In particular, porcelain disc insulators are most often specified for EHV, UHV and HVDC transmission lines with high reliability through accumulated technology and excellent long-term performance as well as suspension insulators. 

Designed and manufactured to give unparalleled performance and reliability in the field, our suspension insulators continue to perform successfully around the world.
Available for any voltage and contamination level by careful selection and design, they maintain both their electrical and mechanical strength over a long period of time without deterioration. Suspension insulators are also available with semiconducting glaze for even better contamination and television interference performance.

Porcelain disc insulators semiconductor:
Our semiconducting glazed porcelain disc suspension insulators have set the standard for anti-contamination performance and long-term reliability. After over 30 years of research, development and field-testing, we have produced insulators that have a much higher contamination withstand voltage performance. Our low profile, solid core design lasts far longer in high contamination areas and eliminates costly maintenance, such as insulator washing and TV and radio interference. It features uniform surface drying and voltage distribution to prevent flashover, as well as dry-band arc suppression.

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