CN202939264U - Device which carries out direct current insulation test on electrical device - Google Patents
Device which carries out direct current insulation test on electrical device Download PDFInfo
- Publication number
- CN202939264U CN202939264U CN 201220494328 CN201220494328U CN202939264U CN 202939264 U CN202939264 U CN 202939264U CN 201220494328 CN201220494328 CN 201220494328 CN 201220494328 U CN201220494328 U CN 201220494328U CN 202939264 U CN202939264 U CN 202939264U
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- power supply
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- 238000012360 testing method Methods 0.000 title claims abstract description 76
- 238000009413 insulation Methods 0.000 title abstract description 8
- 238000002955 isolation Methods 0.000 claims description 17
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- Testing Relating To Insulation (AREA)
Abstract
The utility model provides a device which carries out a direct current insulation test on an electrical device and is characterized in that the device which carries out the direct current insulation test on the electrical device comprises a power supply input end, a power supply output end, a control device, a transformer, a filtering device, a current meter and a device to be tested, wherein the power supply input end is connected with a power supply and is connected with the control device, the power supply output end is in coupling connection with the transformer, the filtering device is in parallel connection with the device to be tested and then is connected with the transformer, and the current meter and the device to be tested are in series connection. The device of the utility model has the advantages that the principle and structure are simple, the use and maintenance of the device are convenient, and a guarantee is provided for the accuracy of test data.
Description
Technical field
The utility model relates to the electrical equipment field, particularly a kind of equipment that electrical equipment is carried out the D.C. isolation test.
Background technology
Generally, electrical equipment should carry out withstand voltage test, power test transformer, motor and power distribution equipment etc., and the electrical safety apparatus should regularly carry out withstand voltage test according to relevant regulations; Valve-type arrester should carry out sparking voltage test; Before putting into operation, the oil immersion power cable should carry out DC voltage withstand test; The insulation oil level of electrical equipment should carry out the compressive resistance test with normal electrode in the reference instrument cup.When testing, first voltage is transferred to 40% left and right of trial voltage, then is elevated to trial voltage with the speed of per second 3% trial voltage, and last till the stipulated time.Then in 5 seconds, lower voltage to below 25% of trial voltage, is then dropped to zero, the final cutting power supply.Be generally 1 minute or 5 minutes the pressing time of the withstand voltage test of the electrical equipments such as related tests transformer.At present, test structure is complicated, lacks effective testing equipment rational in infrastructure.
The utility model content
The purpose of this utility model is for the short form test means, mentions detection efficiency, and the spy provides a kind of equipment that electrical equipment is carried out the D.C. isolation test.
The utility model provides a kind of equipment that electrical equipment is carried out D.C. isolation test, it is characterized in that: the described equipment that electrical equipment is carried out the D.C. isolation test comprises power input 1, power output end 2, control device 3, transformer 4, filter 5, reometer 6, Devices to test 7;
Wherein: power input 1 connects power supply, and power input 1 is connected with control device 3, and power output end 2 is of coupled connections with transformer 4, and filter 5 is connected with Devices to test and is connected with transformer 4 after in parallel, and reometer 6 is connected with Devices to test 7.
Described filter 5 is electric capacity.
Described power input 1 access voltage is lower than 250 volts.
The purpose of withstand voltage test applies higher voltage to institute's measurement equipment exactly, to determine whether this equipment has enough compressive resistances.If voltage drop occur in process of the test or send breakdown signal, at this moment not judging that easily sample punctures.If insulation resistance is zero or close to zero, judge and turn out to be to puncture; Or carrying out the secondary booster test, voltage progressively applies, if puncture, when voltage is added to certain value, can be observed near continuous spark discharge or the heating of the appearance of breakdown point and smolders, and is judged to puncture.Withstand voltage test is to detect electrical equipment, electric device, electric wiring and electrical safety apparatus etc. to bear one of main method of superpotential ability, as: the transformer withstand voltage test is the test to the dielectric strength of insulating material used.When abnormal conditions appears in an electric system part, usually produce the superpotential that exceeds several times than rated voltage in electrical network, carry out the transformer withstand voltage test very necessary.Internal overvoltage raises, and in isolated neutral system, when the single-phase earthing accident occurring, all the other two-phases will be born line voltage.
Advantage of the present utility model:
The equipment that electrical equipment is carried out the D.C. isolation test described in the utility model, theory structure is simple, and operation and maintenance is convenient, and the accuracy for test figure provides assurance.
Description of drawings
Below in conjunction with drawings and the embodiments, the utility model is described in further detail:
Fig. 1 is for carrying out the equipment principle structural representation of D.C. isolation test to electrical equipment.
Embodiment
Embodiment 1
The present embodiment provides a kind of equipment that electrical equipment is carried out D.C. isolation test, it is characterized in that: the described equipment that electrical equipment is carried out the D.C. isolation test comprises power input 1, power output end 2, control device 3, transformer 4, filter 5, reometer 6, Devices to test 7;
Wherein: power input 1 connects power supply, and power input 1 is connected with control device 3, and power output end 2 is of coupled connections with transformer 4, and filter 5 is connected with Devices to test and is connected with transformer 4 after in parallel, and reometer 6 is connected with Devices to test 7.
Described filter 5 is electric capacity.
Described power input 1 access voltage is lower than 250 volts.
