Hello Team,
I am experiencing a peculiar issue on a GE Frame 5 machine using MARK VI (TMR) control system. The unit was overhauled (repaired- The exhaust diffuser had a catastrophic failure) ,prior to this the issue was never experienced.
When the unit is started to FSNL there is no fluctuation in the vibration reading on the HMI or at local(Handheld vibation sensor has been used to confirm it) , but immediately the unit is synchronized and the breaker closed the Vibration reading(Load gear, Generator -NDE and DE) start spiking.
the Loadgear vib sensor= Vitec 4033-400
Gen NDE /DE- Metrix 5485c
We have been able to ascertain that ;
1-There is no physical vibration on the turbine,
2-The vibration spike starts only when the generator breaker has been closed., immediately it is opened the fluctuation stop. Hence the conclusion that there might be magnetic ,voltage or some sort of interference on the vibration sensors
Has anyone experienced this, or have any solutions??
I am experiencing a peculiar issue on a GE Frame 5 machine using MARK VI (TMR) control system. The unit was overhauled (repaired- The exhaust diffuser had a catastrophic failure) ,prior to this the issue was never experienced.
When the unit is started to FSNL there is no fluctuation in the vibration reading on the HMI or at local(Handheld vibation sensor has been used to confirm it) , but immediately the unit is synchronized and the breaker closed the Vibration reading(Load gear, Generator -NDE and DE) start spiking.
the Loadgear vib sensor= Vitec 4033-400
Gen NDE /DE- Metrix 5485c
We have been able to ascertain that ;
1-There is no physical vibration on the turbine,
2-The vibration spike starts only when the generator breaker has been closed., immediately it is opened the fluctuation stop. Hence the conclusion that there might be magnetic ,voltage or some sort of interference on the vibration sensors
Has anyone experienced this, or have any solutions??