CN202059315U - Middle-voltage current transformer power busbar structure - Google Patents
Middle-voltage current transformer power busbar structure Download PDFInfo
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- CN202059315U CN202059315U CN2011201593788U CN201120159378U CN202059315U CN 202059315 U CN202059315 U CN 202059315U CN 2011201593788 U CN2011201593788 U CN 2011201593788U CN 201120159378 U CN201120159378 U CN 201120159378U CN 202059315 U CN202059315 U CN 202059315U
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- pcb board
- current transformer
- electric capacity
- busbar structure
- transformer power
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Abstract
The utility model discloses a middle-voltage current transformer power busbar structure, which comprises a printed circuit board (PCB), a voltage-sharing resistor, a grounding resistor and a plurality of capacitors, wherein the capacitors are detachably fixed on the PCB and are electrically connected with the PCB, a detection terminal used for merging voltage detection wires is arranged on the PCB, and the voltage-sharing resistor, the grounding resistor and the detection terminal are electrically connected with the capacitors through the PCB. The middle-voltage current transformer power busbar structure adopts the PCB for connecting the capacitors with the voltage-sharing resistor, the grounding resistor and the detection terminal, the defects of complicated assembly, too large busbar loop and occupation of too much space because a copper bar is adopted for connecting the capacitors and too many cables are adopted in the whole busbar structure in the prior art are overcome, and the utility model thus provides the middle-voltage current transformer power busbar structure with the advantages that the layout is reasonable, the assembly efficiency is high, the busbar loop is small, and in addition, the heat generated by the voltage-sharing resistor does not directly influence capacitor insulation sheaths.
Description
Technical field
The utility model relates to a kind of middle volage current transformer power cell, in particular, relates to a kind of electric capacity busbar structure of middle volage current transformer power cell.
Background technology
Middle volage current transformer power cell belongs to core component in the unsteady flow complete set of equipments, and the electric capacity busbar structure of power cell is the key factor that influences properties of product.At present, as shown in Figure 1, the electric capacity busbar structure in the low capacity power cell realizes the connection in series-parallel of electric capacity 4 mostly by cascade copper bar 11 and cable 9,10.Fix a large amount of grading resistor 2 on the copper bar 11, the effect of grading resistor 2 in electric capacity busbar structure is the voltage that bear at balanced each electric capacity two ends, the equivalent d.c. resistance of avoiding causing because of capacitor leakage current does not wait, and then the phenomenon that do not wait of electric capacity 4 both end voltage that cause.The value of grading resistor 2 is far smaller than the equivalent d.c. resistance of electric capacity 4 usually.Earth resistance 3 needs extra support to be fixed on the casing, and also needs three cables to be connected with capacitor terminal as connecting line 10, and voltage detecting needs four cables to be connected with capacitor terminal as detection line 9.
The number of cables that this structure needs is many, and too much cable is difficult for colligation and is in a mess, and causes the increase that takes up room of busbar structure on the one hand, causes the assembling process complexity on the other hand, and length consuming time influences efficiency of assembling.Simultaneously, too much cable connection makes that also the busbar loop of this structure is very big.In addition, make grading resistor generate heat for a long time in the current transformer course of work,, therefore can cause the capacitive insulation crust aging, produce the safety risk because it directly is fixed on heat transferred electric capacity on the copper bar.
The utility model content
The technical problems to be solved in the utility model is, at adopting copper bar to connect electric capacity in the present electric capacity busbar structure, the defective that assembling complexity, the busbar loop that cable too much causes be excessive, too much take up room, provide a kind of rationally distributed, efficiency of assembling is high, the busbar loop is little and the grading resistor heat production does not directly influence the middle volage current transformer power busbar structure of capacitive insulation crust.
Problem to be solved in the utility model is achieved through the following technical solutions: construct a kind of middle volage current transformer power busbar structure, it comprises pcb board, grading resistor, earth resistance and a plurality of electric capacity, described electric capacity detachably is fixed on the pcb board and with pcb board and is electrically connected, described pcb board is provided with the detection terminal that is used to merge the voltage detecting line, and described grading resistor, earth resistance and detection terminal all are electrically connected with electric capacity by pcb board.
In above-mentioned in the volage current transformer power busbar structure, the Copper Foil serial or parallel connection by being provided with on the pcb board between the described electric capacity.
In the volage current transformer power busbar structure, described pcb board is provided with guide hole in above-mentioned, and described electric capacity is fixed in the guide hole of pcb board by capacitor terminal.
In the volage current transformer power busbar structure, described capacitor terminal is a double-screw bolt with threaded hole in above-mentioned, described double-screw bolt be plugged in the described guide hole and by screw on pcb board.
In above-mentioned in the volage current transformer power busbar structure, the electric capacity on the described pcb board is linear, annular or array format.
In the volage current transformer power busbar structure, described grading resistor and earth resistance are welded on the pcb board in above-mentioned.
In above-mentioned in the volage current transformer power busbar structure, described electric capacity and grading resistor and earth resistance branch are located at the different plate faces of pcb board.
In the volage current transformer power busbar structure, described pcb board is provided with a detection terminal in above-mentioned, and described detection terminal lays respectively on the different plate faces of pcb board with described electric capacity.
In the volage current transformer power busbar structure, described electric capacity is arranged in the centre of pcb board in above-mentioned, and described detection terminal is located at the end of pcb board, and described grading resistor and earth resistance are positioned at the both sides of the edge of the same plate face of pcb board.
In above-mentioned in the volage current transformer power busbar structure, described grading resistor and earth resistance are electrically connected with pcb board by cable or directly are electrically connected with the cable terminal set up on the capacitor terminal.
Implement middle volage current transformer power busbar structure of the present utility model, has following beneficial effect: in electric capacity busbar structure, adopt pcb board, replace copper bar to realize connection in series-parallel between each electric capacity by pcb board, replace detection line to realize voltage detecting by pcb board and detection terminal provided thereon, reduced the number of cables in the busbar structure effectively, further optimize the layout of busbar structure, reduced the busbar loop; Grading resistor is connected with electric capacity by pcb board, and the heat of having avoided grading resistor to produce directly influences the capacitive insulation crust.Therefore, the utility model assembles required time in implementation process can obviously reduce, and efficiency of assembling improves, and the heat of grading resistor generation simultaneously can directly not have influence on the capacitive insulation crust, has reduced the safety risk.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the middle volage current transformer power busbar structure of prior art;
Fig. 2 is the structural representation of the middle volage current transformer power busbar structure of the utility model embodiment.
Embodiment
As shown in Figure 2, a kind of middle volage current transformer power busbar structure comprises pcb board 1, grading resistor 2, earth resistance 3 and a plurality of electric capacity 4.Pcb board 1 is the strutting piece of electronic devices and components, also is the supplier who is electrically connected between the components and parts.In the present embodiment, electric capacity 4 is realized the connection in series-parallel that electric capacity 4 is mutual by the Copper Foil that is provided with on the pcb board 1, and realize electric capacity 4 respectively with being electrically connected of grading resistor 2 and earth resistance 3.Also be provided with the detection terminal 5 that is used to merge the voltage detecting line on the pcb board 1.Detection terminal 5 all can be set up in the plate face both sides of pcb board 1, and can set up at least one detection terminal 5.In the busbar structure of present embodiment, the position of detection terminal 5 and power cable to go out line position relevant, and then influence the layout of whole busbar structure and the size of busbar loop.For optimizing the line position that of power cable, reduce the busbar loop, only set up a detection terminal 5 in the present embodiment, and detection terminal 5 and electric capacity was located at the different plate faces of pcb board 1 in 4 minutes, described detection terminal 5 is electrically connected with electric capacity 4 by the Copper Foil of arranging on the pcb board 1.
