How To Maintain Composite Insulators

The key points for maintaining composite insulators are as follows:

Regular Inspection: At least once a year, focusing on checking for damaged sheds, exposed core rods, and aging sheaths (replace if cracks ≥2mm).

Cleaning: Clean areas with pollution level III or higher every six months, avoiding the use of corrosive solvents.

Hydrophobicity Test: Use the water spray classification method (HC value ≥3 is acceptable).

Electrical Testing: Perform infrared thermography (temperature difference >2K is abnormal) and ultraviolet imaging detection every 3 years (corona discharge requires treatment).

Maintenance of composite insulators also requires attention to corrosion of metal accessories and sealing checks. Metal components should be treated with anti-corrosion measures every 2 years; poor sealing can lead to moisture absorption of the core rod. Our company's rod-shaped composite insulators are made of silicone rubber (arc distance 320mm), have anti-UV aging properties, and a mechanical load capacity of 10kN, making them suitable for long-term use in high-voltage lines.