Gas Turbine No. 7 (GT-7) is a General Electric Model M enclosed, packaged-turbine that reliably supplied 13kV electricity to the  refinery electrical grid and recovered waste heat from the turbines to generate steam.  The 17 MW Frame 5 HRSG has a steam  generator.  The inlet and compressor casing are made of cast iron while the compressor discharge and turbine casings are made of nodular  iron. The compressor stator blades are made of stainless-steel alloys.   The turbine is a single-shaft type with axial flow. The unit is designed to operate in single or combined cycle and is equipped  with thrust bearings, active and inactive, to maintain the rotor stator axial position. The unit has a folded back combustion  chamber on a single base mount.  This configuration provides the maximum design for the mixing zones for turbine fuel and  air.   GT-7 runs 28,550 HP @ 5100 RPM. The GT is governor controlled by Mark IV Speedtronic Analog & Digital Systems Normal  operating condition (NOC) proved exhaust temperature of 976 deg F with compress discharge pressure of 120 psig and zero to  5100 rpm (overspeed trip set point is 110% of rated speed).  Generator  Metallurgy: Copper stationary windings  with copper and stainless-steel wound  rotor and rotor slots   60 Hz, three (3) Phase, WYE connected,  two pole, air cooled with a Phase  Rotation of Phase A, B, and C.   Generator Rating: 17 MW   Generator Amperes: 864   Exciter Voltage: 250   Exciter Amperes: 194  Average Generator VAR (Volt-Amperes  Reactive) Power Loading: 8 MVAR   Average Power Factor: 0