HomeCaterpillarCaterpillar ESP 550

Caterpillar ESP 550 Generator Set

The Caterpillar ESP 550 is a 550 kW (688 kVA) standby generator set powered by a Caterpillar C15 ATAAC engine. It is available at 480 V, 3-phase and 60 Hz. It holds about 60 L (15.9 gal) of oil and 20.8 L (5.5 gal) of coolant, with a maximum ambient rating of 1445 °C. The set measures 3775.1×1110×2091 mm (148.6×43.7×82.3 in) and weighs about 4749 kg (10470 lb).

550 kW
Standby
15.2 L
Displacement
60.0 L
Oil capacity
1
Document types

How to read your Caterpillar serial & model number →

Specifications

Frequency60.0 Hz
Standby power550 kW
Standby kVA688
ControllerEMCP 4
Oil capacity60.0 L
AlternatorCaterpillar LC6114G
Voltage options480 V
Phase3-phase
Coolant capacity20.8 L
Max ambient1445 °C
Dimensions (L×W×H)3775×1110×2091 mm
Dry weight4749 kg

Engine

Caterpillar C15 ATAAC
Oil capacity60.0 L
Coolant capacity47.8 L
Displacement15.2 L
AspirationATAAC
Rated speed1800 rpm

Maintenance & consumables

for the Caterpillar C15 ATAAC
ItemSpecCapacityPart #Interval
Air filterHeavy duty air cleaner with service indicator1250 hr find
Fuel filterDuplex primary with integral water separator and change-over valve allowing filters to be changed while engine is running and engine mounted secondary1250 hr find
Oil filter2P40051250 hr PartsGeek ddtp $25.60
Belt1250 hr find
Coolant50/50 Ethylene Extended Life Glycol57.8 L1250 hr
Oil74 L (19.5 gal)74.0 L500 hr

Compatible filters for the Caterpillar C15 ATAAC — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: Donaldson P780006 Donaldson P781351
  • Fuel filter: Donaldson P551319
  • Fuel filter (primary): Donaldson P551319

Common questions

What is the power rating of the Caterpillar ESP 550?

The Caterpillar ESP 550 is rated 550 kW standby (688.0 kVA).

What engine does the Caterpillar ESP 550 use?

The Caterpillar ESP 550 is powered by the Caterpillar C15 ATAAC engine.

What is the oil capacity of the Caterpillar ESP 550?

The Caterpillar C15 ATAAC engine in the Caterpillar ESP 550 has an oil capacity of 60.0 liters.

What alternator does the Caterpillar ESP 550 use?

The Caterpillar ESP 550 uses a Caterpillar LC6114G alternator.

Fuel consumption

RatingLoadL/hgal/h
Standby75.020.6
Standby50%38.410.2
Standby75%75.519.9
Standby100%145.538.4

Available documents

Spec sheet — C15+550+ekw+Standby+Low+BSFC EMCP4 (Caterpillar)Spec sheet — C15+550+ekw+Standby+Tier2+Griffin+60+Hz EMCP4 (Caterpillar)