CN203595741U - High-isolation-voltage test device - Google Patents
High-isolation-voltage test device Download PDFInfo
- Publication number
- CN203595741U CN203595741U CN201320723636.XU CN201320723636U CN203595741U CN 203595741 U CN203595741 U CN 203595741U CN 201320723636 U CN201320723636 U CN 201320723636U CN 203595741 U CN203595741 U CN 203595741U
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- power supply
- test
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- isolation
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Abstract
The utility model relates to a test device, and specifically relates to a high-isolation-voltage test device. The circuit of the test device comprises a storage battery, a power supply ground, an input ground, an output ground, an isolation amplifier to be tested, a test selection switch, a high-voltage ammeter and a high voltage power supply. The device provided by the utility model can effectively prevent test data errors caused by a current Irx flowing through an insulating resistor, and prevent a distributed capacitor from being broken down, thereby saving the cost and improving the working efficiency.
Description
Technical field
The utility model relates to a kind of proving installation, especially high-isolating proving installation.
Background technology
It between the power supply of isolated amplifier ground OG, ground, importation IG, output ground PG three, is at present isolation mutually on electric, between test mutually, want external 15V working power make isolated amplifier in running order when isolation voltage, as shown in Figure 1, when switch seated position 1, test the isolation voltage between PG and IG, the isolation voltage between PG and OG is tested in position 2, the isolation voltage between position 3 test I G and OG.But because the negative pole of 2kV high-voltage power supply output connects shell, and shell connects the earth, and the shell of 15V stabilized voltage supply is also to connect the earth simultaneously, and shell and internal wiring part exist certain insulation resistance RX and distributed capacitance CX.In the time testing the isolation voltage between PG and IG and test the isolation voltage between PG and OG, RX and CX have been equivalent to be parallel to the output terminal of high-voltage power supply, and as shown in Figure 2, this just flows through generation the electric current I rx of RX, cause test data mistake, and CX may be punctured.
Utility model content
Easily survey in order to overcome proving installation by mistake, and may puncture the deficiency of electric capacity, the utility model provides high-isolating proving installation.
The utility model solves the technical scheme that its technical matters adopts: high-isolating proving installation, tested isolated amplifier is connected with accumulator, PG one end, power supply ground is connected with the negative pole of accumulator, the other end is connected with test selection switch, IG one end, input ground is connected with tested isolated amplifier, the other end is connected with test selection switch, OG one end, output ground is connected with tested isolated amplifier, the other end is connected with test selection switch, Hi-pot test reometer one end is connected with the positive pole of high-voltage power supply, the other end is connected with test selection switch, the minus earth of high-voltage power supply.
According to another embodiment of the present utility model, further comprise: accumulator is 15V, high-voltage power supply is 2kV.
The beneficial effects of the utility model are: this device can be avoided producing test data mistake because electric current I rx flows through insulation resistance, and has avoided distributed capacitance breakdown, has saved cost, has improved work efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the schematic diagram of the utility model background technology;
Fig. 2 is the schematic diagram of the utility model background technology;
Fig. 3 is schematic diagram of the present utility model.
Embodiment
If Fig. 1 is the schematic diagram of the utility model background technology, Fig. 2 is the schematic diagram of the utility model background technology, Fig. 3 is schematic diagram of the present utility model, high-isolating proving installation, tested isolated amplifier is connected with accumulator, PG one end, power supply ground is connected with the negative pole of accumulator, the other end is connected with test selection switch, IG one end, input ground is connected with tested isolated amplifier, the other end is connected with test selection switch, OG one end, output ground is connected with tested isolated amplifier, the other end is connected with test selection switch, Hi-pot test reometer one end is connected with the positive pole of high-voltage power supply, the other end is connected with test selection switch, the minus earth of high-voltage power supply, accumulator is 15V, high-voltage power supply is 2kV.
When work, be isolation mutually between the power supply of isolated amplifier ground OG, ground, importation IG, output ground PG three on electric, between test mutually, external 15V accumulator makes isolated amplifier in running order when isolation voltage.When switch seated position 1, test the isolation voltage between PG and IG, the isolation voltage between PG and OG is tested in position 2, isolation voltage between position 3 test I G and OG, because accumulator and the earth are without electrical link, so this device can be avoided producing test data mistake because electric current I rx flows through insulation resistance, and avoid distributed capacitance breakdown, saved cost, improved work efficiency.
Claims (2)
1. high-isolating proving installation, it is characterized in that: tested isolated amplifier is connected with accumulator, PG one end, power supply ground is connected with the negative pole of accumulator, the other end is connected with test selection switch, IG one end, input ground is connected with tested isolated amplifier, the other end is connected with test selection switch, OG one end, output ground is connected with tested isolated amplifier, the other end is connected with test selection switch, Hi-pot test reometer one end is connected with the positive pole of high-voltage power supply, the other end is connected with test selection switch, the minus earth of high-voltage power supply.
2. high-isolating proving installation according to claim 1, is characterized in that: accumulator is 15V, and high-voltage power supply is 2kV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723636.XU CN203595741U (en) | 2013-11-15 | 2013-11-15 | High-isolation-voltage test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723636.XU CN203595741U (en) | 2013-11-15 | 2013-11-15 | High-isolation-voltage test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203595741U true CN203595741U (en) | 2014-05-14 |
Family
ID=50676610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320723636.XU Expired - Fee Related CN203595741U (en) | 2013-11-15 | 2013-11-15 | High-isolation-voltage test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203595741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466654A (en) * | 2021-06-01 | 2021-10-01 | 中国电子科技集团公司第四十三研究所 | Method for detecting isolation voltage of linear optical isolation amplifier |
-
2013
- 2013-11-15 CN CN201320723636.XU patent/CN203595741U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466654A (en) * | 2021-06-01 | 2021-10-01 | 中国电子科技集团公司第四十三研究所 | Method for detecting isolation voltage of linear optical isolation amplifier |
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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: 20140514 Termination date: 20181115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |