DIAGNOSTIC METHOD OF CABLE INSULATION DETERIORATION SERVICE LIFE

摘要

PROBLEM TO BE SOLVED: To provide a diagnostic method of a cable insulation deterioration service life capable of confirming the deterioration degree of an insulated cable coated with a polyolefin until the end of the service life, performing deterioration diagnosis for diagnosing the progression degree of deterioration with age and service life diagnosis for predicting the deterioration service life, highly accurately, simply and easily.;SOLUTION: This method for performing insulation deterioration service life diagnosis of the cable by measuring an infrared absorption spectrum of the polyolefin coating the cable is an insulation deterioration service life diagnostic method for determining the absorbance ratio between the carbonyl group absorbance of the polyolefin and the standard spectrum absorbance, and diagnosing the deterioration degree from the change with age. Similarly, the method is also the insulation deterioration service life diagnostic method for estimating the remaining service life of the cable from the end of the service life determined beforehand.;COPYRIGHT: (C)2005,JPO&NCIPI