Generac Power Systems 9344-1 - Manual (Page 39)

ELECTRICAL FORMULAS
TO FIND KNOWN VALUES 1-PHASE 3-PHASE
KILOWATTS (kW) Volts, Current, Power Factor ExI E X T X 1.71 X PF
1000 1000
KVA Volts, Current ExT ! E. x I a L73
1000 ; 1000
AMPERES kW, Volts, Power Factor kWxlOOO kWx 1000
E i Ex 1.73 xPF
WATTS Volts, Amps, Power Factor Volts X Amps E X I X 1.73 X PF
NO. OF ROTOR Frequency, RPM
.
2
X
60 X Frequency 2 X 6flxFie,quency
POLES RPM RPM
FREQUENCY RPM, No. of Rotor Poles
RPM X Poles RPM X Poles
2x60 i 2 x 6 0
RPM Frequency, No. of Rotor Poles 2 X 60 X Frequency 2 X 6 0 X Frequency
Rotor Poles : Rotor Poles
kW (required for Motor Horsepower, Efficiency HP X 0.746 : HP X 0.746
Motor) Efficiency Efficiency
RESISTANCE Volts, Amperes
E : E
I I
VOLTS Ohm, Amperes IxR IxR
AMPERES Ohms, Volts
1 ^
E
1 R
1
R
E = VOLTS I = AMPERES R = RESISTANCE (OHMS) PF = POWER FACTOR