When selecting fittings for overhead distribution networks, transmission lines, and substations, engineers often encounter scenarios requiring a three-point load-bearing connection. Standard dual-link plates struggle to balance tension from three different directions; the three-hole triangular yoke plate-commonly referred to in the industry as an "LV-type" triangular link plate-is specifically designed for such applications. It is worth noting that some lightweight triangular brackets available on the market may look similar but have different load-bearing specifications; they cannot serve as direct substitutes for the load-bearing yoke plates used in power lines. It is advisable to clarify this distinction with clients during the initial consultation phase.
These yoke plates are manufactured via integral forging or by stamping from thick steel plate. The three holes are arranged in a triangular configuration-a geometry that offers inherent mechanical advantages, allowing loads to be distributed evenly across the plate surface and preventing stress concentration at any single point. Field environments for power lines are often harsh; factors such as persistent oscillation due to high winds, ice accumulation in winter, and cyclic loading caused by diurnal temperature fluctuations place significant demands on the long-term stability of the hardware. While welded assemblies often have vulnerable points at the weld seams, an integrally formed component eliminates this weakness, offering superior resistance to deformation. Standard materials include high-strength steels such as Q235 or Q355, though alloy steel can be used if project specifications require it. The components are typically hot-dip galvanized, providing sufficient corrosion resistance for long-term outdoor use. For projects located in coastal areas with high salt-spray exposure or on islands with high humidity, we can customize the anti-corrosion treatment to extend the component's service life.
The primary function of this yoke plate is to serve as a transition link between three points. It is frequently used in suspension insulator strings, attachment points for twin-bundle conductors, guy-wire assemblies, and as an interface between insulator strings and tower cross-arms. Field installation personnel often report that the triangular design simplifies assembly, as the hardware connected at the three points is less likely to interfere with one another, resulting in a more organized and orderly configuration on-site. For high-altitude installation, this component can be secured directly using U-shackles and bolt assemblies-eliminating the need for on-site welding. This significantly reduces installation time, a major advantage for retrofit projects with tight deadlines. It serves as a highly versatile, standard piece of power hardware, widely used in distributed photovoltaic (PV) grid-connection lines and small-to-medium-scale distribution network upgrades.
We maintain stock of standard, GB-compliant (national standard) specifications and also offer custom, non-standard manufacturing. As design standards vary significantly across different national power grids-with some projects requiring imperial-sized bolts or stricter requirements for ultimate breaking load-we can accommodate specific production needs based on your drawings or defined load parameters. Every batch undergoes random tensile testing to ensure the ultimate breaking load meets power hardware specifications. We can also provide CE certification documentation to assist with local project inspections and approvals.
A common pitfall to watch out for: triangular connection plates used for PV mounting structures or general steel framing are often thin and designed for lower loads; they are merely basic fasteners and must never be used at critical load-bearing nodes in power transmission lines. Always verify the intended application and rated load during procurement to prevent safety incidents caused by improper use. Each shipment includes a label detailing the plate thickness, galvanization thickness, and ultimate breaking load, making it easy for procurement teams and project supervisors to verify the specifications.
Whether you are a general contractor for power projects, a hardware wholesaler, or a line operations and maintenance provider, this three-hole triangular yoke plate is a proven solution, validated across numerous power line projects. We offer stable production capacity and can handle everything from large-volume orders to small-batch trial samples. Our packaging meets international export standards, featuring anti-rust protection suitable for long-distance ocean freight. If you have specific drawings, load requirements, or a project procurement plan, please feel free to reach out-we can provide a quick quote and a comprehensive hardware solution tailored to your needs.
