Generac Power Systems NP Series - ELECTRICAL FORMULAS

ELECTRICAL FORMULAS
TO FIND
KNOWN VALUES
1-PHASE
3-PHASE
KILOWATTS (kW)
Volts, Current, Power Factor
ExI
1000
Exlx1.73xPF
1000
KVA
Volts, Current
E X I
• ■ 1000
ExI 1.73
1000
AMPERES
kW, Volts, Power Factor
kWxIOOO ■
E
kWx 1000
E X 1.73 X PF
WATTS
Volts, Amps, Power Factor
Volts X Amps
E X 1 X 1.73 X PF
NO. OF ROTOR
POLES
Frequency, RPM
FREQUENCY
RPM, No. of Rotor Poles
RPM
Frequency, No. of Rotor Poles
kW (required for
Motor)
Motor Horsepower, Efficiency
HP X 0.746
Efficiency
HP X 0.746
Efficiency
RESISTANCE
Volts, Amperes E
1
E
1
VOLTS
Ohm, Amperes
IxR
_
IxR
AMPERES
Ohms, Volts
E
R
E
R
E = VOLTS I = AMPERES R = RESISTANCE (OHMS) PF = POWER FACTOR
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