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Partial Load Power Factor
•Cooling Tower Loading
–Typical cooling fans run the majority of
their time lightly loaded
–Traditional AC motor power factor is negatively impacted by light loading
•IPM Motor
Highest Industry Power Factor
–Permanent Magnet Motors provide high power factor even on light loads
–Power factor measures the ratio of real power to apparent power
–Higher power factor allows lower amps to do the same amount of (real) work
Active (Real) Power
Apparent
Power
Reactive
Power
Power Factor = Real Power / Apparent Power