CN110702005A - Handcart switch cabinet - Google Patents
Handcart switch cabinet Download PDFInfo
- Publication number
- CN110702005A CN110702005A CN201910942089.6A CN201910942089A CN110702005A CN 110702005 A CN110702005 A CN 110702005A CN 201910942089 A CN201910942089 A CN 201910942089A CN 110702005 A CN110702005 A CN 110702005A
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- Prior art keywords
- switch cabinet
- contact
- green laser
- spherical reflector
- electronic endoscope
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- 238000001514 detection method Methods 0.000 claims abstract description 20
- 230000003068 static effect Effects 0.000 claims description 29
- 239000000725 suspension Substances 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 241000722921 Tulipa gesneriana Species 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 229940099259 vaseline Drugs 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Endoscopes (AREA)
Abstract
The invention relates to a handcart switch cabinet, which comprises a body and a detection assembly, wherein the detection assembly comprises a spherical reflector and a green laser, the green laser sends a laser beam parallel to the horizontal axis of the green laser to the spherical reflector, the laser beam is reflected by the spherical reflector to form a reflected beam which is injected into a moving contact, and the centering condition of the moving contact and a fixed contact is calculated through the included angle alpha between the reflected beam and the laser beam; the invention has the advantages that: the invention emits laser beams through a green laser in the detection component, the laser beams form a reflected light beam which is emitted into the movable contact through a spherical reflector arranged on the fixed contact, the centering condition of the movable contact and the fixed contact is calculated through an included angle alpha between the reflected light beam and the laser beams, and the centering condition of the movable contact and the fixed contact during operation is visually displayed on a display through a camera of the electronic endoscope, so that the centering condition of the movable contact and the fixed contact can be observed in a clearing way, and the centering error and the direction of the error can be clearly observed.
Description
Technical Field
The invention relates to a handcart switch cabinet.
Background
The handcart switch cabinet is widely applied in the power industry, almost is the first choice of all newly-built power transmission and distribution equipment below 35kV, has rich functions, flexible configuration and convenient field installation, brings great convenience to the design, type selection, debugging and installation of users and power departments, has a more obvious defect, is not easy to discover internal abnormity, particularly the problem caused by overheating of internal contacts, and is one of important causes of equipment faults of switch cabinets.
The handcart switch cabinet utilizes the spring type plum blossom contact or the straight line type contact to realize that the handcart part component is electrically connected with the fixed part component in the cabinet, the spring type plum blossom contact or the straight line type contact can realize better electric contact in most of the time, and have certain combination precision tolerance, generally the insertion depth or the centering error can not influence normal through-flow within 2-3 millimeters, however, because the technology of field installation and construction, the flatness of ground foundation and the processing precision of the switch cabinet, sometimes it is difficult to ensure that the combination error between the moving contact and the static contact of the switch cabinet is within the standard, after the handcart switch cabinet is put into operation, because the moving contact and the static contact are not correctly combined, the contact resistance is gradually increased, finally, the heating burning is caused, and even the contact box is subjected to insulation breakdown to cause the tripping accident. In recent years, with the increasing number of switch cabinet manufacturers and the requirement of construction period of field construction, the degree of combination of movable and fixed contacts of a plurality of switch cabinets during construction and installation is problematic, so that accidents of the switch cabinets are endless in recent years, and great challenges are brought to safe operation of a power grid.
Although the prior art provides technologies such as optical fiber temperature measurement and surface acoustic wave wireless temperature measurement, the contact failure of a handcart switch cabinet can be prevented or monitored in the later stage, the installation cost is high, power failure construction is needed, even if the power failure treatment is found to be abnormal, great economic loss and user reaction can be caused, and therefore in the civil engineering construction stage, a solution for the problem needs to be researched and developed, and the accident caused by poor contact of the switch cabinet contact can be fundamentally avoided.
