CN202649384U - Alternating current withstand voltage test apparatus - Google Patents
Alternating current withstand voltage test apparatus Download PDFInfo
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- CN202649384U CN202649384U CN 201220172172 CN201220172172U CN202649384U CN 202649384 U CN202649384 U CN 202649384U CN 201220172172 CN201220172172 CN 201220172172 CN 201220172172 U CN201220172172 U CN 201220172172U CN 202649384 U CN202649384 U CN 202649384U
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- 238000012360 testing method Methods 0.000 title claims abstract description 153
- 238000009413 insulation Methods 0.000 abstract description 19
- 230000001186 cumulative effect Effects 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract 3
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000009421 internal insulation Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 9
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses an alternating current withstand voltage test apparatus. The alternating current withstand voltage test apparatus comprises a voltage regulating and voltage transformation device and an output switch. The output switch is connected to the input end of the voltage regulating and voltage transformation device. The voltage regulating and voltage transformation device is provided with three-phase output terminals for outputting sequential alternating current voltages having a phase angle difference of 120 degrees, wherein the three-phase output terminals are connected with corresponding input wire connection terminals of a tested circuit breaker respectively. In the prior art, the single-phase voltage application operation is performed multiple times in power frequency alternating current withstand voltage tests, so the insulation strength of the circuit breaker is gradually reduced, and the cumulative effect which will cause internal insulation deterioration is generated, so unnecessary damage is caused on the circuit breaker. According to the utility model, the problem is avoided.
Description
Technical field
The utility model relates to the power test field, particularly AC voltage withstand test equipment.
Background technology
The industrial frequency AC withstand voltage test is the most direct method of examination insulation of electrical installation intensity, significant to guaranteeing the electrical equipment safe operation, also be maintenance equipment dielectric level, avoid occuring the important means of insulation fault, and AC voltage withstand test can fully reflect the actual conditions that electrical equipment moves under alternating current.But, AC voltage withstand test belongs to destructive test for the SOLID ORGANIC insulation, the trial voltage that test is adopted is often much higher than working voltage, too high voltage can make the insulating medium loss increase, generate heat, discharge, and repeatedly applying voltage can make its unborn insulation defect further develop, dielectric strength is reduced gradually, form the inner deteriorated cumulative effect of insulation.
In the prior art isolating switch organic insulation is partly carried out the industrial frequency AC withstand voltage test, since the test at the single-phase voltage that applies respectively of the organic insulation part of isolating switch, because the organic insulation to isolating switch partly repeats to apply voltage, reduced the dielectric strength of tested isolating switch organic insulation part.
The utility model content
The real technical matters to be solved of the utility model provides a kind of AC voltage withstand test equipment, avoid because of use the industrial frequency AC withstand voltage test repeatedly single-phase pressurization the isolating switch dielectric strength is reduced gradually.
Technical solution of the present utility model is:
A kind of AC voltage withstand test equipment wherein, comprising: modulation pressure device and an output switch;
Described output switch connects the input end of described modulation pressure device;
Described modulation pressure device is provided with the three-phase output end of the order alternating voltage of 120 ° of output phase angle differences, and tests input terminal sub-connection corresponding to isolating switch with one respectively.
Above-mentioned AC voltage withstand test equipment, wherein, described modulation pressure device comprises: three single-phase voltage regulators and three single-phase high-voltage testing transformers, the output terminal of three described single-phase voltage regulators connects with the input end of corresponding described single-phase high-voltage testing transformer respectively, and the output terminal of three the described single-phase high-voltage testing transformers respectively connection terminal corresponding with described test isolating switch connects.
Above-mentioned AC voltage withstand test equipment, wherein, described modulation pressure device comprises: a three-phase regulator and three single-phase high-voltage testing transformers, the output terminal of described three-phase regulator connects with the corresponding input end of three described single-phase high-voltage testing transformers respectively, and the output terminal of three the described single-phase high-voltage testing transformers respectively connection terminal corresponding with described test isolating switch connects.
Above-mentioned AC voltage withstand test equipment, wherein, described single-phase high-voltage testing transformer is PT.
Above-mentioned AC voltage withstand test equipment, wherein, described modulation pressure device comprises: a three-phase regulator and a three-phase high-voltage testing transformer, the corresponding connection of input end of the output terminal of described three-phase regulator and described three-phase high-voltage testing transformer, the corresponding connection of three-phase terminal of the output terminal of described three-phase high-voltage testing transformer and described test isolating switch.
