The operational experience of powerful turbo-generators (TG), which have been in operation for a long time, has shown that the stator core suspension assemblies are damaged most intensively. Long-term operation leads to mechanical wear of the mating surfaces of the laminated core and suspension elements, operation causes disturbances in the connections between the elements of the fastening system: the appearance of cracks in the welds; to unscrew nuts and breaks of necks of tie prisms; to clogging the internal volume of the generator with wear products. As a result, the insulation of the stator and rotor windings are destroyed, the windings can short-circuit. In this regard, the effect of electromagnetic loads of TG on the elements of fastening the core to the body (on the clamping prisms) it is necessary to be able to determine. Studies should be conducted in three dimensions, especially for non-nominal regimes in which TGs currently operate.