Apparatus and procedures for evaluating dielectric properties of wire enamels in controlled environments

Today´s electrical industry requires insulating material that function effectively in a variety of atmospheres and over wide ranges of temperature. Examples of atmospheres commonly encountered, in addition to air, include vacuum, oxygen, hydrogen, electronegative gases such as sulphur hexafluoride (SF6) and refrigerants such as CCl2F2, and oils, both petroleum and synthetic. To fulfill these needs, organic chemists and insulation engineers have developed a variety of new insulating materials, each of which has unique advantages. The design engineer faces the challenging problem of matching the proper insulating material to the requirements of a particular application.