EPRI ߞManufacturers 500/550 kv cable research project cable C ߞSummary of field test performance at Waltz mill

General performance of the 550 kV prototype cable system during long-term accelerated field tests at Waltz Mill is summarized, based primarily on the record of periodic power factor measurements of system components through a range of overload temperatures. Hazards to system stability imposed by extreme overload service are discussed in relation to thermo-mechanical strains and dielectric loss heating effects. Stable field performance is substantiated by results of Laboratory examination and tests of returned cable and accessories.