CN110571545B - Special earthing device of 400v air switch - Google Patents
Special earthing device of 400v air switch Download PDFInfo
- Publication number
- CN110571545B CN110571545B CN201910892172.7A CN201910892172A CN110571545B CN 110571545 B CN110571545 B CN 110571545B CN 201910892172 A CN201910892172 A CN 201910892172A CN 110571545 B CN110571545 B CN 110571545B
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- Prior art keywords
- insulating rod
- grounding
- upper insulating
- soft copper
- rod
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 87
- 239000002184 metal Substances 0.000 claims abstract description 87
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000010949 copper Substances 0.000 claims abstract description 66
- 229910052802 copper Inorganic materials 0.000 claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 15
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 15
- 239000011810 insulating material Substances 0.000 claims description 10
- 238000009413 insulation Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 239000002436 steel type Substances 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
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
- H01R4/643—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for rigid cylindrical bodies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
- H01R4/646—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for cables or flexible cylindrical bodies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
Landscapes
- Installation Of Bus-Bars (AREA)
Abstract
A special grounding device for a 400v air switch comprises a threaded sleeve, an upper insulating rod, a lower insulating rod, an upper metal threaded area, a lower metal threaded area, soft copper connecting wires and a soft copper grounding wire; wherein: the screw sleeve is arranged in the upper insulating rod, the upper metal screw thread area is fixed at one end of the upper insulating rod, the lower metal screw thread area is fixed at one end of the lower insulating rod, the soft copper connecting wire is positioned inside the upper insulating rod, and the soft copper grounding wire is positioned inside the lower insulating rod. The invention has the advantages that: the structure is simple, the production cost is low, the failure rate is low, and the service life is long; the problems that the traditional grounding device is easy to loosen and fall off when being arranged on the load side of the air switch, and the occupied space is large and cannot be arranged at the dense position of equipment arrangement are solved, the short plates which are difficult to install the grounding device on the load side of the air switch are complemented, the hidden trouble of losing grounding protection is avoided, and the safety of personnel and equipment is ensured.
Description
Technical Field
The invention relates to the field of special grounding device structures, in particular to a 400v air switch special grounding device.
Background
In the power failure operation, the ground protection is an important technical measure for ensuring safety, and once the ground protection is lost, serious potential safety hazards can occur, so that serious safety accidents of personnel and equipment are caused. In the distribution network, traditional earthing device is fit for installing on checking electric ground ring or directly installs on bare conductor, when the 400v air switch load side power failure of needs to be overhauld distribution station, box become or ring type case, traditional earthing device needs to press from both sides the ground connection chuck in air switch load side outlet terminal department, because the outlet terminal is mostly flat steel type, does not adapt with the ground connection chuck, has not hard up, drops scheduling problem, easily loses ground connection protection. Meanwhile, because equipment is densely arranged in the space where the air switch is located and the inter-phase space of the load side of the air switch is smaller, the grounding chuck cannot extend into the box.
Disclosure of Invention
The invention aims to reliably ground a400 v air switch in power failure operation, and particularly provides a special grounding device for the 400v air switch.
The invention provides a special grounding device for a 400v air switch, which is characterized in that: the special grounding device for the 400v air switch comprises a threaded sleeve, an upper insulating rod, a lower insulating rod, an upper metal threaded region, a lower metal threaded region, soft copper connecting wires and a soft copper grounding wire;
Wherein: the screw sleeve is arranged in the upper insulating rod, the upper metal screw thread area is fixed at one end of the upper insulating rod, the lower metal screw thread area is fixed at one end of the lower insulating rod, the soft copper connecting wire is positioned inside the upper insulating rod, and the soft copper grounding wire is positioned inside the lower insulating rod.
The electric energy can be transmitted by adopting copper or aluminum alloy to be made, the electric energy can be fixed at the upper end of the upper insulating rod and can rotate along with the upper insulating rod, the inner wall of the sleeve is threaded, the electric energy can be installed on the bolt through rotation, the requirement of contact resistance is met, the current flowing through the bolt can be led into the electric energy self, and the threaded sleeve of different types can be replaced according to bolts of different sizes.
The upper insulating rod is characterized in that: the insulating material is hollow, meets the requirements of insulating property and mechanical strength, and is a main insulating part of the device.
The lower insulating rod is as follows: the insulating rod is made of insulating materials, is hollow, meets the requirements of insulating performance and mechanical strength, is a main insulating part of the device, and is in a specific form that the upper insulating rod wraps the lower insulating rod, and the upper end of the lower insulating rod is overlapped with the lower end of the upper insulating rod.
