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Showing 1 to 4 of 4 for “"Insulation defects."”.
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The excitation of UHF signals by partial discharge in gas insulated substations
… insulated substations (GIS). PD is indicative of defects in the insulation system and by using couplers mounted at intervals along the GIS, the corresponding bursts of UHF signal can be extracted. This is the principle of the UHF monitoring technique used for detection and identification of …
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Radiometric partial discharge characterisation
… of most failures normally is found in electrical insulation, which is an essential component in all electrical systems especially in power equipment such as transformers and circuit breakers, the cost of which is very high. Before the insulation fails, there are manifestations of this condition, …
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Research on Vibration-AE Fusion Detection Technology for Metal Particle Defect in GIS under Electromechanical Coupling Condition
… and there is a correlated influence between its insulation and vibration conditions, making insulation defect and mechanical defect the two main causes of GIS failures. For example, metal particle contamination is a typical insulation defect related to mechanical vibration, while AE and vibration …
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Lifetime predictions of medium voltage motor coil insulation when operated by PWM from SiC inverters.
… of the machine lifetime including the winding insulation. To this end, it has already been observed that traditional understandings of insulation lifetime originally developed for Si inverter operation are ill-equipped for the greater stresses provided by WBG inverters especially in …