CN105137307A - Automatic tester for dielectric strength of insulating oil - Google Patents
Automatic tester for dielectric strength of insulating oil Download PDFInfo
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- CN105137307A CN105137307A CN201510598122.XA CN201510598122A CN105137307A CN 105137307 A CN105137307 A CN 105137307A CN 201510598122 A CN201510598122 A CN 201510598122A CN 105137307 A CN105137307 A CN 105137307A
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- electrically connected
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- operational amplifier
- axostylus axostyle
- auto testing
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Abstract
Provided is an automatic tester for the dielectric strength of insulating oil. The automatic tester comprises a high-voltage cabin, the high-voltage cabin comprises a high-voltage cabin body, at least two high-voltage columns are arranged in the high-voltage cabin body, an oil cup is arranged between each two high-voltage columns, two shaft rods are connected on a cup wall of the oil cup, the shaft rods penetrate through the cup wall of the oil cup, one ends of the shaft rods are arranged in the oil cup, the other ends of the shaft rods are arranged at the external part of the oil cup, the oil cup is supported between the two high-voltage columns via the shaft rods positioned at the external part of the oil cup, one end of each shaft rod, positioned in the oil cup, is connected with an electrode, and a gap is arranged between two electrodes. By adopting the above scheme, the function of automatic detection is provided, the tester automatically enters a reset state and performs zero returning of a voltage regulator, the function of automatic printing and output is provided, test parameters can be changed according to the requirement of users, the operation is flexible, non-uniformity of oil samples can be eliminated, and the test accuracy of bubbles can be improved.
Description
Technical field
The present invention relates to a kind of testing tool, tool particularly relates to a kind of dielectric oil dielectrical strength auto testing instrument.
Technical background
Insulating oil is widely used in the high voltage electric equipments such as transformer, oil-break, oil-filled cable, power capacitor and tubing and casing.Be in operation, insulating oil is owing to being subject to the effect of oxygen, high-temperature, high humility, sunlight, highfield and impurity, and performance can degenerate gradually, causes it not give full play to insulating effect, related tests must be carried out to insulating oil termly, to identify whether its performance degenerates for this reason.
Traditional dielectric oil dielectrical strength needs artificial operation stirring apparatus to stir insulating oil when testing, add the artificial labile factor stirring existence, also however time clearing electrode, ensure the stable of test reading, work efficiency is reduced greatly, existing analyzer anti-high pressure ability is poor simultaneously, is subject to the interference of high-voltage breakdown, have impact on the accuracy of data test.
Number of patent application be 201010215346.5 utility model patent disclose a kind of dielectric oil dielectrical strength tester, include computer control device, printing equipment, display device, self-poking arrangement, regulator, described self-poking arrangement, printing equipment, display device, regulator control by computer control device jointly.
Adopt the tester of such scheme, test overall process is by controlled by single chip microprocessor, interference free performance improves, overcome the disadvantage that existing analyzer is subject to high-voltage breakdown interference to a certain extent, improve work efficiency, reduce the energy punctured needed for fluid, do not need clearing electrode in test process simultaneously, microcomputer automatic control stirs, and test reading is accurately stable.But the tester of said structure does not have automatic detection function, can not automatically reset after start, test result also needs artificial printing, can not realize automatic printing and export.In addition, the parameter of the tester of said structure can not be arranged freely according to the demand of user, affects the accuracy of test data when oil sample is uneven or have bubble.
Summary of the invention
The technical problem to be solved in the present invention provides one to have automatic detection function for the deficiencies in the prior art, automatically enter reset mode and perform pressure regulator back to zero, there is automatic printing output function, test parameter can be changed according to user's request, flexible operation, can eliminate the uneven of oil sample and bubble improves the dielectric oil dielectrical strength auto testing instrument testing accuracy rate.
For solving the problems of the technologies described above the present invention by the following technical solutions, dielectric oil dielectrical strength auto testing instrument, comprises hyperbaric chamber, and described hyperbaric chamber comprises hyperbaric chamber cabin body, is provided with at least two high-pressure columns in the body of hyperbaric chamber cabin, is provided with lubricating cup between every two high-pressure columns;
The wall of cup of described lubricating cup is connected with two axostylus axostyles, axostylus axostyle runs through the wall of cup of lubricating cup, one end of axostylus axostyle is arranged on lubricating cup inside, the other end of axostylus axostyle is arranged on lubricating cup outside, lubricating cup is by being supported between two high-pressure columns at the axostylus axostyle of its outside, the one end every root axostylus axostyle being positioned at lubricating cup is connected with electrode, has gap between two electrodes.
