目前中国本土伺服系统技术尚未达到国际领先水平，还是依靠引进日系，欧系等进口伺服系统为主，而进口伺服系统与中国电网不匹配(中国工业用电是三相380V，而进口伺服系统要求三相200V)，为了让伺服系统正常稳定运行，中间必须匹配一台380V转200V三相变压器作电压转换。
       The present domestic servo motor technology is not reaching the international leading level, so what we are taking are mainly introduced from Jap-an, Europe etc. But due to the different voltage bet-ween the imported servo motor (200V) and China Industrial Voltage (380V), therefore, the 380V to 200V transformer is required to work in-between for ensuring the normal operation for the imported ser-vo motor.