CN204632551U - One kind of multiple voltage output test intermediate transformers - Google Patents
One kind of multiple voltage output test intermediate transformers Download PDFInfo
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- CN204632551U CN204632551U CN201520303786.4U CN201520303786U CN204632551U CN 204632551 U CN204632551 U CN 204632551U CN 201520303786 U CN201520303786 U CN 201520303786U CN 204632551 U CN204632551 U CN 204632551U
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Abstract
One kind of multiple voltage output test intermediate transformers, comprise high-tension coil and low-voltage coil, high-tension coil divides four sections of axial distribution to draw, four sections are drawn through parallel-series switch and connect, the first and last end of high-tension coil is by described parallel-series switch access Y-△ change over switch, and the first and last end of high-tension coil head end and low-voltage coil draws nine terminals.This intermediate transformer achieves the adjustment of high tension voltage, achieves 12 kinds of different no-load voltage ratio combinations, greatly reduces lead-out terminal quantity; And carry out regulation output voltage by switch, and easy to operate, more decrease wiring quantity and wiring error rate; Make whole transformer occupy space to reduce simultaneously, increase the utilance of test site, and greatly reduce live line connection number of terminals, reduce potential safety hazard.
Description
Technical field
The utility model relates to a kind of intermediate transformer for powering to test loop, belongs to intermediate transformer technical field.
Background technology
The function of test intermediate transformer is powered to test loop.Along with the variation of power transformer product kind, performance parameter, and response national energy-saving consumption reduction, cost efficiency policy.The purpose that multiple experimental use has become most transformer manufacturing producer is met with a testing transformer.The structural representation of traditional test intermediate transformer and inner coils arrangement are as shown in Figure 1, Figure 2 and Figure 3, that all Winding taps are all drawn, and then realize exporting different voltage by serioparallel exchange, Y-△ (star triangle) conversion, whole intermediate transformer is made to use so also very complicated, both unsightly, to take up room and large.
Summary of the invention
The deficiency that the utility model exists for existing test intermediate transformer, provide a kind of lead-out terminal few, easy to use, manufacture simple multiple voltage output test intermediate transformer.
Multiple voltage output test intermediate transformer of the present utility model, by the following technical solutions:
This intermediate transformer, comprise high-tension coil and low-voltage coil, high-tension coil divides four sections of axial distribution to draw, four sections are drawn through parallel-series switch and connect, the first and last end of high-tension coil is by described parallel-series switch access Y-△ change over switch, and the first and last end of high-tension coil head end and low-voltage coil draws nine terminals.
The utility model achieves the adjustment of high tension voltage, achieves 12 kinds of different no-load voltage ratio combinations, greatly reduce lead-out terminal quantity by nine terminals of high-tension coil head end and low-voltage coil first and last end; And carry out regulation output voltage by switch, and easy to operate, more decrease wiring quantity and wiring error rate; Make whole transformer occupy space to reduce simultaneously, increase the utilance of test site, and greatly reduce live line connection number of terminals, reduce potential safety hazard.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing test intermediate transformer.
Fig. 2 is the inside coils arrangement schematic diagram of existing test intermediate transformer.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the inner lead structural representation of the utility model test intermediate transformer.
Fig. 5 is the vertical view of Fig. 4.
Fig. 6 be the utility model test intermediate transformer inside coils arrangement schematic diagram.
Fig. 7 is the vertical view of Fig. 6.
Fig. 8 is the switch combination performance schematic diagram of the utility model test intermediate transformer.
In figure: 1, series parallel switch, 2, Y-D change over switch.
Embodiment
Multiple voltage output test intermediate transformer of the present utility model, as shown in Figure 4 and Figure 5, adopts a kind of new coil and pin configuration, realizes wiring in inside transformer.First high-tension coil divides four sections of axial distribution to draw, and as shown in Figure 6 and Figure 7, four sections are drawn through parallel-series switch 1 and connect, to realize the object adjusting high tension voltage.Again high-tension coil first and last end is accessed Y-△ change over switch 2 from parallel-series switch 1, realize Y-△ by adjustment gear and change.Like this, only need by high-tension coil head end and low-voltage coil first and last end totally nine terminals draw, just can realize 12 kinds of different no-load voltage ratios and combine, refer to Fig. 6, greatly reduce lead-out terminal quantity.And carry out regulation output voltage by switch, and easy to operate, more decrease wiring quantity and wiring error rate., adopt after new construction, transformer occupies space also to be had and reduces significantly, increases the utilance of test site, and greatly reduces live line connection number of terminals, reduce potential safety hazard meanwhile.
Multiple voltage output test intermediate transformer of the present utility model, can realize following functions:
1. adopt series parallel switch 1, according to electric pressure quantity and string also patten's design series parallel switch, realize high tension voltage and export 3.6kV, 7.2kV.14.4kV and 6.23kV, 12.47kV, 24.94kV multiple proportion voltage.
2. adopt Y-△ (star-triangle) change over switch 2, realize high tension voltage
the conversion of times relation, makes the electric pressure that output is different.
3. the first end terminations of low-voltage coil is drawn simultaneously, outside according to star-delta connection wiring at transformer, realizes low voltage voltage
the conversion of times relation.
4. can realize 12 kinds of different no-load voltage ratio combinations by the conversion of series parallel switch 1, star-angle change over switch 2 and low pressure star-angle, and the binding post exported only needs 9.
5., for making to lift one's head conveniently, adopt path of winding axial arranged.
6. Y-△ change over switch and parallel-series switch are placed in top of oil-tank and side respectively, optimize pin configuration, avoid because voltage difference excessive between lead-in wire threatens transformer safety to run.
Claims (1)
1. one kind of multiple voltage output test intermediate transformers, comprise high-tension coil and low-voltage coil, it is characterized in that, high-tension coil divides four sections of axial distribution to draw, four sections are drawn through parallel-series switch and connect, the first and last end of high-tension coil is by described parallel-series switch access Y-△ change over switch, and the first and last end of high-tension coil head end and low-voltage coil draws nine terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520303786.4U CN204632551U (en) | 2015-05-12 | 2015-05-12 | One kind of multiple voltage output test intermediate transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520303786.4U CN204632551U (en) | 2015-05-12 | 2015-05-12 | One kind of multiple voltage output test intermediate transformers |
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| Publication Number | Publication Date |
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| CN204632551U true CN204632551U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520303786.4U Active CN204632551U (en) | 2015-05-12 | 2015-05-12 | One kind of multiple voltage output test intermediate transformers |
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| CN (1) | CN204632551U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104835638A (en) * | 2015-05-12 | 2015-08-12 | 山东电工电气集团智能电气有限公司 | Intermediate transformer for multiple voltages output test |
-
2015
- 2015-05-12 CN CN201520303786.4U patent/CN204632551U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104835638A (en) * | 2015-05-12 | 2015-08-12 | 山东电工电气集团智能电气有限公司 | Intermediate transformer for multiple voltages output test |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |