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The relay contacts should be able to handle 24V dc. Whether they can handle more than 3A is a bigger question. You really should check with the relay manufacturer. They would need to know solenoid pick up current and steady state current (and know that it is an inductive load). You should...

If you no longer have a need to use liquid fuel, you should consider converting to gas only fuel. That would involve changing fuel nozzles, maybe end caps, maybe combustion liners, controls changes. You should contact GE about this. If you think that you may need to burn liquid fuel in the...

For what you are describing, you might as well run copper cable! The temperature reported by the thermocouple detector (analog input) will be the measured temperature minus the temperature at the point where you transition from type K to copper. As long as the temperature at this point is...

GE (General Electric USA) had Manufacturing Associate agreements with a number of international suppliers. Under these agreements, the international supplier purchased the rotor and hot gas path parts from GE USA. The international supplier built the rest of the machine, and was permitted to...

Did GE say why Mark VIe is not suitable? I would guess that maybe there are field instruments or actuators which Mark VIe cannot interface to and Mark VI can. (I know nothing about the SUVIMAC control.) Note, while Mark VIe was released in 2004, it was not used for turbine control on heavy...

I am not exactly sure what you are looking for because you don't state what the need is to upgrade from Mark VI to Mark VIe. If you are adding equipment (converting from simple cycle to combined cycle or adding new turbines that have Mark VIe, for example), you will get ToolboxST. ToolboxST...

While I may not have this entirely correct (I am a controls engineer, not a combustion engineer), my recollection is that naphtha is a difficult liquid fuel - it has low lubricity (compared to distillate or kerosene) and is corrosive. I believe that it was preferable to leave the better fuel in...

I believe if you move from "crank" to "fire" the Speedtronic will automatically reduce the speed to firing speed. The reason is that the turbine will likely not light off at the higher speed. The reason for cranking at 20% is to reduce the time necessary to purge the exhaust prior to firing...

Gate cycle models are custom built for each plant. While the basic model for a 9FA gas turbine is mostly the same from one plant to the next, the plant model will differ because no 2 plants are really identical - different steam turbines, different HRSG's, different condensers, etc. The model...

In a combined cycle plant the load is controlled by the gas turbines. The steam turbine is operated on inlet pressure control mode with a pressure setpoint that will keep the valves essentially wide open. This provides the maximum thermal efficiency. For a multi-shaft configuration (multiple...

Before deciding the RANGE, you need to choose the HH and LL points, since the RANGE must encompass those points. For the tank described, I would typically go with a low range limit of 0 or 100 mm below the LL setting (whichever is greater) and a high range limit of 2000 mm or 100 mm above the HH...

Barometric pressure is used in the airflow calculation. Airflow is used in (optional) performance monitoring software. If you have the performance monitoring software, then if the sensor drifts or goes out of calibration you can get erroneous results from the performance monitoring software...

"ITS" stands for Integrated Temperature System. It included exhaust temperature control, overtemperature protection and combustion monitoring. It used the Intel 8008 processor.

You need to get procedure and recommendations from GE. This would likely involve operating the unit at purge speed. However, you would also likely need vacuum and steam seals (auxiliary steam required), and you may need to monitor steam turbine internal temperatures as well as HRSG temperatures...

Assuming you really mean thermocouple extension cables: You need to understand how a thermocouple measures temperature. A thermocouple is a junction between two dissimilar metals. That junction will generate a small emf (measured in millivolts) that is proportional to the temperature of the...

Do you have a CEMS (continuous emissions monitoring system)? You mentioned "High rate" and "Low rate." NOx analyzers for gas turbines usually have High rate (typically 0 to 200 ppmvd) for when water injection is off on liquid fuel, or below pre-mix mode on gas fuel), and Low rate (typically 0 to...

I am guessing the "7FE" is a typo and you really have a "7FA" or (less likely) "7FB". GE has changed the level switches used on the heat exchangers of the gas fuel performance heaters to displacer type devices. I don't recall the manufacturer, but you may want to check with GE. I don't know...

Speaking as a former GE engineer, for new gas turbine and steam turbine applications, GE will propose TMR Mark VIe controls. These controls are very reliable when the controls and instrumentation are maintained according to GE's recommendations. Most of the problems I have seen occur when users...

There are more than 10 cans in the 9F - either 12 or 14. Since I haven't worked directly on gas turbine controls for more than 20 years, and when I did I mainly worked on frame 3 and frame 5 mechanical drives, my memory is a little fuzzy there. My recent work has been on combined cycle controls...

The exhaust back pressure is higher in combined cycle due to the heat recovery equipment in the exhaust path. Treat the heat recovery equipment as an orifice. In simple cycle operation you are bypassing the orifice.