CN112285488A - Distribution line fault diagnosis device and diagnosis method - Google Patents
Distribution line fault diagnosis device and diagnosis method Download PDFInfo
- Publication number
- CN112285488A CN112285488A CN202011153793.2A CN202011153793A CN112285488A CN 112285488 A CN112285488 A CN 112285488A CN 202011153793 A CN202011153793 A CN 202011153793A CN 112285488 A CN112285488 A CN 112285488A
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- box cover
- distribution line
- movable frame
- fixedly connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003745 diagnosis Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
Abstract
The invention discloses a distribution line fault diagnosis device and a diagnosis method, wherein a through hole formed by a movable frame and a fixed frame is used for fixing a cable to be detected, the movable frame slides upwards through a guide rail to a first clamping seat to be contacted with the fixed frame, the cable to be detected is fixed, after detection is finished, a left cover plate and a right cover plate respectively rotate inwards through a left rotating shaft and a right rotating shaft until the left cover plate is clamped into a second clamping seat, the left cover plate and the right cover plate form a closed space with a box body, a fixed rod rotates to the right upper part around the first rotating shaft, a handle can be directly held for carrying, the second rotating shaft can also be rotated, the second rotating shaft drives the rotating wheel to rotate downwards, the telescopic rod is pulled out from the fixed rod, and the distribution line fault diagnosis device can be placed on the ground for dragging, is convenient to carry and improves the practicability.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a distribution line fault diagnosis device and a distribution line fault diagnosis method.
Background
Distribution lines in case the normal transport that will influence the electric energy breaks down, consequently carry out fault monitoring, fault location to distribution lines is the important means that improves power supply reliability, and distribution lines fault location device all need install on distributing power overhead line, consequently has higher to the requirement of the reliability of device and simple to operate nature, and most distribution lines fault location device do not have corresponding storage assembly at present, leads to carrying inconveniently.
Disclosure of Invention
The invention aims to provide a distribution line fault diagnosis device and a distribution line fault diagnosis method, and aims to solve the technical problem that most distribution line fault positioning devices in the prior art are not provided with corresponding storage assemblies, so that the distribution line fault positioning devices are inconvenient to carry.
In order to achieve the above object, the invention provides a distribution line fault diagnosis device, which comprises a box body, a fixed seat, a movable frame, a guide rail, a mutual inductor and a receiving assembly, wherein the fixed seat is fixedly connected with the box body and positioned in the box body, the guide rail is fixedly connected with the fixed seat and positioned in the fixed seat, the movable frame is movably connected with the guide rail and positioned above the fixed seat, the mutual inductor is fixedly connected with the movable frame and positioned below the movable frame, the receiving assembly comprises a left rotating shaft, a right rotating shaft, a left box cover, a right box cover and a handle, the left rotating shaft is fixedly connected with the box body and positioned at the left side of the box body, the right rotating shaft is fixedly connected with the box body and positioned at the right side of the box body, the left box cover is fixedly connected with the left rotating shaft and positioned above the left rotating shaft, the right box cover is fixedly connected with the right rotating shaft and is positioned above the right rotating shaft, and the lifting handle is movably connected with the right box cover and is positioned above the box cover.
The distribution line fault diagnosis device further comprises a first clamping seat, wherein the first clamping seat is fixedly connected with the movable frame and is positioned at the top end of the movable frame.
The storage assembly comprises a second clamping seat, and the second clamping seat is fixedly connected with the left box cover and is positioned above the left box cover.
The handle comprises a first rotating shaft and a fixed rod, the first rotating shaft is movably connected with the right box cover and is positioned above the right box cover, and the fixed rod is fixedly connected with the first rotating shaft and is positioned above the first rotating shaft.
The handle further comprises a telescopic rod and a handle, the telescopic rod is movably connected with the fixed rod and is located inside the fixed rod, and the handle is fixedly connected with the telescopic rod and is located above the telescopic rod.
The invention also provides a distribution line fault diagnosis method adopting the distribution line fault diagnosis device, which comprises the following steps:
pushing the handle downwards to the lowest end, and rotating the handle to be tightly attached to the right box cover;
slightly pressing the right box cover, popping the right box cover from the second clamping seat, and opening the right box cover and the left box cover outwards;
sliding the movable frame downwards, and sleeving the cable to be detected between the movable frame and the fixed seat;
and sliding the movable frame upwards until the fixed seat is clamped into the first clamping seat, and performing fault detection by using the mutual inductor.
