CN104393458A - Inspection earthing device and inspection earthing system - Google Patents

Inspection earthing device and inspection earthing system Download PDF

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Publication number
CN104393458A
CN104393458A CN201410665711.0A CN201410665711A CN104393458A CN 104393458 A CN104393458 A CN 104393458A CN 201410665711 A CN201410665711 A CN 201410665711A CN 104393458 A CN104393458 A CN 104393458A
Authority
CN
China
Prior art keywords
jump ring
sliding seat
inserted sheet
insulation board
inspection earthing
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.)
Pending
Application number
CN201410665711.0A
Other languages
Chinese (zh)
Inventor
黄建峰
覃金彩
许杨勇
吴坤祥
傅寒凝
刘红鑫
姜云土
丁健
刘慧妍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
Maintenance Branch of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
Maintenance Branch of State Grid Zhejiang Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Zhejiang Electric Power Co Ltd, Maintenance Branch of State Grid Zhejiang Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201410665711.0A priority Critical patent/CN104393458A/en
Publication of CN104393458A publication Critical patent/CN104393458A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02Contact members
    • H01R13/04Pins or blades for co-operation with sockets
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02Contact members
    • H01R13/10Sockets for co-operation with pins or blades
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables

Landscapes

  • Gas-Insulated Switchgears (AREA)

Abstract

The invention discloses an inspection earthing device and an inspection earthing system. The inspection earthing device comprises an insulating plate, a movable sliding seat arranged on the insulating plate, a male tab arranged on the sliding seat, and a snap spring fixed on the insulating plate; the earth terminal of an earth wire is connected to the sliding seat, the lead terminal of the earth wire is connected to the snap spring, and the snap spring is arranged oppositely to the male tab, and therefore, the snap spring is connected with or disconnected from the male tab by virtue of the movement of the sliding seat. In use, the earth terminal of the earth wire is earthed, the lead terminal of the earth wire is connected with a lead and the snap spring is connected with the male tab, and consequently, the earth protection of a low-voltage grade power transmission line needing to be inspected is realized by use of the inspection earthing device; as spark discharge on the lead is transferred to the inspection earthing device, the lead is prevented from being burnt, the problem of line damage due to spark discharge caused by direct earthing of the line is avoided, and meanwhile, the problem of potential safety hazards in line inspection is overcome.

