A high-voltage (HV) generator of an X-ray device comprises a high-voltage measurement device. The measurement device comprises a compact component integrating both the measurement resistor and the capacitors enabling both the protection of said resistor and the elimination of the parasitic effects of the generator. The capacitors are made on insulating plates preferably made of ceramic, a succession of metallized strips and insulating strips. The plates are positioned relative to one another in such a way that the capacitors are discrete and series-mounted. To do this, between two successive plates, the metallized strips of the bottom plate overlap two metallized strips of the plate directly above.