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Inertia constant of generator or motor and mechanical load (H) (>0). This is the specification for the stored energy in the rotating mass when operating at rated speed. For a generator, this includes the generator plus all other elements (turbine, exciter) on the same shaft and has units of MW*sec. For a motor, it includes the motor plus its mechanical load. Conventional units are per unit on the generator MVA base, usually expressed as MW*second/MVA or just second. This value is used in the accelerating power reference frame for operator training simulator solutions. Typical Value = 3.
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