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Arindam, First, the teeth of most jaw clutches are designed such that they are tapered and will not allow easy disengagement when the ratchet pump is shut off and there is no hydraulic ratchet pressure. Second, what is the state of L33HRF? Both when the hydraulic ratchet pump is running...

Samnix, Have you tried using the <BOI> to initiate a start? (There are instructions in the Mark V Users Guide, GEH-5979.) Also, there is probably a Demand Display with a START target on it. If the Mark V still won't "start" with either of those two methods then it's likely some...

Samnix, Have you used VIEW2 to see if L1START_CPB is changing from a logic "0" to a logic "1" when you click on the START target? If it was working, what changed in the time between it was working and now? Has someone been making changes to one or more of the .ASG files and recompiling...

flizit, Caution is always good. And usually healthy, too. According to the data sheet, the wires are rated for 600 VAC (well above your application) and for 5.6 Amps. That's the critical value--Amperes. As long as the application doesn't require more than 5.6A you're okay. And that...

flizit, Based on the information you provided both would appear to be adequate. My only concerns are: 1) be sure you get the required male and female connectors (the plastic ends) 2) be sure you get the required male and female metal pins and sockets for the plastic connectors 3) be...

ABDI, The fundamentals of transferring from Lean-Lean to Premix are as follows: 1) Reduce the fuel going to the Primary combustion zone to extinguish the flame in the Primary combustion zone; this means all the fuel flowing to the Primary combustion zone has to be stopped. To do this...

Because the purpose of IBH on GE-design heavy duty Frame 6B turbines (not F-class; B-class) is to protect the compressor when IGV angles are less than the typical minimum operating angle (57 DGA). Remember: The only control of air flow into the combustor is via the IGVs. And, the fuel-air...

If all you need are extension cables, then can you just buy a male- and female end for each cable you need, with the correct pins/sockets for each end, and build your own "straight-thru" cables--pin 1 to pin 1, pin 2 to pin 2, pin 3 to pin 3, and so forth? You don't need any power; the...

Liji, Thank you VERY MUCH for the detailed information. It would appear that the condition is real--there is truly a difference in VBV position above 30 MW. Do you have data from before the problem started to see if the axial compressor discharge pressure is lower (or higher) when the...

Guy, There are many different kinds of solar grid-tie panels; it depends on many factors. Most grid-tied systems use some kind of power inverter to change the DC produced by the solar panels to AC, and when the sun is bright enough that the power inverter can send AC current to the grid it...

Hmmm.... Have you tried swapping the two inputs and seeing if the difference is the same? Are the two inputs connected to different terminal boards, or the same terminal board? Do you have a spare terminal board to try? Have you verified the cabling between the terminal board(s) and the...

I just remembered: Acronis was, at least until very recently, being used with great success by GE and a lot of GE Mark V HMI operators and technicians for backing-up hard drives, both to other hard drives and to removable media (CDs, DVDs, etc.). But, you would have to find something that's...

This can be very easy (depending on your familiarization with PKZip and command-line programs) or very difficult. It also depends greatly on the type of removable media you have available (working floppy disk drive; working CD writer; etc.). When you say "...back up of the mark 5 [sic]...

said, It's possible to export ToolboxST trend data to .csv format, I believe via the File | Export -> Menu bar drop-down list. If there was a method to import any information to a trend it would also likely be on the File Menu bar drop-down list (as File | Import ->). Have you tried...

otised, I agree with everything you said--<b><i>except</i></b> this unit is a DLN unit. The IGVs operate very differently on DLN units--even when in simple cycle versus combined cycle mode. And DLN 2.n units don't usually have the selection for IGV Exhaust Temperature Control, or even IBH...

Amr Karam24, Without being able to review the application code running in the Mark VIe of the turbine at your site it's virtually impossible to say for sure what that 'target' (what you're calling a 'selector') does. Most targets on the Start-up display are grouped together. There's the...

Amr Karam24, Hello, again. 1) You probably already know this, but SC likely stands for 'Simple Cycle', and CC likely stands for Combined Cycle. When turbines are equipped with this there is usually a diverter damper and bypass stack and HRSG (Heat Recovery Steam Generator ("boiler")) on...

Controls_guy, Sorry, but your explanation is not clear. Most non-black start GE-design heavy duty gas turbines get their auxiliary power (480 VAC for the MCCs, auxiliaries, lighting, air conditioning, etc.) from one--sometimes two--auxiliary power transformers. These transformers are...

amr karam, You're welcome. When I get unusual questions like this it's usually the result of one of two things; first, some event occurred and people are trying to understand how it happened or understand how they should have responded to the event. Usually, the questions are very "leading"...

Controls_guy, Without closing <b>any</b> breaker? I don't think so. Having said that, there are black start GE-design heavy duty gas turbines (turbines which can be started without AC from an auxiliary transformer (usually powered by a grid connection) which excite the generator at...