CN2773700Y - Transformer experimental apparatus - Google Patents
Transformer experimental apparatus Download PDFInfo
- Publication number
- CN2773700Y CN2773700Y CN 200420069410 CN200420069410U CN2773700Y CN 2773700 Y CN2773700 Y CN 2773700Y CN 200420069410 CN200420069410 CN 200420069410 CN 200420069410 U CN200420069410 U CN 200420069410U CN 2773700 Y CN2773700 Y CN 2773700Y
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- transformer
- voltage
- hookup
- error
- current
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Abstract
The utility model relates to a transformer testing apparatus used for tests of mutual inductors, which comprises an electricity feeding power supply (Ty), a voltage-current increasing transformer (Tp), a current transformer error testing circuit, and a voltage-current characteristic measurement testing circuit, wherein output ends of the current transformer error testing circuit and the voltage-current characteristic measurement testing circuit are respectively connected with a current transformer to be tested; input ends of the two testing circuits are connected to a same circuit; an input end of the circuit is connected to winding coils of both secondary sides of the voltage-current increasing transformer (Tp). The utility model can not only carry out the tests of the current transformer error, but also carry out the tests of voltage-current characteristic measurement. The utility model can save unnecessary equipment investment and ensure the accuracy of measure performance.
Description
Technical field
The utility model relates to a kind of transformer test equipment, relates in particular to a kind of testing equipment that can be used for mutual inductor test usefulness.
Background technology
The test of estimated current mutual inductor is to use capacity 50kVA, and the equipment of the big electric current current lifting device of electric current 5000A when measuring volt-ampere characteristic test, need the step-up transformer of 10kVA, a 1kV, and two equipment is individualisms.Because current transformer uses power supply to be 220V, be utilize three-phase four-wire system substation transformer wherein one do power supply mutually, in case this exists live wire ground connection, will cause power supply one phase ground connection, produces powerful electric current, with regard to possible burn-out test instrument and instrument.
Summary of the invention
Technical problem to be solved in the utility model is exactly at the above-mentioned defective that exists in the prior art, provides a kind of and can carry out the current transformer error test, can carry out the transformer test equipment of voltammetric characteristic measuring again.
The technical scheme that solution the utility model technical matters is adopted is: this transformer test equipment includes and send power supply (Ty), up-flow step-up transformer (Tp), current transformer error hookup, voltammetric characteristic measuring hookup, the output terminal of described current transformer error hookup and voltammetric characteristic measuring hookup links to each other with tested current transformer respectively, the input end of two hookups is connected on the same circuit, and its input end is connected on the winding coil of secondary side of up-flow step-up transformer (Tp).The transformer of making the strong current transformer that error test uses and doing the volt-ampere characteristic test is combined on same the supply transformer realizes, current transformer error hookup and voltammetric characteristic measuring hookup are connected in the system, on this circuit, realize current transformer error test and voltammetric characteristic measuring test.
In the aforesaid circuit, the power supply of mutual inductor testing equipment and output have separately independently winding, play the effect of isolated from power, have avoided instrument and meter accident to occur.Described current transformer error hookup and voltammetric characteristic measuring hookup are connected on two different winding coils of secondary side of up-flow step-up transformer.
When doing the current transformer error test, the up-flow step-up transformer is done the error experiments winding big electric current power supply is provided, and has also played the buffer action of insulation, guarantees the safety of error test equipment.
When doing volt-ampere characteristic test, by sending power supply Ty power supply 0-250V, tertiary winding Td is connected into from coupled and connects, and measures two higher and lower gears of volt-ampere characteristic respectively, has satisfied current transformer and has aimed at the requirement of fidelity to voltage multiple different measuring voltage.Send electric side and outgoing side to play buffer action equally, when measuring volt-ampere characteristic, available tertiary winding Td centre tap connects voltage table, can reduce by one times of measuring voltage simultaneously.
The utility model has the advantages that and to carry out the current transformer error test, can carry out the voltammetric characteristic measuring test again, saved unnecessary equipment investment, and overcome the weak point of existing equipment, equipment is carried out under best service condition, can guarantee the measurement performance accuracy again simultaneously, power quality is good when doing the test of volt-ampere characteristic test or transformer error, can guarantee the sinusoidal waveform that power supply is supplied with, satisfy the national standard requirement.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the utility model is described in further detail.
The circuit theory diagrams of Fig. 1 primary current transformer error tester.
The circuit theory diagrams of the former volt-ampere characteristic test of Fig. 2.
The circuit theory diagrams of Fig. 3 the utility model testing equipment
Among the figure: the tested current transformer Sp-of TO-standard current transformer TX-measuring error measures the tested electric current mutual inductance Td-tertiary winding ZB-Burden box K-standard of volt-ampere characteristic and the common junction L1 of tested mutual inductor, a terminal label K1 of L2-standard mutual inductor, the secondary terminal label P1 of K2-standard mutual inductor, a terminal label of the tested mutual inductor of P2-measuring error P3, P4-measures a terminal label of the tested mutual inductor S1 of volt-ampere characteristic, the tested mutual inductor secondary terminal label S3 of S2-measuring error, S4-measure the tested mutual inductor secondary of volt-ampere characteristic terminal label Ty-and send power supply Tp-up-flow step-up transformer K3-test error K switch 4-test volt-ampere characteristic switch A-reometer V-voltage table R-fusing ax and two higher and lower gears of bx-tertiary winding Td.