Learnt that by above explanation the present invention has following advantage really:
AC voltage withstand test equipment of the present utility model makes and has sequentially loaded the trial voltage of phase angle difference for 120 ° of orders on each winding line terminals of testing isolating switch simultaneously; The voltage that connects of three winding line terminals namely, the variation pattern of its phase angle change for sequentially increasing progressively or sequentially successively decrease.Whereby, adopt above-mentioned three-phase to apply simultaneously ac test voltage, and the trial voltage phase angle difference is respectively sequentially sequentially 120 °, not only effectively reached the purpose of finding insulation defect, the organic insulation that has also reduced simultaneously isolating switch partly repeats applied voltage test, avoid because of use the industrial frequency AC withstand voltage test repeatedly single-phase pressurization the isolating switch dielectric strength is reduced gradually, form insulation inner deteriorated cumulative effect and isolating switch is caused unnecessary injury.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of the application's a part, does not consist of restriction of the present utility model.In the accompanying drawings:
Figure 1 shows that a kind of AC voltage withstand test equipment connecting relation synoptic diagram among the utility model embodiment.
The main element label declaration:
1: modulation pressure device 2: test isolating switch 3: pressure regulator
4: HT testing transformer 21,22,23: suitable for reading 21 ', 22 ', 23 ': end opening
Embodiment
A kind of AC voltage withstand test equipment of the present utility model, better, modulation pressure device and an output switch; Described output switch connects the input end of described modulation pressure device; Described modulation pressure device is provided with the three-phase output end of the order alternating voltage of 120 ° of output phase angle differences, and tests input terminal sub-connection corresponding to isolating switch with one respectively.Adopting three-phase to apply simultaneously alternating voltage to AC voltage withstand test equipment, the organic insulation that has not only reduced isolating switch partly repeats applied voltage test, avoids simultaneously isolating switch is caused unnecessary injury.
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model embodiment is described in further detail.At this, the utility model be used for is explained in illustrative examples of the present utility model and explanation thereof, but not as to restriction of the present utility model.
Be illustrated in figure 1 as a kind of AC voltage withstand test equipment connecting relation synoptic diagram among the utility model embodiment.
A kind of AC voltage withstand test equipment comprises: modulation pressure device 1 and an output switch (not shown);
Wherein, output switch connects the input end of modulation pressure device 1;
Modulation pressure device 1 is provided with the three-phase output end of the order alternating voltage of 120 ° of phase angle differences of output, and each three-phase input terminal sub-connection corresponding with a test isolating switch 2 respectively mutually; During closed output switch, can provide required trial voltage for test isolating switch 2 by modulation pressure device 1, simultaneously can also be according to the design parameter of concrete test demand and test isolating switch, regulate by modulation pressure device 1, make it to obtain a Pass Test requirement and be loaded on the trial voltage of testing on the isolating switch 2.With this, the utility model is loaded into the three-phase input terminal of test isolating switch 2 correspondences simultaneously by the three-phase test voltage that will obtain, and making the phase difference of voltage between two connection jaws testing isolating switch 2 every winding line terminals all is 120 ° of orders, and the three winding line terminals that are provided with that make the test isolating switch sequentially have phase difference of voltage forward, thereby test isolating switch 2 is carried out AC voltage withstand test.
