CN109449865B - Method for disassembling fault low-voltage lightning arrester in live mode - Google Patents
Method for disassembling fault low-voltage lightning arrester in live mode Download PDFInfo
- Publication number
- CN109449865B CN109449865B CN201811308885.6A CN201811308885A CN109449865B CN 109449865 B CN109449865 B CN 109449865B CN 201811308885 A CN201811308885 A CN 201811308885A CN 109449865 B CN109449865 B CN 109449865B
- Authority
- CN
- China
- Prior art keywords
- low
- voltage arrester
- double
- head
- voltage
- 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.)
- Active
Links
Images
Classifications
-
- 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
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
-
- 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
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/40—Connection to earth
-
- 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
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/80—Discharge by conduction or dissipation, e.g. rods, arresters, spark gaps
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
A method for disassembling a fault low-voltage arrester in a live mode belongs to the field of arresters. The tail end of a double-end operating rod extends into the on-site cabinet through an installation hole at the bottom of the cabinet body, the head of a fixing screw is embedded into a second concave hole at the tail end of the double-end operating rod, and the fixing screw is screwed out of a screw hole on the transverse edge of the L-shaped strip-shaped grounding electrode; stretch into the on-the-spot cabinet with the head end of double-end action bars through the installation trompil department that is located cabinet body bottom, during the first shrinkage pool of double-end action bars head end is brought into low pressure arrester body, rotatory double-end action bars, unscrew the low pressure arrester body from the internal thread fixed orifices of operation knife switch below. The original transverse working mode of detaching the lightning arrester from the front side of the on-site cabinet is changed into the vertical working mode of detaching the low-voltage lightning arrester from the bottom of the installation cabinet, so that the electrified detachment of the low-voltage lightning arrester is realized, and the maintenance and the replacement of the low-voltage lightning arrester are rapidly carried out on site by maintenance personnel greatly.
Description
Technical Field
The invention belongs to the field of lightning arresters, and particularly relates to a lightning arrester for overvoltage protection of a low-voltage power system.
Background
A surge arrester is an electrical device used to protect electrical equipment from transient overvoltages (lightning strikes, operation, steep waves) and to rapidly cut off power frequency follow currents, usually in parallel with the line or equipment being protected.
Its main internal element is a non-linear resistor (such as zinc oxide resistor disc), and because of its good non-linearity, it is in high-resistance state under normal power frequency voltage, and the lightning arrester can not be operated. When overvoltage occurs, the lightning arrester acts to conduct the resistor disc, overvoltage impact current absorbs partial energy through the resistor disc and then leaks to the ground, so that the overvoltage is cut, the overvoltage value suffered by protected equipment is reduced, the overvoltage of a power supply circuit is limited, the insulation of electrical equipment is protected, and the effect of protecting the electrical equipment is achieved. When the overvoltage disappears, the lightning arrester is rapidly restored to the original state, so that the system can normally supply power.
The existing low-voltage lightning arrester is usually installed in a field cabinet on a telegraph pole (short for being called a pole), and a three-phase knife switch is usually arranged in a conventional field cabinet; the upper ends of the three-phase knife switch are respectively and correspondingly connected with the three-phase lines of the power transmission line; the upper ends of the three single-phase low-voltage arresters are respectively fixed on a wiring terminal or a wiring hole at the lower end of the three-phase knife switch; the lower end of each single-phase low-voltage arrester is provided with a grounding lead and a wiring nose which are correspondingly connected with the grounding electrode.
The existing wiring mode of the low-voltage arrester is that a wiring nose or a wiring bolt is fixed on a wiring terminal or a wiring hole at the lower end of a three-phase knife switch, and a grounding lead and the wiring nose at the lower end of the low-voltage arrester are also fixed on a grounding bar in a cabinet by bolts.
Based on the reason in the design, the terminal or the wiring hole of current three-phase knife switch lower extreme and the interior ground connection of cabinet are arranged according to the angle that the operator openly operated in the face of the installation cabinet, so all screw mounting holes all transversely set up.
