CN204651139U - A kind of three-phase power transformer - Google Patents
A kind of three-phase power transformer Download PDFInfo
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- CN204651139U CN204651139U CN201520411403.5U CN201520411403U CN204651139U CN 204651139 U CN204651139 U CN 204651139U CN 201520411403 U CN201520411403 U CN 201520411403U CN 204651139 U CN204651139 U CN 204651139U
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Abstract
The utility model provides a kind of three-phase power transformer, relates to field transformer.This three-phase power transformer comprises iron core and is placed on three groups of coils on the stem stem of iron core, often organizes coil and has two coil shunting taps, also comprise: 6 multiply lead-in wires, and the first end of every root multiply lead-in wire is welded in corresponding coil shunting tap; Loaded capacity-regulated switch, connects the second end of every root multiply lead-in wire.This three-phase power transformer is owing to using multiply lead-in wire connecting coil tap and loaded capacity-regulated switch, therefore relative to the paper-covered copper flat wire of prior art, softlyer more easily to bend, easy operation, and use Wiring nose sub-connection on load tap changer, than the simmering and bending of copper strap wire loop connect more convenient, more reliable.Therefore scheme of the present utility model reduces the labour intensity of workman, improves efficiency, ensure that processing quality.
Description
Technical field
The utility model relates to field transformer, particularly relates to a kind of three-phase power transformer.
Background technology
In prior art, the low voltage lead structure of three-phase power transformer (such as the loaded capacity-regulated three-phase power transformer of S11-M.ZT type) generally adopts paper-covered copper flat wire to be connected with on-load shunting switch as tap lead.Paper bag flat type copper wire due to hardness higher, therefore inconvenient workman operates, especially be connected with carry capacitance switch time, need that simmering and bending are carried out to copper strap wire and loop, be more difficult to operation.Therefore the program makes the inefficiency of workman, labour intensity large.
Utility model content
An object of the present utility model is the three-phase power transformer that a kind of structure will be provided simple, easy to operate.
To achieve these goals, the utility model provides a kind of three-phase power transformer, comprise iron core and be wound in three groups of coils on three stem stems of described iron core respectively, often organize described coil and comprise a low-voltage coil and a high-tension coil be wound in outside described low-voltage coil, often organize described coil and there are two coil shunting taps, also comprise: 6 multiply lead-in wires, described in every root, the first end of multiply lead-in wire is welded in corresponding coil shunting tap; Loaded capacity-regulated switch, connects the second end of multiply lead-in wire described in every root.
Alternatively, described in every root, the second end of multiply lead-in wire is connected by wiring nose with described loaded capacity-regulated switch.
Alternatively, described three-phase power transformer also comprises: insulation folder, is fixed on transformer bracket, clamps through the multiply lead-in wire in it.
Alternatively, described insulation folder is wooden.
Alternatively, described three-phase power transformer also comprises: attached insulation, be wrapped in described multiply lead-in wire with the bearing of described insulation folder, and clamped by described insulation folder.
Alternatively, multiply lead-in wire described in every root is by strap colligation.
Alternatively, described three-phase power transformer also comprises: former line, and one end is connected to transformer low voltage sleeve pipe by lug plate, and the other end connects described low-voltage coil respectively.Alternatively, on described former line, cover has outlet casing tube.
Alternatively, described three-phase power transformer also comprises: copper busbar, is connected respectively with the last head of three low-voltage coils, draws a lead-in wire be connected to transformer zero phase sleeve pipe by lug plate from described copper busbar.
Alternatively, described three-phase power transformer is the loaded capacity-regulated three-phase power transformer of S11-M.ZT type.
Three-phase power transformer of the present utility model is owing to using multiply lead-in wire connecting coil tap and loaded capacity-regulated switch, therefore relative to the paper-covered copper flat wire of prior art, softlyer more easily to bend, easy operation, and use Wiring nose sub-connection on load tap changer, than the simmering and bending of copper strap wire loop connect more convenient, more reliable.Therefore scheme of the present utility model reduces the labour intensity of workman, improves efficiency, ensure that processing quality.
According to hereafter by reference to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will understand above-mentioned and other objects, advantage and feature of the present utility model more.