The purpose of withstand voltage test applies higher voltage to institute's measurement equipment exactly, to determine whether this equipment has enough compressive resistances.If voltage drop occur in process of the test or send breakdown signal, at this moment not judging that easily sample punctures.If insulation resistance is zero or close to zero, judge and turn out to be to puncture; Or carrying out the secondary booster test, voltage progressively applies, if puncture, when voltage is added to certain value, can be observed near continuous spark discharge or the heating of the appearance of breakdown point and smolders, and is judged to puncture.Withstand voltage test is to detect electrical equipment, electric device, electric wiring and electrical safety apparatus etc. to bear one of main method of superpotential ability, as: the transformer withstand voltage test is the test to the dielectric strength of insulating material used.When abnormal conditions appears in an electric system part, usually produce the superpotential that exceeds several times than rated voltage in electrical network, carry out the transformer withstand voltage test very necessary.Internal overvoltage raises, and in isolated neutral system, when the single-phase earthing accident occurring, all the other two-phases will be born line voltage.
Embodiment 2
The present embodiment provides a kind of equipment that electrical equipment is carried out D.C. isolation test, it is characterized in that: the described equipment that electrical equipment is carried out the D.C. isolation test comprises power input 1, power output end 2, control device 3, transformer 4, filter 5, reometer 6, Devices to test 7;
Wherein: power input 1 connects power supply, and power input 1 is connected with control device 3, and power output end 2 is of coupled connections with transformer 4, and filter 5 is connected with Devices to test and is connected with transformer 4 after in parallel, and reometer 6 is connected with Devices to test 7.
Described filter 5 is electric capacity.
The purpose of withstand voltage test applies higher voltage to institute's measurement equipment exactly, to determine whether this equipment has enough compressive resistances.If voltage drop occur in process of the test or send breakdown signal, at this moment not judging that easily sample punctures.If insulation resistance is zero or close to zero, judge and turn out to be to puncture; Or carrying out the secondary booster test, voltage progressively applies, if puncture, when voltage is added to certain value, can be observed near continuous spark discharge or the heating of the appearance of breakdown point and smolders, and is judged to puncture.Withstand voltage test is to detect electrical equipment, electric device, electric wiring and electrical safety apparatus etc. to bear one of main method of superpotential ability, as: the transformer withstand voltage test is the test to the dielectric strength of insulating material used.When abnormal conditions appears in an electric system part, usually produce the superpotential that exceeds several times than rated voltage in electrical network, carry out the transformer withstand voltage test very necessary.Internal overvoltage raises, and in isolated neutral system, when the single-phase earthing accident occurring, all the other two-phases will be born line voltage.
Embodiment 3
The present embodiment provides a kind of equipment that electrical equipment is carried out D.C. isolation test, it is characterized in that: the described equipment that electrical equipment is carried out the D.C. isolation test comprises power input 1, power output end 2, control device 3, transformer 4, filter 5, reometer 6, Devices to test 7;
Wherein: power input 1 connects power supply, and power input 1 is connected with control device 3, and power output end 2 is of coupled connections with transformer 4, and filter 5 is connected with Devices to test and is connected with transformer 4 after in parallel, and reometer 6 is connected with Devices to test 7.
The purpose of withstand voltage test applies higher voltage to institute's measurement equipment exactly, to determine whether this equipment has enough compressive resistances.If voltage drop occur in process of the test or send breakdown signal, at this moment not judging that easily sample punctures.If insulation resistance is zero or close to zero, judge and turn out to be to puncture; Or carrying out the secondary booster test, voltage progressively applies, if puncture, when voltage is added to certain value, can be observed near continuous spark discharge or the heating of the appearance of breakdown point and smolders, and is judged to puncture.Withstand voltage test is to detect electrical equipment, electric device, electric wiring and electrical safety apparatus etc. to bear one of main method of superpotential ability, as: the transformer withstand voltage test is the test to the dielectric strength of insulating material used.When abnormal conditions appears in an electric system part, usually produce the superpotential that exceeds several times than rated voltage in electrical network, carry out the transformer withstand voltage test very necessary.Internal overvoltage raises, and in isolated neutral system, when the single-phase earthing accident occurring, all the other two-phases will be born line voltage.
Claims (3)
1. one kind is carried out to electrical equipment the equipment that D.C. isolation is tested, it is characterized in that: the described equipment that electrical equipment is carried out D.C. isolation test comprises power input (1), power output end (2), control device (3), transformer (4), filter (5), reometer (6), Devices to test (7);
Wherein: power input (1) connects power supply, power input (1) is connected with control device (3), power output end (2) is of coupled connections with transformer (4), filter (5) is connected 7 with Devices to test) be connected with transformer (4) after in parallel, reometer (6) is connected with Devices to test (7).
2. according to the equipment that electrical equipment is carried out the D.C. isolation test claimed in claim 1, it is characterized in that: described filter (5) is electric capacity.
3. according to the equipment that electrical equipment is carried out the D.C. isolation test claimed in claim 1, it is characterized in that: described power input (1) access voltage is lower than 250 volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220494328 CN202939264U (en) | 2012-09-25 | 2012-09-25 | Device which carries out direct current insulation test on electrical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220494328 CN202939264U (en) | 2012-09-25 | 2012-09-25 | Device which carries out direct current insulation test on electrical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202939264U true CN202939264U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220494328 Expired - Fee Related CN202939264U (en) | 2012-09-25 | 2012-09-25 | Device which carries out direct current insulation test on electrical device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202939264U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914728A (en) * | 2012-09-25 | 2013-02-06 | 国家电网公司 | Direct-current insulation testing equipment for electrical equipment |
-
2012
- 2012-09-25 CN CN 201220494328 patent/CN202939264U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914728A (en) * | 2012-09-25 | 2013-02-06 | 国家电网公司 | Direct-current insulation testing equipment for electrical equipment |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20200925 |