Dimensions: Approximately 400mm x 120mm.
Main Parameters: Thickness: 16mm, hole pitches: 70mm and 24mm, hole diameters: 16mm and 18mm.
Material: Made of carbon steel.
Surface Treatment: Hot-dip galvanized to effectively prevent rust and corrosion, suitable for various outdoor power environments.
Application: Primarily used for securing split conductors to insulator strings and connecting multiple guy wires in parallel. Suitable for high-voltage transmission and transformation lines.
Mechanical Breaking Load: 120kN.
Weight: Approximately 4.66kg.
The L-1240 yoke plate is typically specified as L-12-70/400, where "12" represents a breaking load of 120 kN, "70" refers to a length of 70 mm, and "400" indicates a suitable conductor cross-section of 400 mm². The L-1240 yoke plate has specific dimensions: 16 mm thick, 24 mm aperture, 1240 mm long, and weighs approximately 4.7 kg.
The L-1240 yoke plate is typically specified as L-12-70/400, where "12" represents a breaking load of 120 kN, "70" refers to a length of 70 mm, and "400" indicates a suitable conductor cross-section of 400 mm². The L-1240 yoke plate has specific dimensions: 16 mm thick, 24 mm aperture, 1240 mm long, and weighs approximately 4.7 kg. It is manufactured from cast iron or steel and hot-dip galvanized to prevent rust and corrosion, extending its service life. It is used on 110 kV lines in conjunction with U-12 or U-1695 coupling rings to ensure quality and performance that meet power engineering requirements.
The L-1240 yoke plate is a type of L-type coupling plate. Different coupling plates have different applications. For example, the L-1240 yoke plate is used for connecting single-wire dual conductors or dual-wire single conductors. The LF coupling plate is used to connect two strings of insulators and two split conductors. The LV coupling plate is used for connecting two guy wires in parallel. The LS coupling plate is used for busbar dual coupling plates. The numbers on the coupling plates represent the breaking load markings. Coupling plates with different breaking loads are suitable for power line scenarios with different load requirements. Different models also vary in size to meet different connection requirements.
The L-1240 yoke plate, a key component in connection hardware, is primarily used in the following areas:
Multi-line parallel connection
Assembling tension insulator strings for double-split and multi-split conductors, with a multi-hole design enabling adjustable split spacing;
High-voltage transmission lines
The 1240 length allows for larger connection spans, distributing conductor tension within high-voltage lines;
Substation branch lines
Adapting to branch towers for multiple line junctions, simplifying hardware layout;
Strong wind zone reinforcement
Its high load capacity (120 kN) withstands additional mechanical stresses caused by harsh climates, such as ice-covered conductors or lateral forces from strong winds.
The L-1240 yoke plate plays a crucial role in its application. If severe performance failure results in unbalanced line loads or component loss, it should be inspected for appearance and performance after a period of use to determine if it needs replacement.
Cracks and Fractures
If cracks occur, they must be replaced immediately. Cracks can expand rapidly under load, causing a sudden drop in the breaking load. This is especially true for cracks at corners and joints. Replacement is necessary.
Joint Plate Deformation
Surface warping or denting exceeding 2mm causes the joint to shift under load. If the structural deviation between the two sides exceeds 5°, alignment with the joint becomes impossible and replacement is necessary.
Severe Corrosion
If the total corrosion area exceeds 30%, the thickness has decreased by more than 10%, and the rust is irreparable, a new L-1240 yoke plate must be replaced.
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