temperature rise as indicated by RTD would be 76.5 oC. At
the time of the test the return air from the air-to-water heat
exchangers was 29 oC so that the total temperature by RTD
was 105.5 oC. This was achieved with a river water
temperature of 15 oC in August. The revised capability
curve is shown in Figure 6 with a maximum power output
of 90 MW at unity power-factor. Overexcited the limit was
determined by the split phase protection, and under-excited
by the 600 A per circuit limit. The unit was returned to
service with these limitations in August 1992.