CN108155501B - Rod type arc suppression device for lap joint operation of 10KV outgoing cable and overhead line - Google Patents
Rod type arc suppression device for lap joint operation of 10KV outgoing cable and overhead line Download PDFInfo
- Publication number
- CN108155501B CN108155501B CN201810150698.3A CN201810150698A CN108155501B CN 108155501 B CN108155501 B CN 108155501B CN 201810150698 A CN201810150698 A CN 201810150698A CN 108155501 B CN108155501 B CN 108155501B
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- rod
- cable
- insulating
- lap joint
- line
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- 230000001629 suppression Effects 0.000 title claims abstract description 28
- 238000013016 damping Methods 0.000 claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 238000009413 insulation Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000016507 interphase Effects 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000013440 design planning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/6608—Structural association with built-in electrical component with built-in single component
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
- H01R31/065—Intermediate parts for linking two coupling parts, e.g. adapter with built-in electric apparatus
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The rod type arc suppression device for the lap joint operation of the 10KV outgoing cable and the overhead line comprises an insulating operation rod, wherein a damping pressure spring is sleeved at the working section of the upper part of the insulating operation rod, the damping pressure spring is connected with a clamp spring type chuck, and the clamp spring type chuck is fixedly clamped with the 10KV outgoing cable circuit and then is communicated with the circuit; the insulation operation rod is transversely provided with a connecting rod on the rod body near the working section at the upper part of the insulation operation rod, a line jumper is hung on the connecting rod, and the lower part of the line jumper is connected with one end of a drainage wire; the other end of the drainage wire is connected with a connecting wire clamp through a bolt connecting shaft, the connecting wire clamp is connected with a cable connection lug, and the sequence of the current paths of the whole arc suppression device on the electric connection is as follows: 10KV outgoing cable, clamp spring type clamping heads, damping pressure springs, working sections at the upper parts of insulating operation rods, connecting rods arranged transversely, line jumper, drainage lines, bolt connecting shafts, connecting wire clamps and cable connection lugs.
Description
Technical Field
The invention relates to the field of live working, in particular to a rod type arc suppression device applied to lap joint operation of a 10KV outgoing cable and an overhead line.
Background
At present, along with the steady progress of the integral construction of the country, the development and normal operation of each industry are not separated from the requirement for electric power, so the requirements for electric power guarantee and electric network safety are continuously enhanced, and live working is particularly important in the large environment of the current construction world first-class distribution network.
Because in urban distribution lines, pure cables and pure overhead lines are fewer, in order to avoid traffic crossings, important buildings or design planning requirements, a hybrid line power supply mode of the cables and the overhead lines is mostly adopted, and therefore, live dismantling and spanning of the cables and overhead lines take up a large proportion of daily live working.
When the lap joint operation of the 10KV outgoing cable and the overhead line is carried out, the lap joint 10kV overhead line is in a normal working state, namely in a charged state, and the length of the 10kV cable which is generally required to be lap joint is longer, and the capacitance is larger, so that the cable capacitance is larger due to the electrification of the overhead line during lap joint, and if no auxiliary measures are taken, the extremely large capacitance current can be generated in the lap joint process, so that the arcing phenomenon occurs, and the safety of hot-line operation operators is threatened. Therefore, arc extinguishing devices are used in the working phase in order to reduce the operating current of the erection bypass.
The conventional arc extinguishing devices in the prior art can be generally divided into the following types: the simple hook type arc extinguisher comprises a straight hook type simple hook, a manual control arc extinguisher (comprising a manual operation rope), an insulating operation rod, a unidirectional fastening connection insulating rod and other auxiliary equipment, wherein the simple hook type arc extinguisher comprises the following components:
1. The whole structure of the straight hook type simple hook presents a U-shaped structure, the whole length of the straight hook at the back bending part is longer, the straight hook structure determines that the whole flexibility is insufficient, when live working is carried out, if wires are densely distributed, and particularly the space of the upper wires is insufficient, the hook is required to be transversely placed in the operation process to finish the work of connecting the wires, but the whole device is required to be transversely placed because the hook and the rear whole operation rod are integrated, so that the great operation difficulty is caused;
2. Manual control arc suppressors (including manual operating cords) are roughly divided into three parts: the device comprises a closed insulating arc extinguishing chamber, a simple single-blade manual knife switch and a manual operation pull rope. The whole jumper part has simple structure, the opening and closing states of the cutter switch are marked outside, but the real working state of the internal cutter switch cannot be seen, so that the initial position of the cutter switch is required to be determined by opening equipment before each use in order to ensure the operation accuracy, the workload is increased, the working time is greatly increased, the external identifier of the jumper is difficult to identify in a dark environment, the indirection causes the safety to be reduced, and the safety of operators is threatened.