The upper metal thread area: the upper insulating rod is fixed at one end of the upper insulating rod, particularly at the overlapping position of the upper insulating rod and the lower insulating rod, and is made of copper or aluminum alloy, so that electric energy can be transmitted, the upper insulating rod is concave, threads are arranged on the concave inner wall, and the upper insulating rod and the lower insulating rod are connected with a lower metal threaded area through the threads, so that the requirement of contact resistance is met.
The lower metal thread region: the lower insulating rod is fixed at one end of the lower insulating rod, in particular at the overlapping position of the upper insulating rod and the lower insulating rod, is made of copper or aluminum alloy, can transmit electric energy, is convex, the convex part is provided with threads, the convex part of the lower metal threaded area is connected with the concave part of the upper metal threaded area through threads, the grounding current flowing through the upper metal threaded region can be transferred to the lower metal threaded region, the requirement of contact resistance is met, and the upper insulating rod and the lower insulating rod are connected together through the upper metal threaded region and the lower metal threaded region respectively.
The soft copper connecting wire comprises: the upper insulating rod is positioned inside the upper insulating rod, one end of the upper insulating rod is connected with the threaded sleeve, the other end of the upper insulating rod is connected with the upper metal threaded region, and the grounding current flowing through the threaded sleeve can be transmitted to the upper metal threaded region.
The soft copper grounding wire is positioned in the lower insulating rod, one end of the soft copper grounding wire is connected with the lower metal threaded region, the other end of the soft copper grounding wire is led out by the lower insulating rod and is connected with a grounding rod or other grounding bodies, and the grounding current flowing through the lower metal threaded region can be transmitted to the other grounding bodies of the grounding rod.
The soft copper grounding wire comprises: a 25 2 mm annealed copper wire with a transparent insulating sheath was used.
The soft copper connecting wire adopts a 25 2 mm soft copper bare wire.
The invention has the advantages that:
According to the grounding device special for the 400v air switch, the device is tightly connected with a grounding point in a mode of connecting the threaded sleeve with the bolt, so that the device is not easy to loosen and fall off, and the requirement of contact resistance is met. The device is arranged on the bolt, occupies small space, and is suitable for being used at the densely arranged parts of the equipment; the two-section type upper insulating rod and the lower insulating rod are designed, the upper insulating rod and the lower insulating rod are connected through threads, so that the requirement of electric connection is met, and when the device is installed in a rotating mode, the grounding wire led out of the device does not rotate along with the rotation, and the problems that the device is not firmly installed and even damaged due to the fact that the grounding wire rotates and is twisted are avoided; the upper insulating rod wraps the lower insulating rod, so that the integrity of insulation is ensured, and the insulation requirement of a grounding device is met; the replaceable threaded sleeve meets the requirements of bolts of various types, and has strong universality; the device can be installed on other equipment with bolts to be used as grounding protection, and has wide application range and strong practicability; the device has simple structure, low production cost, low failure rate and long service life; the problems that the traditional grounding device is easy to loosen and fall off when being arranged on the load side of the air switch, and the occupied space is large and cannot be arranged at the dense position of equipment arrangement are solved, the short plates which are difficult to install the grounding device on the load side of the air switch are complemented, the hidden trouble of losing grounding protection is avoided, and the safety of personnel and equipment is ensured.
Drawings
The invention will be described in further detail with reference to the accompanying drawings and embodiments:
fig. 1 is a schematic diagram of a grounding device special for a 400v air switch.
In the figure, a threaded sleeve 1, an upper insulating rod 2, a lower insulating rod 3, an upper metal threaded region 4, a lower metal threaded region 5, a soft copper connecting wire 6 and a soft copper grounding wire 7.
Detailed Description
Example 1
The invention provides a special grounding device for a 400v air switch, which is characterized in that: the special grounding device for the 400v air switch comprises a threaded sleeve, an upper insulating rod, a lower insulating rod, an upper metal threaded region, a lower metal threaded region, soft copper connecting wires and a soft copper grounding wire;
Wherein: the screw sleeve is arranged in the upper insulating rod, the upper metal screw thread area is fixed at one end of the upper insulating rod, the lower metal screw thread area is fixed at one end of the lower insulating rod, the soft copper connecting wire is positioned inside the upper insulating rod, and the soft copper grounding wire is positioned inside the lower insulating rod.
The electric energy can be transmitted by adopting copper or aluminum alloy to be made, the electric energy can be fixed at the upper end of the upper insulating rod and can rotate along with the upper insulating rod, the inner wall of the sleeve is threaded, the electric energy can be installed on the bolt through rotation, the requirement of contact resistance is met, the current flowing through the bolt can be led into the electric energy self, and the threaded sleeve of different types can be replaced according to bolts of different sizes.
The upper insulating rod is characterized in that: the insulating material is hollow, meets the requirements of insulating property and mechanical strength, and is a main insulating part of the device.
The lower insulating rod is as follows: the insulating rod is made of insulating materials, is hollow, meets the requirements of insulating performance and mechanical strength, is a main insulating part of the device, and is in a specific form that the upper insulating rod wraps the lower insulating rod, and the upper end of the lower insulating rod is overlapped with the lower end of the upper insulating rod.
The upper metal thread area: the upper insulating rod is fixed at one end of the upper insulating rod, particularly at the overlapping position of the upper insulating rod and the lower insulating rod, and is made of copper or aluminum alloy, so that electric energy can be transmitted, the upper insulating rod is concave, threads are arranged on the concave inner wall, and the upper insulating rod and the lower insulating rod are connected with a lower metal threaded area through the threads, so that the requirement of contact resistance is met.
The lower metal thread region: the lower insulating rod is fixed at one end of the lower insulating rod, in particular at the overlapping position of the upper insulating rod and the lower insulating rod, is made of copper or aluminum alloy, can transmit electric energy, is convex, the convex part is provided with threads, the convex part of the lower metal threaded area is connected with the concave part of the upper metal threaded area through threads, the grounding current flowing through the upper metal threaded region can be transferred to the lower metal threaded region, the requirement of contact resistance is met, and the upper insulating rod and the lower insulating rod are connected together through the upper metal threaded region and the lower metal threaded region respectively.
The soft copper connecting wire comprises: the upper insulating rod is positioned inside the upper insulating rod, one end of the upper insulating rod is connected with the threaded sleeve, the other end of the upper insulating rod is connected with the upper metal threaded region, and the grounding current flowing through the threaded sleeve can be transmitted to the upper metal threaded region.
The soft copper grounding wire is positioned in the lower insulating rod, one end of the soft copper grounding wire is connected with the lower metal threaded region, the other end of the soft copper grounding wire is led out by the lower insulating rod and is connected with a grounding rod or other grounding bodies, and the grounding current flowing through the lower metal threaded region can be transmitted to the other grounding bodies of the grounding rod.
The soft copper grounding wire comprises: a 25 2 mm annealed copper wire with a transparent insulating sheath was used.
The soft copper connecting wire adopts a 25 2 mm soft copper bare wire.
Example 2
The invention provides a special grounding device for a 400v air switch, which is characterized in that: the special grounding device for the 400v air switch comprises a threaded sleeve, an upper insulating rod, a lower insulating rod, an upper metal threaded region, a lower metal threaded region, soft copper connecting wires and a soft copper grounding wire;
Wherein: the screw sleeve is arranged in the upper insulating rod, the upper metal screw thread area is fixed at one end of the upper insulating rod, the lower metal screw thread area is fixed at one end of the lower insulating rod, the soft copper connecting wire is positioned inside the upper insulating rod, and the soft copper grounding wire is positioned inside the lower insulating rod.
The electric energy can be transmitted by adopting copper or aluminum alloy to be made, the electric energy can be fixed at the upper end of the upper insulating rod and can rotate along with the upper insulating rod, the inner wall of the sleeve is threaded, the electric energy can be installed on the bolt through rotation, the requirement of contact resistance is met, the current flowing through the bolt can be led into the electric energy self, and the threaded sleeve of different types can be replaced according to bolts of different sizes.
The upper insulating rod is characterized in that: the insulating material is hollow, meets the requirements of insulating property and mechanical strength, and is a main insulating part of the device.
The lower insulating rod is as follows: the insulating rod is made of insulating materials, is hollow, meets the requirements of insulating performance and mechanical strength, is a main insulating part of the device, and is in a specific form that the upper insulating rod wraps the lower insulating rod, and the upper end of the lower insulating rod is overlapped with the lower end of the upper insulating rod.
The upper metal thread area: the upper insulating rod is fixed at one end of the upper insulating rod, particularly at the overlapping position of the upper insulating rod and the lower insulating rod, and is made of copper or aluminum alloy, so that electric energy can be transmitted, the upper insulating rod is concave, threads are arranged on the concave inner wall, and the upper insulating rod and the lower insulating rod are connected with a lower metal threaded area through the threads, so that the requirement of contact resistance is met.
