HomeGeneracGenerac SD080

Generac SD080 Generator Set

The Generac SD080 is a 80 kW (80 kVA) Diesel standby generator set powered by a Generac 3.9DTA engine. It is available at 120 V, 240 V, 80 V, 277 V and 480 V, single-phase, 60 Hz and rated 205 A. It holds about 18 L (4.8 gal) of oil and 15.9 L (4.2 gal) of coolant, with a maximum ambient rating of 48.9 °C. Starting uses 2 group-161970 batteries at 12 V. The set measures 2362.2×1016×1244.6 mm (93.0×40.0×49.0 in), weighs about 1100 kg (2425 lb) and produces 782 dBA at 1 m. An integrated tank holds 510 L (134.7 gal), roughly 81 hours of runtime.

80 kW
Standby
3.9 L
Displacement
18.0 L
Oil capacity
2
Document types

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Typical fuel consumption for 80–85 kW Diesel generators →

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Specifications

FuelDiesel
Frequency60.0 Hz
Standby power80 kW
Standby kVA80
Prime power64 kW
EmissionsEPA Certi fi ed
ControllerDigital H Control Panel - Dual 4x20 Display
Oil capacity18.0 L
Alternator390 (4-pole, Class H insulation)
Voltage options120 V, 240 V, 80 V, 277 V, 480 V
Phasesingle,three
Rated current205 A
Power factor[1.0, 0.8]
Circuit breaker205 A
Battery groupSee Battery Index 0161970SBY
Battery voltage12 V
Battery quantity2
Coolant capacity[15.9, 6.4, 9.5] L
Max ambient[48.9, 48.9] °C
Dimensions (L×W×H)2362×1016×1244 mm
Dry weight1100 kg
Fuel tank510.0 L
Tank runtime81 hr

Engine

Generac 3.9DTA
Oil capacity18.0 L
Coolant capacity6.4 L
Displacement3.9 L
Aspirationturbocharged/aftercooled
Rated speed1800 rpm

Maintenance & consumables

for the Generac 3.9DTA
ItemSpecCapacityPart #Interval
Air filter
Fuel filter100 hr
Oil filter100 hr
Battery100 hr
Belt100 hr
Coolant15.9 L100 hr
Oil20.0 L100 hr
Spark plug100 hr

Common questions

What size generator is the Generac SD080?

The Generac SD080 is rated 80 kW standby (80.0 kVA).

What engine is in the Generac SD080?

The Generac SD080 is powered by the Generac 3.9DTA engine.

What fuel does the Generac SD080 use?

The Generac SD080 runs on Diesel.

What is the oil capacity of the Generac SD080?

The Generac 3.9DTA engine in the Generac SD080 has an oil capacity of 18.0 liters.

Which alternator is fitted to the Generac SD080?

The Generac SD080 uses a 390 alternator. It has 4 poles. Insulation class H.

Parts

2
Part #DescriptionQtySystem
4.5DTAAlternator1Alternator buy
4045Hf275HEngine1Service part / kit Amazon eBay

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime100%16.713.8
Standby25%7.92.1
Standby50%14.03.7
Standby75%19.75.2
Standby100%20.817.3

Available documents

Spec sheet — 0k5092-sd080-4-5l (Generac)Spec sheet — sd080-80kw-diesel-generator-specsheet (Generac)Spec sheet — sd080 39ta (Generac)Parts manual — 0169830SBY (Generac)
Other sets with this engine