The Electrical Insulation Property of PTFE Cannula in High Elevation

Abstract:

The polytetrafluoroethylene (PTFE) with the good dielectric property is a kind of nonpolar material. Made from the PTFE, the cannula has the high electrical insulation performance. This cannula can be applied to the equipment which requires for the high electrical insulation. There are 3 kinds of power-frequency voltage resistant experiments on PTFE cannulas with the inner diameter and outer diameter of 0.55/1.35, 0.7/1.5, 0.96/1.6, 0.46/0.96, 1.5/3.0 in the 1970m elevation. The PTFE cannulas are tested at the 85kV power-frequency voltage with the pure condition, the humidity condition, and the polluted condition separately in 1 minute. The result induced that the PTFE cannula did not be destroyed in all of the above experiments with no puncture sound, no smoke, no flashover and no burning. The insulating quality of the PTFE cannula is satisfied with the insulation requirement of the 85kV, i.e., the pollution level I.

• Periodical: Advanced Materials Research (Volumes 516-517)
• Pages: 1545-1550
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.516-517.1545
• Online since: May 2012
• Authors: Xu Zhang, Chuan Li, Yu Hui Li, Hong Wei Yang, Jian Fa Li
• Keywords: Electrical Insulation Performance, High Elevation, Pollution Level I, Power-Frequency Voltage, Power-Frequency Voltage Resistant Experiment, PTFE, PTFE Cannula

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