Insulator composite suspension 515 mm for IV zone Etipo ETI Polam CS70EE20n

Insulator composite suspension 515 mm for IV zone Etipo ETI Polam CS70EE20n is a composite suspension insulator designed for use on overhead medium-voltage lines in IV pollution zones. With a 515 mm overall length it provides electrical insulation and mechanical support for conductors, helping to maintain clearances and reduce the risk of flashover in contaminated environments. The insulator is intended for installation on distribution networks, repair work and new-line projects where resistance to environmental contamination and consistent mechanical performance are required.

Advantages

The composite construction combines a polymeric housing with a core that ensures lightweight handling and reduced risk of shattering compared with ceramic alternatives. The unit is rated for operation in IV pollution zones, offering improved surface performance under heavy contamination and wet conditions. Its compact 515 mm profile simplifies mounting and minimizes additional loading on supporting structures while providing the necessary creepage distance and mechanical strength for its intended applications.

Suitable for

• Insulation and mechanical support of conductors on medium-voltage distribution lines
• Replacement and repair of existing suspension fittings on overhead networks
• New-line installations in areas with high pollution levels (IV pollution class)
• Sites requiring a lightweight, non-ceramic suspension insulator

Key specifications

• Overall length: 515 mm
• Design pollution class: IV (suitable for heavily contaminated environments)
• Application: suspension insulator for overhead medium-voltage lines
• Material type: composite/polymeric housing with internal core
• Function: electrical insulation and mechanical support of conductors

How to use

Mount the insulator following standard overhead-line installation practices and local regulations. Ensure correct orientation and secure mechanical connections to the supporting hardware and conductor fittings. Verify required creepage distances and mechanical clearances before energizing the line. Inspect all mechanical interfaces for proper torque and anti-corrosion protection where applicable. After installation, perform routine checks for integrity of the polymer housing and fittings, especially in the first weeks of service when initial contamination may occur.

Usage recommendations

For reliable long-term performance, install the insulator in accordance with manufacturer guidelines and national grid codes, and include it in periodic maintenance inspections focusing on surface contamination, bird or insect deposits, and mechanical wear. In heavily polluted coastal or industrial locations, consider routine washing or prescribed cleaning cycles to maintain insulation performance.