The lower metal thread region: the lower insulating rod is fixed at one end of the lower insulating rod, in particular at the overlapping position of the upper insulating rod and the lower insulating rod, is made of copper or aluminum alloy, can transmit electric energy, is convex, the convex part is provided with threads, the convex part of the lower metal threaded area is connected with the concave part of the upper metal threaded area through threads, the grounding current flowing through the upper metal threaded region can be transferred to the lower metal threaded region, the requirement of contact resistance is met, and the upper insulating rod and the lower insulating rod are connected together through the upper metal threaded region and the lower metal threaded region respectively.
Example 3
The invention provides a special grounding device for a 400v air switch, which is characterized in that: the special grounding device for the 400v air switch comprises a threaded sleeve, an upper insulating rod, a lower insulating rod, an upper metal threaded region, a lower metal threaded region, soft copper connecting wires and a soft copper grounding wire;
Wherein: the screw sleeve is arranged in the upper insulating rod, the upper metal screw thread area is fixed at one end of the upper insulating rod, the lower metal screw thread area is fixed at one end of the lower insulating rod, the soft copper connecting wire is positioned inside the upper insulating rod, and the soft copper grounding wire is positioned inside the lower insulating rod.
The electric energy can be transmitted by adopting copper or aluminum alloy to be made, the electric energy can be fixed at the upper end of the upper insulating rod and can rotate along with the upper insulating rod, the inner wall of the sleeve is threaded, the electric energy can be installed on the bolt through rotation, the requirement of contact resistance is met, the current flowing through the bolt can be led into the electric energy self, and the threaded sleeve of different types can be replaced according to bolts of different sizes.
The upper insulating rod is characterized in that: the insulating material is hollow, meets the requirements of insulating property and mechanical strength, and is a main insulating part of the device.
The lower insulating rod is as follows: the insulating rod is made of insulating materials, is hollow, meets the requirements of insulating performance and mechanical strength, is a main insulating part of the device, and is in a specific form that the upper insulating rod wraps the lower insulating rod, and the upper end of the lower insulating rod is overlapped with the lower end of the upper insulating rod.
The upper metal thread area: the upper insulating rod is fixed at one end of the upper insulating rod, particularly at the overlapping position of the upper insulating rod and the lower insulating rod, and is made of copper or aluminum alloy, so that electric energy can be transmitted, the upper insulating rod is concave, threads are arranged on the concave inner wall, and the upper insulating rod and the lower insulating rod are connected with a lower metal threaded area through the threads, so that the requirement of contact resistance is met.
The lower metal thread region: the lower insulating rod is fixed at one end of the lower insulating rod, in particular at the overlapping position of the upper insulating rod and the lower insulating rod, is made of copper or aluminum alloy, can transmit electric energy, is convex, the convex part is provided with threads, the convex part of the lower metal threaded area is connected with the concave part of the upper metal threaded area through threads, the grounding current flowing through the upper metal threaded region can be transferred to the lower metal threaded region, the requirement of contact resistance is met, and the upper insulating rod and the lower insulating rod are connected together through the upper metal threaded region and the lower metal threaded region respectively.
The soft copper connecting wire comprises: the upper insulating rod is positioned inside the upper insulating rod, one end of the upper insulating rod is connected with the threaded sleeve, the other end of the upper insulating rod is connected with the upper metal threaded region, and the grounding current flowing through the threaded sleeve can be transmitted to the upper metal threaded region.
The soft copper grounding wire is positioned in the lower insulating rod, one end of the soft copper grounding wire is connected with the lower metal threaded region, the other end of the soft copper grounding wire is led out by the lower insulating rod and is connected with a grounding rod or other grounding bodies, and the grounding current flowing through the lower metal threaded region can be transmitted to the other grounding bodies of the grounding rod.
