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There is no perfect turbine control system. Period. The Speedtronic control system suffers from lack of documentation, and, worse, poor documentation. If people had good documentation to refer to, and if terms were used consistently in GE-design control systems, Speedtronic control systems and...

The general differentiation is that a runback is initiated by some condition/event and the unit is <i>automatically</i> unloaded, usually to some present value. Some units will go into a runback when one of the exhaust frame blowers is not running, and the unit will usually unload to something...

I've had good success with DeltaCAD. It's inexpensive and very powerful.

Ayman, Thanks for the feedback, but what you're reporting is kind of, well, odd. Running a turbine compartment ventilation fan during cooldown generally causes the axial compressor casing to cool--and "shrink"--more quickly that the compressor rotor. This usually causes rubs, which cause...

You might also consider contacting Woodward at their Fort Collins, CO, offices. Their technical support is pretty good. They might have a solution for you, because it's pretty certain this isn't the first time they've heard of this problem.

In the drawing below, I've attempted to draw the scheme that GE typically uses for connecting generator RTDs to the monitor/control system. They typically use two-conductor, twisted, shielded cables to connect two of the three RTD leads to the monitor/control system. They ground the third RTD...

There is not enough information to make an appropriate comment. My first question is: Did the unit behave as you expected <b>before</b> the major inspection? If so, tell us what Process Alarms/conditions caused the generator breaker to open without tripping the unit leaving the turbine at...

> what are the possible causes of oil coming out from generator water detector? Failed or failing seals. Poor Seal Oil Pressure regulation during purging/charging. Poor operation or valving of Seal Drain Enlargement tank drains. Have a look at the Seal Oil System piping drawing.

I don't have access to a Starting Means Piping Schematic (P&ID) at this writing, but I'll take a stab at trying to describe how it works. It would be best if you would describe the problems you are experiencing and we could provide a more concise answer, and if you wanted more detailed...

ahdash, I'm pretty sure I'm going to regret this response, but here goes. The choice of a turbine control system should almost <b>NEVER</b> be based on the manufacturer of the hardware or the cost of the project. Any decision should be made based on the experience of the company...

Each processor in the Mark V has an IONET to connect cards which are part of the processor but are located outside of the processor to the processor. In other words, not all of <R>'s complement of cards is located in <R>. Same for <S>, and <T>, and <C>. There can be more than one TCDA card...

The machines were <b>NOT</b> named after females. As otised said, a spoken M sounds very much like a spoken N, and so Mary and Nancy were used to differentiate between 500nN and 500nM machines to reduce any possible confusion. Just as when speaking on a radio it is sometimes necessary to...

Max should contact multiple generator vendors (manufacturers; manufacturer representatives) to get help with choosing the proper machine for the application. Max should also be cognizant of the basic terms, as you seem to be, but a good salesperson will be able use the information you provide to...

The question is not clear, and the abbreviations are unclear, as well. I'm pretty sure 'GG' stands for gas generator, the High Pressure shaft of a multi-shaft machine. I'm not sure what 'Mload' means, but possibly Megawatt load? Since the LP turbine shaft typically is directly connected to...

Does the Woodward Linknet module have any kind of filtering, such as a 50 or 60 Hz filter which you could enable?

Not enough information. Are these units being operated in island mode? If so, how?

Many Mk-II-equipped units used interconnecting cables with pinned-and-socketed connectors on one or both cable ends. These are subject to corrosion if they were not properly tightened during original construction--and many weren't. Also many cable vaults/pits have been found to be filled with...

G.Rajesh and others, Sorry I couldn't get the download, but I trust my virus detector and want to keep my record of clean PCs. So, I'm not chancing the download at this time. The reason I asked about checking the frequency at the PTBA is that would tell us if the speed pick-up is working...

MIKEVI, Actually, my post was shorter but we both covered the same concerns. Just to let you know, Speedtronic turbine control panels can synchronize more than one breaker. All that's required is a second PT for the "other" side of the second breaker (and one that is phase shifted if...

Jessica, Your own company's website (www.itargetsensors.com) lists a lot of uses for LVDTs, many of them in the aerospace industry. Most turbine valves are operated by hydraulic cylinder actuators. If you're looking for possible sales leads by finding out where LVDTs could possibly be...