No.21 (Dec.1997)

Title

• Investigation of Single Unit Flashovers in HVDC Insulator Strings
• Study on Electrical Strength of Suspension Insulators in Steep Impulse Voltage RangeImproved Corona Characteristics of Partially Semiconducting Glazed Suspension Insulators for Use at High Altitudes
• Study on Performance of Semiconducting Glazed Insulators under Simulated Desert Contamination Conditions
• Voltage and Temperature, Distribution along Semiconducting Glaze Insulator String
• Assessment of Basic Contamination Withstand Voltage Characteristics of Polymer Insulators
• Time Variation of Hydrophobicity and Weight of Silicone Rubber Immersed in Water
• Experience with IEC 1109 1000h Salt Fog Ageing Test for Composite Insulators
• Field Test Results of Polymer Insulators
• Comparative Contamination Degrees on Porcelain and Silicone Rubber Insuators in Fields
• Effect of Humidity on Flashover Voltage of Insulators
• Application Effect of Transmission Line Arresters to Tower with High Footing Resistance
• Field Experience of Line Arresters in TEPCO
• Application of Gapless Arrester in Gas Insulated Line Switch
• Remote Sensing System for System for Faulty Insulator Units

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