However, due to the special structure of the handcart switch cabinet, the sight of the switch baffle and the valve baffle is shielded, even if a construction unit wants to detect and adjust the centering or the insertion depth of the contact during installation, the site is difficult to do, generally, an indirect method is adopted for rough measurement, contacts are separated and combined by using a method of coating vaseline, the insertion depth is estimated by observing the oil stain of the vaseline, and the centering degree is estimated by observing the deflection degree of the tulip contact, however, practice proves that the indirect method is used for testing the contact combination state, the error is extremely large, particularly, the tulip contact with a tight spring, even if the movable contact and the static contact are eccentric seriously, the tulip contact looks not at large deflection amplitude due to the dragging action of one side of the movable contact when the movable contact is pulled out, and the defects of the existing scheme are; on the other hand, in recent years, the switch cabinet valve baffle is clamped in an opening and closing mode, so that the valve cannot be closed tightly, the accident that an overhaul person opens the switch by mistake and gets an electric shock happens many times, how to find whether the opening and closing of the valve baffle are smooth and free of clamping in time during installation and debugging, and one of important factors for guaranteeing the safe operation of switch cabinet equipment.
Disclosure of Invention
The invention aims to provide a handcart switch cabinet, which can intuitively master the centering condition of a moving contact and a static contact and realize the centering detection of the moving contact and the static contact.
In order to solve the technical problems, the invention is realized by the following technical scheme: the handcart switch cabinet comprises a body, a detection assembly and an electronic endoscope camera, wherein the body comprises a moving contact and a fixed contact, the moving contact comprises a conducting rod, the detection component comprises a spherical reflector and a green laser, the green laser is arranged on the conducting rod, the horizontal axis of the green laser is superposed with the horizontal axis of the conducting rod, the spherical reflector is arranged on the static contact, the horizontal axis of the spherical reflector is superposed with the horizontal axis of the static contact, the green laser emits laser beams parallel to the horizontal axis of the green laser to the spherical reflector, the laser beams are reflected by the spherical reflector to form a reflected light beam which is emitted into the movable contact, the centering condition of the moving contact and the fixed contact is calculated through an included angle alpha of a reflected light beam and a laser beam, the electronic endoscope camera is suspended in the body, and a display or a mobile phone is connected to the electronic endoscope camera.
Preferably, the centering condition of the movable contact and the fixed contact is calculated according to the following formula, wherein H is sin2 α/R, H is the distance between the laser beam and the central axis of the spherical mirror, and R is the spherical radius of the spherical mirror.
Preferably, the conducting rod is provided with a fixing hole for fixing the green laser, and the green laser is detachably mounted in the fixing hole.
Preferably, a fixing sleeve is further arranged outside the green laser, and the fixing sleeve is installed in the fixing hole in a clearance fit mode.
Preferably, the spherical reflector is provided with a non-setting adhesive, and the spherical reflector is fixedly connected to the static contact through the non-setting adhesive.
Preferably, the spherical mirror is a convex mirror.
Preferably, the display and the electronic endoscope camera are transmitted through a wireless network or a wired network.
Preferably, the electronic endoscope camera is further connected with a suspension rope, the electronic endoscope camera is suspended in the body through the suspension rope, and the suspension rope is further provided with a battery box for supplying power to the electronic endoscope camera.
Preferably, the body still includes the action bars, be equipped with the crank on the action bars, be equipped with the torsion meter on the crank.
Preferably, the crank handle comprises a section of connecting rod connected with the operating rod and a section of handle convenient for an operator to hold, the torsion meter is arranged in the middle of the connecting rod, and the handle is arranged on the connecting rod.
In conclusion, the invention has the advantages that: the invention emits laser beam through the green laser in the detection component, the laser beam is formed into a reflected beam which is shot into the moving contact through the spherical reflector arranged on the static contact, the centering condition of the moving contact and the static contact is calculated through the included angle alpha between the reflected beam and the laser beam, and the centering condition of the moving contact and the static contact during operation is visually displayed on a display or a mobile phone through the camera of the electronic endoscope, so that the centering condition of the moving contact and the static contact can be observed in a cleanable way, the centering error and the direction of the error can be clearly observed, secondly, in the test operation process, the display or the mobile phone can receive the video shot by the camera of the electronic endoscope, the running condition of components such as a valve baffle plate, a baffle plate connecting rod and the like can be observed, finally, the centering detection of the moving contact and the static contact is realized through the laser beam, and the, the invention realizes the detection of the switch cabinet under the condition of partial electrification, the existing centering technology can only be used for the motor rotating shaft or the occasion without high voltage, and because the condition that the operation of the switch cabinet is rarely provided with the condition that the bus and the outgoing line are simultaneously stopped is provided, the invention ensures that the centering detection of the switch cabinet contact can be executed under the condition that the bus is not required to be powered off, greatly improves the convenience of eliminating the fault of the switch cabinet equipment, can avoid the technical scheme of a large number of contact burning accidents caused by low debugging precision of the switch cabinet equipment, and effectively improves the operation reliability of a medium-low voltage distribution network.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural view of an electronic endoscope camera and a crank handle in a handcart switch cabinet;
FIG. 2 is a schematic diagram of the principle of reflection of the laser centering light path of the detection assembly of the present invention;
FIG. 3 is a schematic structural view of a detecting unit according to the present invention;
FIG. 4 is a schematic structural view of the camera head of the electronic endoscope of the present invention;
fig. 5 is a schematic structural view of the swing handle of the present invention.
