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