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Cummins/Onan 620DFHA Generator Set

The Cummins/Onan 620DFHA is a 620 kW standby generator set powered by a Cummins/Onan QST30-G1 engine. It operates at 50 Hz and 3-phase. It holds about 132.5 L (35.0 gal) of oil and 200.6 L (53.0 gal) of coolant. The same QST30-G1 engine also powers generator sets from MQ Power.

620 kW
Standby
30.5 L
Displacement
132.5 L
Oil capacity
1
Document types

How to read your Cummins/Onan serial & model number →

Specifications

Frequency50.0 Hz
Standby power620 kW
ControllerPowerCommand 3100
Oil capacity132.5 L
Phase3
Battery voltage24 V

Engine

Cummins/Onan QST30-G1
Oil capacity132.5 L
Coolant capacity200.6 L
Displacement30.5 L
AspirationTurbocharged and Aftercooled
Rated speed1800 rpm

Filters for the Cummins/Onan QST30-G1

4

Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.

Listed for this engine in only one kind of machine, so they may depend on how the engine was installed:

SystemFilterDescriptionCross-references
Oil filterP551670Lube Filter, Spin-On Full FlowCUMMINS 298670, CUMMINS 299670, NAPA 1970, CARBOCOL 0026 FridayParts $26.68
Oil filterP559000Lube Filter, Spin-On Full FlowCUMMINS 2101869, CUMMINS 2882674, NAPA 400107, BALDWIN BD7154 KuduParts $17.00 FridayParts $36.00
Fuel / water separatorP552216Fuel Filter, Water Separator Spin-On Twist&DrainCUMMINS 3309437, CUMMINS 3313304, NAPA 3613, BALDWIN BF1216 buy
Fuel / water separatorP552006Fuel Filter, Water Separator Spin-On Twist&DrainCUMMINS 3089916, CUMMINS 4095189, NAPA 3645, BALDWIN BF1262 FridayParts $42.88

Same engine, other brands

1 brand

The Cummins/Onan QST30-G1 in this set also powers 1 generator set sold under 1 other brand. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

BrandModels
MQ PowerEGC-750C

Maintenance & consumables

for the Cummins/Onan QST30-G1
ItemSpecCapacityPart #Interval
Air filterDry, Dual Element—
Fuel filter2—
Oil filter4 Spin-on, Full Flow—
Battery24 VDC—
BeltBelt Driven—
Coolant—
Oil—
Spark plugnot specified—

Common questions

What is the power rating of the Cummins/Onan 620DFHA?

The Cummins/Onan 620DFHA is rated 620 kW standby.

Which engine powers the Cummins/Onan 620DFHA?

The Cummins/Onan 620DFHA is powered by the Cummins/Onan QST30-G1 engine.

What's the oil capacity on a Cummins/Onan 620DFHA?

The Cummins/Onan QST30-G1 engine in the Cummins/Onan 620DFHA has an oil capacity of 132.5 liters.

What is the cooling system capacity of the Cummins/Onan 620DFHA?

The Cummins/Onan 620DFHA cooling system holds 200.6 liters (53.0 US gallons) for the engine, per the manufacturer specification sheet.

Parts

5
Part #DescriptionQtySystem
140-3288-02Cleaner, Air2Air filter Amazon eBay
193-0465Sender, Oil Temperature (E4)2Sensor Amazon eBay $62.11
309-0269Sender, Temperature-Lo Engine1Sensor Amazon eBay $239.00
501-0698Line, Flex Fuel (Fuel Out)1Hose Amazon eBay
501-0795Line, Flex Fuel (Fuel In)1Hose 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.

Available documents

Parts manual — 0961-0205 I10 201608 (Cummins/Onan)

This page was generated from the 1 manufacturer document above by automated extraction; every figure shown is copied from one of them. How the data is compiled.