Concrete, as shown in the figure, in a better embodiment of the present utility model, this test isolating switch 2 is provided with three groups of adjacent connection terminals, wherein suitable for reading, the end opening of adjacent described connection terminal respectively with described modulation pressure device 1 in HT testing transformer 4 have phase angle difference and be the corresponding connection of two lead-out terminals of 120 ° of orders.As shown in Figure 1, described test isolating switch 2 is provided with three groups of adjacent input wires terminals, they respectively correspondence be provided with suitable for reading 21,22,23 and end opening 21 ', 22 ', 23 ', wherein suitable for reading 21 and end opening 21 ' be connected connection with C with the A phase of the HT testing transformer 4 of described modulation pressure device 1 respectively, suitable for reading 22 are connected with A with the B phase of described modulation pressure device 1 mesohigh testing transformer 4 respectively with end opening 22 ' and are connected, suitable for reading 23 and end opening 23 ' then respectively with the C phase of described modulation pressure device 1 mesohigh testing transformer 4, B is connected, and has sequentially loaded the trial voltage of phase angle difference for 120 ° of orders on each winding line terminals of testing isolating switch 2 simultaneously thereby make; The voltage that connects of three winding line terminals namely, the variation pattern of its phase angle change for sequentially increasing progressively or sequentially successively decrease.Simultaneously, the three-phase output end of the pressure regulator 3 in the modulation pressure device 1 and the corresponding connection of the three-phase input end of HT testing transformer 4 according to the test demand of different test isolating switchs 2, are regulated the voltage that is delivered to HT testing transformer 4.Whereby, adopt above-mentioned three-phase to apply simultaneously ac test voltage, and the trial voltage phase angle difference is respectively sequentially sequentially 120 °, not only effectively reached the purpose of finding insulation defect, the organic insulation that has also reduced simultaneously isolating switch partly repeats applied voltage test, avoid reducing gradually because withstand voltage test makes the isolating switch dielectric strength, form insulation inner deteriorated cumulative effect and isolating switch is caused unnecessary injury.
The better embodiment of a kind of AC voltage withstand test equipment of the present utility model, further, its modulation pressure device 1 comprises: three single-phase high-voltage testing transformers and three single-phase voltage regulators, the output terminal of three described single-phase voltage regulators connects with the input end of corresponding described single-phase high-voltage testing transformer respectively, and the output terminal of three the described single-phase high-voltage testing transformers respectively connection terminal corresponding with described test isolating switch 2 connects.During the output switch of closed this AC voltage withstand test equipment, three single-phase high-voltage testing transformers by modulation pressure device 1 can provide required trial voltage for three winding line terminals correspondences of test isolating switch 2, simultaneously can also be according to the design parameter of concrete test demand and test isolating switch 2, three single-phase voltage regulators by modulation pressure device 1 make it to obtain the trial voltage of Pass Test requirement respectively to the adjusting setting of each phase voltage parameter.So that the three-phase test voltage that will be respectively obtains from three single-phase high-voltage testing transformers and single-phase voltage regulator is loaded on three-phase terminal of test isolating switch 2 correspondences simultaneously, test isolating switch 2 is carried out AC voltage withstand test.Adopt above-mentioned three single-phase high-voltage testing transformers and three single-phase voltage regulators, in the time of can guaranteeing to work when a certain the breaking down mutually in HT testing transformer or the pressure regulator three-phase, when perhaps needing to change the corresponding intrument of different model, be more convenient for dismantling, installing, also be conducive to save the cost of failure replacement, make withstand voltage test more flexibly and have more efficient.
A kind of AC voltage withstand test equipment that the utility model provides, in its another better embodiment, its modulation pressure device 1 comprises: three single-phase high-voltage testing transformers and a three-phase regulator, the output terminal of described three-phase regulator respectively with the corresponding connection of input end of described single-phase high-voltage testing transformer, the output terminal of three described single-phase high-voltage testing transformers respectively with the corresponding connection of three-phase terminal of described test isolating switch.During the output switch of closed this AC voltage withstand test equipment, three single-phase high-voltage testing transformers by modulation pressure device 1 can provide required trial voltage for three winding line terminals correspondences of test isolating switch 2, simultaneously can also be according to the design parameter of concrete test demand and test isolating switch 2, three-phase regulator by modulation pressure device 1 carries out the adjusting setting to each phase voltage parameter, makes it to obtain the trial voltage of Pass Test requirement.So that the three-phase test voltage that will be respectively obtains from three single-phase high-voltage testing transformers and described three-phase regulator is loaded on three-phase terminal of test isolating switch 2 correspondences simultaneously, test isolating switch 2 is carried out AC voltage withstand test.And wherein, better, according to different withstand voltage test demands, in the AC voltage withstand test equipment of the present utility model, described single-phase high-voltage testing transformer can be PT.