The invention has the beneficial effects that: the movable frame is used for fixing the cable to be detected through a through hole formed by the movable frame and the fixed frame, the movable frame slides upwards through the guide rail until the first clamping seat is contacted with the fixed frame, fixing the cable to be detected, rotating the left cover plate and the right cover plate respectively in the axial direction through the left rotating shaft and the right rotating shaft after the detection is finished until the left cover plate is clamped into the second clamping seat, the left cover plate, the right cover plate and the box body form a closed space, the fixed rod rotates to the position right above the first rotating shaft around the first rotating shaft, the handle can be directly held for carrying, and the second rotating shaft can also be rotated, the second rotating shaft drives the rotating wheel to rotate downwards to pull out the telescopic rod from the fixed rod, the distribution line fault diagnosis device can be placed on the ground to be dragged, so that the distribution line fault diagnosis device is convenient to carry and improves the practicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an open state of a distribution line fault diagnosis device according to the present invention.
Fig. 2 is a schematic structural diagram of a closed state of the distribution line fault diagnosis device of the invention.
Fig. 3 is a flow chart illustrating the steps of a method for diagnosing faults in a distribution line according to the present invention.
1-box body, 2-fixed seat, 3-movable frame, 4-guide rail, 5-mutual inductor, 6-containing component, 61-left rotating shaft, 62-right rotating shaft, 63-left box cover, 64-right box cover, 65-handle, 651-first rotating shaft, 652-fixed rod, 653-telescopic rod, 654-handle, 66-second clamping seat, 7-first clamping seat, 8-second rotating shaft, 9-rotating wheel, 10-rotating handle and 11-sponge layer.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a distribution line fault diagnosis device comprises a box body 1, a fixed seat 2, a movable frame 3, a guide rail 4, a mutual inductor 5 and a containing assembly 6, wherein the fixed seat 2 is fixedly connected with the box body 1 and is positioned in the box body 1, the guide rail 4 is fixedly connected with the fixed seat 2 and is positioned in the fixed seat 2, the movable frame 3 is movably connected with the guide rail 4 and is positioned above the fixed seat 2, the mutual inductor 5 is fixedly connected with the movable frame 3 and is positioned below the movable frame 3, the containing assembly 6 comprises a left rotating shaft 61, a right rotating shaft 62, a left box cover 63, a right box cover 64 and a handle 65, the left rotating shaft 61 is fixedly connected with the box body 1 and is positioned on the left side of the box body 1, the right rotating shaft 62 is fixedly connected with the box body 1 and is positioned on the right side of the box body 1, the left box cover 63 is fixedly connected with the left rotating shaft 61, and is located above the left rotating shaft 61, the right box cover 64 is fixedly connected with the right rotating shaft 62 and is located above the right rotating shaft 62, and the handle 65 is movably connected with the right box cover 64 and is located above the box cover.
In this embodiment, a fault monitoring module for monitoring the working condition of a distribution line is disposed inside the fixed base 2, the transformers 5 are two through transformers 5, one of the transformers 5 is a power taking ring, the other current transformer 5 is a measuring ring, a winding of the power taking ring is connected to a power input port of the fault monitoring module, a winding of the measuring ring is connected to a monitoring signal input port of the fault monitoring module, a cable to be detected is fixed above the fixed base 2 for detection, a through hole formed by the movable frame 3 and the fixed frame is used for fixing the cable to be detected, the movable frame 3 slides upwards through the guide rail 4 until the first clamping seat 7 contacts the fixed frame, the cable to be detected is fixed, after detection is completed, the left cover plate and the right cover plate rotate inwards through the left rotating shaft 61 and the right rotating shaft 62 respectively, until the left cover plate is clamped into the second clamping seat 66, the left cover plate and the right cover plate form a closed space with the box body 1, the fixed rod 652 is wound on the first rotating shaft 651 to rotate right above the first rotating shaft, the handle 654 can be directly held for carrying, and can also rotate the second rotating shaft 8, the second rotating shaft 8 drives the rotating wheel 9 to rotate downwards, the telescopic rod 653 is pulled out from the fixed rod 652, and the distribution line fault diagnosis device can be placed on the ground for dragging, so that the carrying is convenient, and the practicability is improved.