Reference numerals:
the electronic endoscope comprises a body 1, a display 11, an operating rod 12, a movable contact 2, a conductive rod 21, a fixing hole 22, a fixed contact 3, a detection assembly 4, a spherical reflector 41, a green laser 42, a fixing sleeve 43, a self-adhesive sticker 44, a laser beam 45, a reflected light beam 46, an electronic endoscope camera 5, a suspension rope 51, a battery box 52, a handlebar 6, a connecting rod 61, a handle 62, a sleeve 63 and a torsion watch 7.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, the handcart switch cabinet comprises a body 1, the body 1 comprises a moving contact 2 and a fixed contact 3, the moving contact 2 comprises a conductive rod 21, the handcart switch cabinet further comprises a detection component 4 and an electronic endoscope camera 5, considering that the handcart switch has a large inner space and the endoscope lens is not fixed easily, the electronic endoscope camera 5 is a 360-degree panoramic camera which can be controlled by an external rocker so as to enlarge the internal observation range, the detection component 4 comprises a spherical reflector 41 and a green laser 42, the spherical reflector 41 and the green laser 42 are six and are respectively arranged inside six moving contacts 2 and fixed contacts 3 of three phases in the body 1, the green laser 42 is arranged on the conductive rod 21, and the horizontal axis of the green laser 42 coincides with the horizontal axis of the conductive rod 21, the spherical reflector 41 is arranged on the fixed contact 3, the horizontal axis of the spherical reflector 41 is overlapped with the horizontal axis of the fixed contact 3, the green laser 42 emits a laser beam 45 parallel to the horizontal axis of the green laser 42 to the spherical reflector 41, the laser beam 45 is reflected by the spherical reflector 41 to form a reflected beam 46 which enters the movable contact 2, the centering condition of the movable contact 2 and the fixed contact 3 is calculated through an included angle alpha between the reflected beam 46 and the laser beam 45, the electronic endoscope camera 5 is suspended in the body 1, the electronic endoscope camera 5 is connected with the display 11, and the display 11 can be placed on the hand of an operator according to actual operation requirements.
The invention emits laser beam 45 through green laser 42 in the detecting component 4, the laser beam 45 is formed by spherical reflector 41 installed on the static contact 3 and is shot into the reflected light beam 46 of the movable contact 2, the centering condition of the movable contact 2 and the static contact 3 is calculated through the included angle alpha between the reflected light beam 46 and the laser beam 45, and the centering condition of the movable contact 2 and the static contact 3 during operation is visually displayed on the display 11 through the electronic endoscope camera 5, so that the centering condition of the movable contact 3 and the static contact 3 can be observed clearly, the centering error and the direction of the error can be observed clearly, if the movable contact and the static contact are on a straight line, the reflected light beam of the spherical reflector of the laser beam is shot to the laser beam and is certainly parallel to the laser beam, if not on a straight line, the reflected light beam can generate obvious deflection, and whether the movable contact and the static contact are in a straight line, secondly, in the test operation process, the display 11 can receive the video shot by the camera 5 of the electronic endoscope, can observe the operation conditions of the components such as the valve baffle plate, the baffle plate connecting rod and the like, and finally realizes the centering detection of the moving contact 2 and the static contact 3 through the laser beam 45, because the laser beam 45 emitted by the green laser 42 has good insulating capability, the detection under the partial electrified condition of the switch cabinet is realized, the existing centering technology can only be used for the motor rotating shaft or the occasion without high voltage, because the condition that the bus and the outgoing line are simultaneously stopped is rarely met when the switch cabinet is in operation, the invention ensures that the switch cabinet contact centering detection can be executed under the condition that the bus does not need to be powered off, greatly improves the convenience of eliminating the fault of the switch cabinet equipment, can avoid the technical scheme of a large number of contact burning accidents caused by low debugging precision of the switch cabinet equipment, and effectively improves the operation reliability of the medium-low voltage distribution network.
