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How is exhaust spread calculated by speedtronic?
What is spread 1 ,spread 2, spread 3?
What is spread 1 ,spread 2, spread 3?
M
M M Ahsan
TTXSP 1 or spread 1 = Temperature Difference between the highest and the lowest exhaust T/C reading.
TTXSP 2 or spread 2 = Temperature Difference between the highest and the second lowest exhaust T/C reading.
TTXSP 3 or spread 3 = Temperature Difference between the highest and the third lowest exhaust T/C reading.
- M M Ahsan
TTXSP 2 or spread 2 = Temperature Difference between the highest and the second lowest exhaust T/C reading.
TTXSP 3 or spread 3 = Temperature Difference between the highest and the third lowest exhaust T/C reading.
- M M Ahsan
M M Ahsan,
One needs to be <b>VERY</b> careful about this. GE are using some different combustion monitor algorithms for different machines. What used to be pretty standard for all Frame sizes, is now dependent on many different factors.
One really needs to look at the combustion monitor algorithm (usually called something like TTXSPVn, where 'n' is a number that denotes the version of the algorithm) to see exactly how it's calculated for their particular machine.
One needs to be <b>VERY</b> careful about this. GE are using some different combustion monitor algorithms for different machines. What used to be pretty standard for all Frame sizes, is now dependent on many different factors.
One really needs to look at the combustion monitor algorithm (usually called something like TTXSPVn, where 'n' is a number that denotes the version of the algorithm) to see exactly how it's calculated for their particular machine.
K
KA
when GT will trip on exhaust spread
and how allowable spread is calculated by controls system
and how allowable spread is calculated by controls system
S
Sent
what is the benefit of 3 spread?
in our turbine new install by ge frame 5 MS5001 PA
in the control system no found the spread two and three, only found allowable spread.
in our turbine new install by ge frame 5 MS5001 PA
in the control system no found the spread two and three, only found allowable spread.
M
M M Ahsan
Hi KA and Sent,
If you Are using mark 5 speedtronic control system, then you should be able to find the rung in the mark 5 manuals which calculates spread. Check the block named TTXSPV4 (combustion spread monitor), rung no. 65, in seq_trb2 of mark 5 manual.
-M M Ahsan
If you Are using mark 5 speedtronic control system, then you should be able to find the rung in the mark 5 manuals which calculates spread. Check the block named TTXSPV4 (combustion spread monitor), rung no. 65, in seq_trb2 of mark 5 manual.
-M M Ahsan
