Title :
EPRI report-characterization of cable insulation materials by dynamic mechanical spectroscopy
Abstract :
A project that is part of a broad effort to apply nonelectrical diagnostics to the study of aging-induced changes in solid dielectric cables is described. The technique of dynamic mechanical spectroscopy is explained. The goal of the work described was to determine whether aging in high-molecular-weight polyethylene (HMWPE) or crosslinked polyethylene (XLPE) insulated distribution cable insulation could be detected by solid-state rheological measurements. Insulation from seven HMWPE and five XLPE cables were studied. The results and their interpretation are summarized. They suggest that a more detailed study of a number of service-aged and laboratory aged XLPE´s, tree-resistant XLPEs, and EPR would be highly beneficial.<>
Keywords :
ageing; cable insulation; insulation testing; organic insulating materials; polymers; HMWPE; XLPE; aging-induced changes; cable insulation; crosslinked polyethylene; dynamic mechanical spectroscopy; high-molecular-weight polyethylene; nonelectrical diagnostics; solid dielectric cables; solid-state rheological measurements; tree-resistant XLPEs; Aging; Cable insulation; Cables; Dielectric materials; Dielectric measurements; Dielectrics and electrical insulation; Polyethylene; Rheology; Solid state circuits; Spectroscopy;
Journal_Title :
Electrical Insulation Magazine, IEEE
