Tempered Glass Suspension Insulators: Explained

Purpose of Glass Insulators in Transmission Lines

Glass insulators are essential components in high-voltage, ultra-high-voltage, and ultra-high-voltage AC/DC transmission lines. They are specifically designed to provide insulation and suspension of conductors, ensuring the efficient and safe transmission of electricity over long distances.

Advanced Structural Design

The product features an innovative cylindrical head structure, incorporating iron caps, tempered glass parts, and steel feet integrated with cement adhesive. This design allows for a compact head size, reduced weight, enhanced strength, and significant creepage distance, optimizing material usage and minimizing line costs.

Operational Efficiency and Maintenance

• Tempered glass insulators exhibit a zero value self-breakage characteristic, easily identifiable from the ground or via helicopter, reducing the need for physical inspection and lowering labor intensity.
• The annual operating self-rupture rate is remarkably low at 0.02-0.04%, which translates to cost savings in line maintenance.
• These insulators demonstrate excellent resistance to arc and vibration, maintaining insulation performance and mechanical strength even after exposure to lightning burns.
• Glass insulators are highly durable, withstanding various environmental conditions without aging, as confirmed by extensive testing and operational data.

Enhanced Electrical Performance

Owing to the dielectric constant of glass, ranging from 7-8, glass insulators offer large main capacitance and uniform voltage distribution in series. This feature effectively reduces radio interference and corona losses, prolonging the lifespan of the insulators.

Manufacturing Excellence

Jiangxi Huayao Electric Co., Ltd. specializes in producing glass insulators with capacities ranging from 40kN to 550kN, suitable for 10kV to 500kV transmission and transformation lines. Complying with international standards such as GB, ANSI, BS, DIN, AS, and IEC, Huayao utilizes advanced production and testing equipment from Germany and Italy, ensuring the annual production of over 6 million AC and DC glass insulators.