Further, the distribution line fault diagnosis device further comprises a first card holder 7, and the first card holder 7 is fixedly connected with the movable frame 3 and is located at the top end of the movable frame 3.
In this embodiment, a clamping plate is disposed at the top end of the fixed frame, and the movable frame 3 is clamped into the first clamping seat 7 through the clamping plate which slides upwards through the guide rail 4, so as to fix the cable to be detected.
Further, the receiving assembly 6 includes a second clamping seat 66, and the second clamping seat 66 is fixedly connected to the left case cover 63 and is located above the left case cover 63.
In this embodiment, a clamping plate is disposed at the top end of the right box cover 64, the left cover plate and the right cover plate are respectively rotated inwards through the left rotating shaft 61 and the right rotating shaft 62 until the clamping plate is clamped into the second clamping seat 66, and the distribution line fault diagnosis device forms a closed space and is convenient to carry.
Further, the handle 65 includes a first rotating shaft 651 and a fixing rod 652, the first rotating shaft 651 is movably connected to the right case cover 64 and is located above the right case cover 64, and the fixing rod 652 is fixedly connected to the first rotating shaft 651 and is located above the first rotating shaft 651.
In this embodiment, the handle 65 rotates the fixing rod 652 to be attached to the right box cover 64 through the first rotating shaft, and is folded for convenient carrying.
Further, the handle 65 further comprises a telescopic rod 653 and a handle 654, the telescopic rod 653 is movably connected to the fixing rod 652 and is located inside the fixing rod 652, and the handle 654 is fixedly connected to the telescopic rod 653 and is located above the telescopic rod 653.
In this embodiment, the fixed lever 652 is rotated about the first rotating shaft 651 to a position directly above the handle 654, and the second rotating shaft 8 may be rotated, so that the second rotating shaft 8 rotates the rotating wheel 9 downward, and the telescopic rod 653 is pulled out from the fixed lever 652, thereby placing and dragging the distribution line fault diagnosis apparatus on the ground.
Further, distribution lines fault diagnosis device still includes second pivot 8, runner 9 and rotation handle 10, second pivot 8 with 1 swing joint of box, and be located the bottom of box 1, runner 9 with 1 fixed connection of third box, and be located the bottom of box 1, rotation handle 10 with 8 fixed connection of second pivot, and be located the side of second pivot 8.
In this embodiment, two grooves are formed in the bottom of the box 1, the rotating handle 10 and the rotating wheel 9 are respectively located inside the corresponding grooves, the second rotating shaft 8 drives the rotating wheel 9 to rotate downward, the telescopic rod 653 is pulled out from the fixing rod 652, and the distribution line fault diagnosis device can be placed on the ground for dragging, so that the distribution line fault diagnosis device is convenient to carry.
Further, distribution lines fault diagnosis device still includes sponge layer 11, sponge layer 11 respectively with box 1 with fixing base 2 fixed connection, and be located box 1 with between the fixing base 2.
In this embodiment, when the distribution line fault diagnosis device is dragged or accidentally bumped, the buffering effect generated by the sponge layer 11 reduces the collision between the box body 1 and the fixed seat 2, and protects the parts.
Referring to fig. 3, the present invention further provides a distribution line fault diagnosis method using the distribution line fault diagnosis apparatus, including the following steps:
s1, the handle 654 is pushed downwards to the lowest end, and the handle 65 is rotated to be tightly attached to the right box cover 64;
s2, slightly pressing the right box cover 64, ejecting the right box cover 64 from the second clamping seat 66, and opening the right box cover 64 and the left box cover 63 outwards;
s3, sliding the movable frame 3 downwards, and sleeving the cable to be detected between the movable frame 3 and the fixed seat 2;
and S4, sliding the movable frame 3 upwards until the fixed seat 2 is clamped into the first clamping seat 7, and performing fault detection by using the mutual inductor 5.