Below further improvement of the present invention:
The quantity of described high-pressure column is two.
Further improvement:
Every root axostylus axostyle is provided with the axostylus axostyle fixed screw for locking axostylus axostyle, and axostylus axostyle fixed screw is arranged on lubricating cup outside.
Further improvement:
Described auto testing instrument also comprises control panel, described control panel has power switch, supply socket, hyperbaric chamber, safety switch, safety ground socket, 3A insurance, display screen, setting dish, pilot lamp, keyboard.
Further improvement:
Described control panel is also provided with printer.
Further improvement:
Described printer is miniature TPU-A panel type printer.
Further improvement:
Auto testing instrument also comprises digital signal processor, digital signal processor is electrically connected with scrambler, storer, motor o controller and sign-changing amplifier;
Described motor o controller is electrically connected with stirring motor, described storer is electrically connected with display screen and button processor.
Further improvement:
Described sign-changing amplifier is electrically connected with operational amplifier, described operational amplifier model is LM324, the input end of operational amplifier is electrically connected with sign-changing amplifier, is connected with electrode, is electrically connected with transformer between electrode and operational amplifier between the positive-negative power end of operational amplifier.
Further improvement:
Described sign-changing amplifier is also electrically connected with two relays.
Further improvement:
Described sign-changing amplifier is also electrically connected with L062 type dual operational amplifier, dual operational amplifier is electrically connected with LM324 type operational amplifier, LM324 type operational amplifier is electrically connected with motor, dual operational amplifier is also electrically connected with power supply by switch;
The model of described digital signal processor is ATM64;
Sign-changing amplifier model is H8031;
Described storer model is 8234 storeies;
Described button processor model is HC22.
The present invention adopts technique scheme to have following beneficial effect:
1, the requirement of international IEC-156 and GB GB507-86<< dielectric oil dielectrical strength determination method >> is reached;
2, adopt single-chip microcomputer to take as the leading factor, first set the method for test of starting shooting afterwards, all processes runs control automatically by microcomputer, simple to operate, convenient applicable;
3, there is automatic detection function, automatically enter reset mode during start and perform pressure regulator back to zero;
4, have employed miniature TPU-A panel type printer, automatic printing exports;
5, can change testing time, stirring time of repose, the light-operated prompting of acoustic control, print with non-print continuously according to user's request;
6, adopt full-automatic magnon to stir, eliminate the uneven and bubble of oil sample.
Below in conjunction with drawings and Examples, technique scheme is described further:
Accompanying drawing illustrates:
Accompanying drawing 1 is the structural representation of control panel of the present invention;
The inner structure schematic diagram of accompanying drawing 2 hyperbaric oxygen chamber;
Accompanying drawing 3 is the schematic diagram of setting dish;
Accompanying drawing 4 is the structural representation of function key;
Accompanying drawing 5 is the display view of pilot lamp in mixing time;
Accompanying drawing 6 is the display view of pilot lamp in rest time;
Accompanying drawing 7 is the display view of pilot lamp in boost process;
Accompanying drawing 8 punctures the display view of rear indicator light for oil sample;
The display view of accompanying drawing 9 pilot lamp when rear selection is light-operated for oil sample punctures.；
Accompanying drawing 10 is electrical schematic of the present invention.
In figure: 1-power switch; 2-supply socket; 3-hyperbaric chamber; 4-safety switch; 5-safety ground socket; 6-3A insures; 7-display screen; 8-setting dish; 9-pilot lamp; 10-keyboard; 11-printer; 301-hyperbaric chamber cabin body; 302-high-pressure column; 303-axostylus axostyle; 304-lubricating cup; 305-axostylus axostyle fixed screw; 306-electrode; 307-clearance gauge; 308-magnon.
Embodiment
Embodiment 1, as shown in Figure 1, dielectric oil dielectrical strength auto testing instrument, comprise control panel, described control panel has power switch 1, supply socket 2, hyperbaric chamber 3, safety switch 4, safety ground socket 5,3A insurance 6, display screen 7, setting dish 8, pilot lamp 9, keyboard 10 and printer 11.
