CN104849600B - A kind of arrester detecting device and its application method - Google Patents
A kind of arrester detecting device and its application method Download PDFInfo
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- CN104849600B CN104849600B CN201510284555.8A CN201510284555A CN104849600B CN 104849600 B CN104849600 B CN 104849600B CN 201510284555 A CN201510284555 A CN 201510284555A CN 104849600 B CN104849600 B CN 104849600B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 109
- 238000005259 measurement Methods 0.000 claims abstract description 14
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 7
- 239000011787 zinc oxide Substances 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 7
- 238000009413 insulation Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a kind of arrester detecting device and its application method, device includes support meanss, detection means, mobile device, controller and two geometrical clamps, support meanss include multiple fixed stations for fixing arrester, and multiple fixed stations are horizontally fixed on support base；Mobile device band motion detection device is moved, and mobile device is arranged on the top of support meanss or the side of support meanss, and detection means and mobile device are individually connected with controller respectively.The beneficial effects of the invention are as follows：By setting multiple arresters on a support base, the detection of electrical leakage to arrester is realized with motion detection device by mobile device；Whole device simple structure, can realize the measurement successively to multiple arresters on a line, realize automatic measurement, save manpower；On one wire when detection means is when second or the 3rd arrester is measured, first arrester can be recovered its lead, and dismantled, while installing arrester to be detected.
Description
Technical field
The present invention relates to arrester field of measuring technique, specifically a kind of simple structure, arrester easy to use
Detection means and its application method.
Background technology
With continuing to develop for power network, numerous distribution transformers and cable run etc. will install arrester as lightning protection
Protection, therefore, the larger electrical test task of the probability of surge arrester failure is increasingly weighed in 10KV power distribution networks, but arrester every time
Measurement leakage current, can only once measure an arrester, and each test procedure is as follows：1st, (dismounting or connection are prepared before testing
Fixture wire is all to remove fixture wire), 2, arrester is boosted, 3, DC leakage-current arrester is detected,
4th, thoroughly electric discharge, the time that step 1 needs probably is, in 30s~40s, to need first to boost arrester in step 2, inspection
, it is necessary to carry out step-down work to arrester after having surveyed, because of the problem of high pressure, using manual detection, operation has certain peace
Full hidden danger；The time of 1min is probably needed in step 4, and if time-consuming, arrester could not be reached in step 4 thorough
Electric discharge, is manually carried out if replacing arrester, and potential safety hazard is big；Arrester number per secondary detection is more, examines one by one
, it is necessary to repeat step 1 to step 4 if survey, and without fixing device, operating efficiency is relatively low, works together quite numerous
Trivial, this traditional Working Means and method can not increasingly meet requirement.
The content of the invention
Task of the invention shortens detection time, it is desirable to provide an arrester checks in order to be able to improve the efficiency of measurement
Device and its application method.
In order to reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of arrester detecting device, including support meanss, detection means, mobile device, controller and be respectively used to solid
Determine two geometrical clamps of high-voltage line and detection means detection line, wherein：
Support meanss include multiple fixed stations for fixing arrester, and multiple fixed stations are consolidated according to the distance level of setting
It is scheduled on support base；Detection means is used to detect arrester that mobile device band motion detection device to be moved, and mobile device is set
In the top of support meanss or the side of support meanss, detection means and mobile device are individually connected with controller respectively；It is fixed
It is clamping to determine on detection means.
Further, mobile device includes straight line slide unit, column and motor, and the slide rail of straight line slide unit is arranged on by column
The side of the support meanss, slide rail is be arranged in parallel with support base, and the sliding stand of straight line slide unit is moved horizontally on slide rail, motor
It is vertically arranged on sliding stand, motor and straight line slide unit with the controller respectively by being wirelessly connected.
Or, mobile device includes cross slid platform, sliding stand and column, and cross slid platform includes horizontal rail and vertical rail
Road, horizontal rail is arranged on the surface of the support meanss by column, and sliding stand is arranged on vertical rail, the cross
Slide unit is connected with controller.