Accompanying drawing explanation
Hereinafter describe specific embodiments more of the present utility model with reference to the accompanying drawings by way of example, and not by way of limitation in detail.Reference numeral identical in accompanying drawing denotes same or similar parts or part.It should be appreciated by those skilled in the art that these accompanying drawings may not be drawn in proportion.In accompanying drawing:
Fig. 1 is the front view of the three-phase power transformer according to the utility model embodiment;
Fig. 2 is the vertical view of three-phase power transformer shown in Fig. 1;
Fig. 3 is the connection diagram of the loaded capacity-regulated switch of three-phase power transformer shown in Fig. 1 and the coil of described three-phase power transformer.
Embodiment
Fig. 1 is the front view of the three-phase power transformer according to the utility model embodiment, and Fig. 2 is the vertical view of three-phase power transformer shown in Fig. 1.In the embodiment shown in Fig. 1, Fig. 2, the utility model discloses a kind of three-phase power transformer, an iron core has three stem stems, each stem stem is wound with one group of coil.Often organize coil and comprise a low-voltage coil and a high-tension coil be wrapped in outside low-voltage coil.Corresponding three power supply phases, often organize described coil and have two coil shunting taps.This three-phase power transformer can also comprise: 6 multiply lead-in wires 7, and described in every root, the first end of multiply lead-in wire 7 is welded in corresponding coil shunting tap (namely a, b, c phase coil tap is lifted one's head); Loaded capacity-regulated switch 9, connects the second end of multiply lead-in wire 7 described in every root.Described in every root, the second end of multiply lead-in wire 7 is connected by wiring nose 8 with loaded capacity-regulated switch 9.The loaded capacity-regulated switch 9 of three-phase power transformer and the connection of the low pressure winding of described three-phase power transformer are as shown in Figure 3.As Figure 1-3.A, b, c are respectively the live wire of three low-voltage coil entirety, namely the starting of coil; X, y, z is respectively the last head of three low-voltage coil entirety.Wherein each low-voltage coil inside is divided into again three parts, and first two section is drawn again one respectively and started (a1, b1, c1/a2, b2, c2) and draw a last head (x1, y1, z1/ x2, y2, z2) respectively.Part I and Part II disconnect, and Part III and Part II are that single line gets off.Therefore, a, b, c are starting of low-voltage coil, and a1, b1, c1 are starting of first paragraph low-voltage coil; X1, y1, z1 are the last head of first paragraph low-voltage coil.
In the embodiment shown in Fig. 1, Fig. 2, three-phase power transformer can also comprise insulation folder (such as low pressure wood clamp part 6), and it is fixed on transformer bracket, clamps through the multiply lead-in wire 7 in it.Meet insulation distance when fixing to enable tap lead, it is the cardboard of 0.2mm that described multiply lead-in wire 7 can also be enclosed with the attached 5(of insulation such as thickness with the bearing of described low pressure wood clamp part 6), then clamped by wood clamp part together.The lead-in wire of different coil is clipped on wood clamp part simultaneously, when not adding attached insulation, even if disruptive discharge can not be formed by the material of wood clamp part between the lead-in wire of different coil, but also may form creepage electric discharge (flashover) by the surface of wood clamp part, ensureing on the distance basis that can not puncture, increasing attached insulation 5 can allow the creepage distance between lead-in wire have more this section walked along paperboard surface, adds electrical distance, improves flashover electric discharge difficulty.In order to the folder that insulate does not destroy the insulation of multiply lead-in wire 7, strap can also be adopted to carry out colligation to multiply lead-in wire 7.
In an embodiment of the present utility model, three-phase power transformer can comprise former line 1, and its one end is connected to transformer low voltage sleeve pipe by lug plate, and the other end is connection transformer low-voltage coil respectively.。Described former line 1 can overlap the outlet casing tube having insulation.Pin configuration is started by former line 1(transformer coil) lift one's head welding lug plate 2 as live wire tap, joint sleeve conducting rod (transformer a, b, c phase sleeve pipe).Former line refer to low-voltage coil starts around line, it is identical with the wire of low-voltage coil, is also called " live wire " of low pressure, is connected with low-tension bushing.Tap lead (in other words, multiply go between) is on high-tension coil, and it draws from the different numbers of turn of high-tension coil and be connected to the effect that shunting switch plays regulation voltage.
In another embodiment of the present utility model, three-phase power transformer also can comprise copper busbar 4, and it is connected respectively with the last head of three low-voltage coils, and draws a lead-in wire from described copper busbar and be connected to transformer zero phase sleeve pipe by lug plate.