In practical operation, when one or more of a group of three low-voltage arresters is damaged or penetrated by lightning, an operator is required to climb on the electric pole to replace the low-voltage arresters.
Because current installation cabinet inner space is limited, and current screw mounting hole all is horizontal setting, adopts current spanner to carry out the dismantlement working process of low pressure arrester, and the electrified part on every side is very easily touch to metal material's spanner, very is unfavorable for live equipment's safe operation and operator's personal safety. Therefore, under the existing conditions, the work of replacing the low-voltage arrester is usually carried out in a power failure state, so that the operation is inconvenient for a single person in a charged state, the continuous operation rate of power supply equipment is influenced, and the inconvenience in the power utilization process is also brought to power receiving users.
In practical work, a working mode or a method for replacing the low-voltage arrester in a live state, which can be carried out by a single person and is convenient for single-hand operation, is urgently needed to ensure the continuous operation of a power supply line and quickly recover the power supply operation of a fault line.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for disassembling a fault low-voltage arrester in a live mode. It is through adopting hollow double-end action bars, with original from the positive horizontal mode of dismantling the arrester of on-the-spot cabinet, change into through the vertical mode of dismantling the operation to the low-voltage arrester from the installation cabinet bottom, realized the electrified dismantlement of low-voltage arrester, made things convenient for maintenance personal to carry out the maintenance and the change of low-voltage arrester rapidly on the scene greatly.
The technical scheme of the invention is as follows: the method for disassembling the fault low-voltage arrester in a charged manner is provided, wherein the low-voltage arrester comprises an external thread type screw rod wiring terminal positioned at the upper end of a low-voltage arrester body and a grounding lead positioned at the lower end of the low-voltage arrester body and used for being connected with a grounding electrode; the low-voltage lightning arrester is arranged in a field cabinet on the electric pole; the field cabinet is internally provided with three-phase knife switch, and a low-voltage arrester is correspondingly arranged at the vertical internal thread fixing hole below each phase knife switch; the low-voltage lightning arrester is screwed and fastened with an internal thread fixing hole below the knife switch through an external thread type screw rod wiring terminal at the upper end of the body of the low-voltage lightning arrester; the grounding lead at the lower end of each low-voltage arrester is screwed and fixed in a screw hole on the transverse edge of an L-shaped strip grounding electrode on the inner wall of the lower part of the field cabinet through a fixing screw; mounting openings are formed in the corresponding cabinet body bottom edge below the operating knife switch in the field cabinet and are used as channels for the low-voltage arrester body and the double-head operating rod to enter and appear in the field cabinet body; the method is characterized in that:
arranging a hollow double-head operating rod;
a first concave hole matched with the shape and the size of the periphery of the lower part of the low-voltage arrester body is formed at the head end of the double-head operating rod;
the tail end of the double-end operating rod is provided with a second concave hole matched with the shape and the size of the head of a fixing screw used by the grounding lead;
the head end and the tail end of the double-end operating rod are connected into a whole through a hollow insulating rod;
when the head end of the grounding wire of a certain low-voltage arrester falls out of the field cabinet body from the mounting opening, the fault of the low-voltage arrester can be judged, and the operation is quitted;
at the moment, after hot-line work protection is well done by a field operator, the tail end of the double-head operating rod extends into the field cabinet through the mounting hole positioned at the bottom of the cabinet body, the fixing screw corresponding to the tail end of the grounding wire to which the fault low-voltage arrester belongs on the L-shaped strip grounding electrode is aligned, and the head of the fixing screw is embedded into a second concave hole at the tail end of the double-head operating rod;
rotating the double-end operating rod to screw out the fixing screw from the screw hole on the transverse edge of the L-shaped strip-shaped grounding electrode;
the double-head operating rod, the fixing screw embedded at the tail end of the double-head operating rod and the grounding wire are moved out of the field cabinet body from the mounting hole;
taking down a fixing screw embedded in a second concave hole at the tail end of the double-head operating rod;
the head end of the double-head operating rod extends into the on-site cabinet through an installation hole at the bottom of the cabinet body, and is aligned with a low-voltage arrester body which is screwed and fixed in an internal thread fixing hole below the operating knife switch;
bringing the low-voltage arrester body into a first concave hole at the head end of the double-head operating rod;
rotating the double-head operating rod to unscrew the low-voltage arrester body from the internal thread fixing hole below the operating knife switch;
the double-head operating rod and the low-voltage arrester body embedded at the head end of the double-head operating rod are moved out of the field cabinet body from the installation hole;
taking down the low-voltage arrester embedded in the first concave hole at the head end of the double-head operating rod;
and finishing the live disassembling process of the low-voltage arrester.