As shown in Figure 2, described hyperbaric chamber 3 comprises hyperbaric chamber cabin body 301, is provided with between two high-pressure columns, 302, two high-pressure columns 302 and is provided with lubricating cup 304 in hyperbaric chamber cabin body 301.
The wall of cup of described lubricating cup 304 is connected with two axostylus axostyles 303, axostylus axostyle 303 runs through the wall of cup of lubricating cup 304, one end of axostylus axostyle 303 is arranged on lubricating cup 304 inside, the other end of axostylus axostyle 303 is arranged on lubricating cup 304 outside, lubricating cup 304 is by being supported between two high-pressure columns 302 at the axostylus axostyle 303 of its outside, the one end every root axostylus axostyle 303 being positioned at lubricating cup 304 is connected with electrode 306, has gap between two electrodes 306.
Every root axostylus axostyle 303 is provided with the axostylus axostyle fixed screw 305 for locking axostylus axostyle 303, and it is outside that axostylus axostyle fixed screw 305 is arranged on lubricating cup 304.
As shown in Figure 10, auto testing instrument also comprises digital signal processor, digital signal processor is electrically connected with scrambler, storer, motor o controller and sign-changing amplifier.
Described motor o controller is electrically connected with stirring motor, described storer is electrically connected with display screen and button processor.
Described sign-changing amplifier is electrically connected with operational amplifier, described operational amplifier model is LM324, the input end of operational amplifier is electrically connected with sign-changing amplifier, is connected with electrode 306, is electrically connected with transformer between electrode 306 and operational amplifier between the positive-negative power end of operational amplifier.
Described sign-changing amplifier is also electrically connected with two relays.
Described sign-changing amplifier is also electrically connected with L062 type dual operational amplifier, dual operational amplifier is electrically connected with LM324 type operational amplifier, LM324 type operational amplifier is electrically connected with motor, dual operational amplifier is also electrically connected with power supply by switch.
The model of described digital signal processor is ATM64.
Sign-changing amplifier model is H8031.
Described storer model is 8234 storeies.
Described button processor model is HC22.
Adopt such scheme to have automatic detection function, automatically enter reset mode during start and perform pressure regulator back to zero; Have employed miniature TPU-A panel type printer, automatic printing exports; Can change testing time, stirring time of repose, the light-operated prompting of acoustic control, print with non-print continuously according to user's request; Adopt full-automatic magnon to stir, eliminate the uneven and bubble of oil sample.
Embodiment 2, dielectric oil dielectrical strength auto testing instrument, is provided with at least two high-pressure columns 302 in hyperbaric chamber cabin body 301 as different from Example 1, every two is one group, often organize high-pressure column 302 and a hyperbaric chamber 3 can be set, can carry out organizing experiment more simultaneously, substantially increase work efficiency.
As shown in Fig. 3-Fig. 9, tester operation steps of the present invention is as follows:
1, input power
Connect safety ground, insert 220V AC power, detect power supply correct.
2, draw oil sample
2.1, the spacing of two electrodes 306 in lubricating cup 304 is adjusted at 2.5mm; Electrode 306 in lubricating cup 304 is adjusted position in partially, axostylus axostyle fixed screw 305 is screwed, gets clearance gauge 307 and be close to two electrodes 306 between two electrodes 306, pin axostylus axostyle fixed screw 305 and take out clearance gauge 307.
2.2, lubricating cup 304 is processed totally, put clean magnon 308 in lubricating cup, fill ready
Oil sample, take off EHT cage put lubricating cup 304 in hyperbaric chamber between two high-pressure columns 302 between, steadily place and cover EHT cage and press safety switch.
3, predetermined set
3.1, as shown in Figure 3, setting value has 6 preliminary election dishes.
1. represent number of times setting, can choose from 1-9 figure place the number of times tested needed for you by "+" "-" number.
2. 3. represent mixing time setting, 2. represent that 3. ten represent positions, 1 point of 39 stopwatch registration is 99 that is 60 seconds+39 seconds.
4. 5. 6. represent time of repose setting, 4. represent that 5. " dividing " individual position represents the individual position 6. representing " second " " second " ten, 10 point of 39 stopwatch registration be 999 that is 9 points+60 seconds+39 seconds.
