INNOVATIVE DESIGN & PROTOTYPE TESTING are key components of GENERAC’S success in "IMPROVING POWER BY DESIGN." But it doesn’t stop there. Total commitment to component testing, reliability testing, environmental testing, destruction and life testing, plus testing to applicable CSA, NEMA, EGSA, and other standards, allows you to choose GENERAC POWER SYSTEMS with the confidence that these systems will provide superior performance.

TEST CRITERIA:

> PROTOTYPE TESTED

> SYSTEM TORSIONAL TESTED

> NEMA MG1-22 EVALUATION

> MOTOR STARTING ABILITY

SOLID-STATE, FREQUENCY COMPENSATED VOLTAGE REGULATION.

This state-of-the-art power maximizing regulation system is standard on all Generac models. It provides optimized FAST RESPONSE to changing load conditions and MAXIMUM MOTOR STARTING CAPABILITY by electronically torque-matching the surge loads to the engine. 

SINGLE SOURCE SERVICE RESPONSE from Generac’s dealer network provides parts and service know-how for the entire unit, from the engine to the smallest electronic component. You are never on your own when you own a GENERAC POWER SYSTEM.

GENERAC TRANSFER SWITCHES. Long life and reliability are synonymous with GENERAC POWER SYSTEMS. One reason for this confidence is that the GENERAC product line includes its own transfer systems and controls for total system compatibility.

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•Generac (OHVI) Design

Maximizes engine "breathing" for increased fuel efficiency. Cylinder walls run cooler, reducing oil consumption. Because heat is the primary cause of engine wear, the OHVI has a significantly longer life than competitive engines.

•"Spiny-lok" cast iron cylinder walls

Rigid construction and added durability provide long engine life.

ENGINE•Electronic ignition, spark advance and compression release

These features combine to assure smooth, quick starting every time.

•Full pressure lubrication system

Superior lubrication to all vital bearings means better performance, less maintenance and significantly longer engine life.

•Low oil pressure shutdown system

Superior shutdown protection prevents catastrophic engine damage due to low oil.

•High temperature shutdown

Prevents damage due to overheating.

•Revolving field

Allows for smaller, light weight unit that operates 25% more efficiently than a revolving armature generator.

•Skewed stator GENERATOR

Produces a smooth output waveform for compatibility with electronic equipment.

•Displaced phase excitation

Maximizes motor starting capability. Provides more surge capability than brushless generator designs.

•Automatic voltage regulation

Regulates the output voltage to ±2% prevents damaging voltage spikes.

•UL 2200 Listed

For your safety

•Fully Automatic

Transfers your vital electrical loads to the energized source of power.

•Remote MountingTRANSFERSWITCH

Mounts near your existing distribution panel for simple, low cost installation.

•UL Listed

For your safety

•Manual/Auto/Off switch

Selects the operating mode.

•Utility voltage sensing

Constantly monitors utility voltage, setpoints 60% dropout, 80% pick-up, of standard voltage.

•Utility interrupt delay

Prevents nuisance start-ups of the engine, set point approximately 10 seconds.

•Engine warm-up MICROPROCESSOR CONTROL

Ensures engine is ready to assume the load, setpoint approximately 10 seconds.

•Engine cool-down

Allows engine to cool prior to shutdown, setpoint approximately 1 minute.

•Seven day exerciser

Operates engine to prevent oil seal drying and damage between power outages.

•Timed Trickle Battery charger

Maintains battery amperage to insure starting.

•Main Line Circuit Breaker

Protects generator from overload.

•Weather protective enclosure

Ensures protection against mother nature. Hinged key locking roof panel for security. Electrostatically applied epoxy paint for durability.

•Enclosed critical grade muffler UNIT

Quiet, critical grade muffler is mounted inside the unit to prevent injuries.

•Small, compact, attractive

Makes for an easy, eye appealing installation.

•Pre-wired External Connection Box •1’ Flexible Fuel Line INSTALLATION

Easy Installation - Virtually all hardware included, plus step-by-step photographed Installation Guide.

•Composite Mounting Pad SYSTEM

•Pre-wired conduits

•UL Listed wire nuts

GENERATOR Model 04389(7kW) Model 04456 (12kW)

Model 04390 (15kW†)

Rated Maximum Continuous Power Capacity (LP)................................... 7,000 Watts* 12,000 Watts*

15,000 Watts*

Rated Maximum Continuous Power Capacity (NG)...................................6,000 Watts* 12,000 Watts*

13,000 Watts*

Rated Voltage................................................................................................120/240 120/240

120/240

Rated Maximum Continuous Load Current

120 Volts ................................................................................................ 50.0 NG/58.3 LP 100.0 NG/100.0 LP

108.3 NG/125.0 LP

240 Volts ................................................................................................ 25.0 NG/29.2 LP 50.0 NG/ 50.0 LP

54.2 NG/62.5 LP

Main Line Circuit Breaker ............................................................................. 30 Amp 50 Amp

60 Amp/70 Amp†

Phase ................................................................................................................. 1 1

1

Number of Rotor Poles .......................................................................................2 2

2

Rated AC Frequency ........................................................................................60Hz 60Hz

60Hz

Power Factor .......................................................................................................1 1

1

Battery Requirement (not included) ..........................................................Group 26/26R Group 26/26R

Group 26/26R

12 Volts and 12 Volts and

12 Volts and

350 Cold-cranking 525 Cold-cranking

525 Cold-cranking

Amperes Minimum Amperes Minimum

Amperes Minimum

Shipping Weight (Includes Transfer Switch) .............................................. 375Pounds 470 Pounds

487 Pounds

Dimensions (L" x W" x H")....................................................................... 48 x 24 x 28-1/4 48 x 24 x 28-1/4

48 x 24 x 28-1/4

Sound output in dB(A) at 23 ft. with generator operating at full load................ 68 70.5

71.5

†15kW on LP fuel requires electrical upgrade kit 04578. Kit includes power harnesses and 70 amp 2-pole circuit breaker.