Specifically, the low-voltage arrester is a single-phase arrester.
Specifically, an internal thread fixing hole in a terminal of the operating knife switch is vertically arranged.
Specifically, the diameter of the installation hole at the bottom of the on-site cabinet is larger than the outer diameter of the low-voltage arrester body.
Specifically, the head of the fixing screw is a regular polygon.
Furthermore, the head of the fixing screw is a regular quadrangle, a regular pentagon or a regular hexagon.
The low-voltage arrester is installed/fixed on an internal thread fixing hole below an operating knife switch in the field cabinet.
The head end and the tail end of the double-head operating rod and the hollow insulating rod are made of insulating materials.
When the low-voltage arrester has an internal fault, the hot melting separation sleeve positioned at the lower end of the low-voltage arrester body drives the grounding lead to fall off from the low-voltage arrester body, the grounding lead is disconnected from the low-voltage arrester, and the fault low-voltage arrester is withdrawn from operation.
The internal fault at least comprises an internal flashover or degradation fault of the low-voltage arrester.
Compared with the prior art, the technical scheme of the invention has the advantages that:
1. the internal thread fixing hole on the binding post at the lower end of the operating knife switch and the screw hole on the strip-shaped grounding electrode are vertically arranged instead of transversely arranged, and a hollow double-head operating rod is used as an auxiliary, so that the original working mode of transversely disassembling the lightning arrester on the front side is changed into a vertical working mode of entering from the bottom of the mounting cabinet and mounting the low-voltage lightning arrester, the electrified disassembly of the low-voltage lightning arrester is realized, and the maintenance and replacement of the low-voltage lightning arrester can be rapidly carried out on the operating site on the rod of an outdoor power supply line by maintenance personnel;
2. the hollow double-end operating rod is small in length and size, convenient to carry, convenient to operate by a single person and a single hand, and greatly convenient for maintenance personnel to carry out live working on the rod on an outdoor site.
Drawings
Fig. 1 is a schematic structural view of the appearance of the low-voltage arrester of the invention;
FIG. 2 is a schematic view of the basic structure of the hollow double-ended operating rod;
fig. 3 is a schematic view of the method of disassembling the arrester according to the present invention;
fig. 4 is a schematic view of the ground pole mounting screw of the present invention.
In the figure, 1 is a low-voltage arrester body, 1-1 is a positioning bulge on the outer surface of the low-voltage arrester body, 2 is an external thread type screw rod wiring terminal at the upper end of the low-voltage arrester body, 3 is a grounding lead, 4 is a wiring lug, 5 is an on-site cabinet, 6 is an internal thread fixing hole below an operating knife switch, 7 is an L-shaped strip grounding electrode, 7-1 is a screw hole on the transverse edge of the L-shaped strip grounding electrode, 8 is a double-head operating rod, 8-1 is a first concave hole, 8-3 is a positioning groove, 8-2 is a second concave hole, 9 is a fixing screw, and 10 is an installation hole.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The low-voltage arrester in the technical scheme of the invention comprises an external thread type screw rod wiring terminal positioned at the upper end of a low-voltage arrester body and a grounding lead positioned at the lower end of the low-voltage arrester body and used for being connected with a grounding electrode.
The low-voltage lightning arrester is arranged in a field cabinet on the electric pole; the field cabinet is internally provided with three-phase knife switch, and a low-voltage arrester is correspondingly arranged at the vertical internal thread fixing hole below each phase knife switch.
