Specifications
| Fuel | Diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 1750 kW |
| Prime power | 1600 kW |
| Emissions | Tier 2 |
| Controller | PowerCommand 3.3 |
| Oil capacity | 334.0 L |
| Alternator | P734F |
| Voltage options | 346/600 V, 220/380 V, 240/416 V, 254/440 V, 277/480 V |
| Phase | 3 |
| Power factor | 0.8 |
| Circuit breaker | 2500 A |
| Max ambient | 60.3 °C |
| Sound level | 99.4 dBA @ 7 m |
Engine
| Oil capacity | 334.0 L |
|---|---|
| Coolant capacity | 492.0 L |
| Displacement | 60.2 L |
| Aspiration | Turbocharged and low temperature after-cooled |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Cummins/Onan QSK60-G6 NR2| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Dry replaceable element | — | |||
| Fuel filter | Dual element, 10 micron filtration, spin-on fuel filters with 15 micron water separator | — | |||
| Oil filter | Four spin-on, combination full flow filter and bypass filters | — | |||
| Battery | 2200 amps minimum at -18C to 0C ambient, 24 volt negative ground | — | |||
| Coolant | Coolant capacity with standard set-mounted radiator | 492.0 L | — | ||
| Oil | Lube oil capacity | 334.0 L | — |
Service specifications
39| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | AC waveform THD (THDV) | < 5 | % | no load to full linear load |
| Other | BMEP at set rated load (prime) | 1885 | kPa | prime rating |
| Other | BMEP at set rated load (standby) | 2109 | kPa | standby rating |
| Other | Breaker fail to synchronize default time delay | 120 | s | adjustable 10–900 s |
| Other | Derate above 1402 m (4600 ft) / 40 °C | 4.5% per 305 m (1000 ft) and 11.0% per 10 °C (18 °F) | standby and prime | |
| Other | High AC voltage shutdown default | 110% | % of nominal voltage | for 10 s; adjustable 105–125%, 0.1–10 s |
| Other | Instantaneous pickup (Ii) range (Micrologic 3.0 and 5.0) | 1.5–12 x In | x In | |
| Other | Long-time delay tr | 0.5–24 | s | at 6 x Ir |
| Other | Long-time pickup (Ir) adjustment range | 0.4–1.0 x In | x In | sensor plug rating In |
| Other | Low AC voltage shutdown default | 85% | % of reference voltage | for 10 s; adjustable 50–95%, 2–20 s |
| Other | Over frequency shutdown/warning default | 6 | Hz above nominal | for 20 s, disabled; adjustable 2–10 Hz above set point, 1–20 s |
| Other | Over load (kW) warning default | 105% | % of rated kW | adjustment range 80–140%, 0–120 s delay; default 60 s |
| Other | Piston speed | 11.4 | m/s | |
| Other | Reverse Var shutdown default | 20% | % of rated Var | for 10 s; adjustable 15–50%, 10–60 s |
| Other | Reverse power shutdown default | 10% | % of standby kW | for 3 s; adjustable 5–20%, 1–15 s |
| Other | Short circuit protection threshold | 175% | % of rating | output current on any phase |
| Other | Telephone Harmonic Factor (THF) | < 3 | ||
| Other | Telephone Influence Factor (TIF) | < 50 | per NEMA MG1-22.43 | |
| Other | Under frequency shutdown default | 6 | Hz below reference | for 10 s; adjustable 2–10 Hz below set point, 5–20 s |
| Other | Wire stripping length | 1.38 In (35 mm) | in | |
| Pressure | Maximum air cleaner restriction | 6.2 | kPa | |
| Pressure | Maximum back pressure | 6.8 | kPa | exhaust |
| Pressure | Maximum cooling air flow static restriction | 0.12 | kPa | |
| Pressure | Maximum fuel inlet restriction | 30 | kPa | |
| Pressure | Maximum fuel return line restriction | 34 | kPa | |
| Speed | Frequency regulation | Isochronous | ||
| Speed | Overspeed limit | 2100 ±50 | rpm | |
| Speed | Random frequency variation | ± 0.25 | % | |
| Speed | Rated speed | 1800 | rpm | 60 Hz |
| Temperature | Ambient design (standard set-mounted radiator) | 50 | °C | |
| Temperature | Exhaust temperature at set rated load (prime) | 463 | °C | prime |
| Temperature | Exhaust temperature at set rated load (standby) | 469 | °C | standby |
| Temperature | Maximum aftercooler inlet temp | 49 | °C | |
| Temperature | Maximum fuel inlet temperature | 71 | °C | |
| Temperature | Maximum jacket water outlet temp (remote radiator) | 104 | °C | standby |
| Torque | Circuit breaker terminal tightening torque (AWG 1/0...750 kcmil) | 548.75 Lbf.In (62 N.m) | Lbf.In | 0.08…0.62 in² (50…400 mm²) |
| Voltage | Random voltage variation | ± 0.5 | % | |
| Voltage | Standard temperature rise | 150 | °C | Standby at 40 °C ambient |
