CN103268991A - Grounding device for 10kv cable branch box, ring main unit and ring main box - Google Patents

Grounding device for 10kv cable branch box, ring main unit and ring main box Download PDF

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Publication number
CN103268991A
CN103268991A CN2013101664062A CN201310166406A CN103268991A CN 103268991 A CN103268991 A CN 103268991A CN 2013101664062 A CN2013101664062 A CN 2013101664062A CN 201310166406 A CN201310166406 A CN 201310166406A CN 103268991 A CN103268991 A CN 103268991A
Authority
CN
China
Prior art keywords
ring main
grounding
wire clamp
cable branch
main unit
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
CN2013101664062A
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Chinese (zh)
Inventor
杨海峰
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
Shanghai Municipal Electric Power Co
Original Assignee
State Grid Corp of China SGCC
Shanghai Municipal Electric Power Co
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, Shanghai Municipal Electric Power Co filed Critical State Grid Corp of China SGCC
Priority to CN2013101664062A priority Critical patent/CN103268991A/en
Publication of CN103268991A publication Critical patent/CN103268991A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a grounding device for a 10kv cable branch box, a ring main unit and a ring main box. The grounding device for the 10kv cable branch box, the ring main unit and the ring main box comprises an insulating operating rod, a conductor grip, a grounding wire and a grounding clip, wherein the insulating operating rod is connected with the conductor grip in a split mode, the conductor grip comprises a conductor grip body, a threaded connecting copper bush, a grounding terminal and an insulating operating rod connecting element. The threaded connecting copper bush is arranged at a first end of the conductor grip body, the grounding terminal is arranged in the middle of the conductor grip body in a sleeved mode, and is connected with the grounding wire, nuts are arranged on the conductor grip body and two sides of the grounding terminal in a sleeved mode, and the insulating operating rod connecting element is arranged at a second end of the conductor grip body. The grounding device for the 10kv cable branch box, the ring main unit and the ring main box can be in good connection with a conductive part in the 10kv cable branch box, a conductive part in the ring main unit, and a conductive part in a ring main box power transformation cable bin, grounding is safe and reliable, the problem of hanging of the grounding wire in the 10kv cable branch box is solved, the requirements, regulated in rules, of the grounding wire and hanging connection can be met, operation is convenient, labor intensity of constructors are really reduced, and effective guarantee is provided for construction safety.

