A
gas turbine mark 5, before fire, it tripped by startup fuel flow excessive
At 20%
1- fuel oil bypass valve not moving (0%) and this mean 100% flow.
2- demand still -25% (0%) because 20FL SIGNAL STILL NOT COMING.
3- SERVO CURRENT FEEDBACK STILL HIGH (70)
NOTE
I MEASURE THE VOLTAGE -8 FOR ALL THREE COILS BEFORE START
can you please till me where can i find the problem cause
At 20%
1- fuel oil bypass valve not moving (0%) and this mean 100% flow.
2- demand still -25% (0%) because 20FL SIGNAL STILL NOT COMING.
3- SERVO CURRENT FEEDBACK STILL HIGH (70)
NOTE
I MEASURE THE VOLTAGE -8 FOR ALL THREE COILS BEFORE START
can you please till me where can i find the problem cause