Further, detection means is vertically arranged on the sliding stand.
Further, geometrical clamp includes fixed pedestal and arc covers, and the upper surface of fixed pedestal is in circular arc, arc covers and
Fixed pedestal coordinates for fixing high pressure spool.
Further, the top of motor is provided with fixed plate, and described detection means is set in fixed plate.
Further, two geometrical clamps are arranged on the top of the detection means.
Further, there is a mounting hole at the center of fixed station, and arrester is set in mounting hole, and the bottom of mounting hole connects
Ground.
A kind of application method of arrester detecting device, comprises the following steps that：
1) distance according to setting on support base sets at least 3 fixed stations；
2) distance in the side interval setting of support base is vertically arranged two columns, and straight line slide unit is arranged horizontally in into two
The top of individual column, the sliding stand on straight line slide unit is horizontally disposed, and straight line slide unit is with controller by being wirelessly or non-wirelessly connected；
3) motor is set on sliding stand, and motor is with controller by being wirelessly or non-wirelessly connected；
4) detection means is horizontally fixed on sliding stand；
5) two geometrical clamps are fixed above sliding stand, one is used to fix high-voltage line, and another is used for fixed test
The detection line of device, the fixed-direction for being fixed on high-voltage line and detection line on geometrical clamp is identical and parallel with slide rail；
6) zinc oxide surge arresters successively on each fixed station, open the switch of whole device；
7) sliding stand on controller control straight line slide unit moves to first side of fixed station along slide rail；
8) controller controlled motor is rotated by 90 ° so that the end of a thread of high-voltage line and the gauge head of detection line to first arrester
Head, arrester is boosted by high-voltage line, arrester is measured by detection means；
9) controller controlled motor is rotated by 90 ° so that high-voltage line and detection line return to original state；
10) sliding stand on controller control straight line slide unit continues to the side of next fixed station along slide rail；
11) repeat step 8)-step 10), until completing the measurement to the arrester of the setting on support base；
12) controller control sliding stand returns to original position；
13) repeat step 7)-step 12), until closing switch or power supply.
Or, a kind of application method of arrester detecting device is comprised the following steps that：
1) distance according to setting on support base sets at least 3 fixed stations；
2) one cross slid platform is set in the top of support base, the horizontal rail of cross slid platform is parallel with support base, cross
Another track of slide unit is vertically arranged in one end of horizontal rail；
3) set on sliding stand on vertical rail；
4) detection means is fixed on sliding stand vertically；
5) two geometrical clamps are fixed above sliding stand, one is used to fix high-voltage line, and another is used for fixed test
The detection line of device, is fixed on high-voltage line and detection line on geometrical clamp and arranges straight down；
6) zinc oxide surge arresters successively on each fixed station, open the switch of whole device；
7) controller control sliding stand moves to first top of arrester along horizontal rail；
8) controller control sliding stand moves down the position of setting, the end of a thread and detection until high-voltage line along vertical rail
The gauge head of line is against the upper end of arrester, and arrester is boosted by high-voltage line, and arrester is carried out by detection means
Measurement；
9) controller control sliding stand moves up the position of setting along vertical rail；
10) controller control sliding stand advances to the top of next arrester along horizontal rail；
11) repeat step 8)-step 10), until completing the measurement to the arrester of the setting on support base；
12) controller control sliding stand returns to original position；
13) repeat step 7)-step 12), until closing switch or power supply.
Operation principle of the invention is：Multiple fixed stations are set on support base, one are set on each fixed station and is taken shelter from the thunder
Device so that point-blank, detection means is arranged on the side of support base or the top of support base to arrester, works as detection
When device is arranged on the side of support base, the end of a thread height of the gauge head of detection line and high-voltage line is with the top of arrester in same water
In plane, rotated by motor, realize boosting and measure；When detection means is arranged on the top of support base, slided by cross
The movement in the horizontally and vertically direction of platform, realizes the boosting successively and detection to multiple arresters on straight line.
