U70B-001-2 Suspension glass insulator

1. High Mechanical Strength

Made from high-strength glass materials, they can withstand substantial mechanical tension, with a rated mechanical failure load of up to 70 kN. This makes them suitable for transmission lines of various voltage classes, from medium-voltage distribution networks to high-voltage overhead systems, ensuring reliable mechanical support under heavy conductor loads and harsh weather conditions.

2. Excellent Electrical Performance

Featuring superior insulation and voltage resistance, they effectively prevent leakage current and flashover incidents, ensuring the safe operation of transmission lines. The glass material’s high dielectric strength maintains stable insulation performance even under overvoltage conditions, meeting the strict electrical requirements of modern power grids.

3. Good Self-Cleaning Property

The smooth glass surface is less prone to pollution accumulation, and rainwater can effectively wash away contaminants, reducing the need for manual cleaning. This self-cleaning capability minimizes maintenance workload, particularly in polluted environments, and helps maintain consistent insulation performance over time.

4. Zero-Value Self-Breaking

When internal defects or aging cause the insulation performance to degrade below a critical threshold, the insulator will self-break, making it easy to detect and replace in a timely manner. This feature eliminates the need for regular insulation resistance testing, reduces operational maintenance costs, and prevents sudden failures that could lead to power outages. The visible self-breaking mechanism enhances grid reliability by enabling proactive maintenance.

1. High Reliability

Proven through long-term operational practice, U70B suspension glass insulators exhibit stable performance and high reliability, capable of operating reliably for extended periods under various harsh natural environments and operating conditions. Their robust glass composition and mechanical design ensure consistent performance in extreme weather, minimizing the risk of sudden failures.

2. Good Economic Performance

Thanks to their zero-value self-breaking feature, the workload and costs of insulator detection are reduced, as defective units are visually identifiable without specialized testing. Additionally, their long service life and low maintenance requirements result in excellent overall economy, making them a cost-effective choice for large-scale power grid projects compared to ceramic or composite alternatives.

3. Convenient Maintenance

Unlike ceramic insulators, they do not require regular insulation testing or cleaning. Maintenance only involves periodic visual inspections to identify broken insulators for timely replacement, simplifying the maintenance process. This reduces labor costs and downtime, particularly beneficial for long-distance transmission lines or hard-to-reach areas, where frequent maintenance would be impractical.

1. Insulation Function

In transmission lines, insulators isolate live conductors from grounded structures, withstanding the line’s operating voltage and various overvoltages. This ensures current flows along the conductors, preventing leakage to the ground or towers and guaranteeing the safe and reliable operation of the power system. The insulation material maintains high dielectric strength to avoid flashovers under normal and fault conditions.

2. Mechanical Support

Insulators bear various mechanical loads, including the weight of conductors, wind force, and ice/snow accumulation, transmitting these forces to the steel towers. This ensures the mechanical stability of the transmission line, keeping conductors in their proper positions and preventing strand breakage or conductor failure due to uneven stress. Their robust design ensures structural integrity across diverse terrains and weather conditions, such as high-wind regions or heavy-icing areas.