Description

A kind of inspection earthing equipment and system
Technical field
The present invention relates to electric power overhaul field, particularly relate to a kind of inspection earthing equipment and system.
Background technology
Because the corridor of overhead transmission line is more and more crowded, the scissors crossing of the different electric pressure overhead transmission lines such as ultra high voltage, superhigh pressure, high pressure also gets more and more.Under the effect of power frequency alternating electromagnetic field, certain power-frequency voltage will be induced by the low-voltage-grade transmission line wire crossed over.
Usually, when overhauling the transmission line of below low-voltage-grade, the transmission line of top voltage levels does not generally have a power failure, and therefore, the induced voltage on the low-voltage-grade transmission line wire of interruption maintenance will bring problem to its maintenance normally.
Especially to the crossed line below UHV transmission line; if carry out protective earthing to below low-voltage-grade transmission line; line conductor, substation ground network, protective earthing line and protective earthing body etc. then will be made to form loop inductance, thus produce larger induced current.Due to top voltage levels circuit charging operation all the time, by long-term existence, under the continuous action of long-time, big current, may there is sparkover, cause the infringement to electric power facility in this induced current, and cause potential safety hazard to the maintenance of circuit.
Summary of the invention
In view of this, the invention provides a kind of inspection earthing equipment and system, may cause sparkover to solve long-time larger induced current in prior art, and cause the problem of potential safety hazard to line maintenance, its concrete scheme is as follows:
A kind of inspection earthing equipment, comprising: insulation board, is arranged at moveable sliding seat on described insulation board, is arranged at the first inserted sheet on described sliding seat, is fixed on the first jump ring on described insulation board,
The earth terminal of earth connection is connected sliding seat, and the conductor wire end of earth connection is connected the first jump ring, and described first jump ring and the first inserted sheet are oppositely arranged, and are convenient to the movement by described sliding seat, make described first jump ring be connected with the first inserted sheet or disconnect.
Further, also comprise: be fixed on the push-and-pull ring on described sliding seat, described push-and-pull ring is used for being connected with push rod, moves described sliding seat.
Further, also comprise: be arranged at the second inserted sheet on described sliding seat, be fixed on the second jump ring on described insulation board,
Described second jump ring is for connecting the conductor wire end of described earth connection, and described second jump ring and the second inserted sheet are oppositely arranged, and are convenient to the movement by described sliding seat, makes described second jump ring be connected with the second inserted sheet or disconnect.
Further, also comprise: sleeve,
Described sleeve is used for described insulation board, sliding seat, the first inserted sheet and the first jump ring to close to be integrated.
Further, also comprise: jump ring holder, described first jump ring is fixed on described insulation board by jump ring holder.
A kind of inspection earthing system, comprising: inspection earthing equipment, described inspection earthing equipment comprises: insulation board, is arranged at moveable sliding seat on described insulation board, is arranged at the first inserted sheet on described sliding seat, is fixed on the first jump ring on described insulation board,
The earth terminal of earth connection is connected sliding seat, and the conductor wire end of earth connection is connected the first jump ring, and described first jump ring and the first inserted sheet are oppositely arranged, and are convenient to the movement by described sliding seat, make described first jump ring be connected with the first inserted sheet or disconnect.
Further, described inspection earthing equipment also comprises: be fixed on the push-and-pull ring on described sliding seat, and described push-and-pull ring is used for being connected with push rod, moves described sliding seat.
Further, described inspection earthing equipment also comprises: be arranged at the second inserted sheet on described sliding seat, is fixed on the second jump ring on described insulation board,
Described second jump ring is for connecting the conductor wire end of described earth connection, and described second jump ring and the second inserted sheet are oppositely arranged, and are convenient to the movement by described sliding seat, makes described second jump ring be connected with the second inserted sheet or disconnect.
Further, described inspection earthing equipment also comprises: sleeve,
Described sleeve is used for described insulation board, sliding seat, the first inserted sheet and the first jump ring to close to be integrated.
Further, described inspection earthing equipment also comprises: jump ring holder, and described first jump ring is fixed on described insulation board by jump ring holder.
As can be seen from technique scheme, inspection earthing equipment and system disclosed in the present application, by insulation board, be arranged at moveable sliding seat on insulation board, be arranged at the inserted sheet on sliding seat, be fixed on the jump ring on insulation board, the earth terminal of earth connection is connected sliding seat, and by the conductor wire end connection circlip of earth connection, jump ring and inserted sheet are oppositely arranged, be convenient to the movement by sliding seat, make jump ring be connected with inserted sheet or disconnect.During use; by the earth terminal ground connection of earth connection; conductor wire end connects wire; and jump ring is connected with inserted sheet; namely achieve and need the low-voltage-grade transmission line of maintenance by the ground protection of inspection earthing equipment, by inspection earthing equipment is transferred in the sparkover on wire, achieve wire and do not burnt; avoid the problem of the sparkover damaged line directly line-to-ground caused, overcome problem line maintenance being caused to potential safety hazard simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of Fig. 1 a kind of inspection earthing equipment disclosed in the embodiment of the present invention;
The structural representation of Fig. 2 a kind of inspection earthing equipment disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention discloses a kind of inspection earthing equipment, its structural representation as shown in Figure 1, comprising:
Insulation board 1, sliding seat 2, the first inserted sheet 3, first jump ring 4.
Sliding seat 2 is arranged on insulation board 1, and the first inserted sheet 3 is arranged on sliding seat 2, and sliding seat 2 can drive the first inserted sheet 3 to move on insulation board, and the first jump ring 4 is fixed on insulation board 1.
First jump ring 4 and the first inserted sheet 3 are oppositely arranged, and sliding seat 2 can drive the first inserted sheet 3 to move to the position of the first jump ring 4, and the first inserted sheet 3 is connected with the first jump ring 4, and the connection of the first inserted sheet 3 and the first jump ring 4 also can be driven to disconnect.
During use, sliding seat 2 connects the earth terminal of earth connection, first jump ring 4 connects the conductor wire end of earth connection, by the earth terminal ground connection of earth connection, the conductor wire end of earth connection is connected wire, drives the first inserted sheet 3 to be connected with the first jump ring 4 by sliding seat 2, be grounded the ground connection of line, the sparkover produced during ground connection is completed on inspection earthing equipment, avoids the infringement to circuit.
After being used to complete, first moving sliding seat 2 makes the connection of the first inserted sheet 3 and the first jump ring 4 disconnect, disconnect the conductor wire end of earth connection and the connection of wire again, disconnect the earth terminal ground connection of earth connection, disconnect the conductor wire end of earth connection and the connection of the first jump ring 4, disconnect the earth terminal of earth connection and the connection of sliding seat 2.
Inspection earthing equipment disclosed in the present embodiment, pass through insulation board, be arranged at moveable sliding seat on insulation board, be arranged at the inserted sheet on sliding seat, be fixed on the jump ring on insulation board, the earth terminal of earth connection is connected sliding seat, by the conductor wire end connection circlip of earth connection, jump ring and inserted sheet are oppositely arranged, and are convenient to the movement by sliding seat, make jump ring be connected with inserted sheet or disconnect.During use; by the earth terminal ground connection of earth connection; conductor wire end connects wire; and jump ring is connected with inserted sheet; namely achieve and need the low-voltage-grade transmission line of maintenance by the ground protection of inspection earthing equipment, by inspection earthing equipment is transferred in the sparkover on wire, achieve wire and do not burnt; avoid the problem of the sparkover damaged line directly line-to-ground caused, overcome problem line maintenance being caused to potential safety hazard simultaneously.
Preferably, inspection earthing equipment disclosed in the present embodiment, can also comprise: push-and-pull ring 5.
Push-and-pull ring 5 is fixed on sliding seat 2, and push-and-pull ring 5, for being connected with push rod, moves sliding seat 2.
Further, inspection earthing equipment disclosed in the present embodiment, can also comprise: jump ring holder, and the first jump ring 4 is fixed on insulation board by jump ring holder.
Present embodiment discloses a kind of inspection earthing equipment, its structural representation as shown in Figure 2, comprising:
Insulation board 1, sliding seat 2, the first inserted sheet 3, first jump ring 4, push-and-pull ring 5, second inserted sheet 6, second jump ring 7.
Except the structure identical with a upper embodiment, the present embodiment also add the second inserted sheet 6 and the second jump ring 7.
Second jump ring 7 and the second inserted sheet 6 are oppositely arranged, and sliding seat 2 can drive the second inserted sheet 6 to move to the position of the second jump ring 7, and the second inserted sheet 6 is connected with the second jump ring 7, and the connection of the second inserted sheet 6 and the second jump ring 7 also can be driven to disconnect.
During use, sliding seat 2 connects the earth terminal of earth connection, second jump ring 7 connects the conductor wire end of earth connection, by the earth terminal ground connection of earth connection, the conductor wire end of earth connection is connected wire, drives the second inserted sheet 6 to be connected with the second jump ring 7 by sliding seat 2, be grounded the ground connection of line, the sparkover produced during ground connection is completed on inspection earthing equipment, avoids the infringement to circuit.
After being used to complete, first moving sliding seat 2 makes the connection of the second inserted sheet 6 and the second jump ring 7 disconnect, disconnect the conductor wire end of earth connection and the connection of wire again, disconnect the earth terminal ground connection of earth connection, disconnect the conductor wire end of earth connection and the connection of the second jump ring 7, disconnect the earth terminal of earth connection and the connection of sliding seat 2.
In inspection earthing equipment disclosed in the present embodiment, include the structure of two groups of jump rings and inserted sheet, can, when the sparkover of ground connection can not be completed for one group, use another group to complete.
Inspection earthing equipment disclosed in the present embodiment, pass through insulation board, be arranged at moveable sliding seat on insulation board, be arranged at the inserted sheet on sliding seat, be fixed on the jump ring on insulation board, the earth terminal of earth connection is connected sliding seat, by the conductor wire end connection circlip of earth connection, jump ring and inserted sheet are oppositely arranged, and are convenient to the movement by sliding seat, make jump ring be connected with inserted sheet or disconnect.During use; by the earth terminal ground connection of earth connection; conductor wire end connects wire; and jump ring is connected with inserted sheet; namely achieve and need the low-voltage-grade transmission line of maintenance by the ground protection of inspection earthing equipment, by inspection earthing equipment is transferred in the sparkover on wire, achieve wire and do not burnt; avoid the problem of the sparkover damaged line directly line-to-ground caused, overcome problem line maintenance being caused to potential safety hazard simultaneously.
Preferably, inspection earthing equipment disclosed in the present embodiment, can also comprise: sleeve, sleeve is used for insulation board 1, sliding seat 2, first inserted sheet 3, first jump ring 4, push-and-pull ring 5, second inserted sheet 6 and the second jump ring 7 all to close to be integrated, to avoid the bad weathers such as sleet, the effect of arc extinguishing can also be played simultaneously.
Present embodiment discloses a kind of inspection earthing system, comprising: inspection earthing equipment.
Shown in structural representation Fig. 1 or Fig. 2 of inspection earthing equipment, identical with above-described embodiment content, do not repeat them here.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Professional can also recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (10)

1. an inspection earthing equipment, is characterized in that, comprising: insulation board, is arranged at moveable sliding seat on described insulation board, is arranged at the first inserted sheet on described sliding seat, is fixed on the first jump ring on described insulation board,
The earth terminal of earth connection is connected sliding seat, and the conductor wire end of earth connection is connected the first jump ring, and described first jump ring and the first inserted sheet are oppositely arranged, and are convenient to the movement by described sliding seat, make described first jump ring be connected with the first inserted sheet or disconnect.
2. equipment according to claim 1, is characterized in that, also comprises: be fixed on the push-and-pull ring on described sliding seat, and described push-and-pull ring is used for being connected with push rod, moves described sliding seat.
3. equipment according to claim 1, is characterized in that, also comprises: be arranged at the second inserted sheet on described sliding seat, is fixed on the second jump ring on described insulation board,
Described second jump ring is for connecting the conductor wire end of described earth connection, and described second jump ring and the second inserted sheet are oppositely arranged, and are convenient to the movement by described sliding seat, makes described second jump ring be connected with the second inserted sheet or disconnect.
4. equipment according to claim 1, is characterized in that, also comprises: sleeve,
Described sleeve is used for described insulation board, sliding seat, the first inserted sheet and the first jump ring to close to be integrated.
5. equipment according to claim 1, is characterized in that, also comprises: jump ring holder, and described first jump ring is fixed on described insulation board by jump ring holder.
6. an inspection earthing system, is characterized in that, comprising: inspection earthing equipment, described inspection earthing equipment comprises: insulation board, is arranged at moveable sliding seat on described insulation board, is arranged at the first inserted sheet on described sliding seat, be fixed on the first jump ring on described insulation board
The earth terminal of earth connection is connected sliding seat, and the conductor wire end of earth connection is connected the first jump ring, and described first jump ring and the first inserted sheet are oppositely arranged, and are convenient to the movement by described sliding seat, make described first jump ring be connected with the first inserted sheet or disconnect.
7. system according to claim 6, is characterized in that, described inspection earthing equipment also comprises: be fixed on the push-and-pull ring on described sliding seat, and described push-and-pull ring is used for being connected with push rod, moves described sliding seat.
8. system according to claim 6, is characterized in that, described inspection earthing equipment also comprises: be arranged at the second inserted sheet on described sliding seat, is fixed on the second jump ring on described insulation board,
Described second jump ring is for connecting the conductor wire end of described earth connection, and described second jump ring and the second inserted sheet are oppositely arranged, and are convenient to the movement by described sliding seat, makes described second jump ring be connected with the second inserted sheet or disconnect.
9. system according to claim 6, is characterized in that, described inspection earthing equipment also comprises: sleeve,
Described sleeve is used for described insulation board, sliding seat, the first inserted sheet and the first jump ring to close to be integrated.
10. system according to claim 6, is characterized in that, described inspection earthing equipment also comprises: jump ring holder, and described first jump ring is fixed on described insulation board by jump ring holder.
CN201410665711.0A 2014-11-19 2014-11-19 Inspection earthing device and inspection earthing system Pending CN104393458A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410665711.0A CN104393458A (en) 2014-11-19 2014-11-19 Inspection earthing device and inspection earthing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410665711.0A CN104393458A (en) 2014-11-19 2014-11-19 Inspection earthing device and inspection earthing system

