Handling of Conductor and Earth wire
The running blocks shall be suspended in a manner to suit design of the cross-arm. All running blocks specially those at the tensioning end, will be fitted on the cross arms with jute cloth wrapped over the steel works and under the sling to avoid damage to the slings as well as the protective surface finish of the steel work. In case, section towers are used even for temporary terminations, if this be unavoidable, they shall be well guyed and steps shall be taken to avoid damage. The drums shall be provided with a suitable breaking device to avoid damage, loose running out and kinking of the conductor. The conductor shall be continuously observed for loose or broken strands or any other damage. When approaching end of a drum length at least three coils shall be left when the stringing operations are stopped. These coils shall be removed carefully and if another and if another length is required to be run out a joint shall be made as per the recommendations of the conductor manufacturers. normally, the joints shall be so made that these are not required to pass through running out of blocks, the joints will be protected with suitable joint protector sleeves.
The conductors, joint and clamps shall be erected in such a manner that no bird-caging over-tensioning of individual wires or layers or other deformation or damage to the conductors shall occur. Clamps or hauling devices shall, under erection conditions, allow no relative movement of strands or layers of the conductors.
Repairs to conductors, in the event of damage being caused to isolated strands of a conductor during the course of erection, if necessary, shall be carried out during the running out operations with repair sleeves. Repairing of conductor surface shall be done only in case of minor damage, scuff marks etc, keeping in view both electrical and mechanical safety requirements. The final conductor surface shall be clean, smooth and shall be without any projections, sharp points, cuts, abrasions etc.
Repair sleeves may be used when the damage is limited to the outermost layers of the conductor.
Derricks shall be used where roads, rivers, channels, telecommunication or overhead power lines, railways, fences or walls have to be crossed during stringing operation. it shall be seen that normal services are not interrupted or damage caused to property. Shut down shall be obtained when working at crossing of overhead power lines.
The proposed transmission lines may run parallel for certain distance with the existing 400 KV, 220 KV & 132 KV lines which will remain energised during the stringing period. As a result, there is a possibility of dangerous voltage build up due to electromagnetic and electrostatic coupling in the pulling cables, conductors and earthwires which though comparatively small during normal operations can be severe during switching and ground fault conditions on the energised lines.
Contact us to discuss your requirements of Malleable Iron Suspension Clamp. Our experienced sales team can help you identify the options that best suit your needs.
Recommended article:Corona rings and Grading rings
How Does insulator porcelain Work?Which ATEX Flexible Metal Conduit is best?Frequently Asked Questions Answered by American FittingsMachMotion Support Running Cables Best PracticesUnlocking the Power of Interlock Gooseneck Tubes: Everything You Need to KnowArmored Fiber Patch: What are the top 5 benefits for businesses?Want more information on carriage bolts wood? Feel free to contact us.
For more features of insulatorsinformation, please contact us. We will provide professional answers.
Comments
All Comments (0)
Related Articles
The Future of IC Design: Innovations and Trends in Integrated Circuitry
Integrated Circuits (ICs) have come a long way since their inception, with advancements in design and technology shaping the landscape of electronics. As the demand for smaller, more efficient, and powerful devices continues to grow, IC design is at the forefront of innovation.
By CC
263
0
0
From Seismic Sensors to Tsunami Warnings: How Data Saves Lives
The Earth is a dynamic and ever-changing planet, and natural disasters like earthquakes and tsunamis are constant reminders of its unpredictability. In the face of these potentially catastrophic events, technology has become a beacon of hope.
By CC
281
0
0
10 Useful Commercial Solar Inverters
Senergy: Commercial solar inverters are larger and more powerful versions of residential inverters, specifically designed to handle the higher electricity demands of commercial and industrial applications.
By Ingrid
299
0
0
4-Megapixel USB Cameras vs. 1080p: Unraveling the Differences in Image Quality
As technology advances, the demand for higher image quality in cameras has grown significantly. One of the pivotal debates in the world of imaging technology is the comparison between 4-megapixel USB cameras and the familiar 1080p cameras. Both offer impressive resolution, but there are key differences in image quality, performance, and applications.
By CC
252
0
0
SMT PCB Buffer vs. Conveyors: Which Is Better for Your Assembly Line?
In the world of surface mount technology (SMT) PCB assembly, efficiency and throughput are critical. To achieve streamlined and productive assembly lines, manufacturers often face the decision of choosing between SMT PCB buffers and conveyors. Both serve important roles, but the choice between them depends on specific production needs and objectives.
By CC
260
0
0
What is High Frequency Welding?
High-frequency welding (HF welding) is a specialized welding process that uses high-frequency electrical energy to join two pieces of metal.
By Geym
273
0
0
What are the pros and cons of glass insulators?
Glass insulators have been historically used in electrical and telecommunication systems to provide insulation and support for overhead power lines and communication cables. While they offer certain advantages, they also come with drawbacks. Here are the pros and cons of glass insulators:
By Hou
244
0
0
What operating systems are supported by Rockchip SOM?
In the ever-evolving landscape of System on Modules (SOM), Rockchip stands as a prominent player, offering cutting-edge solutions for various applications. One pivotal aspect for users considering Rockchip SOM is understanding the compatibility with different operating systems.
By May
213
0
0