Description

The earthing device that is used for 10kv cable branch box, ring main unit, looped network case
Technical field
The present invention relates to a kind of earth connection, specifically, the present invention relates to a kind of change earth connection for 10kv cable branch box, ring main unit, looped network case.
Background technology
Existing earth connection all is that overhead transmission line or row use, for horizontal stroke articulates mutually, can't use in cable branch box, ring main unit, looped network case become, can only be in away from the overhead transmission line of job site or transformer station hanging earthing conductor, making troubles particularly to construction, secure context brings many uncertain factors.According to the electric power safety operational procedure to earth connection and articulate and should meet the following requirements:
One, earth connection is used and is made up of the multiply annealed copper wire of transparent sheath;
Two, the cross section must not be less than 25MM square;
Three, earth connection application wire clamp is fixed on the conductor, and it is reliable to contact good connection, and three-phase shortcircuit;
Four, the mounting or dismounting earth connection all should use insulating rod, and length is not less than 0.7M;
Five, the temporary grounding body section is not less than 190MM square (diameter 16MM).Inserting the underground degree of depth must not be less than 0.6M;
Six, must install the working earthing line additional to the equipment end that does not see contiguous earth connection.
For this reason, according to the practice of construction situation, can't hanging earthing conductor in the 10KV cable branch box of working site, contiguous earth connection is away from job site or in transformer station, can not satisfy above-mentioned the 6th, and need the many uncertain factors of secure context that ascend operation brings, should cause enough attention.Weak point mainly shows as:
1) increases operating crew's labour intensity, reduced operating efficiency.
2) increase the operating time, but reduced power consumption rate.
3) need ascend operation, reduced coefficient of safety.
4) do not see contiguous earth connection, bring hidden danger to construction safety.
Summary of the invention
The purpose of this invention is to provide a kind of change earthing device for 10kv cable branch box, ring main unit, looped network case, can form good the connection with current-carrying part in the storehouse at 10kv cable branch box, ring main unit, looped network case power transformation cable, safe and reliable ground connection, solved the problem of hanging earthing conductor in the feeder pillar, and can satisfy the rules defineds to earth connection and the requirement that articulates.
For achieving the above object, the invention provides a kind of earthing device for 10kv cable branch box, ring main unit, looped network case, it comprises: insulating bar, wire clamp, earth connection and earth clip, wherein, insulating bar adopts split type the connection with wire clamp, and this wire clamp comprises:
The wire clamp body,
Be arranged on the copper sheathing that is threaded of wire clamp body first end;
Be nested with the earth terminal at wire clamp body middle part, this earth terminal adopts sliding ring type to be connected with the wire clamp body, on the wire clamp body, the both sides of earth terminal all are arranged with nut, this earth terminal connection earth connection; And
Be arranged on the insulating bar Connection Element of wire clamp body second end.
The above-mentioned earthing device that is used for 10kv cable branch box, ring main unit, looped network case wherein, is provided with packing ring between nut and earth terminal.
The above-mentioned earthing device that is used for 10kv cable branch box, ring main unit, looped network case, wherein, the two ends of described insulating bar are the fixing specific purpose tool of going up all, axial screw connects (copper sheathing that is threaded is connected with the axial screw of cable termination), clamp nut (nut on earth terminal both sides is with the dead earth terminal) and removes the cable terminal insulation sealing cap when being used for hanging wire.
Analysis result by 10kv cable branch box, ring main unit, looped network case being become internal structure into, must change the mode of ground wire hitching, and make following regulation and require:
1) by the original mode that laterally articulates, changes the mode that axially articulates into.
2) hanging earthing conductor must connect reliably, and contact is good.
When 3) articulating, insulating bar and earth connection do not twine.
4) articulate, human body must not contact earth connection.
So the mode of wire clamp that must be by improving original earth connection solves the problem with grounding of 10KV cable branch box.
At first, being connected by laterally articulating of former earth connection and conductor is improved to the axial screw connection, can gos deep into cable terminal insulation sheath inside, the feasible copper sheathing that is threaded is connected with the cable termination fastening bolt, and the copper sheathing size can be made into different size according to fastening bolt.Solution articulates problem.For solving the winding problem of insulating bar and earth connection, adopt insulating bar and the mode that articulates wire clamp (being wire clamp) split, wire clamp is designed to sliding ring type with earth connection and is connected, it is fastening that the rear end adds nut, the fixing specific purpose tool of going up in the two ends of insulating bar, be used for articulating operation (axial screw connection) and fastening back end nut, and can remove the insulation sealing cap of cable termination, satisfy the requirement of above regulation.
In a word, earthing device provided by the invention can form good the connection with current-carrying part in the storehouse at 10kv cable branch box, ring main unit, looped network case power transformation cable, the safe and reliable ground connection of energy, solved the problem of hanging earthing conductor in the feeder pillar, and can satisfy the rules defined to earth connection and the requirement that articulates, and easy to operate, reduced workmen's labour intensity really, for construction safety provides effective assurance.
Description of drawings
Fig. 1 is the structural representation of the wire clamp of a kind of earthing device for 10kv cable branch box, ring main unit, looped network case of the present invention.
Fig. 2 is the scheme of installation of the wire clamp of a kind of earthing device for 10kv cable branch box, ring main unit, looped network case of the present invention.
Embodiment
Describe technical scheme of the present invention in detail below in conjunction with accompanying drawing.
The structure that is used for the earthing device of 10kv cable branch box, ring main unit, looped network case comprises: insulating bar, wire clamp, earth connection, earth terminal and earth clip.
As shown in Figure 1, be the structural representation of the wire clamp of the earthing device for 10kv cable branch box, ring main unit, looped network case provided by the invention.This wire clamp comprises:
Wire clamp body 11,
Be arranged on the copper sheathing 12 that is threaded of wire clamp body first end;
Be nested with the earth terminal 13 at wire clamp body middle part, this earth terminal 13 adopts sliding ring types to be connected with wire clamp body 11, on wire clamp body 11, the both sides of earth terminal 13 all are arranged with nut 14, these earth terminal 13 connection earth connections; More preferably, between nut 14 and earth terminal 13, be provided with packing ring 16; And
Be arranged on the insulating bar jockey 15 of wire clamp body second end, insulating bar adopts split type the connection with wire clamp, to avoid the winding risk of insulating bar and earth connection.
Preferably, the two ends of described insulating bar are the fixing specific purpose tool (this instrument is common tool) of going up all, axial screw connects (copper sheathing that is threaded is connected with the axial screw of cable termination), clamp nut (nut on earth terminal both sides is with the dead earth terminal) and removes the cable terminal insulation sealing cap when being used for hanging wire.
As shown in Figure 2, for the scheme of installation of wire clamp 10 of the present invention with cable termination 20, by the specific purpose tool of insulating bar end, make the copper sheathing that is threaded of wire clamp axially be rotatably connected with cable termination.
In sum, earth connection after the improvement can form good the connection with current-carrying part in the storehouse at 10kv cable branch box, ring main unit, looped network case power transformation cable, thereby reach the reliable ground purpose, solved this problem of hanging earthing conductor in the feeder pillar, and can satisfy the rules defined to earth connection and the requirement that articulates, and easy to operate, reduced workmen's labour intensity really, for construction safety provides effective assurance.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.

