CN202502205U - Variable frequency series resonance withstand voltage test apparatus - Google Patents
Variable frequency series resonance withstand voltage test apparatus Download PDFInfo
- Publication number
- CN202502205U CN202502205U CN201220116320XU CN201220116320U CN202502205U CN 202502205 U CN202502205 U CN 202502205U CN 201220116320X U CN201220116320X U CN 201220116320XU CN 201220116320 U CN201220116320 U CN 201220116320U CN 202502205 U CN202502205 U CN 202502205U
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- series
- resonance
- modulation control
- frequency
- voltage divider
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Abstract
The utility model relates to a variable frequency series resonance withstand voltage test apparatus, comprising a frequency modulation control cabinet, an excitation transformer, a resonance reactor and a voltage divider. The frequency modulation control cabinet is connected with the excitation transformer is connected in series with the resonance reactor and then the voltage divider is connected in parallel; and a port that is connected in parallel with a tested object is arranged at the voltage divider. Compared with the prior art, the technology employed in the utility model enables the provided apparatus to have advantages of simple structure and high control precision and the like.
Description
Technical field
The utility model relates to a kind of test unit, especially relates to a kind of variable-frequency series-resonance Withstand test device.
Background technology
In high-voltage fence, various electronic components all important affair carry out voltage-withstand test earlier, see whether can sustain the high voltage in the electrical network, and general raising supply frequency, the reduction exciting current of adopting reaches the purpose that applies voltage.
Saturated for preventing to be tried electronic component; Usually adopt the way that improves test frequency; Disclose a kind of Withstand test device like application for a patent for invention 201110122174.1, comprised variable-frequency power sources, intermediate transformer, wherein be parallel with reactor at the two ends of the high pressure winding of described intermediate transformer.Though this device can be regulated test frequency within the specific limits, control accuracy is not high, is difficult to the regulating effect that reaches desirable.
Summary of the invention
The purpose of the utility model is exactly that a kind of simple in structure, variable-frequency series-resonance Withstand test device that control accuracy is high is provided in order to overcome the defective that above-mentioned prior art exists.
The purpose of the utility model can realize through following technical scheme:
A kind of variable-frequency series-resonance Withstand test device; It is characterized in that; This device comprises frequency modulation control cabinet, exciting transformer, resonance reactor and voltage divider; Described frequency modulation control cabinet connects exciting transformer, parallelly connected voltage divider behind the described exciting transformer series resonance reactor, and described voltage divider is provided with the port parallelly connected with test specimen.
Described voltage divider is by capacitor C
1With capacitor C
2Be composed in series capacitor C
2Two ends are provided with voltage table.
The electric capacity of described exciting transformer is 800kVA.
Described frequency modulation control cabinet external AC, the frequency modulation control scope of frequency modulation control cabinet is 30-300Hz.
Described resonance reactor is composed in series by 1-3 joint resonance reactor single-unit, and the maximum voltage of described resonance reactor single-unit is 270kV, and max cap. is 540kVA.
Compared with prior art, the utility model is simple in structure, and control accuracy is high, can be used for the occasion of accurately measuring.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
As shown in Figure 1; A kind of variable-frequency series-resonance Withstand test device comprises frequency modulation control cabinet 1, exciting transformer T, resonance reactor L and voltage divider; Frequency modulation control cabinet 1 connects exciting transformer T, parallelly connected voltage divider behind the exciting transformer T series resonance reactor L, and voltage divider is by capacitor C
1With capacitor C
2Be composed in series capacitor C
2Two ends are provided with voltage table m.
Wherein, Voltage divider is provided with the port parallelly connected with test specimen 2, and the electric capacity of exciting transformer T is 800kVA, the alternating current AC of frequency modulation control cabinet 1 external 380V; The frequency modulation control scope of frequency modulation control cabinet 1 is 30-300Hz; Resonance reactor L is composed in series by 1-3 joint resonance reactor single-unit, and the maximum voltage of resonance reactor L single-unit is 270kV, and max cap. is 540kVA.
The utility model can be used as the equipment that boosts of testing, and improves test frequency through frequency modulation control device 1 and improves the voltage at voltage divider two ends, thereby record the withstand voltage of test specimen 2.
Claims (5)
1. variable-frequency series-resonance Withstand test device; It is characterized in that; This device comprises frequency modulation control cabinet, exciting transformer, resonance reactor and voltage divider; Described frequency modulation control cabinet connects exciting transformer, parallelly connected voltage divider behind the described exciting transformer series resonance reactor, and described voltage divider is provided with the port parallelly connected with test specimen.
2. a kind of variable-frequency series-resonance Withstand test device according to claim 1 is characterized in that described voltage divider is by capacitor C
1With capacitor C
2Be composed in series capacitor C
2Two ends are provided with voltage table.
3. a kind of variable-frequency series-resonance Withstand test device according to claim 1 is characterized in that the electric capacity of described exciting transformer is 800kVA.
4. a kind of variable-frequency series-resonance Withstand test device according to claim 1 is characterized in that, described frequency modulation control cabinet external AC, and the frequency modulation control scope of frequency modulation control cabinet is 30-300Hz.
5. a kind of variable-frequency series-resonance Withstand test device according to claim 1; It is characterized in that; Described resonance reactor is composed in series by 1-3 joint resonance reactor single-unit, and the maximum voltage of described resonance reactor single-unit is 270kV, and max cap. is 540kVA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220116320XU CN202502205U (en) | 2012-03-23 | 2012-03-23 | Variable frequency series resonance withstand voltage test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220116320XU CN202502205U (en) | 2012-03-23 | 2012-03-23 | Variable frequency series resonance withstand voltage test apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202502205U true CN202502205U (en) | 2012-10-24 |
Family
ID=47038815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220116320XU Expired - Lifetime CN202502205U (en) | 2012-03-23 | 2012-03-23 | Variable frequency series resonance withstand voltage test apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202502205U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675624A (en) * | 2013-12-13 | 2014-03-26 | 中国西电电气股份有限公司 | Power-frequency voltage testing device and testing method of lightning arrester |
| CN104459501A (en) * | 2014-12-25 | 2015-03-25 | 中国西电电气股份有限公司 | Lightning arrester power frequency testing device and method |
| CN106353660A (en) * | 2016-08-31 | 2017-01-25 | 淮北工科检测检验有限公司 | Series resonance device |
| CN110568332A (en) * | 2019-09-23 | 2019-12-13 | 南方电网科学研究院有限责任公司 | lightning arrester resistor sheet side glaze discharge test system |
-
2012
- 2012-03-23 CN CN201220116320XU patent/CN202502205U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675624A (en) * | 2013-12-13 | 2014-03-26 | 中国西电电气股份有限公司 | Power-frequency voltage testing device and testing method of lightning arrester |
| CN103675624B (en) * | 2013-12-13 | 2016-07-06 | 中国西电电气股份有限公司 | A kind of spark gap working-frequency voltage test device and test method |
| CN104459501A (en) * | 2014-12-25 | 2015-03-25 | 中国西电电气股份有限公司 | Lightning arrester power frequency testing device and method |
| CN106353660A (en) * | 2016-08-31 | 2017-01-25 | 淮北工科检测检验有限公司 | Series resonance device |
| CN110568332A (en) * | 2019-09-23 | 2019-12-13 | 南方电网科学研究院有限责任公司 | lightning arrester resistor sheet side glaze discharge test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121024 |
|
| CX01 | Expiry of patent term |