Grading resistor 2, earth resistance 3 and electric capacity 4 are the essential components and parts in the electric capacity busbar structure.In the present embodiment, grading resistor 2 and earth resistance 3 are welded on the pcb board 1, and electric capacity 4 is fixed in the guide hole 7 of pcb board 1 by the capacitor terminal (not shown).Described capacitor terminal is a double-screw bolt with threaded hole, and described double-screw bolt is plugged in the described guide hole 7 and by screw 6 and is fixed on the pcb board 1.Described guide hole 7 be built up on the pcb board 1, inwall and go up the through hole that lower limb all is provided with conductive layer or coats electric conducting material, in the present embodiment centre feed hole 7 and edge is provided with Copper Foil and is used for being electrically connected with capacitor terminal, the Copper Foil of arranging on guide hole 7 and the pcb board 1 is communicated with, and capacitor terminal is electrically connected with pcb board 1 by guide hole 7.The plate face both sides of pcb board 1 all can be connected with above-mentioned components and parts, and components and parts place plate face is relevant with the rationalization of whole busbar structure, and in the present embodiment, electric capacity 4 and grading resistor 2 and 3 of earth resistances lay respectively at the different plate faces of pcb board 1.
In addition, the position of grading resistor 2, earth resistance 3 and detection terminal 5 can be adjusted according to actual needs on the pcb board 1, be positioned at the end or the side of pcb board 1, grading resistor 2, earth resistance 3 and the position of detection terminal 5 on pcb board 1 do not influence the implementation result of power busbar structure in the utility model.In the present embodiment, detection terminal 5 and grading resistor 2 and earth resistance 3 are positioned at the same plate face of pcb board 1, and wherein, detection terminal 5 is located at the end of pcb board 1, and grading resistor 2 and earth resistance 3 are welded in the side of the same plate face of pcb board 1.
In actual application, the quantity of the electric capacity of middle volage current transformer power busbar structure and arrangement mode are determined by the position relation of other elements in busbar load capacity, busbar and the current transformer of current transformer.The utility model is used the connection that pcb board 1 is realized electric capacity 4, when the quantity of electric capacity 4 and arrangement mode change, the length of pcb board 1 and profile made corresponding adjustment after, can reach implementation result of the present utility model.That electric capacity can adopt is linear, annular or array format, and linear array comprises straight line and curve, and annular array comprises circle, ellipse, polygon arrangement etc., the array format row and column of can arranging according to actual needs.For example, when electric capacity 4 was the linear array of in-line in the busbar structure, pcb board 1 was for having the yi word pattern of certain width; Electric capacity 4 is square when arranging, and pcb board 1 is square; When electric capacity 4 was triangularly arranged, pcb board 1 was a triangle; When electric capacity 4 was array format, pcb board 1 was the profile of respective array.In the present embodiment, electric capacity 4 has adopted the yi word pattern arrangement, and accordingly, the profile of pcb board 1 is a yi word pattern.In addition, capacitor terminal can be with arbitrarily angled setting on pcb board 1, and above-mentioned angle refers to the line of two capacitor terminals of electric capacity 4 and the angle of pcb board 1 arbitrary side.According to the arrangement angle of capacitor terminal on pcb board 1, establish guide hole 7 at the correspondence position of pcb board 1, next can capacitor terminal be fixed on the pcb board 1, thereby realize fixedlying connected of pcb board 1 and electric capacity 4 by screw 6.For example, in the present embodiment, the capacitor terminal of two ends electric capacity 4 is parallel to the end of pcb board 1 vertically to be arranged, and it is horizontal that the capacitor terminal of intermediate capacitance 4 is parallel to the side of pcb board 1; Guide hole 7 on the pcb board 1 also is corresponding arrangement mode, and the guide hole 7 at two ends is parallel to the end of pcb board 1 vertically to be arranged, and it is horizontal that middle guide hole 7 is parallel to the side of pcb board 1.
In another execution mode of the present utility model, pcb board 1 still is used for the electrical connection of a plurality of electric capacity 4, grading resistor 2 and earth resistance 3 are not fixed on the pcb board, but adopt the fixing mode of casing, be that grading resistor 2 and earth resistance 3 are fixed on the casing, be electrically connected with pcb board 1 by cable, and further be electrically connected with electric capacity 4 by pcb board 1, can also directly be connected by cable with cable terminal 8, thereby realization is electrically connected with electric capacity 4, and described cable terminal 8 is built up on the capacitor terminal and with electric capacity and is electrically connected.Miscellaneous part connects the same.
