CN209087542U - Low voltage lead structure and distribution transformer - Google Patents
Low voltage lead structure and distribution transformer Download PDFInfo
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- CN209087542U CN209087542U CN201822066681.8U CN201822066681U CN209087542U CN 209087542 U CN209087542 U CN 209087542U CN 201822066681 U CN201822066681 U CN 201822066681U CN 209087542 U CN209087542 U CN 209087542U
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- copper bar
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- low pressure
- lead copper
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Abstract
The utility model is suitable for technical field of transformer equipment, provides a kind of low voltage lead structure and distribution transformer.Low voltage lead structure includes a phase low pressure winding, b phase low pressure winding, c phase low pressure winding, first lead copper bar, the second lead copper bar, third lead copper bar, 0 phase copper bar, the 4th lead copper bar, the 5th lead copper bar and the 6th lead copper bar, first lead copper bar length is maximum, second lead copper bar length is minimum, for b phase low pressure winding tail end to the communication path longest of neutral point, the communication path of a phase low pressure winding tail end to neutral point is most short.Distribution transformer includes low voltage lead structure.Low voltage lead structure and transformer provided by the utility model pass through the 5th lead copper bar of setting and the 6th lead copper bar, make the tail end of b phase low pressure winding to the communication path longest of neutral point, the communication path of tail end to the neutral point of a phase low pressure winding is most short, low-voltage lead D.C. resistance unbalance factor is substantially reduced, while relatively reducing material consumption.
Description
Technical field
The utility model belongs to technical field of transformer equipment, more specifically, be related to a kind of low voltage lead structure and
Distribution transformer.
Background technique
Referring to Figure 1 and Fig. 2, distribution transformer low-pressure side is since voltage is low, electric current is big, and low pressure winding the number of turns is few, lead
Length proportion it is accordingly larger.The length ratio a phase and c of the b phase head end lead of distribution transformer low voltage lead structure at present
The head end wire length of phase obviously wants short, and the length ratio a phase of b phase tail end lead and the head end wire length of c phase are also obvious short,
The result is that b phase terminal copper bar ratio a phase terminal copper bar and c phase terminal copper bar are all much smaller, so that the D.C. resistance of low-voltage lead is not
Balanced ratio is not easy to meet the required value of national Specification, causes the unqualified of Transformer Plant Test.
Fig. 3 and Fig. 4 are referred to, a kind of improved low voltage lead structure connects copper in the tail end of a, b, c three-phase low-voltage winding
Increase the copper bar of a same specification on row, while increasing the copper of a same specification in a phase and c phase head end connecting copper bar
Row.This improved low voltage lead structure can reduce low-voltage lead D.C. resistance unbalance factor to a certain extent, but effect is not
Obviously, while material (copper bar) consumption is considerably increased.
Utility model content
The purpose of this utility model is to provide a kind of low voltage lead structures, it is intended to solve low-voltage lead in the prior art
Structure cannot be considered in terms of the technical issues of relatively rarely increasing consumptive material again while reducing resistance unbalance rate.
In order to achieve the above purposes, the technical solution adopted by the utility model is: provides a kind of low voltage lead structure, including a
Phase low pressure winding, b phase low pressure winding, c phase low pressure winding, the head end for connecting a phase low pressure winding and a phase connection piece
First lead copper bar, the second lead copper bar of the head end for connecting the b phase low pressure winding and b phase connection piece, for connecting
The third lead copper bar of the head end of the c phase low pressure winding and c phase connection piece, 0 phase copper bar and for connecting the 0 phase copper bar
With the 4th lead copper bar of 0 phase connection piece, the first lead copper bar, the second lead copper bar and the third lead copper bar
Resistivity it is identical with section, and the length of the first lead copper bar is greater than the length of the third lead copper bar, described the
The length of three lead copper bars is greater than the length of the second lead copper bar, and the low voltage lead structure further includes described for connecting
5th lead copper bar of the tail end of a phase low pressure winding and the tail end of the c phase low pressure winding and for connecting the b phase low pressure
6th lead copper bar of the tail end of winding and the tail end of the c phase low pressure winding；The 5th lead copper bar and the described 6th draws
The resistivity of line copper bar is identical with section；The tail end of a phase low pressure winding is connected with the X point on the 5th lead copper bar,
The tail end of the c phase low pressure winding is connected with the Z point on the 5th lead copper bar, the tail end of the b phase low pressure winding and institute
The Y point stated on the 6th lead copper bar is connected, and the 6th lead copper bar is connected with the Z point on the 5th lead copper bar, and described 0
Phase copper bar is connected with 0 ' o'clock on the 5th lead copper bar, and the communication path of the X point to the 0 ' point is less than the Z point and arrives
The communication path of the 0 ' point, the communication path of the Z point to the 0 ' point are less than the Y point to the access of the 0 ' point
Diameter.
