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IGV Angle of Siemens Gas Turbine
IVG angle of Siemens Gas turbine model v94.3 250MW

I work in Gas turbine manufactured from SIEMENS model v94.3 250MW. In the air inlet HMI the IGV opening range is from -8 to 108%. I want to know its range in angles.

Also IGV opens at 130MW, why this?