
Deration – Operational characteristics consider maximum ambient conditions. Derate factors may apply under atypical site conditions. Please consult a Generac Power Systems Industrial
Dealer for additional details. All performance ratings in accordance with ISO3046, BS5514, ISO8528 and DIN6271 standards.
POWER RATINGS (kW)
STARTING CAPABILITIES (sKVA)
FUEL
COOLING
COMBUSTION AIR REQUIREMENTS
ENGINE
EXHAUST
STANDBY
PRIME
Three-Phase 120/208VAC @0.8pf
350 kW
Amps: 1216
315 kW
Amps: 1094
Three-Phase 120/240VAC @0.8pf
350 kW
Amps: 1053
315 kW
Amps: 948
Three-Phase 277/480VAC @0.8pf
350 kW
Amps: 527
315 kW
Amps: 474
Three-Phase 346/600VAC @0.8pf
350 kW
Amps: 421
315 kW
Amps: 379
sKVA vs. Voltage Dip
480VAC
208/240VAC
Alternator
kW
10%
15%
20%
25%
30%
35%
10%
15%
20%
25%
30%
35%
Standard
400
387
581
775
968
1162
1356
210
350
500
680
875
1100
Upsize 1
442
475
720
915
1145
1030
1290
-
-
-
-
-
-
Upsize 2
555
457
686
914
1143
1371
1600
-
-
-
-
-
-
Fuel Consumption Rates*
STANDBY
PRIME
Fuel Pump Lift - in (mm)
Percent Load
gph
lph
Percent Load
gph
lph
36 (900)
25%
8.4
31.8
25%
7.56
28.8
50%
14.5
54.9
50%
13.05
49.6
Total Fuel Pump Flow (Comb Return)
75%
20.1
76.1
75%
18.09
68.5
31 gph
100%
25.3
95.8
100%
22.77
86.3
* Refer to "Emissions Data Sheet" for maximum fuel flow for EPA and SCAQMD permitting purposes.
STANDBY
PRIME
Coolant Flow per Minute
gpm (lpm)
145 (552)
145 (552)
Heat Rejection to Coolant
BTU/hr
932,760
840,590
Inlet Air
cfm (m3/min)
19,070 (539.7)
19,070 (539.7)
Max. Operating Radiator Air Temp
Fº (Cº)
122 (50)
122 (50)
Max. Operating Ambient Temperature
Fº (Cº)
104 (40)
104 (40)
Coolant System Capacity
gal (L)
16.6 (63)
16.6 (63)
Maximum Radiator Backpressure
in H
2
O
1.5
1.5
STANDBY
PRIME
Flow at Rated Power
cfm (m3/min)
1195 (33.8)
1076 (30.4)
STANDBY
PRIME
Rated Engine Speed
rpm
1800
1800
Horsepower at Rated kW**
hp
530
477
Piston Speed
ft/min
1770
1770
BMEP
psi
313
281
** Refer to “Emissions Data Sheet” for maximum bHP for EPA and SCAQMD permitting purposes.
STANDBY
PRIME
Exhaust Flow (Rated Output)
cfm (m
3
/min) 2988 (84.6)
2808 (79.5)
Max. Backpressure (Post Silencer)
inHg (Kpa)
1.5 (5.1)
1.5 (5.1)
Exhaust Temp (Rated Output)
ºF (ºC) 1076 (580)
1076 (580)
Exhaust Outlet Size (Open Set)
NPT (male)
88.9 (3.5)
88.9 (3.5)
3 of 5
SD350
operating data (60Hz)
350 kW Diesel