Search results

What is nape ?? Never seen a "P" card with different pin arrangement, do ypu have picture of both ?

I don't think you have tried. There are many places on the net selling or repairing MK VI cards.

Where have you been getting the replacement TCs from ? When you changed the first failure did you compare what you removed with the replacement before you installed.?

Yes, that is exactly what I do as well, mark at the swagelock. Roughly what is the failure rate of your TC ? Have you examined the failed TC to see how it failed?

" The reason I feel the wheel space TCs are performing fine is that there are other observations as well on the machine " " I think you are very much right on the high probability of common mistakes during the handling & installation of the wheelspace thermocouples. " It took some time but now...

So, is someone on your side trying to analyze what happened during your overhaul? Who conducted the overhaul?

Can you give Exhaust Temp. Spread (TTXSPL!) at 20MW before and after. What I am trying to get an answer to is the difference in Temp between 1st. Stage Aft 1 vs 2. before and after overhaulthis could be :- Badly installed TC Badly installed 1st. stg nozzle High exhaust Temp. Spread (Bad...

Usually it can be caused by the position of the nozzles in the turbine causing excessive or reduced air flows. I don't know how you are sure that the TC "are fine" , it is fairly easy to check their positions first before re-opening the machine

Did you remove/replace any wheelspace TC during the overhaul? 1st. Stage Aft2 & 2nd.Stage Fwd1 don't look like they are reading so well, it is quite easy if you removed any TC to not get it back fully in the tube

Can we see W/space Temps before the overhaul at roughly the same load, can we also see before/after clearances particularly around 1st/2nd stage

Hallelujah !! Hallelujah !!

I don't think it is an AC Turning Motor it is an AC Starting Motor which should have the HP capability to Crank the machine itself to Firing Speed and on up. Can MOB please look for a Control Spec. to help or go look at the nameplate data for the Starter.

Hi CSA, I'm fairly familiar with this system. It has a large AC Starting motor (Maybe 800-1000 HP 5-10Kv) and a small turning gear motor through a small gearbox that will be used to rotate the shaft on cooldown, it will cut in before the shaft comes to rest and keeps the shaft rotating at a very...

Bye

Have you looked at the HP rating of the Starter vs the turning gear . I don't have a control spec. handy, do you have one? Do you understand what Horse Power is?? Try starting your car with a rubber band instead of the Starter !!

Simply, the answer is NO. The Turning gear motor is only to keep the shaft rotating when it is rotating. not as a starter motor !!

Thanks CSA, safe, healthy and bored. I feel sorry for people who have been put in situations where they are unqualified for what they are doing, it is the main thing that nearly drove me away from the business a good few years ago. Managers want megawatts and as cheaply as possible then wonder...

Have you looked at your P&IDs ?

Yes, you are correct, it is a simple way to calculate speed at 60 pulses/revolution

Read the manuals