The low-voltage arrester is screwed and fastened with a vertical internal thread fixing hole below each phase of knife switch through an external thread type screw rod wiring terminal at the upper end of the low-voltage arrester body; the grounding lead wire at the lower end of each low-voltage arrester is screwed and fixed on the transverse edge of the strip-shaped grounding electrode on the inner wall of the lower part of the field cabinet through a fixing screw.
The cross section of the strip-shaped grounding electrode is L-shaped, the vertical edge of the strip-shaped grounding electrode is fixed on the inner wall of the lower part of the on-site cabinet, and the transverse edge of the strip-shaped grounding electrode is provided with a plurality of screw holes for fixing screws.
When the low-voltage arrester has an internal fault, the hot melting separation sleeve positioned at the lower end of the low-voltage arrester body drives the grounding lead to fall off from the low-voltage arrester body, the grounding lead is disconnected from the low-voltage arrester, and the fault low-voltage arrester is withdrawn from operation.
When the hot melting separation sleeve drives the upper end of the grounding lead to fall off from the low-voltage arrester body, the grounding lead and the hot melting separation sleeve positioned at the upper end of the grounding lead fall out of the cabinet body from the mounting hole at the bottom edge of the field cabinet, and the lower end of the grounding lead is still fixed on the strip-shaped grounding electrode by the mounting screw.
In fig. 1, the technical solution of the present invention provides a method for electrically disassembling a failed low-voltage arrester, wherein the low-voltage arrester comprises a wiring terminal located at the upper end of a low-voltage arrester body 1, and a grounding lead 3 located at the lower end of the low-voltage arrester body and used for connecting with a grounding electrode, and the low-voltage arrester is installed in a field cabinet 5 on an electric pole; the field cabinet is internally provided with three-phase knife switch, and a low-voltage arrester is correspondingly arranged below each phase knife switch; the method is characterized in that:
a vertical internal thread fixing hole 6 is arranged on a binding post at the lower end of an operating knife switch in the on-site cabinet;
an external thread type screw rod wiring terminal 2 is arranged on a wiring terminal at the upper end of the low-voltage lightning arrester body;
fixedly connecting a strip-shaped grounding electrode 7 with an L-shaped cross section at the lower part in the on-site cabinet;
the vertical edge of the L-shaped strip-shaped grounding electrode is fixedly connected to the inner wall of the on-site cabinet, and 3 screw holes 7-1 are formed in the transverse edge of the L-shaped strip-shaped grounding electrode;
in fig. 2, a schematic structural view of the hollow double-headed operating lever 8 is shown.
The head end of the double-head operating rod is provided with a first concave hole 8-1 matched with the shape and the size of the lower end of the low-voltage arrester body;
the tail end of the double-end operating rod is provided with a second concave hole 8-2 matched with the shape and the size of the head of a screw used by the grounding lead;
the head end and the tail end of the double-head operating rod are connected into a whole through a hollow insulating rod.
As the periphery of the low-voltage arrester body is provided with the plurality of positioning bulges 1-1, correspondingly, the inner wall of the first concave hole 8-1 is correspondingly matched with the positioning grooves 8-3 with the same number.
Since the head of the fixing screw is regular polygon (usually the head of the fixing screw is regular four sides, regular five sides or regular hexagon), the cross section of the second concave hole 8-2 is also regular polygon structure, so as to accommodate and embed the head of the fixing screw.
In fig. 3, a corresponding mounting opening 10 is formed in the corresponding bottom edge of the terminal at the lower end of the operating knife switch in the field cabinet, and is used as a passage for the low-voltage arrester body and the double-head operating rod to enter the field cabinet;
as shown in fig. 3, when the head end of the ground wire of a certain low-voltage arrester falls out of the cabinet body of the field cabinet through the installation opening, it can be determined that the low-voltage arrester has a fault and is out of operation.
