Product Overview
Strain clamps (also known as tension clamps or dead-end clamps) are essential power line fittings used to anchor conductors and ground wires to strain insulator strings on dead-end towers, terminal poles, and angle towers. Manufactured by YiHao Power, our strain clamp series includes traditional bolt-type clamps, wedge-type anchor clamps, preformed helical strain assemblies, and hydraulic compression clamps to suit various voltage levels and conductor specifications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Structural Types | Bolt Type (NLL/NLD), Wedge Type, Preformed Type, Hydraulic Compression Type |
| Body Material | Aluminum Alloy / Carbon Steel |
| Surface Protection | Hot-Dip Galvanized / Electro-Galvanized |
| Conductor Range | 10.0 mm – 45.0 mm (Custom sizes available) |
| Application Scope | Low to Extra-High Voltage Overhead Transmission Lines & Substations |
Product Types & Key Features
- Bolt-Type Strain Clamp (NLL Series): Utilizes multi-bolt pressure plates to clamp conductors securely. Ideal for low-to-medium voltage distribution lines with easy field installation.
- Wedge-Type Tension Clamp: Features a self-tightening wedge mechanism that increases holding force under tension, commonly used for ABC insulated cables and messenger wires.
- Preformed Helical Strain Assembly: Wraps preformed helical rods around the conductor to uniformly distribute stress, offering superior fatigue and vibration resistance.
- Hydraulic Compression Strain Clamp: Heavy-duty dead-end clamp crimped with a hydraulic press, integrated with jumper terminals for high-voltage transmission lines demanding max mechanical grip and electrical conductivity.
Quality Assurance
All strain clamps produced by YiHao Power undergo rigorous mechanical tensile tests, slip tests, electrical temperature-rise tests, and zinc coating thickness measurements to guarantee safe and maintenance-free operation in harsh outdoor environments.
