Specifications
| Frequency | 60.0 Hz |
|---|---|
| Standby power | 750 kW |
| Controller | PowerCommand 3100 |
| Oil capacity | 132.5 L |
| Phase | 3 |
| Battery voltage | 24 V |
Engine
| Oil capacity | 132.5 L |
|---|---|
| Coolant capacity | 200.6 L |
| Displacement | 30.5 L |
| Aspiration | Turbocharged and Aftercooled |
| Rated speed | 1800 rpm |
Filters for the Cummins/Onan QST30-G1
4Engine-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:
| System | Filter | Description | Cross-references | |
|---|---|---|---|---|
| Oil filter | P551670 | Lube Filter, Spin-On Full Flow | CUMMINS 298670, CUMMINS 299670, NAPA 1970, CARBOCOL 0026 | FridayParts $26.68 |
| Oil filter | P559000 | Lube Filter, Spin-On Full Flow | CUMMINS 2101869, CUMMINS 2882674, NAPA 400107, BALDWIN BD7154 | KuduParts $17.00 FridayParts $36.00 |
| Fuel / water separator | P552216 | Fuel Filter, Water Separator Spin-On Twist&Drain | CUMMINS 3309437, CUMMINS 3313304, NAPA 3613, BALDWIN BF1216 | buy |
| Fuel / water separator | P552006 | Fuel Filter, Water Separator Spin-On Twist&Drain | CUMMINS 3089916, CUMMINS 4095189, NAPA 3645, BALDWIN BF1262 | FridayParts $42.88 |
Same engine, other brands
1 brandThe 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.
| Brand | Models |
|---|---|
| MQ Power | EGC-750C |
Maintenance & consumables
for the Cummins/Onan QST30-G1| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Dry, Dual Element | — | |||
| Fuel filter | 2 | — | |||
| Oil filter | 4 Spin-on, Full Flow | — | |||
| Battery | 24 VDC | — | |||
| Belt | Belt Driven | — | |||
| Coolant | — | ||||
| Oil | — | ||||
| Spark plug | not specified | — |
Service specifications
12| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Pressure | Max Back Pressure | 41.0 | in. H2O (10.2 kPa) | |
| Pressure | Max. Static Restriction | 0.50 | in H2O (124.50 Pa) | |
| Pressure | Maximum Air Cleaner Restriction | 25.0 | in. H2O (6.2 kPa) | |
| Pressure | Maximum Coolant Friction Head | 10.0 | psi (68.9 kPa) | |
| Pressure | Maximum Coolant Static Head | 46.0 | ft (14.0 m) | |
| Pressure | Maximum Inlet Restriction | 4.0 | in. Hg (101.6 mm Hg) | |
| Pressure | Maximum Return Restriction | 10.0 | in. Hg (254.0 mm Hg) | |
| Speed | Overspeed Limit | 2100 ±50 | rpm | |
| Temperature | Exhaust Temperature | 850.0 | °F (454.4 °C) | Prime, at rated load |
| Temperature | Exhaust Temperature | 895.0 | °F (479.4 °C) | Standby, at rated load |
| Temperature | Standard Temperature Rise | 125 | °C | Standby |
| Voltage | Voltage Regulation, No Load to Full Load | ±0.5% |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Recommended fluids
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Fuel | number 2 diesel fuel | Direct injection |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Common questions
How many kW is the Cummins/Onan 750DFHA?
The Cummins/Onan 750DFHA is rated 750 kW standby.
What engine does the Cummins/Onan 750DFHA use?
The Cummins/Onan 750DFHA is powered by the Cummins/Onan QST30-G1 engine.
What is the oil capacity of the Cummins/Onan 750DFHA?
The Cummins/Onan QST30-G1 engine in the Cummins/Onan 750DFHA has an oil capacity of 132.5 liters.
How much coolant does the Cummins/Onan 750DFHA hold?
The Cummins/Onan 750DFHA cooling system holds 200.6 liters (53.0 US gallons) for the engine, per the manufacturer specification sheet.
Parts
5| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 140-3288-02 | Cleaner, Air | 2 | Air filter | Amazon eBay |
| 193-0465 | Sender, Oil Temperature (E4) | 2 | Sensor | Amazon eBay $62.11 |
| 309-0269 | Sender, Temperature-Lo Engine | 1 | Sensor | Amazon eBay $239.00 |
| 501-0698 | Line, Flex Fuel (Fuel Out) | 1 | Hose | Amazon eBay |
| 501-0795 | Line, Flex Fuel (Fuel In) | 1 | Hose | 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
This page was generated from the 2 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.