Therefore, it is very likely that the increasing heat would cause the growth of conductivity of insulated paper. The dielectric strength becomes weaker and weaker so that it cannot support the voltage at the edge of the oil tape and lead to electrical breakdown between adjacent conductors. 增加的热量导致绝缘纸电导率增长,绝缘强度变得越来越弱,以致不能支撑油浸纸带边缘的电压,导致邻近导线间电击穿。