The manufacture technology of equipoential shield in power transformer is introduced. Two faults are analyzed. The method to diagnose faults of equipotential shield is discussed.

• 摘要介绍了电力变压器“等电位屏”的制作工艺，对其发生的两起事故进行了分析，对判断“等电位屏”故障的方法进行了探讨。