3. The whole insulating operating rod is made of stainless steel, the upper portion of the insulating operating rod is rigidly connected with the hook in a connecting mode, no buffer device exists, no buffer space exists, the whole connecting system can meet certain mechanical strength, the wire can jump or swing due to excessive force in the actual operation process, the inter-phase distance is insufficient, certain potential safety hazards exist, if the whole tool is used for a long time, if the insulating operating rod is separated from the hook at the upper portion due to external environmental factors in the working process, safety accidents can be caused, and the potential safety hazards exist greatly.
4. The one-way fastening connection insulator spindle, the whole set of arc extinction device and stride across cable lug direct contact device. The connecting part of the connecting lug of the cable junction or the connecting part on the transition support is clamped by the unidirectional fastening connecting insulating rod through adjusting the tightness degree of the screw in the connecting shaft in a traditional mode, so that the mode has obvious defects, on one hand, the applicable range of the unidirectional fastening connecting insulating rod is limited at present according to the type of the old cable, the cable is rapidly developed in the cable transmission mode, and secondly, the unidirectional fastening insulating rod can only clamp the cable lead in one direction, cannot realize omnibearing locking, has the hidden trouble that the cable falls off from the side surface, and greatly endangers the safety of operators. And the connecting joint is too simple and easy to lead to the relatively small area of contact between cable lead and the arc suppression device, directly leads to the current-carrying capacity to reduce, has increased the contact resistance of device and cable lead junction simultaneously, can appear the phenomenon of generating heat in the course of working, when external environment condition is unsuitable, has serious potential safety hazard.
In summary, the old arc suppression device in the prior art has serious design defects on hardware facilities, is primarily exposed in the previous distribution network uninterrupted operation process, can have serious potential safety hazards after being restricted by environmental factors, and seriously affects the operation efficiency and the universality of the device due to the rough process.
Disclosure of Invention
In order to solve the problems, the invention provides a rod type arc suppression device for the lap joint operation of a 10KV outgoing cable and an overhead line, which can adapt to the mutual supporting and matching power supply mode of the overhead line and the cable which are rapidly developed at present, and can solve the various defects of the arc suppression device in the prior art, and the rod type arc suppression device for the lap joint operation of the 10KV outgoing cable and the overhead line has the following specific structure:
the utility model provides a 10KV outgoing cable and overhead line overlap joint operation are with rod-type arc suppression device, includes insulating action bars, its characterized in that:
the damping pressure spring is connected with a clamp spring type chuck, and the clamp spring type chuck is fixedly clamped with the 10KV outgoing cable circuit and then is communicated with the circuit;
A connecting rod is transversely arranged on the rod body near the working section at the upper part of the insulating operating rod, a circuit jumper is connected to the connecting rod in a hanging manner, and the lower part of the circuit jumper is connected with one end of a drainage wire;
The other end of the drainage wire is connected with a connecting clamp through a bolt connecting shaft, the connecting clamp is connected with a cable connecting lug, and the sequence of the current paths of the whole arc extinguishing device on the electric connection is as follows: 10KV outgoing cable, clamp spring type clamping heads, damping pressure springs, working sections at the upper parts of insulating operation rods, connecting rods arranged transversely, line jumper, drainage lines, bolt connecting shafts, connecting wire clamps and cable connection lugs.
The rod type arc suppression device for lap joint operation of the 10KV outgoing cable and the overhead line is characterized in that the length of an insulating operation rod is 1.5m, wherein the working section at the upper part is 20cm, the insulating section at the middle part is 70cm, and the handheld section at the rear part is 60cm.
In terms of material selection, lighter materials should be selected, and at the same time, the mechanical strength of the insulating operating rod should be maintained.
The rod type arc suppression device for lap joint operation of the 10KV outgoing cable and the overhead line is characterized in that the damping pressure spring can be bent at a free angle, and a safety rope is arranged in the damping pressure spring and is connected with a working section at the upper part of an insulating operation rod and a clamp spring type chuck.
