IEC 61851-21:2001 电力公路车辆的电气设备.电动车辆感应式充电系统.第2-1部分:传导连接于交流/直流电源的电动车辆要求 Electrical equipment of electric road vehicles - Electric vehicles conductive charging system - Part 2-1: Electric vehicle requirements for conductive connection to an a.c./d.c. su