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Caterpillar XQ 500 Generator Set

The Caterpillar XQ 500 is a 500 kW (625 kVA) ULSD standby generator set powered by a Caterpillar 3456 ATAAC engine. It is available at 60 V, three-phase-phase and 60 Hz. It holds about 38 L (10.0 gal) of oil and 100.7 L (26.6 gal) of coolant, with a maximum ambient rating of 43 °C. The set measures 6096×2438×3810 mm (240.0×96.0×150.0 in), weighs about 15899 kg (35051 lb) and produces 72 dBA at 7 m. An integrated tank holds 700 L (184.9 gal), roughly 24 hours of runtime.

500 kW
Standby
15.8 L
Displacement
38.0 L
Oil capacity
1
Document types

How to read your Caterpillar serial & model number →

Specifications

FuelULSD
Frequency60.0 Hz
Standby power500 kW
Standby kVA625
Prime power455 kW
EmissionsEPA Tier 4 Interim
ControllerEMCP 4.4, EMCPII+
Oil capacity38.0 L
AlternatorCaterpillar SR4B
Voltage options12 V, 480/277 V, 240/139 V
Phasethree-phase
Circuit breaker2000 A
Battery quantity2
Coolant capacity100.7 L
Max ambient43 °C
Dimensions (L×W×H)6096×2438×3810 mm
Dry weight9512 kg
Sound level70.8 dBA @ 7 m
Fuel tank2445.0 L
Tank runtime24 hr

Engine

Caterpillar 3456 ATAAC
Oil capacity38.0 L
Coolant capacity64.0 L
Displacement15.8 L
Aspirationturbocharged-ataac
Rated speed1800 rpm

Maintenance & consumables

for the Caterpillar 3456 ATAAC
ItemSpecCapacityPart #Interval
Air filter10639735000 hr PartsGeek FridayParts $62.16
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 Glycol74.2 L1250 hr
Oil74 L (19.5 gal)74.0 L500 hr

Compatible filters for the Caterpillar 3456 ATAAC — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Fuel filter: Donaldson P551319 Caterpillar 1165436 Caterpillar 5134490 Donaldson P550625 Donaldson P551858
  • Fuel filter (primary): Donaldson P551319

Common questions

What is the power rating of the Caterpillar XQ 500?

The Caterpillar XQ 500 is rated 500 kW standby (625.0 kVA).

What engine does the Caterpillar XQ 500 use?

The Caterpillar XQ 500 is powered by the Caterpillar 3456 ATAAC engine.

What fuel does the Caterpillar XQ 500 use?

The Caterpillar XQ 500 runs on ULSD.

What is the oil capacity of the Caterpillar XQ 500?

The Caterpillar 3456 ATAAC engine in the Caterpillar XQ 500 has an oil capacity of 38.0 liters.

What alternator does the Caterpillar XQ 500 use?

The Caterpillar XQ 500 uses a Caterpillar SR4B alternator.

Fuel consumption

RatingLoadL/hgal/h
Prime50%99.026.2
Prime75%126.033.2
Prime100%
Standby100%137.436.3

Available documents

Spec sheet — LEHE2798-02 (Caterpillar)Spec sheet — LEHE2798 (Caterpillar)

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