CN203812707U - Dry type auto-transformer for motor voltage reduction starting - Google Patents
Dry type auto-transformer for motor voltage reduction starting Download PDFInfo
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- CN203812707U CN203812707U CN201420187039.4U CN201420187039U CN203812707U CN 203812707 U CN203812707 U CN 203812707U CN 201420187039 U CN201420187039 U CN 201420187039U CN 203812707 U CN203812707 U CN 203812707U
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Abstract
The utility model relates to a dry type auto-transformer for motor voltage reduction starting to effectively solve the problems that the voltage regulating is large in workload, low in efficiency and not prone to achievement, and potential safety hazards exist. According to the structure of the dry type auto-transformer for motor voltage reduction starting, iron cores are fixed to a base, a series winding and a common winding are arranged outside each iron core, two sections of each common winding are led out by means of middle voltage regulating tap changers through a terminal in the radius direction and are connected together in series through a connecting sheet (6) on an outer insulating boss (12) of the common winding, the head of each series winding is led out of the end of the winding, welded to a first wiring board on the upper portion of an auto-transformer body, fixed to an upper clamping piece through an insulator and connected with a power grid through an alternating current contactor and an air switch, the tail of each series winding is led out of the winding end, welded to a second wiring board together with the head of the corresponding common winding and fixed to a lower clamping piece through an insulator, the tail of each common winding is led out of the end of the winding, welded to a third wiring board and fixed to the upper clamping piece through an insulator, and the series windings and the common windings are vertically fixed between the upper clamping piece and the lower clamping piece in parallel in an alternate mode. The dry type auto-transformer is convenient to install and use, good in effect and safe in usage.
Description
Technical field
The utility model relates to power equipment, particularly a kind of motor reduced voltage starting dry type autotransformer.
Background technology
Transformer is requisite common equipment during electric power is carried, and state's built-in motor reduced voltage starting autotransformer is at present generally oil immersed type, secondary output end pressure regulation.Due to the problem existing in structure, in the time that motor reduced voltage starting needs pressure regulation (because of electric current large, generally there is no shunting switch), all to first output cable be laid down, change again to the gear that needs to regulate, this voltage regulating mode workload is large, and efficiency is low, and on dry type autotransformer, is difficult for realizing.And be not easy to require higher occasion motor starting in fire-protection rating, there is potential safety hazard, therefore, its improvement and bring new ideas is the technical problem that need to conscientiously solve.
Summary of the invention
For above-mentioned situation, for overcoming the defect of prior art, the object of the utility model is just to provide a kind of motor reduced voltage starting dry type autotransformer, can effectively solve pressure regulation workload large, and efficiency is low, is difficult for realizing and existing the problem of potential safety hazard.
The technical scheme that the utility model solves is, comprise base, iron core, series connection winding and common winding, iron core is fixed on base, series connection winding is sleeved on iron core, common winding is sleeved on series connection winding outside, and common winding has two sections, by middle part voltage regulating tap through terminal width to drawing, be cascaded through the brace that is placed in adjustable position on common winding external insulation boss, the middle part that forms common winding regulates the pressure adjusting structure of motor starting voltage; The first head of series connection winding is drawn winding overhang, be welded on the first terminal block of device body, and be fixed on upper clamping piece through insulator, as the input of transformer, get access to grid by A.C. contactor and air switch, series connection winding tail head is drawn winding overhang, is welded on the second terminal block of device body bottom with first of the head of common winding, be fixed on lower clamping piece through insulator, as the output termination motor of transformer; The tail head of common winding is drawn winding overhang, be welded on the 3rd terminal block of device body, be fixed on upper clamping piece through insulator, be joined together to form neutral point by A.C. contactor, series connection winding and common winding adopt poured with epoxy resin sectional circular cartridge type structure, and alternate parallel vertical is fixed between upper clamping piece and lower clamping piece.
The utility model is simple in structure, novel unique, easy to install, effective, has reduced the ampacity of tap terminal, uses safety, has good economic and social benefit.
Brief description of the drawings
Fig. 1 is structural front view of the present utility model.
Fig. 2 is elementary diagram of the present utility model.
Fig. 3 is series connection winding construction figure of the present utility model.
Fig. 4 is common winding structure chart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.