Further, in another execution mode of the present utility model, pcb board 1 still is used for the electrical connection of a plurality of electric capacity 4, and grading resistor 2 is welded on pcb board 1, is electrically connected with electric capacity 4 by pcb board 1, but earth resistance 3 adopts the fixing mode of casing, other positions of volage current transformer are connected with pcb board 1 by cable then in being fixed on, and are electrically connected with electric capacity 4 by pcb board 1, earth resistance 3 also can directly be electrically connected with cable terminal 8 by cable, thus being electrically connected of realization and electric capacity 4.Miscellaneous part connects the same.
In addition, in another execution mode of the present utility model, pcb board 1 still is used for the electrical connection of a plurality of electric capacity 4, and earth resistance 3 is welded on pcb board 1, is electrically connected with electric capacity 4 by pcb board 1, but grading resistor 2 adopts the fixing mode of casing, other positions of volage current transformer are connected with pcb board 1 by cable then in being fixed on, and are electrically connected with electric capacity 4 by pcb board 1, grading resistor 2 also can directly be electrically connected with cable terminal 8 by cable, thus being electrically connected of realization and electric capacity 4.Miscellaneous part connects the same.
The above only is a preferred embodiment of the present utility model, not in order to restriction the utility model, all any modifications of being done in spirit of the present utility model and principle, is equal to and replaces or improvement etc., all should be included in the protection range of the present utility model.7
Claims (10)
1. volage current transformer power busbar structure in a kind, comprise grading resistor, earth resistance and a plurality of electric capacity, it is characterized in that, also comprise pcb board, described electric capacity detachably is fixed on the pcb board and with pcb board and is electrically connected, described pcb board is provided with the detection terminal that is used to merge the voltage detecting line, and described grading resistor, earth resistance and detection terminal all are electrically connected with electric capacity by pcb board.
2. volage current transformer power busbar structure in according to claim 1 is characterized in that the Copper Foil serial or parallel connection by being provided with on the pcb board between the described electric capacity.
3. volage current transformer power busbar structure in according to claim 1 is characterized in that described pcb board is provided with guide hole, and described electric capacity is fixed in the guide hole of pcb board by capacitor terminal.
4. according to claim 3 in volage current transformer power busbar structure, it is characterized in that described capacitor terminal is a double-screw bolt with threaded hole, described double-screw bolt be plugged in the described guide hole and by screw on pcb board.
5. volage current transformer power busbar structure in according to claim 1 is characterized in that, the electric capacity on the described pcb board is linear, annular or array format.
6. according to any described middle volage current transformer power busbar structure of claim 1-5, it is characterized in that described grading resistor and earth resistance are welded on the pcb board.
7. volage current transformer power busbar structure in according to claim 6 is characterized in that, described electric capacity and grading resistor and earth resistance branch are located at the different plate faces of pcb board.
8. volage current transformer power busbar structure in according to claim 6 is characterized in that described pcb board is provided with a detection terminal, and described detection terminal lays respectively on the different plate faces of pcb board with described electric capacity.
9. volage current transformer power busbar structure in according to claim 6, it is characterized in that, described electric capacity is arranged in the centre of pcb board, and described detection terminal is located at the end of pcb board, and described grading resistor and earth resistance are positioned at the both sides of the edge of the same plate face of pcb board.
According to claim 1-5 any one described in volage current transformer power busbar structure, it is characterized in that, described grading resistor and earth resistance be electrically connected with pcb board by cable or direct and capacitor terminal on the cable terminal set up be electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201593788U CN202059315U (en) | 2011-05-18 | 2011-05-18 | Middle-voltage current transformer power busbar structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201593788U CN202059315U (en) | 2011-05-18 | 2011-05-18 | Middle-voltage current transformer power busbar structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202059315U true CN202059315U (en) | 2011-11-30 |
Family
ID=45019278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201593788U Expired - Lifetime CN202059315U (en) | 2011-05-18 | 2011-05-18 | Middle-voltage current transformer power busbar structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202059315U (en) |
-
2011
- 2011-05-18 CN CN2011201593788U patent/CN202059315U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park B2 building 1-4 floor, building 6-10 Patentee after: Vitamin Technology Co., Ltd. Address before: 518057 Nanshan District science and Technology Industrial Park, Guangdong, Shenzhen Branch Road, No. Patentee before: Aimosheng Network Energy Source Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111130 |
|
| CX01 | Expiry of patent term |