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IEEE 122
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IEEE 122 91st Edition, December 5, 1991 Recommended Practice for Functional and Performance Characteristics of Control Systems for Steam Turbine-Generator Units
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Description / Abstract:
These recommendations apply to the following types of steam turbines, rated at 500 kW and larger, intended to drive electric generators at constant speed:
1) Condensing or noncondensing turbines without initial steam-pressure control, exhaust steam, pressure control, or either, including turbines used with reheat, regenerative feedwater heaters, or both. (See Figs 1 and 2).
2) Condensing or noncondensing turbines with initial steam-pressure control, exhaust steam-pressure control, or both, including turbines used with reheat, regenerative feedwater heaters, or both. [See Figs 3, 7, 8(a), and 8(b)].
3) Automatic extraction, induction, or both, and mixed-pressure turbines. [See Figs 4, 5, and 8(c)].
1) Condensing or noncondensing turbines without initial steam-pressure control, exhaust steam, pressure control, or either, including turbines used with reheat, regenerative feedwater heaters, or both. (See Figs 1 and 2).
2) Condensing or noncondensing turbines with initial steam-pressure control, exhaust steam-pressure control, or both, including turbines used with reheat, regenerative feedwater heaters, or both. [See Figs 3, 7, 8(a), and 8(b)].
3) Automatic extraction, induction, or both, and mixed-pressure turbines. [See Figs 4, 5, and 8(c)].