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Reverse-Power Setting (ANSI 32)

ANSI 32 reverse-power relay setpoint - typically 5–15 % of rated kW for diesel generators, 2–6 % for turbine.

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Formula, assumptions, and limits

Psetpoint=Rated kWmargin%P_\text{setpoint} = \text{Rated kW} \cdot \text{margin}\%
SymbolMeaningUnit
RatedkWRated kWGenerator ratingkW
MarginMarginPercentage of rated%

Source: IEEE C37.102 - Guide for AC Generator Protection

In short

ANSI 32 reverse-power relay setpoint - typically 5\u201315 % of rated kW for diesel generators, 2\u20136 % for turbine.

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