Claims (6)
1. A special earthing device of 0.4kV air switch, its characterized in that: the special grounding device for the 0.4kV air switch comprises a threaded sleeve, an upper insulating rod, a lower insulating rod, an upper metal threaded region, a lower metal threaded region, a soft copper connecting wire and a soft copper grounding wire;
Wherein: the threaded sleeve is arranged in the upper insulating rod, the upper metal threaded area is fixed at one end of the upper insulating rod, the lower metal threaded area is fixed at one end of the lower insulating rod, the soft copper connecting wire is positioned in the upper insulating rod, and the soft copper grounding wire is positioned in the lower insulating rod; the threaded sleeve is made of copper or aluminum alloy, can transmit electric energy, is fixed at the upper end of the upper insulating rod, can rotate along with the upper insulating rod, is threaded on the inner wall of the sleeve, can be installed on a bolt through rotation, meets the requirement of contact resistance, can introduce current flowing through the bolt into the threaded sleeve, and can replace threaded sleeves of different types according to bolts of different sizes; the upper insulating rod is characterized in that: the insulating material is adopted for manufacturing, is hollow, meets the requirements of insulating property and mechanical strength, and is a main insulating part of the device; the lower insulating rod is as follows: the insulating rod is made of insulating materials, is hollow, meets the requirements of insulating performance and mechanical strength, is a main insulating part of the device, and is formed in a specific mode that the upper insulating rod wraps the lower insulating rod; the upper metal thread area: the upper insulating rod is fixed at one end of the upper insulating rod, particularly at the overlapping position of the upper insulating rod and the lower insulating rod, and is made of copper or aluminum alloy, so that electric energy can be transmitted, the upper insulating rod is concave, threads are arranged on the concave inner wall, and the upper insulating rod and the lower insulating rod are connected with a lower metal threaded area through the threads, so that the requirement of contact resistance is met.
2. The grounding device special for a 0.4kV air switch according to claim 1, wherein: the lower metal thread region: the lower insulating rod is fixed at one end of the lower insulating rod, in particular at the overlapping position of the upper insulating rod and the lower insulating rod, is made of copper or aluminum alloy, can transmit electric energy, is convex, the convex part is provided with threads, the convex part of the lower metal threaded area is connected with the concave part of the upper metal threaded area through threads, the grounding current flowing through the upper metal threaded region can be transferred to the lower metal threaded region, the requirement of contact resistance is met, and the upper insulating rod and the lower insulating rod are connected together through the upper metal threaded region and the lower metal threaded region respectively.
3. The grounding device special for a 0.4kV air switch according to claim 1, wherein: the soft copper connecting wire comprises: the upper insulating rod is positioned inside the upper insulating rod, one end of the upper insulating rod is connected with the threaded sleeve, the other end of the upper insulating rod is connected with the upper metal threaded region, and the grounding current flowing through the threaded sleeve can be transmitted to the upper metal threaded region.
4. The grounding device special for a 0.4kV air switch according to claim 1, wherein: the soft copper grounding wire is positioned in the lower insulating rod, one end of the soft copper grounding wire is connected with the lower metal threaded region, the other end of the soft copper grounding wire is led out by the lower insulating rod and is connected with a grounding rod or other grounding bodies, and the grounding current flowing through the lower metal threaded region can be transmitted to the other grounding bodies of the grounding rod.
5. The grounding device special for a 0.4kV air switch according to claim 1, wherein: the soft copper grounding wire comprises: 252mm annealed copper wire with transparent insulating sheath was used.
6. The grounding device special for a 0.4kV air switch according to claim 1, wherein: the soft copper connecting wire adopts a 252mm soft copper bare wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910892172.7A CN110571545B (en) | 2019-09-20 | 2019-09-20 | Special earthing device of 400v air switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910892172.7A CN110571545B (en) | 2019-09-20 | 2019-09-20 | Special earthing device of 400v air switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110571545A CN110571545A (en) | 2019-12-13 |
| CN110571545B true CN110571545B (en) | 2024-10-22 |
Family
ID=68781439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910892172.7A Active CN110571545B (en) | 2019-09-20 | 2019-09-20 | Special earthing device of 400v air switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110571545B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203787598U (en) * | 2014-04-15 | 2014-08-20 | 国家电网公司 | Cable distribution box special grounding wire |
| CN210838134U (en) * | 2019-09-20 | 2020-06-23 | 国网辽宁省电力有限公司营口供电公司 | Special earthing device of 400v air switch |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9124050B2 (en) * | 2012-07-19 | 2015-09-01 | Thomas & Betts International Llc | Electrical connector having grounding mechanism |
| CN103545686B (en) * | 2013-10-17 | 2016-02-17 | 国家电网公司 | Ground wire device special for low voltage work |
| CN205429192U (en) * | 2016-03-11 | 2016-08-03 | 国网天津市电力公司 | Novel low pressure earth connection device |
| CN109244688B (en) * | 2018-09-29 | 2023-11-07 | 广东电网有限责任公司 | 0.4kV ground wire fastening device |
-
2019
- 2019-09-20 CN CN201910892172.7A patent/CN110571545B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203787598U (en) * | 2014-04-15 | 2014-08-20 | 国家电网公司 | Cable distribution box special grounding wire |
| CN210838134U (en) * | 2019-09-20 | 2020-06-23 | 国网辽宁省电力有限公司营口供电公司 | Special earthing device of 400v air switch |
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| CN110571545A (en) | 2019-12-13 |
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