... before being released to the market place, include 50%load,75% load,100% load,110% load and all protection fuctions (over speed, high water ... )Power factor Between0.8~1.0 lag;2)From no load to full load,any steady load;3)Speed droop variation uder4.5%;Frequency ... 0-100%,Frequency/Speed Droop Ration within5%;2)Load from 25-100%,any steady load Frequency/Speed undulation within 0.25%.Certification3) ...