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Ours is Gas turbine frame-5 machine. During start-up the machine can be started in crank/fire/auto mode or directly auto mode. During crank start-up, diesel engine speed is reaching 1800 rpm and slowly reducing to 1500rpm and hence turbine is unable to reach crank speed i.e 920 rpm or 18% of rated speed.
But once machine is started directly in auto mode, diesel engine is reaching 1800 rpm and after warm-up speed is raising to rated speed i.e 2100 rpm and hence turbine is reaching crank speed and machine could be started.
I want to know whether there is any difference between these two start-ups and how?
Looking forward for your reply
Thanks
But once machine is started directly in auto mode, diesel engine is reaching 1800 rpm and after warm-up speed is raising to rated speed i.e 2100 rpm and hence turbine is reaching crank speed and machine could be started.
I want to know whether there is any difference between these two start-ups and how?
Looking forward for your reply
Thanks