Spec Sheet

©2019 Cummins Inc. | NAS-6254-EN (A056T581) (10/19)
power.cummins.com
Product Features
Engine
•
Natural gas/propane
•
Engine air cleaner
•
Engine oil (Synthetic)
•
Oil drain extension tube
•
Low oil pressure shutdown
Fuel System
•
Single fuel – natural gas or propane vapor, field selectable
(Set to Natural gas from factory)
Alternator
•
60 Hz, 1 phase, < 5% THD (total harmonic distortion)
•
Long life electrographic DC brushes
•
Slip ring heater
Control
•
Display language – English
•
Under hood built in display
Electrical
•
Single 100A circuit breaker, UL certified
(On all models)
•
Battery charging alternator
•
Battery charger – 4 Amps
Cooling
•
Single direct drive blower
Enclosure
•
Aluminum exterior, galvanized steel interior
•
Evaluated to withstand 180 MPH wind loads in
accordance with ASCE7-10
Code Compliance
•
UL 2200
•
CSA 22.2 and B149.1
•
EPA emissions
•
NFPA 37 – 18 inches
Warranty
•
Base: 5 years / 2000 hours
•
Extended warranties available
Generator Set performance
Voltage regulation, no load to full load: ±1.25%
Steady state voltage variation: ±1.25%
Frequency regulation: Isochronous
Motor starting kVA (30% voltage dip): 40 for RS20A/AC,
34 for RS17A, and 26 for RS13A
Steady state freq. variation: ±1.25% (±1.5% @ No load)
Operating temperature: 122 °F (50 °C) to -40 °F (-40 °C)
See Accessories section for details on kits
Engine
Model: QSJ999G
Design: Naturally aspirated, V twin air cooled
Bore: 3.54 in (89.9 mm)
Stroke: 3.09 in (78.5 mm)
Displacement: 60.96 inch
3
(999 CC)
Cylinder block: Aluminum
Battery capacity: Group 51R, 450 CCA at ambient
temperature of 32 °F (0 °C)
Starting voltage: 12 volt, negative ground
Oil Filter type: Spin-on
Rated speed: 3600 rpm
Fuel supply pressure
Minimum - in H2O (kPa):
NG - 3.5 (0.87) / LP - 6.0 (1.49)
Maximum - in H2O (kPa):
NG - 12.0 (3.0) / LP - 12.0 (3.0)
Average fuel consumption
RS13A Fuel consumption – natural gas RS13A Fuel consumption – LP vapor
Load: 1/4 1/2 3/4 Full Load: 1/4 1/2 3/4 Full
Ft
3
/ hr. 129 154 187 228 Ft
3
/ hr. 42 51 64 83
M
3
/ hr. 3.7 4.4 5.3 6.5 M
3
/ hr. 1.2 1.4 1.8 2.3
BTU / hr.
123028
146534
178640
217227
BTU / hr.
98852
121723
152253
197681
RS17A Fuel consumption – natural gas RS17A Fuel consumption – LP vapor
Load:
1/4
1/2
3/4
Full
Load:
1/4
1/2
3/4
Full
Ft
3
/ hr. 134 165 215 258 Ft
3
/ hr. 48 63 82 102
M
3
/ hr. 3.8 4.7 6.1 7.3 M
3
/ hr. 1.4 1.8 2.3 2.9
BTU / hr. 127745 157870 205464 245954 BTU / hr. 114082 148026 194392 242386
RS20A & RS20AC Fuel consumption – natural gas RS20A & RS20AC Fuel consumption – LP vapor
Load: 1/4 1/2 3/4 Full Load: 1/4 1/2 3/4 Full
Ft
3
/ hr. 135 172 223 268 Ft
3
/ hr. 49 66 88 112
M
3
/ hr. 3.8 4.9 6.3 7.6 M
3
/ hr. 1.4 1.9 2.5 3.2
BTU / hr.
128822
163890
212731
255947
BTU / hr.
117208
157482
209404
265783
Nominal fuel rating – 1000 BTU / ft
3
(37 MJ / M
3
)
Conversion factor:
8.58 ft³ = 1 lb
0.535m³ = 1 kg
36.39 ft³ = 1 gal
Conversion factor:
8.58 ft³ = 1 lb.
0.535m³ = 1 kg
36.39 ft³ = 1 gal
1.
02
m³ = 1
gal (LPG)