The beneficial effects of the invention are as follows：
1) by setting multiple arresters on a support base, one movement is set in the side or above of support base
Device, the detection of electrical leakage to arrester is realized with motion detection device by mobile device；Whole device simple structure, on a line
The measurement successively to multiple arresters can be realized, automatic measurement is realized, manpower is saved；
2) first arrester is put when detection means is when next arrester is measured on one wire
Electricity, recover its lead, and dismantle, while installing arrester to be detected, so help saves many times, is not in
The time of wait；
3) geometrical clamp set on arrester efficiently solves the potential safety hazard of high pressure presence；
4) by the action of whole automation, detection efficiency is improve, while reducing detection error.
Brief description of the drawings
Fig. 1 is the structure chart of embodiment 1 in the present invention；
Fig. 2 is the enlarged drawing in embodiment 1 at sliding stand in the present invention；
Fig. 3 is the structure chart of geometrical clamp in the present invention；
Fig. 4 is the structure chart of embodiment 2 in the present invention；
Wherein：1. sliding stand, 2. detection means, 3. detection line, 4. gauge head, 5. insulate spool, 6. controller, 7. slide rail,
8. fixed station, 9. support base, 10. pillar, 11. arresters, 12. motors, 13. fixed plates, 14. high-voltage lines, 15. arc covers, 16.
Deep-slotted chip breaker, 17. vertical rails, 18. fixed pedestals.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description.
Embodiment 1
As Figure 1-3, a kind of arrester detecting device, including support meanss, detection means, mobile device, controller 6
With two geometrical clamps for being respectively used to fix high-voltage line 14 and detection means detection line 3, wherein：
Support meanss include multiple fixed stations 8 for fixing arrester, and multiple fixed stations 8 are according to the distance level for setting
It is fixed on support base 9；Detection means is used to detect arrester 11 that mobile device band motion detection device to be moved, mobile dress
Put the side of the top or support meanss that are arranged on support meanss, detection means and mobile device respectively with the independent phase of controller
Even；Geometrical clamp is fixed on detection means, and support base is an elongated support frame, and controller is arranged on the side of support base.
Mobile device includes straight line slide unit, column 10 and motor 12, and the slide rail 7 of straight line slide unit is arranged on institute by column 10
The side of support meanss is stated, slide rail 7 be arranged in parallel with support base, the sliding stand 1 of straight line slide unit is moved horizontally on slide rail 7, electricity
Machine 12 is vertically arranged on sliding stand 1, and motor 12 and straight line slide unit are respectively by wireless or wired with the phase of the controller 6
Even；The detection line 3 of detection means, high-voltage line 14, the power line of straight line slide unit are elastic cable, and the centre of elastic cable is accommodated in
In insulation spool, insulation spool is arranged on the side of straight line slide unit, and the top of motor 12 is provided with fixed plate 13, is set in fixed plate
Put described detection means 2.
Geometrical clamp includes fixed pedestal 18 and arc covers 15, and the upper surface of fixed pedestal 18 is provided with deep-slotted chip breaker 16, arc covers
15 and fixed pedestal coordinate for fixing high pressure spool, when high-voltage line or detection line are placed in geometrical clamp, by arc
Lid and fixed pedestal are fastened by fastener such as bolt and nut, are to detection line at the gauge head of detection line from geometrical clamp
It is rigid, from geometrical clamp to high-voltage line at the end of a thread of high-voltage line for rigid, on the one hand ensure gauge head when arrester is propped up
Line is indeformable, on the other hand aids in fixed arrester, convenient detection, additionally, fixed detection line on geometrical clamp and high-voltage line
Than the arrester top 0.1-0.3mm high being arranged on fixed station.
Two geometrical clamps are arranged on the top of the detection means.
There is a mounting hole at the center of fixed station, and arrester, the Bottom ground of mounting hole are set in mounting hole.
Above in each device, the shell of fixed station, support base, geometrical clamp and detection means is made up of insulating materials.