The centering condition of the moving contact 2 and the static contact 3 is calculated according to the following formula, H is sin2 α/R, wherein H is the distance between the laser beam 45 and the central axis of the spherical mirror, and R is the spherical radius of the spherical reflector 41, so that the vertical distance between the neutral line of the moving contact 2 and the neutral line of the static contact 3 can be calculated by observing the angle between the reflected beam 46 and the incident laser beam 45, thereby performing the centering detection.
Be equipped with the fixed orifices 22 of fixed green laser instrument 42 on the conducting rod 21, green laser instrument 42 detachable installs in fixed orifices 22, can realize that green laser instrument 42's quick installation is fixed, and sets green laser instrument 42 and fixed orifices 22 to the detachable mounting means, can select the green laser instrument 42 of different models according to the conducting rod 21 of different models, green laser instrument 42 still is equipped with fixed cover 43 outward, fixed cover 43 interference fit installs in fixed orifices 22, can improve the fixed quality of green laser instrument 42 on conducting rod 21, be equipped with non-setting adhesive 44 on spherical reflector 41, spherical reflector 41 passes through non-setting adhesive 44 fixed connection on static contact 3, can improve spherical reflector 41's fixed quality, spherical reflector 41 is the convex mirror, can improve laser beam 45's reflection effect.
The display 11 and the electronic endoscope camera 5 are transmitted through a wireless network or a wired network, so that the video data can be rapidly transmitted, different application occasions can be adapted, the electronic endoscope camera 5 is further connected with a suspension rope 51, the electronic endoscope camera 5 is suspended in the body 1 through the suspension rope 51, a battery box 52 for supplying power to the electronic endoscope camera 5 is further arranged on the suspension rope 51, a power supply battery is arranged in the battery box, the fixing quality of the electronic endoscope camera 5 can be improved, the electronic endoscope camera 5 is convenient to install and detach, and the battery box 52 can stably supply power to the electronic endoscope camera 5, so that the normal work of the electronic endoscope camera 5 is ensured.
The problems of unsmooth and unsmooth operation process, which are caused by deformation of mechanical structures of parts such as guide rails, wheels, valve connecting rods and the like, improper installation or lack of lubrication and the like, are also common problems of handcart switch cabinets, particularly, a middle-low voltage cabinet below 10KV, and the problems are caused by large production and sales volume and low technical threshold of manufacturers, and a plurality of products with low machining precision are also put on the market, so that hidden dangers are brought to operation and operation of equipment, and the detection of the moment of the crank is an effective method, and the problems possibly existing between handcart or moving parts of the body 1 can be effectively detected through observation of moment reading in the operation process by arranging the moment display 11 on the handle, wherein the body 1 further comprises an operating rod 12, the operating rod 12 is provided with the crank 6, the crank 6 is provided with a torsion meter 7, the handcart switch cabinet is convenient to operate, the moment reading of the hand crank 6 can be obtained through the torsion meter 7 during operation, whether the resistance received by the handcart in the operation process is even or not can be known, the mechanism is jammed or not, the installation and construction quality of the handcart switch cabinet is further improved, the hand crank 6 comprises a section of connecting rod 61 connected with the operating rod 12 and a section of handle 62 convenient for the operator to hold, the torsion meter 7 is arranged in the middle of the connecting rod 61, the handle 62 is arranged on the connecting rod 61, the connecting rod 61 is arranged, the hand crank 6 can be quickly connected with the operating rod 12, different connecting rods 61 can be rotated according to handcart switch cabinets of different types, in order to improve the connection strength of the connecting rod 61 and the operating rod 12, the sleeve 63 is arranged on the connecting rod 61, the handle 62 is arranged, the hand crank 6 can be conveniently held by the operator, the torsion meter 7 is arranged in the middle of the connecting rod 61, the numerical value of torsion table 7 is convenient for operator to observe, and the operation effect is good.
Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.
Claims (10)
1. Handcart cubical switchboard, including the body, the body includes moving contact and static contact, the moving contact includes conducting rod, its characterized in that: the detection assembly comprises a spherical reflector and a green laser, the green laser is arranged on the conducting rod, the horizontal axis of the green laser coincides with the horizontal axis of the conducting rod, the spherical reflector is arranged on the static contact, the horizontal axis of the spherical reflector coincides with the horizontal axis of the static contact, the green laser sends a laser beam parallel to the horizontal axis of the green laser to the spherical reflector, the laser beam is reflected by the spherical reflector to form a reflected beam which is shot into the moving contact, the centering condition of the moving contact and the static contact is calculated through the included angle alpha between the reflected beam and the laser beam, the electronic endoscope camera is hung in the electronic endoscope camera, and a display or a mobile phone is connected to the electronic endoscope camera.
2. The handcart switch cabinet of claim 1, wherein: the centering condition of the moving contact and the static contact is calculated according to the following formula, wherein H is sin2 alpha/R, H is the distance between the laser beam and the central axis of the spherical mirror, and R is the spherical radius of the spherical reflector.
3. The handcart switch cabinet of claim 1, wherein: the green laser fixing device is characterized in that a fixing hole for fixing the green laser is formed in the conducting rod, and the green laser is detachably installed in the fixing hole.
4. The handcart switch cabinet of claim 3, wherein: the green laser is also provided with a fixed sleeve outside, and the fixed sleeve is arranged in the fixed hole in an interference fit manner.
5. The handcart switch cabinet of claim 1, wherein: the spherical reflector is provided with a non-setting adhesive and is fixedly connected to the static contact through the non-setting adhesive.
6. The handcart switch cabinet of claim 5, wherein: the spherical reflector is a convex mirror.
7. The handcart switch cabinet of claim 1, wherein: the display and the electronic endoscope camera are transmitted through a wireless network or a wired network.
8. The handcart switch cabinet of claim 7, wherein: the electronic endoscope camera is characterized in that a suspension rope is further connected to the electronic endoscope camera, the electronic endoscope camera is suspended in the body through the suspension rope, and a battery box for supplying power to the electronic endoscope camera is further arranged on the suspension rope.
9. The handcart switch cabinet of claim 1, wherein: the body still includes the action bars, be equipped with the crank on the action bars, be equipped with the torsion meter on the crank.
10. The handcart switch cabinet of claim 9, wherein: the crank handle comprises a section of connecting rod connected with the operating rod and a section of handle convenient for an operator to hold, the torsion meter is arranged in the middle of the connecting rod, and the handle is arranged on the connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910942089.6A CN110702005B (en) | 2019-09-30 | 2019-09-30 | Handcart switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910942089.6A CN110702005B (en) | 2019-09-30 | 2019-09-30 | Handcart switch cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110702005A true CN110702005A (en) | 2020-01-17 |
| CN110702005B CN110702005B (en) | 2021-07-20 |
Family
ID=69197357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910942089.6A Active CN110702005B (en) | 2019-09-30 | 2019-09-30 | Handcart switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110702005B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113258491A (en) * | 2021-07-15 | 2021-08-13 | 四川电器集团中低压智能配电有限公司 | Insulation structure of sufficient heat dissipation type current sensor |
| CN113281643A (en) * | 2021-05-12 | 2021-08-20 | 陕西西高开关有限责任公司 | Intelligent detection and early warning system for engagement fault of draw-out type circuit breaker contact |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281643A (en) * | 2021-05-12 | 2021-08-20 | 陕西西高开关有限责任公司 | Intelligent detection and early warning system for engagement fault of draw-out type circuit breaker contact |
| CN113258491A (en) * | 2021-07-15 | 2021-08-13 | 四川电器集团中低压智能配电有限公司 | Insulation structure of sufficient heat dissipation type current sensor |
| CN113258491B (en) * | 2021-07-15 | 2021-09-21 | 四川电器集团中低压智能配电有限公司 | Insulation structure of sufficient heat dissipation type current sensor |
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| Publication number | Publication date |
|---|---|
| CN110702005B (en) | 2021-07-20 |
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