L-12-70/400 Yoke Plate

The whole plate measures roughly 400mm × 120mm, fabricated from solid carbon steel sheet with a uniform thickness of 16mm. Two sets of hole spacing are reserved on the body：70mm and 24mm, paired with two standard hole sizes of 16mm and 18mm to fit various matched bolts and connecting rings. The finished product weighs about 4.66–4.7kg, with a main assembly hole of 24mm for stable connection. Every unit undergoes full hot-dip galvanizing treatment after forming. The dense zinc coating forms a tight barrier against rust, salt spray and atmospheric erosion, delivering stable performance year-round in all open-air power operation environments. For 110kV project construction, matching this yoke plate with U-12 or U-1695 type connecting rings can optimize overall assembly balance and stress distribution, fully complying with international power engineering construction standards.

Unlike other series of connection plates, the L-1240 has targeted application scenarios based on its structural design. It specializes in fixing split conductors onto insulator strings and joining multiple ground wires in parallel. To distinguish from other fittings in our catalog: LF square yoke plates serve double insulator string and double split wire assembly; LV plates focus on parallel connection of two guy wires; LS series work as double connection fittings for busbars. All model serial numbers correspond to their respective breaking load ratings, so clients can quickly pick suitable hardware according to the actual tension demand of their power lines, with differentiated dimensions to satisfy diverse on-site connection layouts.

As an indispensable part of overhead transmission hardware, the L-1240 boasts multiple practical advantages for field construction. Its multi-hole layout supports flexible adjustment of split wire spacing when assembling tension insulator strings for double and multi-split conductors. The 400mm overall length creates a wide connection span to evenly disperse conductor tension across high-voltage circuits. It fits branch towers in substations neatly, simplifying the arrangement of multi-line junction hardware. With a 120kN breaking load capacity, it easily copes with extra mechanical stress brought by heavy ice coating and strong crosswinds, making it a preferred reinforcement fitting for wind-prone mountain and coastal zones.

Regular routine inspection is essential to avoid hidden line safety hazards during long-term service. Once any of the following defects appear, immediate replacement is mandatory;

Cracks or fractures: Tiny cracks at plate corners and bolt holes will expand quickly under continuous tension, sharply lowering the fitting's load resistance and risking sudden breakage;

Permanent deformation: Warping or dents deeper than 2mm will trigger connection offset under load. Replace the plate if bilateral structural tilt exceeds 5 degrees, as accurate alignment can no longer be guaranteed;

Heavy corrosion: If rust coverage surpasses 30% of the surface and steel substrate thickness loss exceeds 10%, anti-corrosion repair becomes ineffective, and a brand-new yoke plate must be installed.

We are a professional manufacturer with a complete range of standard yoke plates and customized power fittings. All our products pass strict mechanical load and galvanized layer testing before delivery. If you have questions about model selection, matching hardware or regular inspection standards for the L-1240 yoke plate, our technical sales team is ready to provide professional guidance for your transmission and substation projects