A kind of application method of arrester detecting device, comprises the following steps that：
1) distance according to setting on support base 9 sets 6 fixed stations 8；
2) distance in the side interval setting of support base 9 is vertically arranged two columns 10, and straight line slide unit is horizontally disposed
On two tops of column 10, the sliding stand 1 on straight line slide unit is horizontally disposed, and straight line slide unit passes through wireless or has with controller 6
Line is connected；
3) motor 12 is set on sliding stand 1, and motor 12 is with controller 6 by being wirelessly or non-wirelessly connected；
4) detection means 2 is horizontally fixed on sliding stand 1；
5) two geometrical clamps are fixed in the top of sliding stand 1, one is used to fix high-voltage line 14, and another is used for fixed inspection
The detection line 3 of device is surveyed, the fixed-direction for being fixed on high-voltage line and detection line on geometrical clamp is identical and parallel with slide rail；
6) zinc oxide surge arresters 11 successively on each fixed station, open the switch of whole device；
7) sliding stand on the control of controller 6 straight line slide unit moves to first side of fixed station 8 along slide rail；
8) controller controlled motor 12 is rotated by 90 ° so that the end of a thread of high-voltage line and the gauge head of detection line are lightning-arrest to first
The head of device, is boosted by high-voltage line to arrester, and arrester is measured by detection means；
9) controller controlled motor is rotated by 90 ° so that high-voltage line and detection line return to original state；
10) sliding stand on controller control straight line slide unit continues to the side of next fixed station along slide rail；
11) repeat step 8)-step 10), until completing the measurement to the arrester of the setting on support base；
12) controller control sliding stand returns to original position；
13) repeat step 7)-step 12), until closing switch or power supply.
Embodiment 2
As shown in figure 4, a kind of arrester detecting device, including support meanss, detection means, mobile device, the and of controller 6
It is respectively used to fix two geometrical clamps of high-voltage line 14 and detection means detection line 3, wherein：
Support meanss include multiple fixed stations 8 for fixing arrester, and multiple fixed stations 8 are according to the distance level for setting
It is fixed on support base；Detection means is used to detect arrester 11 that mobile device band motion detection device 2 to be moved, mobile dress
Put the side of the top or support meanss that are arranged on support meanss, detection means and mobile device respectively with the independent phase of controller
Even；Geometrical clamp is fixed on detection means.
Mobile device includes cross slid platform, sliding stand and column 10, and cross slid platform includes horizontal rail and vertical rail 17,
Horizontal rail is arranged on the surface of the support meanss by column 10, and sliding stand 1 is arranged on vertical rail, cross slid platform
It is connected with controller 6, insulation spool, the detection line of detection means, high-voltage line, cross slid platform is set in the side of the controller
Power line be elastic cable, the centre of elastic cable is accommodated in insulation spool, and detection means is vertically arranged in the slip
On platform.
Two geometrical clamps are arranged on the top of the detection means 2.
There is a mounting hole at the center of fixed station, and arrester 11, the Bottom ground of mounting hole are set in mounting hole.
Above in each device, the shell of fixed station 8, support base 9, geometrical clamp and detection means 2 is made up of insulating materials
's.
