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If I understand the original poster's questions, I've never seen complete instrument/device manufacturer/model number information in any Toolbox, ToolboxST or Control Specification drawing. This kind of information typically has to be compiled by site personnel by methodically going to each...

Fran, I've never tried using Toolbox to ascertain serial numbers for cards. I've always removed the card to read the S/N on the label of the card. It might be possible, but I've no access to a Mark VI at this writing. But, I don't think it's possible--though I am often mistaken and quite...

>After a successful startup, we noticed "HART message server >is not running" in the notification bar. > >1. does the indication mean anything? It would seem, based on the information provided, that the indication noticed in the "...notification bar...." might be coming from the...

Hello, I haven't been able to find the device instruction manual on the World Wide Web, so I can't say for sure what the output is capable of and what kind of voltage it might generate (or not). I also don't have access to the Mark V Application Manual, GEH-6195, Appendix D (which is...

bnvegda, You haven' provided all of the requested information. Where is the unit located? What are the expected minimum and maximum temperatures during the year?

loghman, If this is a GE-design Frame 9E (or Frame 9EA) heavy duty gas turbine with a Mark* turbine control system and DLN-I (Dry Low NOx 1) combustion system, then, Yes. There are things which the grid company/operator should be (but usually AREN'T) aware of when operating the unit using...

loghman, It's probably a language issue, but you don't seem to understand how GE heavy duty gas turbines are controlled--which is <i>similar</i> to how just about every other prime mover (be it steam turbine or gas turbine) that is synchronized to a grid with other prime movers. When the...

So, I've re-read the original post several times, and it's beginning to make more sense now (sorry; sometimes I can be a little more obtuse than usual). Without being able to see the programming in the Mark* at your site, it would seem (based on the information provided) the Mark* has the GE...

When AGC is ON, what is the signal coming from the grid--is it a load reference (usually a 4-20 mA signal), or RAISE- and LOWER SPEED/LOAD signals to increase or decrease the turbine speed reference (usually discrete signals (contact closures))? When AGC is ON, what operating mode is enabled...

Vivek, >>"voltage measurement from the bus (especially during >start-up, when the breaker connecting the generator to the >bus would be open)"< The major part of the statement is: "From my experience AVR sensing is usually accomplished using the generator output terminals--not the bus to...

Now, for the answer to the NEXT questions.... Why didn't the designers make the minimum angle 0 degrees and the maximum angle 100 degrees, and let the turbine control system control to whatever positions (34, 57, 84 or 86) were required? Well, they didn't want the IGVs to close below...

Please take time to read and re-read (and re-re-read) this response if necessary, because it's not intuitive and it doesn't make many people happy when it's first presented. It WILL begin to make sense if you consider it, and re-consider it, and mull it over in your mind. The positions (not...

Dear, For most GE-design Frame 7EA heavy duty gas turbines 60% speed is the point at which the torque converter is depressurized to stop the transmission of torque to the turbine-generator shaft during acceleration when starting. If there was high vibration and high exhaust temperature...

I have to hope that there wasn't misapplication of these valves to this level. Maybe on some machines, but, hopefully not on all--or even this many!!! (YIKES!!!) I have seen oil reservoirs re-filled without cleaning the top of the reservoir/tank--and in some cases the tops were FILTHY (either...

G.A.abobaker, I can say the same thing; your question is a little bit confusing but I will try to answer as best I can. Here's what I think you're trying to ask. You have a transmission and distribution system that is capable of powering a load independently of an infinite grid at some...

Hello, When you send these hydraulic valves off for repair do you receive a report to tell you what the problem(s) with them were? Most problems with hydraulic valves are the result of poor hydraulic oil quality. Do you have the hydraulic oil(s) tested regularly, or have you ever had the...

As I further suspected.... The control system is not a Mark*. >We had trip signal for high spread but manually bypassed it. WHETHER OR NOT the turbine control system is a Mark* there are just some things one should <b>NOT</b> do. Forcing, or bypassing, a trip <i><b>especially for a high...

AHHH!!! How can you expect to run a unit at 3 MW when it's not synchronized to a grid? In addition to not listing the alarms which were active during the operation you failed to mention what fuel was being burned. AND, running a heavy duty gas turbine for two hours unloaded just isn't a...

Surya, From my experience AVR sensing is usually accomplished using the generator output terminals--not the bus to which the generator is connected. Usually, the generator is isolated from the bus by a breaker so it's not really a good idea to take the voltage measurement from the bus...

>RTD showing low reading when we touch the terminal lose and >tight it's become normal what is the reason of it it's >always like that? I sincerely hope what you typed is not what you meant to say. Usually, when any connection of a sensor is loose and not making contact the feedback from...