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vedprakash rao

Can one TCEA in MarkV Simplex panel trip the Turbine?

vedprakash. rao @ gmail. com
 
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CSA

If it's configured properly, no. The three TCEAs are independent of each other and it should take two of the three to detect an overspeed condition or a high rate of change of speed (acceleration or deceleration) to initiate a trip. One TCEA detecting either of these conditions by itself should only result in Diagnostic Alarms. To clear the Diagnostic Alarms on a TCEA after the problem has been resolved, it's necessary to initiate a Master Reset of the unit from the operator interface or <BOI>.

What Diagnostic Alarms were present before the unit tripped?
 
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