Since the xi 'an "okay cable" Revelations, cable product quality caused the wide attention of the society, to relevant departments by the state council general office organization joint investigation accountability for investigation, and according to the report, has been to the related government departments and subordinate units accountability for 122 people, officials involved in departmental level 16 people, the place class 58 people, at the same time, general administration of quality supervision, inspection and quarantine and the state administration for industry and commerce have organized across the country in the history of the largest special inspection of electric wire electric cable quality supervision and spot checks. Aokai cable event in the cable industry caused by the vibration, so that the vast number of cable people to re-understand the importance of product quality to enterprise life.

The thermal contraction of the cable is unqualified and exposure rate very high in recent years the national quality inspection department testing project, according to the provincial bureau of quality and technical supervision announced a quarterly special spot check of power cable products, selectived examination by the provincial 49 samples of 49 power cable enterprise production, spot check result shows that there are 10 samples is unqualified, the insulation heat shrinkable pilot project unqualified samples there are 5, accounting for 50%.

Therefore, as a cable manufacturer, it is necessary to analyze the mechanism and causes of excessive thermal shrinkage of insulation in the manufacturing process and take appropriate preventive measures to ensure that the thermal shrinkage index of silane crosslinked polyethylene insulated power cable meets the requirements of relevant products.