Further, the X point and the distribution of Z point are located at the both ends of the 5th lead copper bar.
Further, the Y point is located at one end of the 6th lead copper bar, the other end of the 6th lead copper bar with
The Z point on the 5th lead copper bar is connected, and the length of the 6th lead copper bar is less than the 5th lead copper bar
Length.
Further, the 0 phase copper bar is between a phase low pressure winding and the b phase low pressure winding.
Further, the tail end of the 0 phase copper bar by the 7th lead copper bar with it is described on the 5th lead copper bar
0 ' point is connected.
Further, the 7th lead copper bar is the Z-shaped copper bar with bending part.
Further, the 6th lead copper bar is the Z-shaped copper bar with bending part.
Further, the 5th lead copper bar is plate shape copper bar.
The another object of the utility model is to provide a kind of distribution transformer, including above-mentioned low voltage lead structure.
A kind of low voltage lead structure and distribution transformer provided by the utility model compared with prior art, are used by setting
In the 5th lead copper bar of the tail end z of tail end x and c the phase low pressure winding of connection a phase low pressure winding and for connecting b phase low pressure
The 6th lead copper bar of the tail end z of tail end y and c the phase low pressure winding of winding, makes the tail end y of b phase low pressure winding to neutral point 0
The communication path of communication path longest, tail end x to the neutral point 0 of a phase low pressure winding is most short, and above structure can be set by length
Set make low voltage lead structure three-phase provided by the embodiment of the utility model each copper bar length (i.e. corresponding tail end lead copper bar and
The sum of the length of corresponding head end lead copper bar) close to equal, so that low-voltage lead D.C. resistance unbalance factor is substantially reduced,
Low voltage lead structure relative to other improvements simultaneously, reduces material consumption.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the schematic diagram of low voltage lead structure in the prior art；
The K direction view of Fig. 2 Fig. 1；
Fig. 3 is a kind of schematic diagram of improved low voltage lead structure；
The K direction view of Fig. 4 Fig. 3；
Fig. 5 is the schematic diagram of low voltage lead structure provided by the embodiment of the utility model；
The K direction view of Fig. 6 Fig. 5.
Wherein, each appended drawing reference in figure:
1-a phase low pressure winding；2-b phase low pressure winding；3-c phase low pressure winding；4- first lead copper bar；5- the second lead copper
Row；6- third lead copper bar；The 6th lead copper bar of 7-；The 5th lead copper bar of 8-；9-0 phase copper bar；10-c phase connection piece；11-
Seven lead copper bars.
Specific embodiment
In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
It should be noted that term " on ", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outside" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model
It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure
It makes and operates, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features." multiple ", " several " are meant that two in the description of the present invention,
Or it is more than two, unless otherwise specifically defined.
Fig. 5 and Fig. 6 are referred to, now the embodiment of low voltage lead structure provided by the utility model is illustrated.Low pressure
Pin configuration, including a phase low pressure winding 1, b phase low pressure winding 2, c phase low pressure winding 3, the head for connecting a phase low pressure winding 1
Second lead of the first lead copper bar 4 of end and a phase connection piece, the head end for connecting b phase low pressure winding 2 and b phase connection piece
It copper bar 5, the third lead copper bar 6 of the head end for connecting c phase low pressure winding 3 and c phase connection piece 10,0 phase copper bar 9 and is used for
Connect the 4th lead copper bar of the 0 phase connection piece of phase copper bar 9 and 0.A phase connection piece, b phase connection piece, c phase connection piece 10 and 0 connect
Line piece is all the electrically connected end in distribution box.
