The LF-type Connecting yoke plate is designed around the requirements of "double-connection adaptation + load balancing." From an overall structural perspective, it possesses the following characteristics:
Main Structure: The yoke plate is designed in a symmetrical, rectangular shape. The integrated forging process eliminates any splicing welds, effectively avoiding stress concentration during use. Symmetrical connection holes at both ends form a "central load-bearing, two-end connection" mechanical transmission, ensuring the load is evenly distributed to the insulator string and conductor.
Hole Layout: Each end has 1-2 connection holes, with the hole diameter precisely matching the connection dimensions of the insulator string and conductor clamps. The surface roughness is ≤Ra1.6μm, reducing wear during connection.
Edge Treatment: A 3-5mm rounded corner transition is used to prevent scratching the insulator string or conductor during installation, while also enhancing fatigue resistance and extending service life.
Load Capacity: Breaking load ≥210kN to ≥400kN; rated working load is 1/4-1/3 of the breaking load; suitable for 110kV-500kV. Voltage level requirements for double-strand insulator strings;
Material properties: Taking carbon steel as an example, yield strength ≥550MPa, tensile strength 670-830MPa, excellent low-temperature toughness, suitable for cold-climate power grid scenarios;
Corrosion resistance: The surface is hot-dip galvanized with a zinc layer thickness ≥86μm. After 5000 hours of neutral salt spray testing, no red rust appears, making it suitable for highly corrosive environments.
After introducing the performance parameters of the LF-type Connecting Yoke Plate, overseas users are paying more attention to four aspects when purchasing: compliance, compatibility, economy, and reliability. We offer comprehensive solutions to address these concerns:
Compliance: We inquire about the user's local power grid standards, customize performance to match those standards, and provide material certificates, certificates of origin, and corresponding product descriptions and parameter specifications to avoid customs clearance delays.
Compatibility: For high-voltage lines, we specify the destructive load and applicable voltage. For cold regions, we select materials with good low-temperature resistance. For special requirements, we adjust the structure, change materials, and upgrade surface treatments according to the user's needs to meet their requirements.
Economy: For standard models, users can compare FOB unit prices. Discounts are available for bulk purchases. As the manufacturer, we ship directly to users, eliminating middlemen and their markups. Combined with a service life of over 30 years, this significantly reduces operating costs.
Reliability: After-sales service is also a crucial detail for users. We provide installation manuals in both Chinese and English, as well as 3D... We provide assembly drawings and video tutorials. For some complex projects that require on-site guidance, our company has a large inventory of Connecting Yoke Plates. For standard models, we can ship directly, reducing the procurement cycle.
Connecting yoke plates can be used in various voltage environments. For each voltage increase, the rated load of the line increases by 30%-50%, and the insulator string length increases by 40%-60%. Below, we've compiled a list of different connecting yoke plate models to match different voltage levels, hoping it will be helpful for your procurement:
| voltage level | model | Material | Performance characteristics | Structural adaptation features |
| 110kV | LF-2140 | Q235B | Destructive load ≥ 210kN, weight 5.50kg | The design features a straight, narrow profile and a Φ20mm aperture, making it suitable for single-split conductors and 7-piece insulator strings. |
| 110kV | LF-2160 | Q235B | Destructive load ≥ 210kN, weight 8.80kg | The increased hole spacing (480mm) is adapted to the suspension requirements of long-span lines. |
| 220kV | LF-2540 | Q235B/Q550 | Destructive load ≥ 250kN, weight 11.0kg | Widened plate (110mm), aperture Φ24mm, suitable for two-split conductors and 13-piece insulator strings. |
| 330kV | LF-3040 | Q550 | Destructive load ≥ 300kN, weight 11.2kg | Thickened plate (18mm), aperture Φ26mm, suitable for three-split conductors and 17-piece insulator strings. |
| 500kV | LF-4050 | Q550 | Destructive load ≥ 400kN, weight 26.6kg | The central reinforcing rib design, with a Φ30mm aperture, is suitable for four-split conductors and strings of 25 insulator pieces. |
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