Search results

I work for a living, too. Please, call me CSA. Thanks for the feedback! "Feedback is the most important contribution!" (c) here at control.com. It's what makes forums like this really useful when people can find what works and what doesn't and use it to solve their own similar problems.

I think we're all trying to figure out how you're compressing electricity.... Seriously, though, it would appear that no one who's read your post has had a similar experience. This is really a better question for the InTouch people or some control system integrator who represents/sells...

It's perfectly acceptable to reply to GE and ask for a procedure for how to measure seal oil flow through the float trap. I don't have a generator seal oil piping schematic to look at, but if I recall correctly, the float trap is downstream of the seal drain enlargement tanks. Its purpose is...

Good morning, Bhagavan, Questions. This is better; thank you. Please understand, there are many aspects to the questions you are asking. A former colleague of mine was always heard to say, "Engineering is a series of compromises." That's a very simple, powerful and true statement. The...

You don't ask very many questions. And, your statements are kind of confusing. It's not clear if you're asking for confirmation of your understanding or if you're making statements about gas turbine operation. GE-design Inlet Bleed Heating (IBH) was originally designed for anti-icing (but...

Some may believe that having two separate oil tanks and having to store two separate types of oil (lubricating oil and hydraulic oil) is some kind of improvement. There are others who believe that utilizing a common oil medium for both lubrication (including jacking, or bearing lift, oil) and...

The 49X circuit is usually one long, series string of overload contacts. Most of the overloads do not utilize an auxiliary TOL relay, but a few manufacturers utilized relays that were de-energized when the overload condition was detected. If this is not the case for your unit, you then need...

surya, What are you trying to understand or wanting to do? What operating condition are you talking about: Part Load or Base Load? Firing temperature is <b>NOT</b> the same as exhaust temperature. At Part Load "firing" temperature isn't important. I'm referring to the definition of...

Units with conventional combustors not operating in IGV exhaust temp control at Part Load (below Base Load) MAY have the IGVs full open at some part load conditions. This is usually for simple cycle machines not wanting to maximize exhaust temperature to maximize steam production at gas turbine...

Dear rab, My opinion is the following: 1) You are suffering from a perspective that because you believe the IONET switches were replaced once for one reason that they may not be failing for another, separate reason. Or, even possibly the SAME reason. I've spoken with a former colleague and...

I would suggest that you need to study the available documentation on how the DLN combustion system on your turbine works. The Inlet Bleed Heat system in conjunction with the Inlet Guide Vanes are used to control the air flow through the turbine, like the throttle plate of a carburetor or a...

Well, I would guess it was something that was done during the major inspection outage that caused the problem. Have you traced the speed signals from the QTBA to the <R> core using the Signal Flow Diagrams in Appendix D of the Mark V Application Manual, GEH-6195? I would suggest the next step...

otised, You're going to learn quickly that people don't always type what they mean. It's probably that this respondent meant to say that a lot of new machines aren't including mechanical over-speed bolts these days, and are opting for a second (protective or "emergency") electrical...

This was covered in a recent thread. I wasn't quite clear on what was done to solve the problem, but it has also been covered in other threads. You say you replaced the CTBA (the input terminal board). I'm not quite clear what an 'alteration in the potency' means. What Diagnostic Alarms...

VTS by Trihedral Engineering www.trihedral.com Reasonable price; excellent support; easy to develop screens; easy trending and data archival features; lots of native device communication support for many RTUs, DCSs, PLCs, etc., as well as MODBUS. Widely used around the world for many...

Thanks for the feedback! 'Feedback is the most important contribution!' (c) here at control.com.

Bently-Nevada and Woowdward both make suitable overspeed protection units which have been used on many similar units. However, the problem with most overspeed bolts is that they don't work when they should (they get gummed up and stick), not that they trip when they shouldn't. So, what's...

Does the GE 7FA have conventional or DLN combustors?

Hi saha, When did this problem begin? Or is this something you just noticed? How is it adversely affecting the turbine operation? What Diagnostic- and Process Alarms are being annunciated when the unit is above 65% TNH? Are these same HP shaft speed pick-ups also connected to the...

You probably found this site using a search engine. control.com has an excellent 'Search' function which will return results very quickly. Try using terms like 'fuel transfer' and other related terms. (Use the Help feature for the Search function; it requires a very short learning curve, but...