First lead copper bar 4, the resistivity of the second lead copper bar 5 and third lead copper bar 6 and section (structure) it is identical.For
Make low voltage lead structure provided by the embodiment of the utility model is opposite with each electrically connected end of distribution box be centrally located, first
The length of lead copper bar 4 is greater than the length of third lead copper bar 5, and the length of third lead copper bar 6 is greater than the second lead copper bar 5
Length.Low voltage lead structure provided by the embodiment of the utility model further includes tail end x and the c phase for connecting a phase low pressure winding 1
The 5th lead copper bar 8 of the tail end z of low pressure winding 3 and tail end y and c phase low pressure winding 3 for connecting b phase low pressure winding 2
Tail end z the 6th lead copper bar 7.
5th lead copper bar 8 and the 6th lead copper bar 7 form low voltage lead structure provided by the embodiment of the utility model
Tail end lead copper bar, the resistivity and section (structure) of the 5th lead copper bar 8 and the 6th lead copper bar 7 are identical；A phase low pressure winding
1 tail end x is connected with the 5th lead copper bar 8, and the tail end z of c phase low pressure winding 3 is connected with the 5th lead copper bar 8, b phase low pressure around
The tail end y of group 2 is connected with the 6th lead copper bar 7, the 6th lead copper bar 7 and the 5th lead copper bar 8 with c phase low pressure winding 3
Tail end z is connected, and 0 phase copper bar 9 is connected with 0 ' o'clock on the 5th lead copper bar 8, and 0 ' point is neutral point.It is pointed out here that above-mentioned
" connection " or " connected " although the mechanical connection referred to because being mechanical connection between electric conductor, here
Mechanical connection also can bring electrical connection to act on simultaneously.
On tail end lead copper bar, the communication path (conductive communication path) of tail end x to the 0 ' point of a phase low pressure winding 1 is
X0 ', i.e., on the 5th lead copper bar 8 tail end x point to 0 ' point between path distance.Tail end envelope line copper bar on, c phase low pressure around
The communication path (conductive communication path) of tail end z to the 0 ' point of group 3 is z0 ', i.e., tail end z point is to 0 ' on the 5th lead copper bar 8
Path distance between point.On tail end lead copper bar, the communication path of tail end y to the 0 ' point of b phase low pressure winding 2 (is led
Electrical communication path) it is y0 ', the communication path of tail end y point to the 0 ' point is needed by tail end z point, i.e. y0 ' is equal to and draws the 5th
On line copper bar 8 tail end z point to 0 ' point between path distance and on the 6th lead copper bar 8 tail end y point between tail end z point
The sum of path distance.By setting, z0 ' is set to be greater than x0 ', it is clear that y0 ' is naturally larger than z0 '.
In low pressure winding head end lead copper bar, the length longest (i.e. resistance is maximum) of first lead copper bar 4, third lead
The length of copper bar 6 is taken second place, and the second lead copper bar 5 is most short.In low pressure winding tail end lead copper bar, the tail end of b phase low pressure winding 2
Communication path y0 ' longest (i.e. resistance maximum) of the y to neutral point, the communication path of the tail end z of c phase low pressure winding 3 to neutral point
Z0 ' takes second place, and the communication path x0 ' of tail end x to the neutral point of a phase low pressure winding 1 is most short.In this way, the resistance of head end lead copper bar
For imbalance by the resistance unbalance institute " neutralization " of tail end lead copper bar, i.e., above structure can be arranged by length keeps this practical new
(i.e. corresponding tail end lead copper bar and corresponding head end draw each copper bar length for the low voltage lead structure three-phase that type embodiment provides
The sum of the length of line copper bar) close to equal, so that low-voltage lead D.C. resistance unbalance factor substantially reduces, while relative to other
Improved low voltage lead structure, reduces material consumption.
Low voltage lead structure provided by the embodiment of the utility model compared with prior art, by be arranged for connecting a phase
The 5th lead copper bar and the tail for connecting b phase low pressure winding of the tail end z of tail end x and c the phase low pressure winding of low pressure winding
The 6th lead copper bar for holding the tail end z of y and c phase low pressure winding, makes the tail end y of b phase low pressure winding to the communication path of neutral point 0
The communication path of longest, tail end x to the neutral point 0 of a phase low pressure winding is most short, and above structure can be arranged by length makes this reality
With each copper bar length (corresponding tail end lead copper bar and the corresponding head end of the low voltage lead structure three-phase that new embodiment provides
The sum of the length of lead copper bar) close to equal, so that low-voltage lead D.C. resistance unbalance factor is substantially reduced, while relative to
The low voltage lead structure of other improvements, reduces material consumption.
Fig. 5 and Fig. 6 are referred to, as a kind of specific embodiment of low voltage lead structure provided by the utility model, tail
End x and tail end z point are connected at the both ends of the 5th lead copper bar 8, so that the length of material of the 5th lead copper bar 8 can be most
Limits use.
Fig. 5 and Fig. 6 are referred to, as a kind of specific embodiment of low voltage lead structure provided by the utility model, is
Use the length of material of tail end lead copper bar to greatest extent, tail end y is connected to one end of the 6th lead copper bar 7, and the 6th
The other end of lead copper bar 7 is connected with the 5th lead copper bar 8 and tail end z, and the length of the 6th lead copper bar 7 is less than the 5th lead
The length of copper bar 8.
As a kind of specific embodiment of low voltage lead structure provided by the utility model, the length of the 6th lead copper bar 7
Degree is the half of 8 length of the 5th lead copper bar.
Fig. 5 and Fig. 6 are referred to, as a kind of specific embodiment of low voltage lead structure provided by the utility model, 0 phase
Copper bar 9 is located between a phase low pressure winding 1 and b phase low pressure winding 2.
Fig. 5 and Fig. 6 are referred to, as a kind of specific embodiment of low voltage lead structure provided by the utility model, 0 phase
The tail end of copper bar 9 is connected by the 7th lead copper bar 11 with 0 ' o'clock on the 5th lead copper bar 8.Tail end i.e. 0 point of 0 phase copper bar 9,
Put the feelings that equipped with the 7th lead copper bar 11, can be fixed in 0 phase copper bar, 9 position by the 7th lead copper bar 11 of setting for 0 point and 0 '
Under condition, it is conveniently adjusted 0 ' o'clock position on the 5th lead copper bar 8.
Fig. 6 is referred to, as a kind of specific embodiment of low voltage lead structure provided by the utility model, the 7th lead
Copper bar 11 is the Z-shaped copper bar with bending part, the 7th lead copper bar 11 can be made to only have one end to be bonded phase with 0 ' o'clock by bending part
Even, other positions of the 7th lead copper bar 11 are then with the 5th lead copper bar 8 in not contact condition.
Fig. 6 is referred to, as a kind of specific embodiment of low voltage lead structure provided by the utility model, the 6th lead
Copper bar 7 is the Z-shaped copper bar with bending part, the 6th lead copper bar 7 can be made to only have one end to be bonded with Z point by bending part and is connected,
Other positions of 6th lead copper bar 7 are then with the 5th lead copper bar 8 in not contact condition.
Fig. 6 is referred to, as a kind of specific embodiment of low voltage lead structure provided by the utility model, the 5th lead
Copper bar 8 is plate shape copper bar, i.e. the 5th lead copper bar 8 does not have bending part.
The utility model additionally provides a kind of distribution transformer, including above-mentioned low voltage lead structure.
