A
Hello,
I have a problem in hydraulic ratchet (gas turbine frame 5 mark VI),
The problem appears after shutdown or trip. when the shaft reaches zero speed after that the ratchet takes 1 or 2 sequence after that the sequence is not correct when the pump 88HR and 20CS energized again after 10-12 sec the 33hrf energized become {1} and still energized with no shaft rotation and high electric current in 88HR motor and hydraulic ratchet trouble alarm appears. its still energized until I open the breaker of 88HR.
The problem appear after trip or shutdown and gone almost after 2 hours of the problem and after that the ratchet rotate the shaft and the sequence is ok but hydraulic ratchet trouble alarm appear for 3 sec and then become normal.
Appreciate your cooperation with me
I have a problem in hydraulic ratchet (gas turbine frame 5 mark VI),
The problem appears after shutdown or trip. when the shaft reaches zero speed after that the ratchet takes 1 or 2 sequence after that the sequence is not correct when the pump 88HR and 20CS energized again after 10-12 sec the 33hrf energized become {1} and still energized with no shaft rotation and high electric current in 88HR motor and hydraulic ratchet trouble alarm appears. its still energized until I open the breaker of 88HR.
The problem appear after trip or shutdown and gone almost after 2 hours of the problem and after that the ratchet rotate the shaft and the sequence is ok but hydraulic ratchet trouble alarm appear for 3 sec and then become normal.
Appreciate your cooperation with me