This 10-20kV dual-voltage epoxy resin casting dry-type transformer can be connected with both 10kV and 20kV voltage. It can be used as 10kV power transformer or 20kV power transformer as the service conditions require. It means that one transformer realizes the functions of two types of power transformer, therefore customer's investment is greatly reduced. They are especially applied in the regions and countries where the voltage of power network needs to be upgraded from 10kV to 20kV. This series dual-voltage transformer manufactured by Pearl Electric has passed all routine tests, type tests and special test carried out by China National Transformer Quality Supervision Testing Center and ranks first in China in respect of technology.