4. function key operation
As shown in Figure 4, function key has 6, belongs to crawl key, clicks and just can respond work.
4.1 to be tested time press " measured value " key, stir, leave standstill, boost, print each function and can go by fixed numerical order.
4.2 press " stopping " key in boost process, boosting will be stopped, numerical value on digital-scroll technique is exactly the high-voltage value of now high-pressure side positive output, can keep synchronously constant, pin this key not put and can turn down High voltage output value, former running status can not be changed by stop key, continue to resume operation as long as press measured value key again.
After 4.3 first times boosting oil sample punctures, acoustic control reminds continuously " ticking " short sound 20 seconds, the short sound of second time rear " ticking " two, 6th time " ticking ", the short sound of one long sound one, the short sound of 7th time " ticking " long sound two, after value to be averaged has shown, " ticking " uninterruptedly rings 20 seconds, if reminded without acoustic control, click acoustic control key and just enter light-operated prompting, light-operated pilot lamp is bright, glittering number of times is the same with " ticking " sound number of times, press acoustic control key more invalid, keep light-operated constant, need again opening power time acoustic control effective.
4.4 test after, when checking data again as thought, press " display " " printing " key, this two key belong to reuses key, press " display " key and once show a test value, until show mean value, repeat show complete.When pressing " printing " key, the duplicate printing magnitude of voltage time is not in printing.
4.5 when pressing " reset " key, be shown as the English printed words of OCPU be expressed as reset put in place after initial waiting state, be called for short initial state or OCPU state, with press " reset " key testing in boost process, initial state will not be entered, situation when puncturing with oil sample is the same, continues to run not change former running status, now confirms as " reset " as pressed " reset " key continuously again then enters initial state.
5, booting wait puts power switch in " ON ", and the machine enters self-inspection state, and printer echo pilot lamp is bright, display screen display OCPU printed words, if pressure regulator is not in zero-bit, this expression reseting procedure of display DIJJ printed words, decline pilot lamp is bright, is shown as OCPU initial waiting state after dropping to zero-bit.
6, measured value
Crawl " measured value " key, starts to run according to the numerical value preset; Stir the bright magnon fast rotational of pilot lamp, display screen first Digital sum display first time number of times, rear three display mixings time; Stir complete, oscillator stops stirring pilot lamp and goes out, leave standstill bright beginning of pilot lamp to leave standstill, after pilot lamp goes out, combined floodgate, boosting pilot lamp are bright, enter display synchronous boost, now after display screen, three Digital sum are shown as voltage (00.0KV) after oil sample punctures, booster power automatic brake separating, display screen stops display 5 seconds, printer time-write interval, magnitude of voltage; Under pressure regulator, fall pilot lamp bright, stir the bright second time test of pilot lamp and start, printing simultaneously, display screen display voltage breakdown, display time numerical value flicker, acoustic control prompting; After pressure regulator back to zero, decline pilot lamp goes out, show stop flicker, acoustic control disappear, then second time test; After all testing times runs, the mean value of display screen display total degree, represents with English alphabet and (A, B, C, D, E, F, G, H, y) being once shown as A24.3KV as only tested, being shown as F24.3KV as tested six times; Then print average voltage, oil sample is completed, and now can repeat display, print, and after reset key, all data disappear.Under OPCU state, take out oil sample, just replaceable new oil sample is tested again, is completed OFF position in the reset state and closes power source.
During measured value, as shown in Figure 5, in mixing time, stir pilot lamp bright;
As shown in Figure 6, in time of repose, leave standstill pilot lamp bright;
As shown in Figure 7, in boost process, rise, combined floodgate pilot lamp is bright;
As shown in Figure 8, oil sample swash wear after, pressure regulator back to zero, the while that decline pilot lamp being bright, mixing time starts next time, stir pilot lamp bright;
As shown in Figure 9, oil sample swash wear after, can select light-operated, light-operated pilot lamp is bright.
Tester technical specification of the present invention is as follows:
1. working power: AC220V ± 10%, 50HZ ± 5%
2. measurement range: AC0-80KV
3. current limit: 5mA
4. measuring accuracy: 1%
5. pressure regulation speed: 2KV/S ± 10%
6. predetermined set: number of times 1-9
Mixing time 0-1 divides 39 seconds
Time of repose 0-10 divides 39 seconds
7. service condition: environment temperature 0 DEG C-35 DEG C
Relative humidity≤75%
8. power: 300VA.
