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Generac IDLC1250 Generator Set

The Generac IDLC1250 is a 1250 kW (1563 kVA) #2 Diesel standby generator set powered by a Mitsubishi S12R-Y2PTAW-1 engine. It is available at 220/380 V, 240/416 V, 254/440 V, 277/480 V and 347/600 V, 3-phase, 60 Hz and rated 1882 A. It holds about 180 L (47.6 gal) of oil and 509.1 L (134.5 gal) of coolant, with a maximum ambient rating of 45 °C. Starting uses 4 batteries rated 1100 CCA at 24 V. The set measures 5385×2362×2743 mm (212.0×93.0×108.0 in) and weighs about 11814 kg (26045 lb). The same S12R-Y2PTAW-1 engine also powers generator sets from Centrica, Igsa and Kohler.

1250 kW
Standby
49.0 L
Displacement
180.0 L
Oil capacity
1
Document types

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Specifications

Fuel#2 Diesel
Frequency60.0 Hz
Standby power1250 kW
Standby kVA1563
Prime power1125 kW
EmissionsTier 2
ControllerInteliGen NT
Oil capacity180.0 L
AlternatorPI734A-312 (4-pole, Class H insulation)
Voltage options220/380 V, 240/416 V, 254/440 V, 277/480 V, 347/600 V
Phase3
Rated current[1882, 1505] A
Power factor0.8
Battery cranking1100 CCA
Battery voltage24 V
Battery quantity4
Coolant capacity509.1 L
Max ambient45 °C
Dimensions (L×W×H)5385×2362×2743 mm
Dry weight11814 kg
Tank runtime[12, 24] hr

Engine

Mitsubishi S12R-Y2PTAW-1
Oil capacity180.0 L
Coolant capacity509.1 L
Displacement49.0 L
AspirationTurbocharged, Inter Cooler
Rated speed1800 rpm

Common questions

What is the power rating of the Generac IDLC1250?

The Generac IDLC1250 is rated 1250 kW standby (1563.0 kVA).

What engine does the Generac IDLC1250 use?

The Generac IDLC1250 is powered by the Mitsubishi S12R-Y2PTAW-1 engine.

What fuel does the Generac IDLC1250 use?

The Generac IDLC1250 runs on #2 Diesel.

What is the oil capacity of the Generac IDLC1250?

The Mitsubishi S12R-Y2PTAW-1 engine in the Generac IDLC1250 has an oil capacity of 180.0 liters.

What alternator does the Generac IDLC1250 use?

The Generac IDLC1250 uses a PI734A-312 alternator. It has 4 poles. Insulation class H.

Fuel consumption

RatingLoadL/hgal/h
Prime25%106.428.1
Prime50%180.247.6
Prime75%260.468.8
Prime100%355.894.0
Standby25%117.030.9
Standby50%198.052.3
Standby75%286.175.6
Standby100%391.0103.3

Available documents

Spec sheet — Generac 1250kW IDLC1250 Diesel Generator (Generac)Spec sheet — fm24792m idlc12502m specsheet (Generac)Spec sheet — idlc1250-1250kw-diesel-generator-specsheet (Generac)