ENGINE Model 04389 (7kW) Model 04456 (12kW)

Model 04390 (15kW)

Type of Engine........................................................................................GENERAC OHVI GENERAC OHVI V-TWIN

GENERAC OHVI V-TWIN

Number of Cylinders........................................................................................... 1 2

2

Rated Horsepower................................................................................. 14.5 @ 3,600 rpm 26 @ 3,600 rpm

30 @ 3,600 rpm

Displacement...................................................................................................410cc 763cc

992cc

Cylinder Block........................................................................................ Aluminum w/Cast Aluminum w/Cast

Aluminum w/Cast

Iron Sleeve Iron Sleeve

Iron Sleeve

Valve Arrangement.................................................................................. Overhead Valve Overhead Valve

Overhead Valve

Ignition System.................................................................................. Solid-state w/Magneto Solid-state w/Magneto

Solid-state w/Magneto

Compression Ratio.......................................................................................... 8.6:1 9.5:1

9.5:1

Starter............................................................................................................ 12 Vdc 12 Vdc

12Vdc

Oil Capacity Including Filter..................................................................... Approx. 1.7 Qts Approx. 1.7 Qts.

Approx. 1.7 Qts.

Operating RPM............................................................................................... 3,600 3,600

3,600

Fuel Consumption

Natural Gas .................... cu.ft./hr.

........................................ 1/2 Load 66 152

156

........................................ Full Load 119 215

220

Liquid Propane.................ft3/hr(gal/hr)

.........................................1/2 Load 30(0.82) 56(1.53)

58(1.58)

.........................................Full Load 54(1.47) 76(2.08)

88(2.40)

Required fuel pressure to generator fuel inlet at all load ranges - 5 to 7 inches of water column for natural gas, 11 to 14 inches of water col

umn for LP gas

CONTROLS

Mode Switch

-Auto .............................................................................................................................................. Automatic Start on Utility

failure/7 day exerciser

-Off ........................................................................................................................................... Stops unit. Power is removed

Control and charger still operate

-Manual/Test (start) ......................................................................................................................Start with starter control, unit

stays on. If utility fails, transfer

to load takes place.

Engine Start Sequence Cyclic cranking: 7 sec. on, 7 rest

(90 sec. maximum duration)

Engine Warm-up .................................................................................................................................................... 10 seconds

Engine Cool-Down .................................................................................................................................................... 1 minute

Starter Lock-out ....................................................................................................................................... Starter cannot re-engage until

5 sec. after engine has stopped.

2.5 Amp Timed Trickle Battery Charger .................................................................................................................. Standard

Automatic Voltage Regulator w/Overvoltage Protection ............................................................................................ Standard

Automatic Low Oil Pressure Shutdown ..................................................................................................................... Standard

Overspeed Shutdown ........................................................................................................................................... Standard, 72Hz

High Temperature Shutdown .................................................................................................................................... Standard

Overcrank Protection ................................................................................................................................................ Standard

Safety Fuse .............................................................................................................................................................. Standard

Rating definitions - Standby: Applicable for supplying emergency power for the duration of the utility power outage. No overload capability is available for this rating. (All ratings in accordance with

BS5514, ISO3046 and DIN6271). * Maximum wattage and current are subject to and limited by such factors as fuel Btu content, ambient temperature, altitude, engine power and condition, etc. Maximum

power decreases about 3.5 percent for each 1,000 feet above sea level; and also will decrease about 1 percent for each 12° C (10° F) above 15.5° C (60°F).

No. of Poles ........................................................................... 2 ........................................... 2 ........................................... 2

Current Rating (amps) .......................................................... 100 ..........................................100 ......................................... 100

Voltage Rating (VAC) ........................................................... 250 ......................................... 250 ......................................... 250

Utility Voltage Monitor (fixed)

-Pick-up ................................................. 70% ....................................... 70% ........................................ 70%

-Dropout ................................................ 60% ........................................ 60% ........................................ 60%

Return to Utility ....................................... approx. 13 sec. ....................... approx. 13 sec. ....................... approx. 13 sec.

Exerciser weekly for 12 minutes ...................................... Standard ................................ Standard ................................. Standard

UL Listed .......................................................................... Standard ................................ Standard ................................. Standard

Dimensions (H” x W” x D”) ........................................... 26.5 x 12.5 x 7 ...................... 26.5 x 12.5 x 7 ....................... 26.5 x 12.5 x 7

Total of Pre-wired Circuits ...................................................... 8 ........................................... 10 ........................................... 12

No. 15A 120V ..................................................... 5 ........................................... 3 ............................................. 5

No. 20A 120V ..................................................... 1 ........................................... 3 ............................................. 3

No. 15A 240V ..................................................... - ........................................... - ............................................ -

No. 20A 240V ..................................................... - ........................................... 1 ............................................ 1

No. 30A 240V ..................................................... 1 ........................................... 1 ........................................... 1

Circuit Breaker Protected

Available RMS Symmetrical

Fault Current @ 250 Volts ........................................ 10,000 .................................... 10,000 .................................... 10,000

• Electrically operated, mechanically-held contacts for fast, positive connections.  • Rated for all classes of load,  100% equipment rated, both inductive and resistive.  • 2 pole, 250 VAC contactors.  • 160 millisecond transfer time.  • Dual coil design.  • Main contacts are silver plated or silver alloy to resist welding and sticking.  • Nema 1 enclosure is standard on the 100 amp switch.