Monitoring of High Voltage Line Insulators

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High voltage lines and substations are replacing conventional porcelain insulators by crimped metal-composite electrical insulators due to the hydrophobic nature of their silicon surface, their insensitiveness to dynamic loads such as short-circuits or earthquakes, and their light weight compared to porcelain which facilitates their handling, transport and installation. Insulators are subjected to bending forces that generate longitudinal and transverse-shear cracks that are generally initiated in the composite material.

Physical Acoustics’ Industrial Express chassis is an Acoustic Emission system that allows crack’s nucleation, propagation and localisation of the source. The system can operate with a maximum of 96 acoustic emission sensors simultaneously.