The wear of the suspension clamp often causes an accident of the grounding of the lightning protection line, which is a huge hidden danger for the transmission line and the safety of people's lives and property. It will cause electric accidents such as electric brakes or wire-breaking lightning line blows, which is a huge loss for the power grid.
Under normal circumstances, the drop of the lightning protection line is due to the wear of the suspension clamp, and the main cause of the wear of the suspension clamp is generally divided into two cases.
1. During the installation process, the size of the suspension clamp is too large or the lightning protection line is not pressed during installation. The lightning protection line and the hull generate vibration in the strong wind. When the lightning protection line wears to a certain extent, the wind or strong current will act. When the lightning protection line is blown and dropped, the lightning protection line is dropped from the suspension clamp and an electric power accident occurs.
Second, the thin hanging plate swings and cuts the hull under the action of the wind, because its wind action is constant, and the relative motion of the hanging plate and the hull of the suspended wire clamp lasts for a long time, the wear is frequent, and the force area of ​​the hull hanging shaft changes. Small, when worn to a certain extent, due to the weight of the lightning protection line itself, the suspension line hull falls from the suspension clamp, and a power accident in which the lightning protection line falls.
How to prevent the lightning line falling accident caused by the wear of the suspension clamp?
1. Strengthen inspection and security inspection of power lines
For the regular inspection of the suspension clamp, the security inspection is the main measure to prevent the lightning line from falling due to the wear of the suspension clamp. The wear condition of the suspension clamp needs to open the gasket on the hull of the hull hanging shaft of the suspension clamp during the safety inspection to find the specific wear condition of the hull. This requires the security personnel to perform their duties in the inspection process and master the necessary steps of the security inspection. To ensure that the hull wear of the suspension clamp is mastered and replaced regularly.
Second, pay attention to the key details during the installation process
The size of the suspension clamp is the key. In the installation, the size of the suspension clamp must be determined according to the section of the lightning protection line. In the installation, the aluminum tape winding work and the compaction work must be done strictly according to the process requirements. it is good.
And in the installation, in addition to the specific specifications of the load capacity of the metal fittings, there are detailed and thoughtful considerations for other strength parameters. For example, in the windy plain area, the wear of the hanging clamps is inevitable, so it is necessary to use wear-resistant suspension clamps or suspension clamps with wind-proof components in the installation.
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*Mechanical Characteristics:
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*Environmwntal:
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MATERIAL&FINISH
Insulator:PBT Glass Fiber(UL94V-0)
contact:Brass
Contact:Gold-Plated Over Nickel
SPECIFICATIONS
Current Rating:1A AC,DC
Voltage Rating:250V AC,DC
Temperature Range:-40℃ To+105℃
Contact Resistance:20mΩMin
Insulation Resistance:1000MΩ Min
Withstanding Voltage:500V AC/Min
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