Claims (3)

1. earthing device that is used for 10kv cable branch box, ring main unit, looped network case, it comprises: insulating bar, wire clamp, earth connection and earth clip, it is characterized in that insulating bar adopts split type the connection with wire clamp, this wire clamp comprises:
Wire clamp body (11),
Be arranged on the copper sheathing that is threaded (12) of wire clamp body first end;
Be nested with the earth terminal (13) at wire clamp body middle part, this earth terminal (13) adopts sliding ring type to be connected with wire clamp body (11), both sides last at wire clamp body (11), earth terminal (13) all are arranged with nut (14), and this earth terminal (13) connects earth connection; And
Be arranged on the insulating bar Connection Element (15) of wire clamp body second end.
2. the earthing device for 10kv cable branch box, ring main unit, looped network case as claimed in claim 1 is characterized in that, is provided with packing ring (16) between nut (14) and earth terminal (13).
3. the earthing device for 10kv cable branch box, ring main unit, looped network case as claimed in claim 1, it is characterized in that, the two ends of described insulating bar all fixedly install specific purpose tool, axial screw connection when being used for hanging wire, clamp nut and dismounting cable terminal insulation sealing cap.
CN2013101664062A 2013-05-08 2013-05-08 Grounding device for 10kv cable branch box, ring main unit and ring main box Pending CN103268991A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013101664062A CN103268991A (en) 2013-05-08 2013-05-08 Grounding device for 10kv cable branch box, ring main unit and ring main box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013101664062A CN103268991A (en) 2013-05-08 2013-05-08 Grounding device for 10kv cable branch box, ring main unit and ring main box

Publications (1)

Publication Number Publication Date
CN103268991A true CN103268991A (en) 2013-08-28

Family

ID=49012606

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013101664062A Pending CN103268991A (en) 2013-05-08 2013-05-08 Grounding device for 10kv cable branch box, ring main unit and ring main box

Country Status (1)

Country Link
CN (1) CN103268991A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103545686A (en) * 2013-10-17 2014-01-29 国家电网公司 Ground wire device special for low voltage work
CN104020323A (en) * 2014-06-17 2014-09-03 国家电网公司 High-voltage power cable tension clamp
CN104466460A (en) * 2013-09-18 2015-03-25 住友电装株式会社 Earthing device
CN104538813A (en) * 2014-12-18 2015-04-22 国家电网公司 Operating rod of multifunctional grounding device special for meter installation and power connection
CN104538756A (en) * 2014-12-18 2015-04-22 国家电网公司 Multifunctional grounding device special for meter installation and power connection
CN104901228A (en) * 2015-05-22 2015-09-09 国家电网公司 Cable terminal grounding device
CN111064014A (en) * 2019-10-29 2020-04-24 国网浙江省电力有限公司舟山供电公司 Low-voltage grounding wire hanging terminal device of low-voltage cable branch box

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2485848Y (en) * 2001-04-25 2002-04-10 杨键 Inner ground wire for cable branch box
CN201360112Y (en) * 2009-01-01 2009-12-09 湖南省电力公司永州冷水滩供电局 Grounding device for high-tension cable branch box
CN203398357U (en) * 2013-05-08 2014-01-15 国家电网公司 Grounding device for 10kV cable branch box, ring main unit and ring main box

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2485848Y (en) * 2001-04-25 2002-04-10 杨键 Inner ground wire for cable branch box
CN201360112Y (en) * 2009-01-01 2009-12-09 湖南省电力公司永州冷水滩供电局 Grounding device for high-tension cable branch box
CN203398357U (en) * 2013-05-08 2014-01-15 国家电网公司 Grounding device for 10kV cable branch box, ring main unit and ring main box

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104466460B (en) * 2013-09-18 2017-04-12 住友电装株式会社 Earthing device
CN104466460A (en) * 2013-09-18 2015-03-25 住友电装株式会社 Earthing device
CN103545686A (en) * 2013-10-17 2014-01-29 国家电网公司 Ground wire device special for low voltage work
CN103545686B (en) * 2013-10-17 2016-02-17 国家电网公司 Ground wire device special for low voltage work
CN104020323A (en) * 2014-06-17 2014-09-03 国家电网公司 High-voltage power cable tension clamp
CN104538813A (en) * 2014-12-18 2015-04-22 国家电网公司 Operating rod of multifunctional grounding device special for meter installation and power connection
CN104538756A (en) * 2014-12-18 2015-04-22 国家电网公司 Multifunctional grounding device special for meter installation and power connection
CN104901228A (en) * 2015-05-22 2015-09-09 国家电网公司 Cable terminal grounding device
CN111064014A (en) * 2019-10-29 2020-04-24 国网浙江省电力有限公司舟山供电公司 Low-voltage grounding wire hanging terminal device of low-voltage cable branch box

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Application publication date: 20130828

C12 Rejection of a patent application after its publication