El Cobano Hydroelectric Plant

MODERNIZATION AND REPOWERING OF TWO ELECTRIC GENERATORS, FROM THE CH EL COBANE OF THE EPS GENERATION II

SCOPE OF WORK

• Design and Manufacture of New Coils
• New core design

GENERMEX designed, manufactured and installed a new stator core and a complete winding repowering the two units from 26 to 30 MW.

GENERMEX installed the new core using a continuous stacking technique that allows concentricity with respect to the rotor, avoiding variations in the between iron and magnetic imbalance. This continuous stacking technique prevents collapse or rippling of the stator lamination due to thermal expansion or magnetic force.

The new stator core is designed so that the maximum temperature rise does not exceed 55 degrees centigrade measured by thermocouples or thermometers over an ambient temperature of 40 degrees centigrade, while the generator is operating at rated power.