K
HI CSA,
Our gas turbine is GE 6FA Mark V Control system. During our last startup once gas turbine reached FSNL, we given stop command without synchronize the breaker. Turbine starts Coasting down. but once reached 90% of speed turbine stays at 90% of speed for 8 Minutes. After 8 minutes turbine starts coasting down. Why 8 minutes holding required at 90% of speed while gt in coasting down? IGV position 48 to 33 dga.
Our gas turbine is GE 6FA Mark V Control system. During our last startup once gas turbine reached FSNL, we given stop command without synchronize the breaker. Turbine starts Coasting down. but once reached 90% of speed turbine stays at 90% of speed for 8 Minutes. After 8 minutes turbine starts coasting down. Why 8 minutes holding required at 90% of speed while gt in coasting down? IGV position 48 to 33 dga.