A kind of application method of arrester detecting device, comprises the following steps that：
1) distance according to setting on support base 9 sets 6 fixed stations；
2) cross slid platform is set in the top of support base 9, the horizontal rail of cross slid platform is parallel with support base 9, ten
Another track of word slide unit is vertically arranged in one end of horizontal rail；
3) sliding stand 1 is set on vertical rail；
4) detection means 2 is fixed on sliding stand 1 vertically；
5) two geometrical clamps are fixed in the top of sliding stand 1, one is used to fix high-voltage line, and another is used for fixed test
The detection line of device, is fixed on high-voltage line and detection line on geometrical clamp and arranges straight down；
6) zinc oxide surge arresters 11 successively on each fixed station, open the switch of whole device；
7) control of controller 6 sliding stand moves to first top of arrester along horizontal rail；
8) control of controller 6 sliding stand moves down the position of setting, the end of a thread and inspection until high-voltage line along vertical rail
The gauge head of survey line is against the upper end of arrester, and arrester is boosted by high-voltage line, and arrester is entered by detection means 2
Row measurement；
9) control of controller 6 sliding stand moves up the position of setting along vertical rail；
10) control of controller 6 sliding stand advances to the top of next arrester along horizontal rail；
11) repeat step 8)-step 10), until completing the measurement to the arrester 11 of the setting on support base；
12) controller control sliding stand returns to original position；
13) repeat step 7)-step 12), until closing switch or power supply.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (2)
1. a kind of application method of arrester detecting device, the arrester detecting device includes support meanss, detection means, shifting
Move device, controller and be respectively used to fix two geometrical clamps of high-voltage line and detection means detection line, wherein：
Support meanss include multiple fixed stations for fixing arrester, and multiple fixed stations are horizontally fixed on according to the distance of setting
On support base；Detection means is used to detect arrester that mobile device band motion detection device to be moved, and mobile device is arranged on branch
The top of support arrangement or the side of support meanss, detection means and mobile device are individually connected with controller respectively；Fixation is clamping
Determine on detection means；
The mobile device includes straight line slide unit, column and motor, and the slide rail of straight line slide unit is arranged on the support by column
The side of device, slide rail is be arranged in parallel with support base, and the sliding stand of straight line slide unit is moved horizontally on slide rail, and motor is vertically arranged
On sliding stand, motor and straight line slide unit with the controller respectively by being wirelessly connected；
Characterized in that, comprising the following steps that：
1）Distance according to setting on support base sets at least 3 fixed stations；
2）Two columns are vertically arranged in the distance of the side interval setting of support base, straight line slide unit is arranged horizontally in into two stands
The top of post, the sliding stand on straight line slide unit is horizontally disposed, and straight line slide unit is with controller by being wirelessly or non-wirelessly connected；
3）Motor is set on sliding stand, and motor is with controller by being wirelessly or non-wirelessly connected；
4）Detection means is horizontally fixed on sliding stand；
5）Two geometrical clamps are fixed above detection means, one is used to fix high-voltage line, and another is filled for fixed test
The detection line put, the high-voltage line and the fixed-direction of detection line being fixed on geometrical clamp is identical and parallel with slide rail；
6）The zinc oxide surge arresters successively on each fixed station, open the switch of whole device；
7）Sliding stand on controller control straight line slide unit moves to first side of fixed station along slide rail；
8）Controller controlled motor is rotated by 90 ° so that the end of a thread of high-voltage line and the gauge head of detection line to first head of arrester
Portion, is boosted by high-voltage line to arrester, and arrester is measured by detection means；
9）Controller controlled motor is rotated by 90 ° so that high-voltage line and detection line return to original state；
10）Sliding stand on controller control straight line slide unit continues to the side of next fixed station along slide rail；
11）Repeat step 8）- step 10）, until completing the measurement to the arrester of the setting on support base；
12）Controller control sliding stand returns to original position；
13）Repeat step 7）- step 12）, until closing switch or power supply.
