This standard specifies the technical requirements and test methods for hollow inflatable line column composite insulators (hereinafter referred to as insulators) for 1000kV AC overhead transmission lines. This standard is applicable to areas with altitudes of 1000m and below, and ambient temperatures between -40°C and 40°C. Hollow inflatable line post composite insulator is composed of insulating core, jacket and end accessories. The insulating core is used to bear the load and consists of an insulating tube filled with insulating gas (nitrogen with an absolute gas pressure of not less than 0.35MPa). The insulating tube is made of epoxy resin impregnated glass fiber, and the jacket is made of high-temperature vulcanized silicone rubber. , the end attachment is permanently fixed on the insulating core.
T/CEC 270-2019 history
2019T/CEC 270-2019 1000kV AC Hollow Inflatable Line Post Composite Insulator Technical Specifications