TG-13 governor is not taking over or controlling the speed once the steam stop valve is opened. Turbine speed is increasing beyond normal speed and tripping on overspeed trip rpm.
TG - 13 and 17 governers are droop type governers. if you have this problem of governer not taking control , this may be due to the excessive droop in the governer. Open the top cover and decrease the amount of droop setting. Normally the droop setting is set at 4% to 6% of speed. Hope this solves your problem
TG-13 Governor
Re: TG-13 Governor
