The rotary generators or converters use the mains electricity to move a motor that in turn acts on another that works as a generator. This generator allows to obtain voltages and frequencies different from the input, with the most common being an output voltage of 42 V and a frequency of 200 Hz. These converters are intended for the feeding of vibrating needles for compacting concrete.
Depending on the power they can supply, they incorporate a series of power sockets to be able to connect one or more vibrating needles. They can be connected to single-phase or three-phase networks and with input frequencies of 50 or 60 Hz. de 50 o 60 Hz.