Standby Power Rating
70 kW 60 Hz
Liquid Cooled Gas Engine Generator Sets
Whisper-Test™
Low Speed Exercise
61 dB(A) at 23 feet
GENERAC 6.8L ENGINE
Naturally Aspirated
Gaseous Fueled
UL 2200 Listed
Transfer Switch is sold separately
STANDARD EQUIPMENT
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UV/Ozone resistant hoses
Watertight state of the art electrical connectors
Mainline circuit breaker
Oil drain extension to frame rail
Radiator drain extension
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All input connections in one single area
High coolant temperature shutdown
Low oil pressure shutdown
Low coolant level automatic shutdown
Low fuel pressure
Battery charge alternator
Overspeed automatic shutdown
Adjustable cranking timer
Adjustable exercise timer
Oil drain extension
Cool flow radiator
2 Amp static battery charger
Battery, battery rack and battery cables
Fan and belt guards
Isochronous governor
Flex fuel line pigtail
Closed coolant recovery system
FEATURES
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Watertight electrical connectors
Rodent proof construction
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Innovative design and fully prototype tested
UL 2200 Listed
High efficiency, low distortion Generac designed alternator
Vibration isolated from mounting base
Matching Generac transfer switches engineered and tested
to work as a system
All components easily accessible for maintenance
Electrostatically applied powder paint
Built-in kW, kVAR and power factor meters
Solid state frequency compensated voltage regulator
Dynamic and static battery charger
Sound attenuated acoustically designed enclosure
Whisper-Test™ for low noise level exercise
Acoustically designed engine cooling system
High flow low noise factory engineered exhaust system
State of the art digital control system with H-100 microprocessor
control panel
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COMMERCIAL SERIES
COMMERCIAL 70 kW
OPERATING DATA
KW RATING
COMMERCIAL SERIES
COMMERCIAL 70 kW
70
ENGINE SIZE
6.8 Liter V-10
GENERATOR OUTPUT VOLTAGE/KW - 60 Hz
120/240V, single phase, 1.0 pf
120/208V, 3-phase, 0.8 pf
120/240V, 3-phase, 0.8 pf
277/480V, 3-phase, 0.8 pf
KW
AMP
CB Size
70 LP / 68 NG
70 LP / 68 NG
70 LP / 68 NG
70 LP / 68 NG
291.6 LP / 283.3 NG
243.1 LP / 236.2 NG
210.7 LP / 204.7 NG
105.3 LP / 102.4 NG
300
300
250
125
GENERATOR LOCKED ROTOR KVA
AVAILABLE @ VOLTAGE DIP OF 35%
Single phase or 208V & 240V 3-phase
480V 3-phase
145
160
ENGINE FUEL CONSUMPTION (Natural Gas) (Propane)
Natural Gas
(ft /hr.)
110
260
499
696
1020
Propane
3
(gal/hr.)
1.20
2.85
5.46
7.62
cu ft/hr
Exercise cycle
44.2
104.9
200.9
280.4
411
25% of rated load
50% of rated load
75% of rated load
100% of rated load
11.17
ENGINE COOLING
Air flow (inlet air including alternator and combustion air)
System coolant capacity
Heat rejection to coolant
Max. operating air temp. on radiator
Max. ambient temperature
3
ft /min.
5200
4.5
287,000
60 (150)
50 (140)
US gal.
BTU/hr.
°C (°F)
°C (°F)
COMBUSTION AIR REQUIREMENTS
Flow at rated power 60 Hz
cfm
205
SOUND EMISSIONS IN DBA
db(A) @ 23 feet in exercise mode
db(A) @ 23 feet at normal operating load
61
65
EXHAUST
Exhaust flow at rated output 60 Hz
Exhaust temp. at muffler outlet
cfm
°F
557
890
ENGINE PARAMETERS
Rated synchronous RPM
HP at rated KW
60 Hz
60 Hz
1800
110.7
POWER ADJUSTMENT FOR AMBIENT CONDITIONS
Temperature Deration
3% for every 10 °C above - °C
1.65% for every 10 °F above - °F
25
77
Altitude Deration
1% for every 100 m above - m
3% for every 1000 ft. above - ft.
183
600
RATING: All three phases units are rated at 0.8 power factor. All single phase units are rated at 1.0 power factor. STANDBY RATING: Standby ratings apply to installations served by a reliable utility
source. The standby rating is applicable to varying loads for the duration of a power outage. There is no overload capability for this rating. Ratings are in accordance with ISO-3046-1. Design and
specifications are subject to change without notice. Maximum wattage and current are subject to and limited by such factors as fuel Btu content, ambient temperature, altitude, engine power
and condition, etc.
INTERCONNECTIONS
COMMERCIAL 70 kW
KW
70
70
70
70
VOLTS
120/240 1
120/208 3
120/240 3
277/480 3
CB AMPS
300
LUG SIZE
ø
ø
ø
ø
1-600 mcm to 2 - 250 mcm-2- 1/0
1-600 mcm to 2 - 250 mcm-2- 1/0
1-600 mcm to 2 - 250 mcm-2- 1/0
300 mc to #6
300
250
125
INSTALLATION LAYOUT
COMMERCIAL SERIES
Note:
Door access from
both sides.
UNIT WEIGHT: Steel 2185 lbs., Aluminum 2040 lbs.
GENERAC® POWER SYSTEMS, INC. • P.O. BOX 297 • WHITEWATER, WI 53190
www.guardiangenerators.com
Bulletin 0174670SBY / Printed in USA 06.07, 08.07
© 2007 Generac Power Systems, Inc. All rights reserved. All specifications are subject to change without notice.
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