Recent content by Lee Jeong Hun

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  1. L

    Solving GT 7FB Exhaust Spread Tripping(please help me!!)

    We have 7FB Gas Turbine Machine.. Our Rated Power output is 240MW nowadays We have combustion problem!! Our Gas Turbine machine was Tripped twice in a row By Exhaust Spread Trip during Starting up to FSNL(Full speed No Load) After twice Tripping from exhaust Spread Trip, We try third gas...
  2. L

    Exciter tripping by crowbar trip

    Thanks a lot!! I learned many things from you I really appreciate you
  3. L

    Exciter tripping by crowbar trip

    Thank
  4. L

    Exciter tripping by crowbar trip

    Have anyone known about the crowbar trip which is issued by ex2100e system It can cause exciter to trip by initiating " 94EX-1 " I saw this through ex2100e manuals It prevents high voltage from generator pole slipping So i have two questions ! (1) What is " pole slipping "? (2) how " the...
  5. L

    How to Caculate FSRT

    Thank you i really admire you I practed reading the manuals over and over Your suggestion is so good!!
  6. L

    How to Caculate FSRT

    Wow. How did you know the Tfire meaning? I couldn't think that it is the firing temperature after passing through first stage blade!! You're really great Did you find it through GE manuals or TA(technical advisor) ?
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    How to Caculate FSRT

    I Have a Question for 7FB Gas turbine machines We have a TFIRE Factor It's maybe ARES[6] Array. but we don't know how can be caculated for TFIRE? I guess its' related with ARES Arrays like CPDABS, CTD, TTXM, DWATT, CTIM Is there anyone have a information about TFIRE Factor
  8. L

    How to markvie pdio recognize digital input

    Oh i got it. I really aprreciate you
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    How to markvie pdio recognize digital input

    I have a question using markvie pdio card How to pdio recognize digital input For example limit switch , pressure switch Our digital input voltage is 125vdc wetting system When i check the voltage the pdio terminals, but i always check the + 62.5vdc, -62.5vdc even if the switches are off...
  10. L

    CMS check out problem

    Hi our markvie system has a CMS(Configuration Management Server) But we have problems We have a lot of controllers like G1 S1 H1 BOPM1 etc.. But we cant check out the G1 controllers We tried to check out the G1 controllers But the lock screen doesnt change And we failed to check out G1 I really...
  11. L

    Lube Oil Pressure Low when motor transfers

    We just changed the period when two pumps are running. So we solved the problem i really appreciate your help
  12. L

    Lube Oil Pressure Low when motor transfers

    How can you solve the problem? You just replaced the discharge check valve which is located on pump b ?
  13. L

    Lube Oil Pressure Low when motor transfers

    Not at all. it always happened switching from a to b
  14. L

    Lube Oil Pressure Low when motor transfers

    Our mechanical team replaced new check valve but the problem isnt solved Should we check the drain valves?
  15. L

    Lube Oil Pressure Low when motor transfers

    Hi we have 7FB gas turbine on our site But We have issues with 88QA lube oil pump We have two lube oil pumps When we change 88QA-1A to 88QA-1B lube oil pump Lube oil pressure switch low(L63QA1AL) Happens for 3 seconds So we test lube oil pressure switch But it's working properly at...
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