330kV Composite Suspension Insulator

SH Power provides customized design services according to different voltage levels and environmental conditions. Our technical experts offer comprehensive support—from insulation performance analysis and installation guidance to operation and maintenance advice—ensuring optimal performance under complex operating conditions.

Description

The 330kV suspension composite insulator’s umbrella skirt sheath is made of an organic polymer with low surface energy and strong water-repellent properties. When water falls on the skirt surface, it forms isolated droplets instead of a continuous conductive water film, resulting in low leakage current, reduced risk of local arcs, and decreased likelihood of surface flashovers due to contamination.

Composite cross-arms insulators are designed to reduce line lightning accidents and enhance power supply reliability. They efficiently utilize narrow corridors for high-voltage power transmission, making them suitable for urban grid upgrades. These insulators can lower tower heights and save significant labor, material, and financial resources. Their high bending strength prevents the cascade fractures common in porcelain cross-arms, making them an irreplaceable alternative to porcelain products.

Model	Rated Voltage(kV)	Specified Mechanica Load(kN)	Mark of Connection	Structure height(mm)	Insulation Distance(mm)	Creepage Distance(mm)	Lightning Impulse Withstand Volage	1 Min Power Requency Wet Withstand Voltage
FXBW-330/120(100)	330	120(100)	16	2930	2720	9075	1425	570
FXBW-330/180(160)	330	180(160)	20	2930	2640	9075	1425	570
FXBW-330/240(210)	330	240(210)	20	2930	2560	9075	1425	570

Incorporating the latest research on the water-repellent properties of silicone rubber materials, we have introduced over four types of silicone materials, each with distinct molecular weights, polymerization degrees, and viscosities. This enhances the water repellency, migration, recovery, and durability of the umbrella cover materials.
The hardness of the vulcanized rubber is meticulously controlled within the range of 65-68 (Shore hardness) to ensure that the umbrella cover material possesses sufficient resistance to external deformation.
Through extensive testing, we have determined the optimal ratios between silicone rubber, silica, and aluminum hydroxide.

Key Features

Wide Product Range

Overhead line high-voltage, extra-high voltage, and ultra-high voltage suspension products; high-voltage line post-type products; composite crossarms for distribution networks; composite post insulators for substation busbars and equipment.

Advanced Composite Materials

Manufactured with high-strength epoxy fiberglass cores and high-quality silicone rubber housings, they offer excellent pollution flashover resistance and anti-aging performance.

Lightweight & High Strength

At the same voltage level and mechanical strength class, composite insulators weigh only about 1/7 to 1/10 of ceramic/glass insulators, reducing steel consumption for towers and lines and significantly cutting infrastructure costs.

Excellent Electrical Performance

With a pollution flashover voltage more than twice that of ceramic/glass insulators, they minimize the risk of flashover failures caused by contamination, indirectly lowering operation and maintenance expenses.

Strong Weather Resistance

They operate reliably in harsh environments such as extreme cold, high temperatures, coastal areas, and heavily polluted regions.

Long Service Life

Thanks to an eco-friendly and intelligent manufacturing process, composite insulators offer excellent quality consistency and a service life exceeding 30 years.

Applications and Utility

Transmission lines and substations

Through material innovation and structural optimization, composite insulators achieve an optimal balance of high strength, lightweight design, and long service life. Offering high cost-effectiveness, they are critical components in modern power systems for enhancing line safety and are widely used in transmission lines and substations.

Ultra-High Voltage (UHV) Transmission Lines

Our composite insulators are extensively used in 1000kv,±800kV and other UHV DC and AC transmission projects, providing reliable insulation for critical national power arteries.

Converter and Substations

Composite post insulators serve as the external-insulation support components for all kinds of equipment in converter stations and substations, providing both electrical insulation and structural support for busbars and electrical apparatus.