Power Transmission Line Yoke Plate
Power transmission line yoke plates are heavy-duty mechanical connection components used in overhead transmission line hardware assemblies. They connect multiple fittings or insulator string components, maintaining precise geometry while safely transferring mechanical loads across suspension and tension string assemblies.
- Product Introduction
Power transmission line yoke plates are heavy-duty mechanical connection components used in overhead transmission line hardware assemblies. They connect multiple fittings or insulator string components, maintaining precise geometry while safely transferring mechanical loads across suspension and tension string assemblies.
Selection must be based on complete string assembly geometry and system load design, rather than plate dimensions alone.
Technical Specifications
|
Parameter |
Specification / Option |
|
Product Configuration |
Rectangular, Triangular, Multi-Hole, Quad, or Custom Connection Plate |
|
Mechanical Strength (SML/UTS) |
70 kN to 800+ kN (Custom rated per line requirements) |
|
Material Grades |
Q235B (ASTM A36), Q355B / Q355D (S355JR / ASTM A572 Gr. 50), or Forged Steel |
|
Surface Protection |
Hot-Dip Galvanizing per ISO 1461, ASTM A153, or BS EN ISO 1461 |
|
Coating Thickness |
85 um to 100+ um average zinc layer (Customizable per project specification) |
|
Critical Dimensions |
Hole Diameter, Hole Spacing, Center-to-Center Distance, Plate Thickness, Profile |
|
Interface Options |
Clevis, Tongue, Pin, or Bolt Connection |
|
Applicable Standards |
IEC 61284, BS EN 61284, AS 1154, ASTM A153 |
|
Inspection & Quality Control |
Dimensional verification, Magnetic Particle Inspection (MPI), Tensile Load Testing |
Key Selection Factors
Mechanical Load Requirements
Define the specified mechanical load (SML) or ultimate tensile strength (UTS) required by the line design. Load capacity depends on structural engineering standards rather than plate thickness alone.
Connection Geometry and Fit
Verify hole center-to-center distances, hole diameters, and pin clearance to ensure seamless assembly with insulator strings and hardware fittings.
Material Selection
Choose structural carbon steel or high-strength low-alloy steel based on tensile requirements, fatigue limits, and operating temperatures.
Corrosion Protection
Outdoor high-voltage applications require hot-dip galvanizing to resist atmospheric corrosion. Coating parameters must comply with applicable international standards.
International Standard Compliance
Ensure all components comply with IEC 61284 or regional transmission authority specifications.
Manufacturing and Quality Control
Precision Machining: CNC laser/plasma cutting and automated drilling eliminate micro-cracks and stress concentrations.
Center-Distance Control: Micro-tolerance alignment prevents field assembly issues on multi-bundle conductor strings.
Post-Galvanizing Hole Clearing: Strict control over zinc accumulation in bolt and pin holes guarantees effortless installation on-site.
Information Required for RFQ
To receive an accurate engineering review and quotation, please provide:
• Detailed CAD drawing or PDF with tolerances
• Required quantity and project schedule
• Specified material grade
• Specified Mechanical Load (SML) rating in kN
• Hot-dip galvanizing standard and coating thickness requirement
• Required test certificates and documentation (e.g., Mill Test Certificates per EN 10204 3.1)
FAQ
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