Distribution transformer provided by the embodiment of the utility model is compared with prior art, low for connecting a phase by being arranged
Press the 5th lead copper bar of the tail end z of tail end x and c the phase low pressure winding of winding and the tail end y for connecting b phase low pressure winding
With the 6th lead copper bar of the tail end z of c phase low pressure winding, make the tail end y of b phase low pressure winding to neutral point 0 communication path most
Long, the communication path of tail end x to the neutral point 0 of a phase low pressure winding is most short, and above structure can be arranged by length keeps this practical
Each copper bar length (i.e. corresponding tail end lead copper bar and the corresponding head end for the low voltage lead structure three-phase that new embodiment provides
The sum of the length of lead copper bar) close to equal, so that low-voltage lead D.C. resistance unbalance factor is substantially reduced, while relative to
The low voltage lead structure of other improvements, reduces material consumption.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (9)
1. low voltage lead structure, including it is a phase low pressure winding, b phase low pressure winding, c phase low pressure winding, low for connecting a phase
Press the head end of winding and first lead copper bar, the head end and b phase connection for connecting the b phase low pressure winding of a phase connection piece
Second lead copper bar of piece, the third lead copper bar of the head end for connecting the c phase low pressure winding and c phase connection piece, 0 phase copper
Row and the 4th lead copper bar for connecting the 0 phase copper bar and 0 phase connection piece, the first lead copper bar, described second
Lead copper bar is identical with section with the resistivity of the third lead copper bar, and the length of the first lead copper bar is greater than described
The length of third lead copper bar, the length of the third lead copper bar are greater than the length of the second lead copper bar, and feature exists
In further including the 5th lead copper bar for connecting a phase low pressure winding and the c phase low pressure winding and for connecting
State the 6th lead copper bar of b phase low pressure winding and the c phase low pressure winding；The 5th lead copper bar and the 6th lead copper
The resistivity of row is identical with section；The tail end x of a phase low pressure winding is connected with the 5th lead copper bar, the b phase low pressure
The tail end y of winding is connected with the 6th lead copper bar, the 6th lead copper bar and the 5th lead copper bar with the c
The tail end z of phase low pressure winding is connected, and the 0 phase copper bar is connected with 0 ' o'clock on the 5th lead copper bar, the tail end x to institute
The communication path for stating 0 ' point is less than communication path of the tail end z to the 0 ' point, access of the tail end z to the 0 ' point
Diameter is less than the tail end y to the communication path of the 0 ' point.
2. low voltage lead structure as described in claim 1, which is characterized in that the tail end x and the tail end z are connected respectively to
The both ends of the 5th lead copper bar.
3. low voltage lead structure as claimed in claim 2, which is characterized in that the tail end y is connected to the 6th lead copper
The other end of one end of row, the 6th lead copper bar is connected with the 5th lead copper bar and the tail end z, and the described 6th
The length of lead copper bar is less than the length of the 5th lead copper bar.
4. low voltage lead structure as described in claim 1, which is characterized in that the 0 phase copper bar is located at a phase low pressure winding
Between the b phase low pressure winding.
5. low voltage lead structure as described in claim 1, which is characterized in that the tail end of the 0 phase copper bar passes through the 7th lead
Copper bar is connected with 0 ' o'clock on the 5th lead copper bar.
6. low voltage lead structure as claimed in claim 5, which is characterized in that the 7th lead copper bar is with bending part
Z-shaped copper bar.
7. low voltage lead structure as claimed in any one of claims 1 to 6, which is characterized in that the 6th lead copper bar be with
The Z-shaped copper bar of bending part.
8. low voltage lead structure as claimed in claim 7, which is characterized in that the 5th lead copper bar is plate shape copper bar.
9. distribution transformer, which is characterized in that including low voltage lead structure such as of any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822066681.8U CN209087542U (en) | 2018-12-10 | 2018-12-10 | Low voltage lead structure and distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822066681.8U CN209087542U (en) | 2018-12-10 | 2018-12-10 | Low voltage lead structure and distribution transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209087542U true CN209087542U (en) | 2019-07-09 |
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ID=67126817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822066681.8U Active CN209087542U (en) | 2018-12-10 | 2018-12-10 | Low voltage lead structure and distribution transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209087542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114566361A (en) * | 2021-12-30 | 2022-05-31 | 广东电网有限责任公司 | Transformer lead method |
-
2018
- 2018-12-10 CN CN201822066681.8U patent/CN209087542U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114566361A (en) * | 2021-12-30 | 2022-05-31 | 广东电网有限责任公司 | Transformer lead method |
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