70 kN Toughened Glass Insulator: High Voltage Earth Wire

Structural Composition of Earth Wire Disc Suspension Glass Insulator

The earth wire disc suspension glass insulator is a crucial component in high-voltage transmission lines, offering excellent insulation performance and mechanical strength. Its primary materials include:

• Insulated Parts: Typically made from materials like glass, ceramics, or silicone rubber. These materials are renowned for their high voltage insulation performance, which effectively prevents current leakage. Tempered glass insulators are notable for zero value self-rupture, maintaining a smooth surface post-lightning to ensure continued insulation.
• Connection Fittings: These components connect insulators to form strings and attach them to towers and wires. Made from hot-dip galvanized iron and steel, these fittings resist rust and corrosion, ensuring secure connections. The spherical connection structure employs W-type and R-type push-pull elastic locking pins, crafted from copper for elasticity and corrosion resistance.

Types and Specifications of Glass Insulators

Glass insulators are available in various types, including standard, pollution-resistant, DC, spherical, aerodynamic, and those designed for electrified railways. Jiangxi Huayao Electric Co., Ltd produces a range from standard type glass insulators (40-550 kN) to pollution-resistant (70-400 kN) and aerodynamic types (120-300 kN).

70kN Standard Disc Suspension Glass Insulator U70CN

• Diameter: 200 mm
• Spacing: 210 mm
• Creepage Distance: 220 mm
• Coupling Size: 16 mm
• Mechanical Failing Load: 70 kN
• Tension Proof: 35 kN

Electrical Specifications

• Power Frequency Withstand Voltage WET: 30 kV
• Dry Power Frequency Withstand Voltage: 45 kV
• Puncture Withstand Voltage: 130 kV

Glass Insulator Applications and Advantages

These insulators are integral to high-voltage transmission lines, providing insulation and support to ensure reliable system operation. They are especially beneficial in polluted environments due to their extended creepage distances and umbrella-shaped designs, which prevent flashover incidents and promote self-cleaning.

Production Process of Glass Insulators

The production process at Jiangxi Huayao Electric Co., Ltd includes raw material mixing, glass melting, shaping, tempering, testing, and packaging. Each product undergoes stringent tests to comply with international standards such as IEC 60383 and GB/T1001.1.

Quality Assurance and Standards

All products meet or exceed industry standards and undergo several tests: dimension verification, displacement checks, locking system, galvanization, thermal shock, mechanical failing load, and power frequency puncture withstand tests.

Packaging and Shipping Information

Jiangxi Huayao Electric Co., Ltd offers industry-standard packaging to ensure the safe delivery of glass insulators. The company maintains a high daily production capacity to meet demand in both domestic and international markets, including Vietnam, Iran, and Algeria.