Actual use and install time, need according to the transformer of different capabilities determine multiply lead-in wire 7 sectional area.After selected multiply lead-in wire 7, carry out insulating wrapping (such as using strap) to multiply lead-in wire 7, determine the length of every root multiply lead-in wire 7, that carries out that multiply lead-in wire 7 lifts one's head with corresponding coil tap welds, and processes accordingly, guarantee electrical strength after welding.Determine the opening size that low pressure wood clamp part 6 is corresponding, use low pressure wood clamp part 6 pairs of multiply lead-in wires 7 to be fixed, and wrap up attached insulation 5 and strap.Low pressure wood clamp part 6 can use bolt 3, nut, packing ring to be fixed.Said structure is arranged, ensures reasonable, attractive in appearance and up-to-standard.Select suitable wiring nose 8, use wiring nose 8 to be connected on load tap changer in corresponding multiply lead-in wire 7, arrange.Compared with prior art, scheme of the present utility model reduces the labour intensity of workman, improves efficiency.
It should be noted that, the three-phase power transformer mentioned in embodiment of the present utility model can be the loaded capacity-regulated three-phase power transformer of S11-M.ZT type, also can be other three-phase power transformers satisfied condition.
So far, those skilled in the art will recognize that, although multiple exemplary embodiment of the present utility model is illustrate and described herein detailed, but, when not departing from the utility model spirit and scope, still can directly determine or derive other modification many or amendment of meeting the utility model principle according to content disclosed in the utility model.Therefore, scope of the present utility model should be understood and regard as and cover all these other modification or amendments.
Claims (10)
1. a three-phase power transformer, comprise iron core and be wound in three groups of coils on three stem stems of described iron core respectively, often organize described coil and comprise a low-voltage coil and a high-tension coil be wound in outside described low-voltage coil, often organize described coil and there are two coil shunting taps, it is characterized in that, also comprise:
6 multiply lead-in wires, described in every root, the first end of multiply lead-in wire is welded in corresponding coil shunting tap;
Loaded capacity-regulated switch, connects the second end of multiply lead-in wire described in every root.
2. three-phase power transformer according to claim 1, is characterized in that,
Described in every root, the second end of multiply lead-in wire is connected by wiring nose with described loaded capacity-regulated switch.
3. three-phase power transformer according to claim 2, is characterized in that, also comprises:
Insulation folder, is fixed on transformer bracket, clamps through the multiply lead-in wire in it.
4. three-phase power transformer according to claim 3, is characterized in that,
Described insulation folder is wooden.
5. three-phase power transformer according to claim 3, is characterized in that, also comprises:
Attached insulation, be wrapped in described multiply lead-in wire with the bearing of described insulation folder, and clamped by described insulation folder.
6. three-phase power transformer according to claim 5, is characterized in that,
Described in every root, multiply lead-in wire is by strap colligation.
7. three-phase power transformer according to claim 1, is characterized in that, also comprises:
Former line, one end is connected to transformer low voltage sleeve pipe by lug plate, and the other end connects described low-voltage coil respectively.
8. three-phase power transformer according to claim 7, is characterized in that,
On described former line, cover has outlet casing tube.
9. three-phase power transformer according to claim 8, is characterized in that, also comprises:
Copper busbar, is connected respectively with the last head of three described low-voltage coils, draws a lead-in wire be connected to transformer zero phase sleeve pipe by lug plate from described copper busbar.
10. the three-phase power transformer according to any one of claim 1-9, is characterized in that,
Described power transformer is the loaded capacity-regulated power transformer of S11-M.ZT type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520411403.5U CN204651139U (en) | 2015-06-16 | 2015-06-16 | A kind of three-phase power transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520411403.5U CN204651139U (en) | 2015-06-16 | 2015-06-16 | A kind of three-phase power transformer |
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| CN204651139U true CN204651139U (en) | 2015-09-16 |
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| CN201520411403.5U Active CN204651139U (en) | 2015-06-16 | 2015-06-16 | A kind of three-phase power transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113948292A (en) * | 2021-10-27 | 2022-01-18 | 保定保菱变压器有限公司 | Novel transformer on-load voltage regulation structure and method |
| CN114156070A (en) * | 2021-12-30 | 2022-03-08 | 济南清河电气有限公司 | Oil-immersed transformer |
-
2015
- 2015-06-16 CN CN201520411403.5U patent/CN204651139U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113948292A (en) * | 2021-10-27 | 2022-01-18 | 保定保菱变压器有限公司 | Novel transformer on-load voltage regulation structure and method |
| CN114156070A (en) * | 2021-12-30 | 2022-03-08 | 济南清河电气有限公司 | Oil-immersed transformer |
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