At the moment, after hot-line work protection is well done by a field operator, the tail end of the double-head operating rod extends into the field cabinet through the installation hole positioned at the bottom of the cabinet body, the fixing screw corresponding to the tail end of the grounding wire to which the fault low-voltage arrester belongs on the L-shaped strip grounding electrode is aligned, and the head of the fixing screw is embedded into the second concave hole at the tail end of the double-head operating rod.
And rotating the double-head operating rod to screw out the fixing screw from the screw hole on the transverse edge of the L-shaped strip-shaped grounding electrode.
And (4) moving the double-head operating rod, the fixing screw embedded at the tail end of the double-head operating rod and the grounding wire out of the field cabinet body from the mounting hole.
And taking down the fixing screw embedded in the second concave hole at the tail end of the double-head operating rod.
In fig. 4, the head end of the double-head operating rod is inserted into the on-site cabinet through the installation hole at the bottom of the cabinet body, and is aligned with the low-voltage arrester body screwed and fixed in the internal thread fixing hole below the operating knife switch;
bringing the low-voltage arrester body into a first concave hole at the head end of the double-head operating rod;
rotating the double-head operating rod to unscrew the low-voltage arrester body from the internal thread fixing hole below the operating knife switch;
the double-head operating rod and the low-voltage arrester body embedded at the head end of the double-head operating rod are moved out of the field cabinet body from the installation hole;
taking down the low-voltage arrester embedded in the first concave hole at the head end of the double-head operating rod;
and finishing the live disassembling process of the low-voltage arrester.
The low-voltage arrester is a single-phase arrester, namely, a low-voltage arrester is arranged below each knife switch of the three-phase operation knife switch.
The internal thread fixing hole on the binding post at the lower end of the operating knife switch is vertically arranged.
Further, the diameter of the installation hole 10 at the bottom of the field cabinet is larger than the outer diameter of the low-voltage arrester body 1.
As shown in fig. 3 and 4, the low voltage arrester is installed/fixed in an internally threaded fixing hole below (also called a lower end of) the operating knife switch in the field cabinet.
Furthermore, the upper end and the lower end of the double-end operating rod and the hollow insulating rod are made of insulating materials.
According to the technical scheme, the original transverse arrangement of the internal thread fixing hole in the wiring terminal at the lower end of the operating knife switch and the screw hole in the strip-shaped grounding electrode is changed into the vertical arrangement, and the hollow double-head operating rod is used for replacing the transverse working mode that an original installation operator needs to mount the low-voltage arrester with the front surface facing a field cabinet into the vertical working mode that the low-voltage arrester is fed from the bottom of the installation cabinet and is mounted, so that the electrified disassembly of the low-voltage arrester is realized, and the maintenance and replacement of the low-voltage arrester can be rapidly carried out on the site of a power supply line by maintenance personnel greatly.
The hollow double-end operating rod in the technical scheme has small length and size, is convenient to carry about and operate by a single hand, and greatly facilitates live working of maintenance personnel on the rod in an outdoor site.
The invention can be widely applied to the field of field operation maintenance or replacement work of low-voltage lightning arresters with working voltages of 1kV to below 0.5 kV.
