Dimensions: 16mm thick, 70mm wide, 20mm hole diameter, 400mm hole spacing, approximately 210mm long.
Specifications: Breaking load 21kN.
Material: Made of carbon steel strip.
Surface treatment: Hot-dip galvanized for enhanced corrosion resistance, suitable for various outdoor environments.
Application: Primarily used for securing split conductors to insulator strings and paralleling multiple guy wires. It is a key component for reliably connecting conductors to insulator strings in high-voltage transmission lines.
Weight: Approximately 5.5kg.
The LF-2140 yoke plate is primarily used to connect two split conductors in a double insulator string. It has a thickness of 16mm, a hole pitch of 70mm, a hole diameter of 20mm, and a suitable conductor cross-section of 400mm². It has a breaking load of 210kN and weighs approximately 5.5kg. Its square shape is the primary function of providing a stable connection between two split conductors, providing increased stability.
The LF-2140 yoke plate is primarily used to connect two split conductors in a double insulator string. It has a thickness of 16mm, a hole pitch of 70mm, a hole diameter of 20mm, and a suitable conductor cross-section of 400mm². It has a breaking load of 210kN and weighs approximately 5.5kg. Its square shape is the primary function of providing a stable connection between two split conductors, providing increased stability. To ensure optimal performance, steel with a tensile strength of at least 372.5N/mm² is used during production, followed by hot-dip galvanizing, making it resistant to rust and corrosion and extending its service life.
As a connection fitting, the LF-2140 yoke plate has both advantages and disadvantages. Below, we'll introduce them for your convenience:
Advantages
Versatile: Suitable for assembling multiple insulator strings, compatible with connecting insulator strings to multiple split conductors and double-tie wires, and streamlines the overall wiring.
Easy Installation: The standardized hole design provides a perfect match with the insulator ball head hook, reducing on-site commissioning time.
Disadvantages
Limited Load Capacity: Because its load capacity is lower than similar coupling plates, it is not suitable for heavy-load applications.
Zinc Coating Durability Issues: In coastal environments, the zinc coating may crack or delaminate, requiring regular maintenance.
Since the galvanizing of the LF-2140 yoke plate is so important, how do we test the zinc coating thickness?
Magnetic Thickness Measurement: This is a commonly used measurement method. Using a magnetic thickness gauge, five points are measured on the joint plate surface, and the average value is used to determine the thickness.
Weighing Method: The LF-2140 yoke plate is pickled to dissolve the zinc layer, and the weight of the zinc layer is calculated based on the mass difference. While this method is more laborious, it is more accurate.
In addition, visual inspection of the joint plate is also possible. If cracks, flaking, or bubbles are observed, not only does the zinc layer not meet the requirements, but the quality also requires inspection.
Proper installation of the LF-2140 yoke plate can achieve twice the result with half the effort. First-time users, especially, should carefully read the instructions or follow the steps below for installation:
Installation Inspection
Check the coupling plate model to ensure it matches the load, the integrity of the zinc coating, and the smoothness of the surface. Ensure that tools such as a torque wrench and insulator string positioning fixture are available.
Alignment
Align the main hole of the LF-2140 yoke plate with the insulator ball head hook. Insert the pin. Connect the secondary hole to the second string of insulators using a double-nut locking mechanism.
Tightening Control
Tighten the bolts in two steps, applying 50% torque for the first tightening and 100% for the second tightening.
Of course, different installation methods will be required for different scenarios. Proper installation is crucial for optimal results.
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