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PAGE 22 — INDUSTRIAL GENERATOR SETS — APPLICATION & INSTALLATION MANUAL — REV. #4 (09/07/07)
GENSET SIZING — DETERMINING LOAD CHARACTERISTICS
Determining Load Characteristics
Lighting
For all types of lighting loads:
RkW = The sum of the rated watts of all lamps and ballasts.
Typical ballast wattages are defined by Table 2 below:
segattaWtsallaB.2elbaT
PMALTSALLAB
taeherP,W04,21-Thcni84W01
tratSdipaR,W04,21-Thcni84W41
tnecseroulFW04tuptuOhgiHW52
W001,yrucreMW53-81
W004,yrucreMW56-52
For all types of lighting loads, except for high intensity
discharge (HID), use the following:
SkW = RkW
Due to the starting characteristics of HID lighting, assume
that
SkW = 0.75 x RkW
Unless otherwise known, assume the following starting and
running power factors (SPF and RPF, respectively, see Table
3 below) for the following types of lighting:
rotcaFrewoPgninnuR&gnitratS.3elbaT
gnithgiLfoepyTFPSFPR
tnecseroulF59.059.0
tnecsednacnI00.100.1
egrahcsiDytisnetnIhgiH58.009.0
Single-Phase Induction Motor
For 1Ø motors, use the SkVA, SkW, RkVA, and RkW values
in Table 4 below that correspond to the motor nameplate
horsepower and type.
scitsiretcarahCrotoMesahPelgniS.4elbaT
PHWkRAVkRAVkSWkS
esahPtilpS
6/13.05.05.38.2
4/14.06.08.48.3
3/15.07.06.55.4
2/17.09.07.71.6
nuRnoitcudnI/tratSroticapaC
6/13.05.06.20.2
4/14.06.03.36.2
3/15.07.09.31.3
2/17.09.03.552.4
4/30.152.11.77.5
12.16.15.96.7
2/1-16.10.252.414.11
22.27.2912.51
33.31.45.828.22
nuRroticapaC/tratSroticapaC
6/13.05.08.23.2
4/14.06.08.30.3
3/15.07.06.39.2
2/17.09.09.57.4
4/30.152.10.84.6
12.16.16.017.21
2/1-16.10.20.617.21
22.27.22.120.71
33.31.48.135.52
)CSP(roticapaCtilpStnenamreP
6/13.05.00.18.0
4/14.06.05.12.1
3/15.07.00.26.1
2/17.09.00.34.2
Then the following can be calculated: