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Generac SD1250 Generator Set

The Generac SD1250 is a 1250 kW (1250 kVA) Diesel standby generator set powered by a Detroit Diesel 12V4000 engine. It is available at 277/480 V and 600 V, 3-phase and 60 Hz. It holds about 220 L (58.1 gal) of oil and 397 L (104.9 gal) of coolant, with a maximum ambient rating of 50 °C. The set measures 5266.3×2376.1×2847.1 mm (207.3×93.5×112.1 in) and weighs about 12405.8 kg (27350 lb).

1250 kW
Standby
48.75 L
Displacement
220.0 L
Oil capacity
1
Document types

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Specifications

FuelDiesel
Frequency60.0 Hz
Standby power1250 kW
Standby kVA1250
Prime power1000 kW
ControllerE Control Panel
Oil capacity220.0 L
Voltage options277/480 V, 600 V
Phase3-phase
Power factor0.8
Battery voltage24V V
Battery quantity4
Coolant capacity397 L
Max ambient50 °C
Dimensions (L×W×H)5266×2376×2847 mm
Dry weight12405 kg

Engine

Detroit Diesel 12V4000
Oil capacity220.0 L
Coolant capacity159.0 L
Displacement48.75 L
AspirationTurbocharged/Aftercooled
Rated speed1800 rpm

Common questions

What is the power rating of the Generac SD1250?

The Generac SD1250 is rated 1250 kW standby (1250.0 kVA).

What engine does the Generac SD1250 use?

The Generac SD1250 is powered by the Detroit Diesel 12V4000 engine.

What fuel does the Generac SD1250 use?

The Generac SD1250 runs on Diesel.

What is the oil capacity of the Generac SD1250?

The Detroit Diesel 12V4000 engine in the Generac SD1250 has an oil capacity of 220.0 liters.

Fuel consumption

RatingLoadL/hgal/h
Prime25%71.919.0
Prime50%132.035.0
Prime75%193.051.0
Prime100%257.068.0
Standby25%87.023.0
Standby50%162.043.0
Standby75%242.064.1
Standby100%320.084.7

Available documents

Spec sheet — 0165960SBY (Generac)

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