Provided by Fig. 1-4, the utility model comprises base, iron core, series connection winding and common winding, iron core 1 is fixed on base 10, series connection winding 8 is sleeved on iron core 1, common winding 9 be sleeved on series connection winding 8 outsides, common winding has two sections, by middle part voltage regulating tap 5 through terminal width to drawing, be cascaded through the brace 6 that is placed in adjustable position on common winding external insulation boss 12, the middle part that forms common winding regulates the pressure adjusting structure of motor starting voltage; The first head of series connection winding 8 is drawn winding overhang, be welded on the first terminal block 3 of device body, and be fixed on upper clamping piece 4a through insulator, as the input of transformer, get access to grid by A.C. contactor and air switch, series connection winding 8 tail heads are drawn winding overhang, are welded on the second terminal block 7 of device body bottom with first of the head of common winding, be fixed on lower clamping piece 4b through insulator upper, as the output termination motor of transformer; The tail head of common winding is drawn winding overhang, be welded on the 3rd terminal block 2 of device body, be fixed on upper clamping piece 4a through insulator, be joined together to form neutral point by A.C. contactor 11, series connection winding and common winding adopt poured with epoxy resin sectional circular cartridge type structure, and alternate parallel vertical is fixed between upper clamping piece and lower clamping piece.
In order to ensure result of use, base 10 is arranged at described device body bottom;
Described series connection winding 8 has 3 windings, and series connection the first winding has first A, series connection the second winding to have first B, the series connection tertiary winding to have first C, and each series connection winding has 3 corresponding tail heads, common winding 9 has 3 windings, public the first winding has first a, tail head x, public the second winding has first b, tail head y, the public tertiary winding has first c, tail head z, 3 common winding tail head x, y, z draws winding overhang and is welded on respectively on 3 points of terminal blocks of device body the 3rd terminal block 2, 3 first A of series connection winding, B, C draws on 3 points of terminal blocks that are welded on respectively device body the first terminal block 3, the tail head of each series connection winding is drawn from winding overhang, respectively with 3 first a of common winding, b, c is welded on 3 points of terminal blocks of device body bottom the second terminal block 7 together,
Described middle part voltage regulating tap 5 has 3 groups, be placed in respectively on the boss 12 of public the first winding, public the second winding, public tertiary winding external insulation, on each tap, there is tap brace, by the tap at two sections, common winding middle part 1., 2. with tap 3., be 4. connected, wherein 1., 2. communicate, tap 3., 4. communicate for tap.
Described device body is to be assembled together and to be formed by iron core, upper clamping piece, lower clamping piece, series connection winding and common winding;
Described series connection winding and common winding are to be all made up of insulated conductor coiling.
Can be found out by above-mentioned, the utility model comprises that Fig. 2 head A is connected with the A of Fig. 1 terminal block 3, and Fig. 2 head B is connected with the B of Fig. 1 terminal block 3, and Fig. 2 head C is connected with the C of Fig. 1 terminal block 3; Fig. 2 head a is connected with a of Fig. 1 terminal block 7, and Fig. 2 head b is connected with the b of Fig. 1 terminal block 7, and Fig. 2 head c is connected with the c of Fig. 1 terminal block 7; Fig. 2 tail x is connected with the x of Fig. 1 terminal block 2, and Fig. 2 tail y is connected with the y of Fig. 1 terminal block 2, and Fig. 2 tail z is connected with the z of Fig. 1 terminal block 2; 4. 3. 2. 1. 4. 3. 2. 1. public the first winding tap of Fig. 2 be connected with the tap in public the first winding of Fig. 1 respectively, 4. 3. 2. 1. 4. 3. 2. 1. public the second winding tap of Fig. 2 be connected with the tap in public the second winding of Fig. 1 respectively, and 4. 3. 2. 1. 4. 3. 2. 1. the public tertiary winding tap of Fig. 2 be connected with the tap in the public tertiary winding of Fig. 1 respectively.
Can be found out by said structure, the utility model provides a kind of motor reduced voltage starting dry type autotransformer, belongs to power system transformer manufacturing technology field.Require higher occasion in fire-protection rating, with dry type autotransformer replacement oil immersed type auto-transformer starting motor.Feature of the present utility model is that common winding, series connection winding adopt poured with epoxy resin sectional circular cartridge type, and wherein common winding adopts two sections of series connection, middle part voltage regulating.Adopt this voltage regulating mode to greatly reduce the ampacity of tap terminal, and while regulating motor starting voltage, only need conversion tap connection sheet, do not need dismounting cable, compared with the pressure regulation of end, have more superiority.
Claims (6)
1. a motor reduced voltage starting dry type autotransformer, comprise base, iron core, series connection winding and common winding, it is characterized in that, iron core (1) is fixed on base (10), series connection winding (8) is sleeved on iron core (1), common winding (9) is sleeved on series connection winding (8) outside, common winding has two sections, by middle part voltage regulating tap (5) through terminal width to drawing, be cascaded through the brace (6) that is placed in the upper adjustable position of common winding external insulation boss (12), the middle part that forms common winding regulates the pressure adjusting structure of motor starting voltage, the first head of series connection winding (8) is drawn winding overhang, be welded on device body the first terminal block (3), and be fixed on upper clamping piece (4a) through insulator, as the input of transformer, get access to grid by A.C. contactor and air switch, series connection winding (8) tail head is drawn winding overhang, is welded on device body bottom the second terminal block (7) with first of the head of common winding, be fixed on lower clamping piece (4b) through insulator upper, as the output termination motor of transformer, the tail head of common winding is drawn winding overhang, be welded on the 3rd terminal block (2) of device body, be fixed on upper clamping piece (4a) through insulator, be joined together to form neutral point by A.C. contactor (11), series connection winding and common winding adopt poured with epoxy resin sectional circular cartridge type structure, and alternate parallel vertical is fixed between upper clamping piece and lower clamping piece.
2. motor reduced voltage starting dry type autotransformer according to claim 1, is characterized in that, base (10) is arranged at described device body bottom.
3. motor reduced voltage starting dry type autotransformer according to claim 1, it is characterized in that, described series connection winding (8) has 3 windings, first winding of connecting has first A, series connection the second winding to have first B, the series connection tertiary winding to have first C, and each series connection winding has 3 corresponding tail heads, common winding (9) has 3 windings, public the first winding has first a, tail head x, public the second winding has first b, tail head y, the public tertiary winding has first c, tail head z, 3 common winding tail head x, y, z draws winding overhang and is welded on respectively on 3 points of terminal blocks of device body the 3rd terminal block (2), 3 first A of series connection winding, B, C draws on 3 points of terminal blocks that are welded on respectively device body the first terminal block (3), the tail head of each series connection winding is drawn from winding overhang, respectively with 3 first a of common winding, b, c is welded on 3 points of terminal blocks of device body bottom the second terminal block (7) together.
4. motor reduced voltage starting dry type autotransformer according to claim 1, it is characterized in that, described middle part voltage regulating tap (5) has 3 groups, be placed in respectively on the boss (12) of public the first winding, public the second winding, public tertiary winding external insulation, on each tap, there is tap brace, by the tap at two sections, common winding middle part 1., 2. with tap 3., be 4. connected, wherein 1., 2. communicate, tap is 3., 4. communicate for tap.
5. motor reduced voltage starting dry type autotransformer according to claim 1, is characterized in that, described device body is to be assembled together and to be formed by iron core, upper clamping piece, lower clamping piece, series connection winding and common winding.
6. motor reduced voltage starting dry type autotransformer according to claim 1, is characterized in that, described series connection winding and common winding are to be all made up of insulated conductor coiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420187039.4U CN203812707U (en) | 2014-04-17 | 2014-04-17 | Dry type auto-transformer for motor voltage reduction starting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420187039.4U CN203812707U (en) | 2014-04-17 | 2014-04-17 | Dry type auto-transformer for motor voltage reduction starting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203812707U true CN203812707U (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420187039.4U Expired - Fee Related CN203812707U (en) | 2014-04-17 | 2014-04-17 | Dry type auto-transformer for motor voltage reduction starting |
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| CN (1) | CN203812707U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934201A (en) * | 2015-07-03 | 2015-09-23 | 江苏容天机电科技有限公司 | Lead structure about transformer on-load voltage regulation tap switch |
| CN106653330A (en) * | 2016-12-01 | 2017-05-10 | 保定天威保变电气股份有限公司 | Voltage regulating mode connection structure for novel autotransformer |
| CN107195444A (en) * | 2017-07-31 | 2017-09-22 | 国网上海市电力公司 | Dry type auto-transformer |
-
2014
- 2014-04-17 CN CN201420187039.4U patent/CN203812707U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934201A (en) * | 2015-07-03 | 2015-09-23 | 江苏容天机电科技有限公司 | Lead structure about transformer on-load voltage regulation tap switch |
| CN106653330A (en) * | 2016-12-01 | 2017-05-10 | 保定天威保变电气股份有限公司 | Voltage regulating mode connection structure for novel autotransformer |
| CN107195444A (en) * | 2017-07-31 | 2017-09-22 | 国网上海市电力公司 | Dry type auto-transformer |
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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 |
Granted publication date: 20140903 Termination date: 20160417 |
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| CF01 | Termination of patent right due to non-payment of annual fee |