Claims (10)
1. A method for disassembling a fault low-voltage arrester in a charged manner is disclosed, wherein the low-voltage arrester comprises an external thread type screw rod wiring terminal positioned at the upper end of a low-voltage arrester body and a grounding lead positioned at the lower end of the low-voltage arrester body and used for being connected with a grounding electrode; the low-voltage lightning arrester is arranged in a field cabinet on the electric pole; the field cabinet is internally provided with three-phase knife switch, and a low-voltage arrester is correspondingly arranged at the vertical internal thread fixing hole below each phase knife switch; the low-voltage lightning arrester is screwed and fastened with an internal thread fixing hole below the knife switch through an external thread type screw rod wiring terminal at the upper end of the body of the low-voltage lightning arrester; the grounding lead at the lower end of each low-voltage arrester is screwed and fixed in a screw hole on the transverse edge of an L-shaped strip grounding electrode on the inner wall of the lower part of the field cabinet through a fixing screw; mounting openings are formed in the corresponding cabinet body bottom edge below the operating disconnecting link in the field cabinet and are used as channels for the low-voltage arrester body and the double-head operating rod to enter and appear in the field cabinet body; the method is characterized in that:
arranging a hollow double-head operating rod;
a first concave hole matched with the shape and the size of the periphery of the lower part of the low-voltage arrester body is formed at the head end of the double-head operating rod;
the tail end of the double-end operating rod is provided with a second concave hole matched with the shape and the size of the head of a fixing screw used by the grounding lead;
the head end and the tail end of the double-end operating rod are connected into a whole through a hollow insulating rod;
when the head end of the grounding wire of a certain low-voltage arrester falls out of the field cabinet body from the mounting opening, the fault of the low-voltage arrester can be judged, and the operation is quitted;
at the moment, after hot-line work protection is well done by a field operator, the tail end of the double-head operating rod extends into the field cabinet through the mounting hole positioned at the bottom of the cabinet body, the fixing screw corresponding to the tail end of the grounding wire to which the fault low-voltage arrester belongs on the L-shaped strip grounding electrode is aligned, and the head of the fixing screw is embedded into a second concave hole at the tail end of the double-head operating rod;
rotating the double-end operating rod to screw out the fixing screw from the screw hole on the transverse edge of the L-shaped strip-shaped grounding electrode;
the double-head operating rod, the fixing screw embedded at the tail end of the double-head operating rod and the grounding wire are moved out of the field cabinet body from the mounting hole;
taking down a fixing screw embedded in a second concave hole at the tail end of the double-head operating rod;
the head end of the double-head operating rod extends into the on-site cabinet through an installation hole at the bottom of the cabinet body, and is aligned with a low-voltage arrester body which is screwed and fixed in an internal thread fixing hole below the operating disconnecting link;
bringing the low-voltage arrester body into a first concave hole at the head end of the double-head operating rod;
rotating the double-head operating rod to screw out the low-voltage arrester body from the internal thread fixing hole below the operating disconnecting link;
the double-head operating rod and the low-voltage arrester body embedded at the head end of the double-head operating rod are moved out of the field cabinet body from the installation hole;
taking down the low-voltage arrester embedded in the first concave hole at the head end of the double-head operating rod;
and finishing the live disassembling process of the low-voltage arrester.
2. A method for live dismantling of a faulty low-voltage arrester as claimed in claim 1, characterized in that said low-voltage arrester is a single-phase arrester.
3. The method for charged dismantling of a faulty low voltage arrester according to claim 1, characterized in that the female connector on the terminal stud of the operating switch is vertically arranged.
4. The method for live disassembly of a failed low-voltage arrester as claimed in claim 1 wherein the diameter of said field cabinet bottom mounting opening is greater than the outer diameter of the low-voltage arrester body.
5. A method for live dismantling of a faulty low-voltage arrester as claimed in claim 1, characterized in that the head of said fixing screw is of regular polygonal shape.
6. The method for live disassembly of a faulty low-voltage arrester according to claim 5, characterized in that the head of said fixing screw is a regular quadrangle, a regular pentagon or a regular hexagon.
7. The method for charged dismantling of a faulty low-voltage arrester as claimed in claim 1, characterized in that said low-voltage arrester is mounted/fixed on the female connector below the operating switch in the field cabinet.
8. The method for charged dismantling of a faulty low voltage arrester according to claim 1, characterized in that the head end and the tail end of the double-ended operating rod and the hollow insulating rod are made of insulating material.
9. The method for charged dismantling of a failed low voltage arrester as claimed in claim 1, wherein when the said low voltage arrester has an internal failure, the thermal fusion breaking sleeve located at the lower end of the low voltage arrester body drives the grounding lead to be detached from the low voltage arrester body, the grounding lead is disconnected from the electrical contact with the low voltage arrester, and the failed low voltage arrester is removed from operation.