In this embodiment, the through hole formed by the movable frame 3 and the fixed frame is used for fixing a cable to be detected, the movable frame 3 slides upwards through the guide rail 4 until the first card holder 7 contacts with the fixed frame, the cable to be detected is fixed, after the detection is completed, the left cover plate and the right cover plate rotate inwards through the left rotating shaft 61 and the right rotating shaft 62 respectively until the left cover plate is clamped into the second card holder 66, the left cover plate and the right cover plate form a closed space with the box body 1, the fixed rod 652 rotates around the first rotating shaft 651 to be right above, the handle 654 can be directly held for carrying, the second rotating shaft 8 can also be rotated, the second rotating shaft 8 drives the rotating wheel 9 to rotate downwards, the telescopic rod 653 is pulled out from the fixed rod 652, and the distribution line fault diagnosis device can be placed on the ground for dragging, is convenient to carry and improves the practicability.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A distribution line fault diagnosis device is characterized by comprising a box body, a fixed seat, a movable frame, a guide rail, a mutual inductor and a containing assembly, wherein the fixed seat is fixedly connected with the box body and is positioned in the box body, the guide rail is fixedly connected with the fixed seat and is positioned in the fixed seat, the movable frame is movably connected with the guide rail and is positioned above the fixed seat, the mutual inductor is fixedly connected with the movable frame and is positioned below the movable frame, the containing assembly comprises a left rotating shaft, a right rotating shaft, a left box cover, a right box cover and a handle, the left rotating shaft is fixedly connected with the box body and is positioned on the left side of the box body, the right rotating shaft is fixedly connected with the box body and is positioned on the right side of the box body, the left box cover is fixedly connected with the left rotating shaft and is positioned above the left rotating shaft, the right box cover is fixedly connected with the right rotating shaft and is positioned above the right rotating shaft, and the lifting handle is movably connected with the right box cover and is positioned above the box cover.
2. The distribution line fault diagnosis device and method according to claim 1, wherein the distribution line fault diagnosis device further comprises a first card holder, and the first card holder is fixedly connected with the movable frame and is located at the top end of the movable frame.
3. The distribution line fault diagnosis device of claim 2, wherein the receiving assembly comprises a second clamping seat, and the second clamping seat is fixedly connected with the left box cover and is positioned above the left box cover.
4. The distribution line fault diagnosis device of claim 3, wherein the handle comprises a first rotating shaft and a fixed rod, the first rotating shaft is movably connected with the right box cover and is positioned above the right box cover, and the fixed rod is fixedly connected with the first rotating shaft and is positioned above the first rotating shaft.
5. The distribution line fault diagnosis device of claim 4, wherein the handle further comprises a retractable bar and a handle, the retractable bar is movably connected to the fixed bar and is located inside the fixed bar, and the handle is fixedly connected to the retractable bar and is located above the retractable bar.
6. The distribution line fault diagnosis method using the distribution line fault diagnosis apparatus according to claim 5, characterized by comprising the steps of:
pushing the handle downwards to the lowest end, and rotating the handle to be tightly attached to the right box cover;
slightly pressing the right box cover, popping the right box cover from the second clamping seat, and opening the right box cover and the left box cover outwards;
sliding the movable frame downwards, and sleeving the cable to be detected between the movable frame and the fixed seat;
and sliding the movable frame upwards until the fixed seat is clamped into the first clamping seat, and performing fault detection by using the mutual inductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011153793.2A CN112285488B (en) | 2020-10-26 | 2020-10-26 | Distribution line fault diagnosis device and diagnosis method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011153793.2A CN112285488B (en) | 2020-10-26 | 2020-10-26 | Distribution line fault diagnosis device and diagnosis method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112285488A true CN112285488A (en) | 2021-01-29 |
