T/CEEIA 320-2018 High-altitude Fast Transient Voltage Transients (VFTO) Test Technical Guidelines
T/CEEIA 320-2018 High-altitude Fast Transient Voltage Transients (VFTO) Test Technical Guidelines
Basic Information
Scope
Scope: This standard specifies the general requirements, test voltage waveforms, test equipment, test voltage values, and pressure test and test criteria for conducting VFTO on-site withstand voltage tests on gas-insulated metal-enclosed switchgear (GIS) equipment with voltage levels of 363 kV and above. This standard applies to high-altitude areas above 1,000 m where GIS equipment is fully or partially installed with gas-insulated metal-enclosed switchgear. GIS equipment with voltage levels below 363 kV may refer to this standard for guidance. Other regions may use this standard as a reference for similar applications. Main technical content: This standard specifies the general requirements, test voltage waveforms, test equipment, test voltage values, and pressure test and test criteria for conducting VFTO on-site withstand voltage tests on gas-insulated metal-enclosed switchgear (GIS) equipment with voltage levels of 363 kV and above. This standard applies to high-altitude areas above 1,000 m where GIS equipment is fully or partially installed with gas-insulated metal-enclosed switchgear. GIS equipment with voltage levels below 363 kV may refer to this standard for guidance. Other regions may use this standard as a reference for similar applications.