Claims (10)
1. dielectric oil dielectrical strength auto testing instrument, comprise hyperbaric chamber (3), it is characterized in that: described hyperbaric chamber (3) comprises hyperbaric chamber cabin body (301), be provided with at least two high-pressure columns (302) in hyperbaric chamber cabin body (301), between every two high-pressure columns (302), be provided with lubricating cup (304);
The wall of cup of described lubricating cup (304) is connected with two axostylus axostyles (303), axostylus axostyle (303) runs through the wall of cup of lubricating cup (304), one end of axostylus axostyle (303) is arranged on lubricating cup (304) inside, the other end of axostylus axostyle (303) is arranged on lubricating cup (304) outside, lubricating cup (304) is supported between two high-pressure columns (302) by the axostylus axostyle (303) being positioned at its outside, the one end every root axostylus axostyle (303) being positioned at lubricating cup (304) is connected with electrode (306), has gap between two electrodes (306).
2. dielectric oil dielectrical strength auto testing instrument according to claim 1, is characterized in that: the quantity of described high-pressure column (302) is two.
3. dielectric oil dielectrical strength auto testing instrument according to claim 2, it is characterized in that: every root axostylus axostyle (303) is provided with the axostylus axostyle fixed screw (305) for locking axostylus axostyle (303), and it is outside that axostylus axostyle fixed screw (305) is arranged on lubricating cup (304).
4. dielectric oil dielectrical strength auto testing instrument according to claim 1, it is characterized in that: described auto testing instrument also comprises control panel described control panel having power switch (1), supply socket (2), hyperbaric chamber (3), safety switch (4), safety ground socket (5), 3A insurance (6), display screen (7), setting dish (8), pilot lamp (9), keyboard (10).
5. dielectric oil dielectrical strength auto testing instrument according to claim 4, is characterized in that: described control panel is also provided with printer (11).
6. dielectric oil dielectrical strength auto testing instrument according to claim 5, is characterized in that: described printer (11) is miniature TPU-A panel type printer.
7. dielectric oil dielectrical strength auto testing instrument according to claim 1, is characterized in that: auto testing instrument also comprises digital signal processor, digital signal processor is electrically connected with scrambler, storer, motor o controller and sign-changing amplifier;
Described motor o controller is electrically connected with stirring motor, described storer is electrically connected with display screen and button processor.
8. dielectric oil dielectrical strength auto testing instrument according to claim 7, it is characterized in that: described sign-changing amplifier is electrically connected with operational amplifier, described operational amplifier model is LM324, the input end of operational amplifier is electrically connected with sign-changing amplifier, be connected with electrode between the positive-negative power end of operational amplifier, between electrode and operational amplifier, be electrically connected with transformer.
9. dielectric oil dielectrical strength auto testing instrument according to claim 8, is characterized in that: described sign-changing amplifier is also electrically connected with two relays.