The damping pressure spring can be freely bent at an angle, and when working conditions are limited by operators, the clamping head can be conveniently hung on a wire or in a grounding ring; play the cushioning effect when connecting, reduce the rocking of wire, ensure inter-phase distance safety, and the insurance rope has two big effects: firstly, spacing effect, when connecting the wire, the spring can be restrained by the insurance rope when elongating to certain length, and the force that the operating personnel applyed can shift to the insurance rope this moment for connect can be smooth, secondly, when the pressure spring takes place unexpected crooked or fracture, can play the guard action, prevent that the chuck from droing and leading to the high altitude to weigh down the thing.
The rod type arc suppression device for lap joint operation of the 10KV outgoing cable and the overhead line is characterized in that a copper bar is arranged in the connecting rod and connected with a rod body near a working section at the upper part of an insulating operation rod, the copper bar is used as an electrical connecting piece from a clamp spring type chuck to the connecting rod, and the current passing capacity of the copper bar is 20A.
In actual operation, the current does not exceed 5A, which completely meets the actual operation requirement.
The rod type arc suppression device for the lap joint operation of the 10KV outgoing cable and the overhead line is characterized in that a vacuum arc suppression chamber is arranged in the line jumper, the rated breaking current of the line jumper is 300A, the rated voltage is 15kV, and the line jumper has the functions of carrying out load breaking and load connection on a high-voltage power network line.
The line jumper has the functions of carrying out load disconnection and load connection on the high-voltage power network line, can utilize a temporary bypass of the cable lap joint to short-circuit the line to be maintained, and overhauls or replaces equipment on the high-voltage line section under the condition that normal power transmission of the line is not affected. The jumper has a vacuum arc-extinguishing chamber, and can safely and effectively extinguish the electric arc when switching the line, so as to ensure that the line equipment is not ablated by the electric arc and ensure the personal safety of live working personnel.
The invention relates to a rod type arc suppression device for lap joint operation of a 10KV outgoing cable and an overhead line, which is characterized in that the drainage wire is specifically an annealed copper wire wrapped with a sheath, the sectional area of the drainage wire is 16mm 2, and the length of the drainage wire is 2.5-2.7 m.
The size of the cross section area of the drainage wire of 16mm 2 can ensure enough current-carrying capacity and can bear bypass current, in addition, the outer layer of the drainage wire is wrapped by 5 layers of polyvinyl chloride with different colors, so that the protection and insulation effects are achieved, and when a red layer is seen, the insulation is about to be destroyed, and the insulation needs to be treated in time.
The rod type arc suppression device for the lap joint operation of the 10KV outgoing cable and the overhead line has the following beneficial effects:
1. The rod type arc suppression device for the lap joint operation of the 10KV outgoing cable and the overhead line is suitable for various complicated live working projects, such as live connection of a crossing cable and overhead line lap joint work and live disconnection of the crossing cable and overhead line lap joint work, and has wide applicability.
2. The rod type arc suppression device for the lap joint operation of the 10KV outgoing cable and the overhead line overcomes the defects of the prior art, is easy to store and carry, is reasonable in design, is convenient for operators to operate and use at high altitude, and provides a more convenient, quick and safe operation mode for the operators.
Drawings
Fig. 1 is a schematic diagram of a specific structure of a rod-type arc extinguishing device for lap joint operation of a 10KV outgoing cable and an overhead line.
In the figure: the cable connector comprises a 1-insulating operating rod, a 2-damping pressure spring, a 3-clamp spring type clamping head, a 4-connecting rod, a 4 a-copper bar, a 5-line jumper, a 6-drainage wire, a 7-bolt connecting shaft, an 8-connecting wire clamp and a 9-cable lug.
Detailed Description
The rod type arc extinguishing device for the lap joint operation of the 10KV outgoing cable and the overhead line is further described below with reference to the accompanying drawings and the embodiment.
