摘要: A short presentation of the main characteristics and peculiar aspects RFP configuration is given. Confinement data from a number experiments, which have been operated after 1980, are recalled; emphasis on results MST RFX, two largest existing devices, with current capability 2 MA, in first years has at low currents (350+700) kA, mainly to compare different modes creating configuration, study field error effects plasma wall interaction, improve optimize, particular by control, discharge parameters. The reported line expectations.