Embodiment
Circuit diagram of the present utility model as shown in Figure 3, the mutual inductor testing equipment adopts power supply and exports the winding that has separately among the figure, plays the effect of isolated from power, avoids instrument and meter accident to occur; When doing the current transformer error test simultaneously,, also played the buffer action of insulation simultaneously, guaranteed the safety of error test equipment as big electric current power supply; The secondary circuit of voltammetric characteristic measuring hookup and up-flow step-up transformer has electric power system separately, and voltammetric characteristic measuring has high voltage shelves (ax) and two power supplies of low-voltage shelves (bx).In high voltage (ax) shelves and two power supplies of low-voltage shelves (bx), have at least a centre tap to connect the test voltage table.As shown in Figure 3, tertiary winding Td has a centre tap, when doing volt-ampere characteristic test, K3 is opened a way, the primary side of up-flow step-up transformer (Tp) with send the pressure regulator of power supply Ty to be coupled, provide 0-250V power supply by the pressure regulator that send power supply Ty, tertiary winding Td is connected into from coupled and connects, draw two gears of ax and bx respectively, so just can satisfy the high or low requirement of current transformer volt-ampere characteristic measuring voltage.Send power supply Ty and up-flow step-up transformer Tp, can be by the insulation buffer action that rises unshakable in one's determination.
When doing the current transformer error test, the up-flow step-up transformer is done the error test winding, and supply current is provided, and has also played the buffer action of insulation, guarantees the safety of error test equipment.
When doing volt-ampere characteristic test, test error K switch 3 is opened.By Ty power supply 0-250V, tertiary winding Td is connected into from coupled and connects, measure higher and low two gears of volt-ampere characteristic respectively, satisfy current transformer and aimed at the measurement of fidelity system multiple higher voltage, send electric side and supply side to play buffer action equally, when measuring the high voltage volt-ampere characteristic, available auto-transformer centre tap connects voltage table, can reduce by one times of measuring voltage simultaneously.
Concrete operations are:
1, K3 closes, and K4 opens, and does the transformer error test.Send power supply Ty line powering, measure to the measuring error test.Tested current transformer Tx does error test through sending power supply Ty supplying electric current.The data of measuring compare with the data that standard mutual inductor To under similarity condition measures, thereby detect the error characteristics of tested current transformer Tx.
2, K4 closes, and K3 opens, and does the volt-ampere characteristic test.The terminals P 3 of tested current transformer Sp, P4 open circuit, secondary terminal S3, S4 service voltage carry out the voltammetric characteristic measuring of tested current transformer Sp.
Claims (4)
1. transformer test equipment, it is characterized in that this equipment includes send power supply (Ty), up-flow step-up transformer (Tp), current transformer error hookup, voltammetric characteristic measuring hookup, the output terminal of described current transformer error hookup and voltammetric characteristic measuring hookup links to each other with tested current transformer respectively, the input end of two hookups is connected on the same circuit, and its input end is connected on the winding coil of secondary side of up-flow step-up transformer (Tp).
2. transformer test equipment according to claim 1 is characterized in that described current transformer error hookup and voltammetric characteristic measuring hookup are connected on two different winding coils of secondary side of up-flow step-up transformer.
3, transformer test equipment according to claim 2, the secondary circuit that it is characterized in that voltammetric characteristic measuring hookup and up-flow step-up transformer, electric power system is separately arranged, and voltammetric characteristic measuring has high voltage shelves (ax) and two power supplies of low-voltage shelves (bx).
4. transformer test equipment according to claim 3 is characterized in that having at least a centre tap to connect the test voltage table in described high voltage (ax) shelves and two power supplies of low-voltage shelves (bx).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420069410 CN2773700Y (en) | 2004-12-08 | 2004-12-08 | Transformer experimental apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420069410 CN2773700Y (en) | 2004-12-08 | 2004-12-08 | Transformer experimental apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2773700Y true CN2773700Y (en) | 2006-04-19 |
Family
ID=36708963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420069410 Expired - Fee Related CN2773700Y (en) | 2004-12-08 | 2004-12-08 | Transformer experimental apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2773700Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102096033A (en) * | 2010-11-27 | 2011-06-15 | 国网电力科学研究院 | Test device for sudden short circuit of voltage transformer |
| CN103983818A (en) * | 2014-04-04 | 2014-08-13 | 国网山东桓台县供电公司 | Integrated riser boosted apparatus |
-
2004
- 2004-12-08 CN CN 200420069410 patent/CN2773700Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102096033A (en) * | 2010-11-27 | 2011-06-15 | 国网电力科学研究院 | Test device for sudden short circuit of voltage transformer |
| CN103983818A (en) * | 2014-04-04 | 2014-08-13 | 国网山东桓台县供电公司 | Integrated riser boosted apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |