... ,Name Three-phase full-wave ac/dc fluorescent magnetic powder flaw detection machine2,Model CZQ-4000B,Design standard & basis1,Equipment design and ... AC, 0 --- 4000A, RMS three-phase full-wave ac,Timely setDC, 0 --- 4000A, RMS three-phase full-wave dc,Timely set4,Longitudinal ... current AC, 0--20000AT, RMS three-phase full-wave ac,Timely setDC, 0--20000AT, RMS three-phase full-wave dc,Timely set5, ...