О. TRETIAK , O. SHUT, M. TRIBUSHNOY ANALYSIS OF HEAT STATE OF HYDROGENERATOR SPIDER -MOTOR OF HIGH POWER AT SPECIAL CONDITIONS OF OPERATION ABSTRACT In given article the study of the basic elements of Hydrogenerators of vertical design version namely the stator, the rotor including the bush, spokes, rotor rim, poles and shaft extension, guide bearing with lubrication and cooling, the thrust bearing with lubrication and cooling, braking and lifting device of the rotor with pipe lines systems, high pressure pump, braking shield, with top and bottom overlap with connection and assembly elements, ventilation and cooling system of Hydrogenerator-motor including air coolers. It is indicated to impossibility of the direct task solving for the design elements that are under action of circulation currents. Solving of the reverse tasks for large design elements of Hydrogenerator is