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rauofelect, Your question is not clear. Is the DCS already connected to a time signal (GPS; IRIG-B; ???)? Or is the GE Mark VI HMI already connected to a time signal (GPS; IRIG-B; ???)? Have you looked in the HMI manual provided with the HMI? It's usually a .pdf file on the HMI in a...

Neo, Try this: http://www.rvo.nl/sites/default/files/2013/12/GE%20background%20article%20Wide%20Wobbe%20article%20in%20Turbomachinery%20Intl%20Oct2007.pdf If the link doesn't work for you, try searching the archives of Turbomachinery International for 10 October 2007 for an article...

naveed131, Either I didn't understand your post, or something seems amiss. I suspect the units have Woodward MicroNet controls, and there is some "external" power management system that is handling the island operation, something like a Woodward DSLC or DSLC-2. And, that you are being told...

Inst2015GE, There's' another thing which I've seen occur recently, and that is that if there is electrical noise on the liquid fuel flow divider wiring, or the flow divider toothed wheels are "vibrating" when there is no flow then the Speedtronic can--and will--interpret that there is liquid...

David_2, I think you'd make a great gas turbine field <b>engineer</b>, with heavy emphasis on the 'engineer' (as opposed to the field service people, technicians really, being tasked with trying to install, commission and troubleshoot GE-design heavy duty gas turbines these days). A field...

poom, This is a very difficult question to answer, because when the speed of the axial compressor of a single-shaft heavy duty gas turbine drops below 100%--as it will when the frequency decreases--the air flow through the machine will decrease. If the machine is operating at Base Load when...

Inst2015GE, <b><i>Speed</b></i> bypass valve? Never heard of one. 65FP-1 is the device name for the electro-hydraulic servo-valve used for liquid fuel flow-rate control. Older turbines used a variable displacement high pressure liquid fuel pump and 65FP-1 controlled the swash plate angle...

LukeeVasallo, The rotating portions of brushless exciters, and PMG exciters (yet another type of exciter used on smaller synchronous generators), are mounted on stub shaft that is coupled to the end of the generator rotor opposite the prime mover coupling. The exciter rotating portions are...

Roy Matson, You are correct that if the T/C input terminals are shorted at the T/C terminal board the Mark V will display ambient temperature. But, again--being a purpose-built control system the Mark V goes downscale when the input circuit is open. There are lots of reasons for this, but...

bpsemd, Congratulations, and thanks very much for the feedback! "Feedback is the most important contribution!"(c) here at control.com--it's what sets this forum apart from most others on the World Wide Web. I'm sure you had your reasons for downloading; I'm not going to comment on that...

Roy Matson, The Speedtronic Mark V in this case is a TMR (Triple Modular Redundant) gas turbine control panel, and Speedtronic turbine controls are purpose-built control systems--similar to but sometimes very different from other industrial control systems. The exhaust T/Cs are divided into...

Avworhiare, This is quite a large topic, with no easy answer. Hmmm ..., where to start.... When there is no reactive current (VArs; kVArs; MVArs--MVArs stands for Mega-Volt-Amperes-reactive, or millions of Volt-Amperes-reactive) flowing in the stator windings of a synchronous generator the...

ahmedsaad85 When did you experience the "same problem"? From the original commissioning of the control system? After some time had expired since the original commissioning of the control system? Was it on a Mark Ve? Because Mark Ve's use ToolboxST, not Toolbox. Mark VI turbine control...

bpsemd, If the problem stays in <S> all the time, and you've swapped or replaced the TCQA, SDCC and SLCC, and the T/C termination board on <R> and the problem goes away for a short time then reappears it would seem it's poor contact of pins/cables and/or bad cables. It's not difficult to swap...

bpsemd, What's the status of the situation? Are you aware the ribbon cable connectors (on the ribbon cables themselves, as well as the stationary receptacles on the printed circuit cards) are prone to corrosion in some environments? The OEM has recommended that a light film of conductive...

LukeeVasallo, You may be referring to a type of excitation system ("exciter") that's called a brushless excitation system. A small, stationary DC field, which is powered from the excitation control system ("AVR"), is used to create AC on a rotating armature inside the stationary DC field. The...

LukeeVasallo, I've typed almost this entire message twice, and both times it's been lost in the great bit bucket in the sky.... Let's hope the third time's a charm! Generators are devices for converting torque into amperes--just like electric motors are devices for converting amperes into...

Adel_S, This post is about <b>Mark V</b>, not Mark VIe. The Mark V does not have network switches.

CuriousOne, I have never heard of an overheated core in a Mark V. Each processor does its own cold junction compensation for T/C temperature measurement, and that can be seen by using the Prevote Data Display or Logic Forcing Display and viewing the signal TCQA_CJ_Q. If the discharge of an...

CuriousOne, What you're saying--without saying it outright--is that T/Cs are connected to the TBQx (I can't remember the last character; it's either B or C) and then groups of fifteen of them are connected to the TCQA cards in <R>, <S>, and <T>. So there are three ribbon cables on the TBQx to...