Ключевые слова:
Electrical resistivity, Oils, Sheathed cables, Permittivity measurement, Cable sheaths, Corrosion tests, Communication equipment, Electrical insulation, Acid number, Low-temperature testing, Chemical analysis and testing, Electrical insulating materials, Brittleness, Acidimetry, Test methods, Optical fibres, Direct current, Temperature, Electrical testing, Separation, Solid electrical insulating materials, Insulated cables, Electric cables, Resistance measurement, Mechanical testing, Filling, Drop-point determination, Heating tests