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  1. P

    GT Trip with HRSG Diverter Damper Closed ?

    hassan.faraz123... Welcome to Control.com. Short Story. One Plant I worked in called their "HRSG" a "Flue Gas Cooler" to avoid paying Energy Taxes. The Authorities of the country in which it was located issued a heavy fine instead! The Limit-Switch wiring issue was solved using MI (Mineral...
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    Steam tripping after one minute of the GCB closed and the first alarm is STG power factor

    Ghaith123... Welcome to Control.Com Please provide Alarm messages, for all operating machines before and after tripping of the machine in question! Regards, Phil Corso
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    CONVERSION OF A DOL MOTOR TO VFD STARTER

    alitks... Are the motor(s) equipped with "Under-Voltage" tripping relays? Regards, Phil Corso
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    Low Performance of Gas turbine after major inspection

    Sirdee... What is (are) the rated MVA or MW of the Generator(s)? Regards, Phil Corso
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    Low Performance of Gas turbine after major inspection

    Sirdee Welcome to Control.Com! How much is "Slightly"? Regards, Phil Corso
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    Vibration trip logic for GE frame 9E

    Any more wanted?
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    Vibration trip logic for GE frame 9E

    Hassan Abdullah Round 4 Regards, Phil Corso
  8. P

    Vibration trip logic for GE frame 9E

    Hassan Abdullah Round 3 Regards, Phil Corso
  9. P

    Vibration trip logic for GE frame 9E

    Hassan Abdullah Round 2 Regards, Phil Corso
  10. P

    Vibration trip logic for GE frame 9E

    Hassan Abdullah Round 1 Regards, Phil Corso
  11. P

    Motor Star/delta

    Mehboob What are the Nameplate parameters of each motor? Typical data: HP or kW, Volts, Amperes, RPM, Hz, # Phases. Regards, Phil Corso
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    Vibration trip logic for GE frame 9E

    Attn: Moderator, David2 What is the maximum file-size that can be attached? Regards, Phil Corso
  13. P

    Vibration trip logic for GE frame 9E

    Hassan Abdullah 2 of 2 should never be used! Regards, Phil Corso
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    high voltage on genset

    Tonka... You mentioned large Capacitors. They don't show up in the drawing. When an AC generator is connected to a large capacitance load its terminal voltage exceeds that provided by its own excitation. Can you you see a sneak path that wasn't there when the system worked well? Phil
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    Generator Bearing Temperature rises with increase in Excitation

    Moizfarooqui... In 1980 I was in the EXXON Chemical Plant in Daharki. Wrote a 24 page Report on the plant's early problems. New topic: You should do something about increasing the 13.8 kV system's Neutral-Grounding-Resistance! Phil
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    high voltage on genset

    tonka... Welcome to Control.com. When was the speed sensor on the Diesel last checked? Regards, Phil Corso
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    Generator Bearing Temperature rises with increase in Excitation

    Moizfarooqui... Sorry about my Different Topic. Fault was 3-phase! PS, what time-zone are you in? Regards, Phil
  18. P

    Generator Bearing Temperature rises with increase in Excitation

    Moizfarooqui... We can now rule out a mechanical problem. I want you to carry out what I call the Radio-test. I've used it in the past to detect problems with induction motors having Open Rotor-Bar-to-Ring problems. It's in this forum's archives, sometime in 2013! But, it's very simple to do...
  19. P

    Generator Bearing Temperature rises with increase in Excitation

    Moizfarooqui.. 9) What are DE and NDE Bearing-Temps at Rated-Speed but Stator-kV is 0 Volts? Phil
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    Generator Bearing Temperature rises with increase in Excitation

    Moizfarooqui Welcome to Control.com 1) What is the value of the earthing resistor? 2) When not running what is the motor carcass to earth resistance? 3) How old is machine? 4) Is it a Brushless or Slip-ring machine 5) If Stator-fault was the initial problem, why was rotor changed? 6) Was...
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