Totally-enclosed horizontal rotating electric machine

A totally-enclosed horizontal rotating electric machine in which a rotor horizontally arranged and a stator arranged at an outer circumference side of the rotor are hermetically sealed in a main frame, and the rotor and the stator are cooled by circulating refrigerant gas, which is encapsulated in the main frame, through a refrigerant passageway, and water-cooled heat exchangers for cooling the refrigerant gas are provided on the way of the refrigerant passageway;

• wherein
• the heat exchangers are respectively arranged in a longitudinal direction at each of positions neighboring both left-right end portions at a front side and both left-right end portions at a rear side of the main frame, in a state where the main frame is viewed from a side-surface direction orthogonal to an axis line of the rotor, and a feed-water inlet and a drain outlet of cooling water are provided at an upper side of the heat exchangers.