AC voltage withstand test equipment of the present utility model, in its another better embodiment, its modulation pressure device 1 comprises: a three-phase high-voltage testing transformer and a three-phase regulator, the corresponding connection of input end of the output terminal of described three-phase regulator and described three-phase high-voltage testing transformer, the corresponding connection of three-phase terminal of the three-phase output end of described three-phase high-voltage testing transformer and described test isolating switch.During the output switch of closed this AC voltage withstand test equipment, three-phase high-voltage testing transformer by modulation pressure device 1 can provide required trial voltage for three winding line terminals correspondences of test isolating switch 2, simultaneously can also be according to the design parameter of concrete test demand and test isolating switch 2, three-phase regulator by modulation pressure device 1 carries out the adjusting setting to each phase voltage parameter, makes it to obtain the trial voltage of Pass Test requirement.So that will be loaded into simultaneously from the three-phase test voltage that three-phase high-voltage testing transformer and three-phase regulator obtain on three-phase terminal of test isolating switch 2 correspondences, test isolating switch 2 is carried out AC voltage withstand test.Adopt three-phase high-voltage testing transformer and three-phase regulator directly to regulate simultaneously ployphase voltages, simplified the configuration of modulation pressure device 1, optimized process of the test.
To sum up, adopting three-phase to apply simultaneously alternating voltage to AC voltage withstand test equipment, the organic insulation that has not only reduced isolating switch partly repeats applied voltage test, avoid simultaneously reducing gradually because withstand voltage test makes the isolating switch dielectric strength, form insulation inner deteriorated cumulative effect and isolating switch is caused unnecessary injury.
Above-described embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is embodiment of the present utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. an AC voltage withstand test equipment is characterized in that comprising: modulation pressure device and an output switch;
Described output switch connects the input end of described modulation pressure device;
Described modulation pressure device is provided with the three-phase output end of the order alternating voltage of 120 ° of output phase angle differences, and tests input terminal sub-connection corresponding to isolating switch with one respectively.
2. AC voltage withstand test equipment according to claim 1, it is characterized in that, described modulation pressure device comprises: three single-phase voltage regulators and three single-phase high-voltage testing transformers, the output terminal of three described single-phase voltage regulators connects with the input end of corresponding described single-phase high-voltage testing transformer respectively, and the output terminal of three the described single-phase high-voltage testing transformers respectively connection terminal corresponding with described test isolating switch connects.
3. AC voltage withstand test equipment according to claim 1, it is characterized in that, described modulation pressure device comprises: a three-phase regulator and three single-phase high-voltage testing transformers, the output terminal of described three-phase regulator connects with the corresponding input end of three described single-phase high-voltage testing transformers respectively, and the output terminal of three the described single-phase high-voltage testing transformers respectively connection terminal corresponding with described test isolating switch connects.
4. according to claim 2 or 3 described AC voltage withstand test equipment, it is characterized in that described single-phase high-voltage testing transformer is PT.
5. AC voltage withstand test equipment according to claim 1, it is characterized in that, described modulation pressure device comprises: a three-phase regulator and a three-phase high-voltage testing transformer, the corresponding connection of input end of the output terminal of described three-phase regulator and described three-phase high-voltage testing transformer, the corresponding connection of three-phase terminal of the output terminal of described three-phase high-voltage testing transformer and described test isolating switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220172172 CN202649384U (en) | 2012-04-23 | 2012-04-23 | Alternating current withstand voltage test apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220172172 CN202649384U (en) | 2012-04-23 | 2012-04-23 | Alternating current withstand voltage test apparatus |
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| CN202649384U true CN202649384U (en) | 2013-01-02 |
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| CN 201220172172 Expired - Fee Related CN202649384U (en) | 2012-04-23 | 2012-04-23 | Alternating current withstand voltage test apparatus |
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| CN (1) | CN202649384U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235246A (en) * | 2013-05-08 | 2013-08-07 | 上海电缆研究所 | Voltaic arc resistance experimental device of aviation wire and experimental method of device |
-
2012
- 2012-04-23 CN CN 201220172172 patent/CN202649384U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235246A (en) * | 2013-05-08 | 2013-08-07 | 上海电缆研究所 | Voltaic arc resistance experimental device of aviation wire and experimental method of device |
| CN103235246B (en) * | 2013-05-08 | 2016-04-20 | 上海电缆研究所 | The aviation wire experimental provision of resistance to electric arc and experimental technique thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121220 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121220 Address after: 037008 No. 61 Yingbin West Road, Shanxi, Datong Patentee after: Datong Power Supply Branch, Shanxi Electric Power Co., Ltd. Patentee after: State Grid Corporation of China Address before: 037008 No. 61 Yingbin West Road, Shanxi, Datong Patentee before: Datong Power Supply Branch, Shanxi Electric Power Co., Ltd. |
|
| 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: 20130102 Termination date: 20190423 |