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Single Phase Power Equations

Single phase electrical power equations

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Single phase power equations:

Real Power

Wapplied = U I PF / 1000                             (1)


Wapplied = real power (kilowatts, kW)

U = voltage (volts, V)

I = current (amps, A)

PF = power factor - 0.7 - 0.95

Total Power

W = U I / 1000                                     (2)

Brake Horsepower

WBHP = U I PF μ / 746                          (3)


WBHP = brake horsepower (hp)

μ = device efficiency

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