Examples
As shown in figure 1, the rod type arc suppression device for lap joint operation of the 10KV outgoing cable and the overhead line comprises an insulating operation rod 1, wherein a damping pressure spring 2 is sleeved at the working section of the upper part of the insulating operation rod, the damping pressure spring is connected with a clamp spring type chuck 3, and the clamp spring type chuck is fixedly clamped with the 10KV outgoing cable circuit and then is communicated with the circuit;
A connecting rod 4 is transversely arranged on the rod body near the working section of the upper part of the insulating operating rod 1, a line jumper 5 is connected to the connecting rod in a hanging way, and the lower part of the line jumper is connected with one end of a drainage wire 6;
The other end of the drainage wire 6 is connected with a connecting clamp 8 through a bolt connecting shaft 7, the connecting clamp is connected with a cable lug 9, and the current path sequence of the whole arc suppression device on the electric connection is as follows: 10KV outgoing cable, clamp spring type clamping heads, damping pressure springs, working sections at the upper parts of insulating operation rods, connecting rods arranged transversely, line jumper, drainage lines, bolt connecting shafts, connecting wire clamps and cable connection lugs.
The length of the insulating operating rod 1 is 1.5m, wherein the working section of the upper part is 20cm, the insulating section of the middle part is 70cm, and the holding section of the rear part is 60cm.
The damping pressure spring 2 can bend at a free angle, and a safety rope is arranged in the damping pressure spring and is connected with a working section on the upper part of the insulating operating rod 1 and the clamp spring type chuck 3.
The damping pressure spring can be freely bent at an angle, and when working conditions are limited by operators, the clamping head can be conveniently hung on a wire or in a grounding ring; play the cushioning effect when connecting, reduce the rocking of wire, ensure inter-phase distance safety, and the insurance rope has two big effects: firstly, spacing effect, when connecting the wire, the spring can be restrained by the insurance rope when elongating to certain length, and the force that the operating personnel applyed can shift to the insurance rope this moment for connect can be smooth, secondly, when the pressure spring takes place unexpected crooked or fracture, can play the guard action, prevent that the chuck from droing and leading to the high altitude to weigh down the thing.
The connecting rod 4 is internally provided with a copper bar 4a which is connected with a rod body near the working section on the upper part of the insulating operation rod 1, the copper bar is used as an electric connecting piece from the clamp spring type chuck to the connecting rod at a certain distance, and the current passing capacity of the copper bar is 20A.
In actual operation, the current does not exceed 5A, which completely meets the actual operation requirement.
The circuit jumper 5 is internally provided with a vacuum arc-extinguishing chamber, the rated breaking current of the circuit jumper is 300A, the rated voltage is 15kV, and the circuit jumper has the functions of carrying out load breaking and load connection on a high-voltage power network circuit.
The line jumper has the functions of carrying out load disconnection and load connection on the high-voltage power network line, can utilize a temporary bypass of the cable lap joint to short-circuit the line to be maintained, and overhauls or replaces equipment on the high-voltage line section under the condition that normal power transmission of the line is not affected. The jumper has a vacuum arc-extinguishing chamber, and can safely and effectively extinguish the electric arc when switching the line, so as to ensure that the line equipment is not ablated by the electric arc and ensure the personal safety of live working personnel.
The drainage wire 6 is specifically a soft copper wire wrapped with a sheath, the sectional area of the drainage wire is 16mm 2, and the length of the drainage wire is 2.5-2.7 m (2.6 m in the embodiment).
The size of the cross section area of the drainage wire of 16mm 2 can ensure enough current-carrying capacity and can bear bypass current, in addition, the outer layer of the drainage wire is wrapped by 5 layers of polyvinyl chloride with different colors, so that the protection and insulation effects are achieved, and when a red layer is seen, the insulation is about to be destroyed, and the insulation needs to be treated in time.
The rod type arc suppression device for the lap joint operation of the 10KV outgoing cable and the overhead line is suitable for various complicated live working projects, such as live connection of a crossing cable and overhead line lap joint work and live disconnection of the crossing cable and overhead line lap joint work, and has wide applicability; the invention overcomes the defects of the prior art, the whole device is easy to store and carry, has reasonable design, is convenient for operators to operate and use at high altitude, and provides a more convenient, quick and safe operation mode for the operators.
The rod type arc suppression device for the lap joint operation of the 10KV outgoing cable and the overhead line is suitable for the lap joint operation field of various 10KV outgoing cables and overhead lines.
