EUROLAB, together with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of CIGRE WG C4.303 test. This standard aims to provide tools for selecting and sizing outdoor insulation for polluted conditions, taking into account the wide variety of available materials and insulator types and desired performance levels.
Explains the general principles and includes details on sizing for AC. The appendices provide detailed information, worked examples, and a laboratory contamination test method recommendation for polymeric insulation.
IEC 60507 is not relevant to composites as the hydrophobic surface of the polymeric material prevents uniform coating of contaminants for solid layer testing. The fouling performance of the silicone insulator was investigated with a CIGRE Round Robin Method (CIGRE WG C4.303).
Pre-treatment of the samples with dry kaolin powder was followed to prevent pilling of the contaminant slurry on the insulator sample. In the current research study, the insulation performance of 66 kV polymeric insulators with and without a recovery period (post-pollutant coating) was analyzed according to CIGRE WG and IEC 60507 recommendations. 50% Flashover Voltage (%U50) determined by Up-&.
The result from the study is consistent with the results of the CIGRE Working Group.
Discussions were made on the hydrophobicity loss, recovery and transfer properties of polymeric insulators.
EUROLAB assists manufacturers with CIGRE WG C4.303 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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