Corona measurements, voids and life of polyethylene insulated cable

This report covers the tests we have made on polyethylene insulated shielded coaxial cable. It summarizes eight quarterly reports and one final report. Radio frequency cable and triaxial pulse cable have been examined. The Signal Corps must obtain cable from suppliers for various applications. The most critical applications are high voltage ones. It needs to know how long the cable may be expected to live at high voltage but the only information it obtains from the suppliers is the sixty cycle withstand voltage test and the corona voltage. It wants to know what correlations may exist between these measurements, electric strength, and life, as well as what other tests may be necessary.