2. a kind of a kind of application method of arrester detecting device, arrester detecting device includes support meanss, detection dress
Put, mobile device, controller and be respectively used to fix two geometrical clamps of high-voltage line and detection means detection line, wherein：
Support meanss include multiple fixed stations for fixing arrester, and multiple fixed stations are horizontally fixed on according to the distance of setting
On support base；Detection means is used to detect arrester that mobile device band motion detection device to be moved, and mobile device is arranged on branch
The top of support arrangement or the side of support meanss, detection means and mobile device are individually connected with controller respectively；Fixation is clamping
Determine on detection means；
The mobile device includes cross slid platform, sliding stand and column, and cross slid platform includes horizontal rail and vertical rail, level
Track is arranged on the surface of the support meanss by column, and sliding stand is arranged on vertical rail, the cross slid platform with
Controller is connected；
Characterized in that, comprising the following steps that：
1）Distance according to setting on support base sets at least 3 fixed stations；
2）One cross slid platform is set in the top of support base, the horizontal rail of cross slid platform is parallel with support base, cross slid platform
Another track be vertically arranged in one end of horizontal rail；
3）Sliding stand is set on vertical rail；
4）Detection means is fixed on sliding stand vertically；
5）Two geometrical clamps are fixed above detection means, one is used to fix high-voltage line, and another is filled for fixed test
The detection line put, the high-voltage line being fixed on geometrical clamp and detection line are arranged straight down；
6）The zinc oxide surge arresters successively on each fixed station, open the switch of whole device；
7）Controller control sliding stand moves to first top of arrester along horizontal rail；
8）Controller control sliding stand is moved downward to the position of setting along vertical rail, until the end of a thread and detection line of high-voltage line
Gauge head be against the upper end of arrester, arrester is boosted by high-voltage line, arrester is surveyed by detection means
Amount；
9）Controller control sliding stand is moved upward to the position of setting along vertical rail；
10）Controller control sliding stand advances to the top of next arrester along horizontal rail；
11）Repeat step 8）- step 10）, until completing the measurement to the arrester of the setting on support base；
12）Controller control sliding stand returns to original position；
13）Repeat step 7）- step 12）, until closing switch or power supply.
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| CN201510284555.8A CN104849600B (en) | 2015-05-28 | 2015-05-28 | A kind of arrester detecting device and its application method |
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| CN201510284555.8A CN104849600B (en) | 2015-05-28 | 2015-05-28 | A kind of arrester detecting device and its application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105548737A (en) * | 2015-11-30 | 2016-05-04 | 合保电气（芜湖）有限公司 | Aging test device of arrester |
| CN105510781B (en) * | 2015-12-18 | 2018-08-24 | 合保电气（芜湖）有限公司 | Insulator automatic detection device |
| CN105911395B (en) * | 2016-05-13 | 2018-10-30 | 江苏麟派电力科技股份有限公司 | A kind of lightning arrester monitoring device of electrification installation |
| CN106289377B (en) * | 2016-08-09 | 2018-05-29 | 国网山东省电力公司龙口市供电公司 | Arrester test device |
| CN109239505B (en) * | 2016-08-18 | 2020-12-22 | 安徽瑞邦生物科技有限公司 | Lightning arrester testing device |
| CN106443289B (en) * | 2016-08-26 | 2019-02-19 | 国网青海省电力公司海西供电公司 | Have both the arrester test device of arrester cleaning function |
| CN108776240B (en) * | 2018-06-22 | 2020-11-13 | 湖北泰和电气有限公司 | Detector for lightning arrester |
| CN110165645B (en) * | 2019-05-06 | 2024-07-26 | 上海优泰欧申智能科技有限公司 | Power surge protector and detection device thereof |
| CN110726878B (en) * | 2019-09-30 | 2021-08-31 | 上海宝沪质量检验检测有限公司 | Running state detection device and method for lightning arrester |
| CN112285470A (en) * | 2020-10-23 | 2021-01-29 | 广东电网有限责任公司清远供电局 | Lightning arrester on-line monitoring appearance |
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| CN103728471A (en) * | 2014-01-23 | 2014-04-16 | 张敬敏 | Arrester fast measuring device |
| CN103941121A (en) * | 2014-04-04 | 2014-07-23 | 盐城华盛变压器制造有限公司 | Arrester detector capable of simultaneously detecting two arresters |
| CN204028135U (en) * | 2014-08-18 | 2014-12-17 | 张志权 | The reassembling type verifying attachment of small-sized lightning arrester |
| CN104316800A (en) * | 2014-10-31 | 2015-01-28 | 国家电网公司 | Movable type lightning arrester test platform |
| CN204613335U (en) * | 2015-05-28 | 2015-09-02 | 国家电网公司 | A kind of arrester detecting device |
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| CN104849600A (en) | 2015-08-19 |
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