Claims (6)
1.10KV outgoing cable and overhead line overlap joint operation are with rod-type arc suppression device, including insulating action bars (1), its characterized in that:
The damping pressure spring (2) is sleeved at the working section of the upper part of the insulating operating rod (1), and is connected with a clamp spring type chuck (3), and the clamp spring type chuck is fixedly clamped with the 10KV outgoing cable circuit and then is communicated with the circuit;
A connecting rod (4) is transversely arranged on the rod body near the working section at the upper part of the insulating operating rod (1), a line jumper (5) is hung on the connecting rod, and the lower part of the line jumper is connected with one end of a drainage wire (6);
The other end of the drainage wire (6) is connected with a connecting clamp (8) through a bolt connecting shaft (7), the connecting clamp is connected with a cable connecting lug (9), and the sequence of the current paths of the whole arc suppression device on the electric connection is as follows: 10KV outgoing cable, clamp spring type clamping heads, damping pressure springs, working sections at the upper parts of insulating operation rods, connecting rods arranged transversely, line jumper, drainage lines, bolt connecting shafts, connecting wire clamps and cable connection lugs.
2. The rod type arc extinguishing device for lap joint operation of 10KV outgoing cables and overhead lines according to claim 1, wherein the length of the insulating operation rod (1) is 1.5m, the working section of the upper part is 20cm, the insulating section of the middle part is 70cm, and the holding section of the rear part is 60cm.
3. The rod type arc suppression device for lap joint operation of 10KV outgoing cables and overhead lines according to claim 1 is characterized in that the damping pressure spring (2) can bend freely in angle, and a safety rope is arranged in the damping pressure spring and is connected with a working section at the upper part of the insulating operation rod (1) and the clamp spring type chuck (3).
4. The rod-type arc suppression device for lap joint operation of 10KV outgoing cables and overhead lines according to claim 1 is characterized in that a copper bar (4 a) is arranged in the connecting rod (4), the copper bar is connected with a rod body near a working section at the upper part of the insulating operation rod (1), the copper bar is used as an electrical connecting piece from a clamp spring type chuck to the connecting rod, and the current passing capacity of the copper bar is 20A.
5. The rod type arc extinguishing device for lap joint operation of 10KV outgoing cables and overhead lines according to claim 1, wherein a vacuum arc extinguishing chamber is arranged in the line jumper (5), rated breaking current of the line jumper is 300A, rated voltage of the line jumper is 15kV, and the line jumper has the functions of carrying out load breaking and load connection on high-voltage power network lines.
6. The rod-type arc extinguishing device for overlapping operation of 10KV outgoing cable and overhead line according to claim 1, wherein the drainage wire (6) is specifically a covered annealed copper wire, the sectional area of the drainage wire is 16mm 2, and the length of the drainage wire is 2.5-2.7 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810150698.3A CN108155501B (en) | 2018-02-13 | 2018-02-13 | Rod type arc suppression device for lap joint operation of 10KV outgoing cable and overhead line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810150698.3A CN108155501B (en) | 2018-02-13 | 2018-02-13 | Rod type arc suppression device for lap joint operation of 10KV outgoing cable and overhead line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108155501A CN108155501A (en) | 2018-06-12 |
| CN108155501B true CN108155501B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810150698.3A Active CN108155501B (en) | 2018-02-13 | 2018-02-13 | Rod type arc suppression device for lap joint operation of 10KV outgoing cable and overhead line |
Country Status (1)
| Country | Link |
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| CN (1) | CN108155501B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109004635B (en) * | 2018-07-18 | 2024-05-17 | 国网辽宁省电力有限公司盘锦供电公司 | Spring switching arc extinguisher |
| CN110649508B (en) * | 2019-10-23 | 2024-09-13 | 国网辽宁省电力有限公司辽阳供电公司 | Electrified arc extinction is branch closes ware for drainage |
| CN112670727B (en) * | 2020-12-28 | 2024-04-26 | 国网宁夏电力有限公司石嘴山供电公司 | 10KV live working overlap joint arc suppression device |
| CN114069477B (en) * | 2021-11-19 | 2024-02-20 | 国网山东省电力公司莱芜供电公司 | Complete device for fixing arc suppression switch and working method thereof |
| CN115241800B (en) * | 2022-07-22 | 2024-04-30 | 国网福建省电力有限公司南安市供电公司 | 10KV live working bypass flexible cable suspension device and installation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6610693A (en) * | 1965-07-30 | 1967-01-31 | ||
| FI880934A0 (en) * | 1987-03-11 | 1988-03-01 | Sachsenwerk Licht & Kraft Ag | LJUSBAOGSSLAECKNINGSANORDNING FOER LASTKOPPLINGSDON. |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108155501A (en) | 2018-06-12 |
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