Publications (1)

Publication Number Publication Date
CN104393458A true CN104393458A (en) 2015-03-04

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CN201410665711.0A Pending CN104393458A (en) 2014-11-19 2014-11-19 Inspection earthing device and inspection earthing system

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6116935A (en) * 1998-04-08 2000-09-12 Yazaki Corporation Connector examination instrument
DE19821234B4 (en) * 1997-05-12 2004-11-18 Yazaki Corp. Method and device for the electrical connection of a fuse, mounted in a fuse housing, with an external electrical wire
CN201927836U (en) * 2011-01-14 2011-08-10 深圳市深铃车业有限公司 Output power supply automatic connecting device for battery box and electric vehicle employing same
CN202013997U (en) * 2011-03-28 2011-10-19 刘晔 Safe socket with sliding cover
CN103531371A (en) * 2013-10-18 2014-01-22 通能顺达科技国际有限公司 Quick bi-directional three-state switching power switch device
CN203521664U (en) * 2013-09-06 2014-04-02 珠海优特电力科技股份有限公司 Grounding device
CN103795003A (en) * 2014-02-27 2014-05-14 江苏省电力公司常州供电公司 Insulating wire lifting device for hot-line work of 35kV power supply line
CN204216353U (en) * 2014-11-19 2015-03-18 国家电网公司 A kind of inspection earthing equipment and system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19821234B4 (en) * 1997-05-12 2004-11-18 Yazaki Corp. Method and device for the electrical connection of a fuse, mounted in a fuse housing, with an external electrical wire
US6116935A (en) * 1998-04-08 2000-09-12 Yazaki Corporation Connector examination instrument
CN201927836U (en) * 2011-01-14 2011-08-10 深圳市深铃车业有限公司 Output power supply automatic connecting device for battery box and electric vehicle employing same
CN202013997U (en) * 2011-03-28 2011-10-19 刘晔 Safe socket with sliding cover
CN203521664U (en) * 2013-09-06 2014-04-02 珠海优特电力科技股份有限公司 Grounding device
CN103531371A (en) * 2013-10-18 2014-01-22 通能顺达科技国际有限公司 Quick bi-directional three-state switching power switch device
CN103795003A (en) * 2014-02-27 2014-05-14 江苏省电力公司常州供电公司 Insulating wire lifting device for hot-line work of 35kV power supply line
CN204216353U (en) * 2014-11-19 2015-03-18 国家电网公司 A kind of inspection earthing equipment and system

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