| CN112285488B CN112285488B (en) | 2023-12-26 |
Family
ID=74423358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011153793.2A Active CN112285488B (en) | 2020-10-26 | 2020-10-26 | Distribution line fault diagnosis device and diagnosis method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112285488B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100884767B1 (en) * | 2008-03-10 | 2009-02-23 | 오성기전주식회사 | Three-phase voltage/current transformer for metering power supply |
| CN201281891Y (en) * | 2008-11-06 | 2009-07-29 | 齐明海 | High voltage transmission variation electricity line intelligent alarm |
| CN104091681A (en) * | 2014-06-24 | 2014-10-08 | 海盐凌云威电子有限公司 | Directly-pushed open-core transformer locking device |
| CN207764367U (en) * | 2018-02-08 | 2018-08-24 | 珠海浩阳科技有限公司 | A kind of mutual inductor comprehensive tester |
| CN110491718A (en) * | 2019-09-10 | 2019-11-22 | 湖北金顿电气有限公司 | A kind of 10KV outdoor permanent magnetic breaker controller |
| CN111366886A (en) * | 2020-04-08 | 2020-07-03 | 江苏莱尔曼电气科技有限公司 | Harmonic elimination device for voltage transformer |
| CN111596250A (en) * | 2020-06-29 | 2020-08-28 | 国网山东省电力公司东营供电公司 | Portable zero sequence current transformer live-line testing device |
-
2020
- 2020-10-26 CN CN202011153793.2A patent/CN112285488B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100884767B1 (en) * | 2008-03-10 | 2009-02-23 | 오성기전주식회사 | Three-phase voltage/current transformer for metering power supply |
| CN201281891Y (en) * | 2008-11-06 | 2009-07-29 | 齐明海 | High voltage transmission variation electricity line intelligent alarm |
| CN104091681A (en) * | 2014-06-24 | 2014-10-08 | 海盐凌云威电子有限公司 | Directly-pushed open-core transformer locking device |
| CN207764367U (en) * | 2018-02-08 | 2018-08-24 | 珠海浩阳科技有限公司 | A kind of mutual inductor comprehensive tester |
| CN110491718A (en) * | 2019-09-10 | 2019-11-22 | 湖北金顿电气有限公司 | A kind of 10KV outdoor permanent magnetic breaker controller |
| CN111366886A (en) * | 2020-04-08 | 2020-07-03 | 江苏莱尔曼电气科技有限公司 | Harmonic elimination device for voltage transformer |
| CN111596250A (en) * | 2020-06-29 | 2020-08-28 | 国网山东省电力公司东营供电公司 | Portable zero sequence current transformer live-line testing device |
Non-Patent Citations (1)
| Title |
|---|
| 莫芳华 等: "互感器现场校验测试线集成线箱的研发", 电工技术, no. 7, pages 125 - 127 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112285488B (en) | 2023-12-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111312513B (en) | Full-automatic sleeve penetrating, winding and encapsulation integrated machine | |
| CN107826507B (en) | Handheld cable fault tester | |
| CN112285488A (en) | Distribution line fault diagnosis device and diagnosis method | |
| CN111077351A (en) | On-line detection and diagnosis device for power system | |
| CN213303758U (en) | Mica tape winding device for cable conductor | |
| CN117761599A (en) | Hall current sensor fault detection device | |
| CN209487906U (en) | A kind of welder for cable core docking | |
| CN215894694U (en) | Anti-creeping protection testing tool based on relay protection equipment | |
| CN113023504B (en) | Draw-bar box of multifunctional relay protection tester | |
| CN207158755U (en) | A kind of spinning cover opening device | |
| CN208948555U (en) | A kind of ground wire winding device | |
| CN219842489U (en) | Explosion-proof equipotential tester | |
| CN219369878U (en) | Direct current resistance testing device | |
| CN219031331U (en) | Oil guide pipe fixing and storing device for petroleum processing | |
| CN218213077U (en) | Rail train is with electric tank fault detection device | |
| CN212727365U (en) | Earplug type earphone with earphone cord winding structure | |
| CN210090627U (en) | Test equipment | |
| CN215987439U (en) | Charging wire device and vending machine | |
| CN213658833U (en) | Lightning protection detection device convenient to receive line | |
| CN217521300U (en) | Locking insulating health detector that moves | |
| CN221463250U (en) | Pipe fitting support with protective structure | |
| CN212675065U (en) | Electrical equipment fault detector | |
| CN221078804U (en) | Electrical characteristic test fixture for roller potentiometer | |
| CN220844703U (en) | Butt clamp structure of material roll | |
| CN214958279U (en) | Novel chassis vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |