CURRENT TRANSFORMER CHANGING METHOD WITH EXTRA TRANSFORMER

摘要

A method for replacing a pole transformer in an uninterruptible state is provided to reduce a device cost by excluding a phase change bypass device or an uninterruptible transformer. An additional hanger(11) is installed in an electric pole(13). An extra transformer(8) is hung on the hanger. The extra transformer is installed in a transformer rack of the hanger. The capacity of the extra transformer is larger than the capacity of the replacement object transformer. The extra transformer is connected in parallel with the replacement object transformer. The load of a low voltage wire(2) or a service wire is transferred to the extra transformer. The replacement object transformer is replaced in the uninterruptible state.