The SolidDrive 10kV/20MW HV variable-frequency speed drives passed 28 type tests of China National Center for Quality Supervision and Test of Electrical Control and Distribution Equipment, and the test results conform to the national and international standards including GB12668.4-2006/61800-4 2002 “Adjustable Speed Electrical Power Drive Systems—Part 4: General Requirements — Rating Specifications for AC Power Drive Systems Above 1,000 V Not Exceeding 35 kV”. After passing the above tests once for all, and in January received a test report 2011.