10. dielectric oil dielectrical strength auto testing instrument according to claim 9, it is characterized in that: described sign-changing amplifier is also electrically connected with L062 type dual operational amplifier, dual operational amplifier is electrically connected with LM324 type operational amplifier, LM324 type operational amplifier is electrically connected with motor, dual operational amplifier is also electrically connected with power supply by switch;
The model of described digital signal processor is ATM64;
Sign-changing amplifier model is H8031;
Described storer model is 8234 storeies;
Described button processor model is HC22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510598122.XA CN105137307A (en) | 2015-09-18 | 2015-09-18 | Automatic tester for dielectric strength of insulating oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510598122.XA CN105137307A (en) | 2015-09-18 | 2015-09-18 | Automatic tester for dielectric strength of insulating oil |
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| CN105137307A true CN105137307A (en) | 2015-12-09 |
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| CN201510598122.XA Pending CN105137307A (en) | 2015-09-18 | 2015-09-18 | Automatic tester for dielectric strength of insulating oil |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443374A (en) * | 2016-09-14 | 2017-02-22 | 广东电网有限责任公司电力科学研究院 | Vegetable oil gel dielectric strength testing device and method |
| CN107942217A (en) * | 2018-01-10 | 2018-04-20 | 国网江苏省电力有限公司南通供电分公司 | Novel insulating oil dielectric strength tester |
| CN108732479A (en) * | 2018-05-25 | 2018-11-02 | 云南电网有限责任公司电力科学研究院 | Visualization paper oil insulation electric heating based on magnon agitation cycle combines aging equipment |
| CN109490934A (en) * | 2018-12-19 | 2019-03-19 | 上海平高天灵开关有限公司 | A kind of vacuum interrupter X-ray detection platform |
| CN110596555A (en) * | 2019-10-11 | 2019-12-20 | 国网湖北省电力有限公司电力科学研究院 | Electrode gap adjusting device and method for dielectric oil voltage resistance detection |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008160151A (en) * | 2008-02-18 | 2008-07-10 | Arisawa Mfg Co Ltd | Flexible printed wiring board and multilayer flexible printed wiring board, and mobile telephone terminal using multilayer flexible printed wiring board |
| CN202052501U (en) * | 2011-04-26 | 2011-11-30 | 常州市武进东方绝缘油有限公司 | Test cup |
| CN102495341A (en) * | 2011-12-13 | 2012-06-13 | 天津市电力公司 | Multifunctional cross-linked polyethylene (XLPE) insulating performance tester |
| CN202956469U (en) * | 2012-12-26 | 2013-05-29 | 苏州市华安普电力工程有限公司 | Tester for testing dielectric strength of insulating oil |
| CN203406153U (en) * | 2013-09-03 | 2014-01-22 | 国家电网公司 | Intelligently-controlled transformer |
| CN203981824U (en) * | 2014-05-28 | 2014-12-03 | 国网山西省电力公司电力科学研究院 | A kind of insulating oil withstand voltage tester |
-
2015
- 2015-09-18 CN CN201510598122.XA patent/CN105137307A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008160151A (en) * | 2008-02-18 | 2008-07-10 | Arisawa Mfg Co Ltd | Flexible printed wiring board and multilayer flexible printed wiring board, and mobile telephone terminal using multilayer flexible printed wiring board |
| CN202052501U (en) * | 2011-04-26 | 2011-11-30 | 常州市武进东方绝缘油有限公司 | Test cup |
| CN102495341A (en) * | 2011-12-13 | 2012-06-13 | 天津市电力公司 | Multifunctional cross-linked polyethylene (XLPE) insulating performance tester |
| CN202956469U (en) * | 2012-12-26 | 2013-05-29 | 苏州市华安普电力工程有限公司 | Tester for testing dielectric strength of insulating oil |
| CN203406153U (en) * | 2013-09-03 | 2014-01-22 | 国家电网公司 | Intelligently-controlled transformer |
| CN203981824U (en) * | 2014-05-28 | 2014-12-03 | 国网山西省电力公司电力科学研究院 | A kind of insulating oil withstand voltage tester |
Non-Patent Citations (2)
| Title |
|---|
| 安徽省电力公司: "《变电运行与检修专业》", 31 January 2008, 中国电力出版社 * |
| 崔雪英 等: ""绝缘油介电强度测试仪的设计"", 《工业仪表与自动化装置》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443374A (en) * | 2016-09-14 | 2017-02-22 | 广东电网有限责任公司电力科学研究院 | Vegetable oil gel dielectric strength testing device and method |
| CN107942217A (en) * | 2018-01-10 | 2018-04-20 | 国网江苏省电力有限公司南通供电分公司 | Novel insulating oil dielectric strength tester |
| CN108732479A (en) * | 2018-05-25 | 2018-11-02 | 云南电网有限责任公司电力科学研究院 | Visualization paper oil insulation electric heating based on magnon agitation cycle combines aging equipment |
| CN109490934A (en) * | 2018-12-19 | 2019-03-19 | 上海平高天灵开关有限公司 | A kind of vacuum interrupter X-ray detection platform |
| CN109490934B (en) * | 2018-12-19 | 2022-11-25 | 上海平高天灵开关有限公司 | X-ray detection platform for vacuum arc-extinguishing chamber |
| CN110596555A (en) * | 2019-10-11 | 2019-12-20 | 国网湖北省电力有限公司电力科学研究院 | Electrode gap adjusting device and method for dielectric oil voltage resistance detection |
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Application publication date: 20151209 |