2---end insulation, 3---phenolic aldehyde cardboard insulating end ring, 4---lamination wooden insulation end circle, 5---a winding, 6---winding outsourcing insulation, 7---secondary winding.
Once and secondary winding mode of connection schematic diagram as shown in Figure 5.
Large capacity test is used strong current transformer profile as shown in Figure 6.
In figure: 1---primary connection terminal, 2---earth terminal, 3---casing, 4---secondary connection end, 5---case lid.
Large capacity test can reach 100kVA by strong current transformer rated capacity, and rated voltage ratio is 400/10-20-40V, and its secondary output voltage is within the scope of safety voltage level, and secondary output-current rating is 2500A, 5000A and 10000A.
Unshakable in one's determination selection is a key point that manufactures and designs large capacity test strong current transformer, and after employing 0.35mm high-quality cold-reduced silicon sheet unshakable in one's determination cutting, closed assembly becomes block form structure to be divided into 8 grades of closed assemblies.
The utility model adopts the iron core of larger sectional area can make strong current transformer obtain the output voltage of every circle 10V, to facilitate the manufacture of secondary winding; Make the magnetic flux density unshakable in one's determination of strong current transformer be operated in the linearity range of magnetization curve unshakable in one's determination, to guarantee that strong current transformer output current wave meets the requirement of the practical sinusoidal wave of national Specification; Guarantee that the specified output of strong current transformer meets the requirement of 100kVA.
One time winding adopts naked flat copper band outsourcing polyimide film on phenolic aldehyde paper web, is divided into two groups of coilings, and every group around 20 circles, and two groups of coilings altogether, are set on two posts unshakable in one's determination.One time winding outside is set with secondary winding, and secondary winding adopts copper coin to roll and forms, and its end welding copper coin line bank, need roll four secondary winding altogether, two of each suits on each core limb.When four whole parallel connections of secondary winding, can realize output current 10000A(output voltage 10V); When connecting and can realize output current 5000A (output voltage 20V) again after two two groups of secondary winding parallel connections; When the whole series connection of secondary winding can realize output current 2500A(output voltage 40V).After a winding technique in outside wrapping main insulation, between winding and secondary winding and adopt the wooden insulating end ring insulation of making of lamination between secondary winding and secondary winding and fixed.Once and secondary winding combined complete to core limb, with steel folder fixed iron core, after device body is fastening, be installed on box bottom.
For realizing the output of above-mentioned parameter, this large capacity test has adopted a kind of structure of connected mode uniqueness with the secondary winding wiring of strong current transformer, and wiring is simple, convenient.This is another important feature of the present utility model, is also Design and manufacture tricks of the trade.The connection in series-parallel of secondary winding connects the connecting plate connection that employing is made in advance, and connecting plate is made five kinds of different size shapes by copper coin, by diagram 5, connecting plate is connected with secondary outlet terminal, to obtain different current output value.
Claims (2)
1. large capacity test strong current transformer, is characterized in that it is air cooling dry insulation structure, and it comprises casing, device body and the secondary connecting plate being connected for connection in series-parallel; Device body comprises winding, secondary winding and iron core one time; Iron core becomes block form structure with high-quality cold-reduced silicon sheet closed assembly, is divided into 8 grades of closed assemblies; One time winding is divided into two groups, and every group of number of turn is identical, is set on two posts unshakable in one's determination; Winding outside is set with secondary winding, two of each suits on each core limb, once and secondary winding combined complete to core limb, with steel folder fixed iron core, be installed on box bottom; A winding exit is by drawing on the insulation cover plate of casing top, two groups of four outlet terminals of transverse arrangement of turbo successively, on tank wall insulation board, have line outlet groove above, secondary winding leading-out terminal is drawn by line outlet groove, once, secondary winding outlet terminal can connect for series and parallel connections.
2. large capacity test strong current transformer according to claim 1, the connection in series-parallel that it is characterized in that the secondary winding of strong current transformer connects the prefabricated connecting plate connection of employing, connecting plate is connected with secondary outlet terminal, realizes all parallel connections of secondary winding, connection in series-parallel and all series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320761824.1U CN203644535U (en) | 2013-11-28 | 2013-11-28 | High-current transformer for high-capacity experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320761824.1U CN203644535U (en) | 2013-11-28 | 2013-11-28 | High-current transformer for high-capacity experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203644535U true CN203644535U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320761824.1U Expired - Fee Related CN203644535U (en) | 2013-11-28 | 2013-11-28 | High-current transformer for high-capacity experiment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104299764A (en) * | 2014-09-12 | 2015-01-21 | 合肥金德电力设备制造有限公司 | Novel capacity regulating transformer |
| CN105353180A (en) * | 2015-12-28 | 2016-02-24 | 武汉磐电科技有限公司 | Strong current generator with multiple uniformly distributed conductors |
| CN105390249A (en) * | 2015-11-24 | 2016-03-09 | 宜兴市兴益特种变压器有限公司 | Bare copper spiral type multi-voltage regulation transformer |
| CN105551772A (en) * | 2016-01-15 | 2016-05-04 | 浙江三辰电器有限公司 | Heavy current transformer |
| CN114300245A (en) * | 2021-12-30 | 2022-04-08 | 广东敞开电气有限公司 | Transformer system |
-
2013
- 2013-11-28 CN CN201320761824.1U patent/CN203644535U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104299764A (en) * | 2014-09-12 | 2015-01-21 | 合肥金德电力设备制造有限公司 | Novel capacity regulating transformer |
| CN105390249A (en) * | 2015-11-24 | 2016-03-09 | 宜兴市兴益特种变压器有限公司 | Bare copper spiral type multi-voltage regulation transformer |
| CN105353180A (en) * | 2015-12-28 | 2016-02-24 | 武汉磐电科技有限公司 | Strong current generator with multiple uniformly distributed conductors |
| CN105551772A (en) * | 2016-01-15 | 2016-05-04 | 浙江三辰电器有限公司 | Heavy current transformer |
| CN114300245A (en) * | 2021-12-30 | 2022-04-08 | 广东敞开电气有限公司 | Transformer system |
| CN114300245B (en) * | 2021-12-30 | 2023-08-15 | 广东敞开电气有限公司 | Transformer system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20181128 |