أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
hello,
we have 02 critical speed (turbomachine category 4), in the transitional phase between start speed (0 rpm/min or rotor bearing speed), and permanent phase (3000 rpm) ,at :
1- Approx 1000 rpm/min +/- 100 rpm/min
2- Approx 2000 rpm/min +/- 100 rpm/min
NB: 50HZ + absolute vibration
Kind regards.