Specification

G4-315 (26RCA) 4/23a
Alternator Specifications
Alternator Specifications
Specifications Alternator
Manufacturer Kohler
Type 2-Pole, Rotating Field
Leads, quantity
2F8 4
2G8 12
Voltage regulator Digital
Insulation: NEMA MG1-1.66
Material Class H
Temperature rise
130_C Standby
Bearing: quantity, type 1, Sealed
Coupling Direct
Amortisseur windings Full
Voltage regulation, no-load to full-load RMS
1.0%
One-step load acceptance 100% of Rating
Peak motor starting kVA: (35% dip for voltages below)
240 V, 1 ph 2F8 (4 lead) 39 (60 Hz)
240 or 480 V, 3 ph 2G8 (12 lead) 63 (60 Hz)
Alternator Features
D Compliance with NEMA, IEEE, and ANSI standards for
temperature rise.
D Self-ventilated and dripproof construction.
D Windings are vacuum-impregnated with epoxy varnish for
dependability and long life.
D Superior voltage waveform and minimum harmonic
distortion from skewed alternator construction.
D Digital voltage regulator with r1.0% no-load to full-load
RMS regulation.
D Rotating-field alternator with static exciter for excellent
load response.
D Total harmonic distortion (THD) from no load to full load with
alinearloadislessthan5%.
Application Data
Engine
Engine Specifications
Manufacturer Kohler
Engine: model, type CH1006 4-Cycle
Cylinder arrangement V-2
Displacement, cm
3
(cu. in.) 999 (61)
Bore and stroke, mm (in.) 90 x 78.5 (3.54 x 3.1)
Compression ratio 10.5:1
Main bearings: quantity , type 2, Heavy-Duty Sleeve
Bearings
Rated RPM 3600
Max. engine power at rated rpm, kW (HP)
LPG 26.1 (36.4)
Natural gas 24.5 (33.0)
Cylinder head material Aluminum
Valve material
Steel/Stelliter
Piston type and material Aluminum Alloy
Crankshaft material Heat Treated, Ductile Iron
Governor: type Electronic
Frequency regulation, no load to full load Isochronous
Frequency regulation, steady state r0.5%
Air cleaner type Dry
Engine Electrical
Engine Electrical System
Ignition system Electronic,
Capacitive Discharge
Starter motor rated voltage (DC) 12
Battery (purchased separately):
Ground Negative
Volts (DC) 12
Battery quantity 1
Recommended c old cranking amps:
(CCA) rating for - 18_C(0_F)
500
Group size 51
Exhaust
Exhaust System
Exhaust temperature exiting the
enclosure at rated kW, dry, _C(_F)
260 (500)
Lubrication
Lubricating System
Type Full Pressure
Oil capacity (with filter), L (qt.) w
1.9 (2.0)
Oil filter: quantity, type w
1, Cartridge
Oil cooler Integral
w Kohler recommends the use of Kohler Genuine oil and filters.
Fuel Requirements
Fuel System
Fuel types Natural Gas or LPG
Fuel supply inlet 3/4 NPT
Fuel supply pressure, kPa (in. H
2
O):
Natural gas 0.9- 2.7 (3.5-11)
LP 1.7- 2.7 (7-11)
Fuel Composition Limits *
Nat. Gas LPG
Methane, % by volume (minimum) 90 min. —
Ethane, % by volume (maximum) 4.0 max. —
Propane, % by volume 1.0 max. 85 min.
Propene, % by volume (maximum) 0.1 max. 5.0 max.
C
4
and higher, % by volume 0.3 max. 2.5 max.
Sulfur, ppm mass (maximum) 25 max.
Lower heating value,
MJ/m
3
(Btu/ft
3
), (minimum)
33.2 (890) 84.2 (2260)
* Contact your local dealer for suitability and rating derates based on
fuel compositions outside these limits.