10. Method for live dismantling of a faulty low-voltage arrester according to claim 9, characterized in that said internal fault comprises at least an internal flashover or degradation fault of the low-voltage arrester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308885.6A CN109449865B (en) | 2018-11-05 | 2018-11-05 | Method for disassembling fault low-voltage lightning arrester in live mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308885.6A CN109449865B (en) | 2018-11-05 | 2018-11-05 | Method for disassembling fault low-voltage lightning arrester in live mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109449865A CN109449865A (en) | 2019-03-08 |
| CN109449865B true CN109449865B (en) | 2020-05-15 |
Family
ID=65551386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811308885.6A Active CN109449865B (en) | 2018-11-05 | 2018-11-05 | Method for disassembling fault low-voltage lightning arrester in live mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109449865B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112039010A (en) * | 2020-09-04 | 2020-12-04 | 嘉兴麦远文化传媒有限公司 | Wireless lightning arrester installation method |
| CN112242688B (en) * | 2020-09-28 | 2021-12-17 | 国网黑龙江省电力有限公司电力科学研究院 | Lightning arrester for high-altitude power distribution system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100462440B1 (en) * | 2002-10-01 | 2004-12-29 | 정용기 | Dissipating charge transfer system air terminal |
| CN204481356U (en) * | 2014-12-30 | 2015-07-15 | 国家电网公司 | A kind of fast moving distribution integrated apparatus |
| CN104716597B (en) * | 2015-01-05 | 2017-06-16 | 熊宏兵 | A kind of ac high-voltage movable-type intelligent solid insulation vacuum switch cabinet |
| CN106898447A (en) * | 2015-12-21 | 2017-06-27 | 王坤 | A kind of arrester device |
| CN205986079U (en) * | 2016-07-31 | 2017-02-22 | 国网山东省电力公司日照供电公司 | Security arrester |
| CN207638471U (en) * | 2017-12-19 | 2018-07-20 | 卧龙电气集团股份有限公司 | A kind of connection box for motor with arrester |
| CN108711768A (en) * | 2018-08-21 | 2018-10-26 | 南通东源电力智能设备有限公司 | A kind of 35kV intelligent box substations |
-
2018
- 2018-11-05 CN CN201811308885.6A patent/CN109449865B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109449865A (en) | 2019-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109449865B (en) | Method for disassembling fault low-voltage lightning arrester in live mode | |
| EP0860013B1 (en) | Surge arrester | |
| CN209785676U (en) | novel air gap lightning arrester | |
| CN201498291U (en) | Detachable lightning arrester | |
| CN205376222U (en) | Two -stage series gap thunderbolt flashover protector of 10kV tape insulation | |
| CN109347048B (en) | Live-line installation method of low-voltage lightning arrester | |
| CN104332935B (en) | The 10kV distribution line lightning protection device of energy charged for replacement | |
| CN111293661B (en) | Bidirectional lightning protection disconnection protection method and device for insulated conductor | |
| CN112332220A (en) | Built-in series gap lightning arrester of distribution line | |
| CN203055840U (en) | High pressure fuse | |
| CN201877234U (en) | Detachable lightning arrester | |
| CN209199692U (en) | A kind of tension-resistant rod external series gap metal oxide arrester | |
| CN210693223U (en) | Voltage transformer isolation combination device applied to uninterrupted operation | |
| CN107833708A (en) | One kind has changeable lightning arrester in the case of electricity | |
| CN201450327U (en) | Overvoltage protector with release device | |
| CN111696772A (en) | Internal lightning protection assembly of box-type transformer and operation method of internal lightning protection assembly | |
| CN209199696U (en) | A kind of novel metal oxide arrester | |
| CN109411168B (en) | Method for enabling low-voltage lightning arrester to have automatic separation function | |
| CN214796968U (en) | Insulation enhanced protection device | |
| CN214588271U (en) | Line arrester separation device | |
| CN204694796U (en) | Surge arrester failure indicating device | |
| CN204614563U (en) | A kind of asymmetric penetrating electrodes for Penetrative lightning arrester | |
| CN106099819A (en) | A kind of cable sheath protection device | |
| CN215266150U (en) | Trip type breakdown safety | |
| CN215183342U (en) | Combined lightning protection device |
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 |