| 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 | ASTM D975 No. 2-D | ASTM D975 | Cetane number: 40-50. 300-500 ppm Sulfur. Fuel inlet temperature 40°C (104°F) reference. |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Fault codes
10| Code | Name | Meaning | Severity | Action |
|---|---|---|---|---|
| 27 | Low AC voltage shutdown | Voltage on any phase has dropped below a preset value. | Shutdown | Adjustable 50-95% of reference voltage, time delay 2-20 seconds; default 85% for 10 seconds. |
| 32 | Reverse power shutdown | Reverse power detected. | Shutdown | Adjustment range 5-20% of standby kW rating, delay 1-15 seconds; default 10%, 3 seconds. |
| 40 | Reverse Var shutdown | Reverse reactive power detected. | Shutdown | Adjustable 15-50% of rated Var output, delay 10-60 seconds; default 20%, 10 seconds. |
| 46 | Negative sequence overcurrent warning | Excessive imbalances in the three phase load currents and/or power factors. | Warning | Control protects generator from damage due to phase imbalance. |
| 51 | Overcurrent warning/shutdown | Implementation of the thermal damage curve with instantaneous trip level based on CT ratio and application power rating. | Shutdown | AmpSentry protective relay action; see document R1053 time over current curve. |
| 51G | Ground fault overcurrent | Detects a ground fault via external ground fault relay contact input or measured ground current from external CT. | Shutdown | Time delays and thresholds adjustable via InPower or HMI. |
| 59 | High AC voltage shutdown | Output voltage on any phase exceeds preset values; trip time inversely proportional to amount above threshold. | Shutdown | Adjustable 105-125% of nominal voltage, time delay 0.1-10 seconds; default 110% for 10 seconds. |
| 81 u | Under Frequency Shutdown | Genset output frequency cannot be maintained. Adjustable 2-10 Hz below reference governor set point, time delay 5-20 s. Default 6 Hz, 10 s. | Shutdown | |
| 81o | Over frequency shutdown/warning | Genset is operating at a potentially damaging frequency level. | Warning | Adjustable 2-10 Hz above nominal governor set point, 1-20 second delay; default 6 Hz, 20 seconds, disabled. |
| 81u | Under frequency shutdown | Genset output frequency cannot be maintained. | Shutdown | Adjustable 2-10 Hz below reference governor set point, 5-20 second delay; default 6 Hz, 10 seconds. |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Procedures
3Trip Unit Operation Verification diagnostic
Tools: Trip unit test kit
- Connect a test kit to the trip unit test plug receptacle.
- Perform verification tests per instructions shipped with the test kit to verify trip unit functions.
Battery replacement / battery rack installation maintenance
- Isolate DC supply before working on battery connections.
- Install battery rack with hold-down, floor standing.
- Install battery with minimum 2200 amps capacity at -18 °C to 0 °C.
- Verify 24 volt negative ground connection.
Trip Unit Switch Adjustment operation
⚠ Wait a minimum of 15 minutes after circuit breaker trips before resetting to allow thermal imaging to reset completely to zero.
Tools: Wire seal MICROTUSEAL
- Open switch cover.
- Adjust the appropriate switches to desired values.
- Replace switch cover.
- Use wire seal MICROTUSEAL, if necessary, to provide tamper evidence.
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Voltage reconnection
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| 12470-13800 | 3 | Wye, 3-phase | Winding no. 6062 | Temp rise 125/105/80 °C; ADS-521; feature code B448; max surge kVA 91 |
| 220/380 | 3 | 6 leads | 6 | Winding no. 13; 125°C rise rating 2004 kW / 2505 kVA; stator resistance L-L 0.00102 Ohms; rotor resistance 2.31 Ohms @22°C |
| 240/416 | 3 | 6 leads | 6 | Winding no. 13; 125°C rise rating 2004 kW / 2505 kVA; stator resistance L-L 0.00102 Ohms; rotor resistance 2.31 Ohms @22°C |
| 254/440 | 3 | 6 leads | 6 | Winding no. 312; 125°C rise rating 2000 kW / 2500 kVA; stator resistance L-L 0.00152 Ohms; rotor resistance 2.31 Ohms @22°C |
| 277/480 | 3 | 6 leads | 6 | Winding no. 312; 125°C rise rating 2080 kW / 2600 kVA; stator resistance L-L 0.00152 Ohms; rotor resistance 2.31 Ohms @22°C |
| 277/480 | 3 | Wye, 4 Wire | Feature code R002-2 Voltage-277/480, 3 Phase, Wye, 4 Wire | |
| 346/600 | 3 | 6 leads | 6 | Winding no. 07; 125°C rise rating 2080 kW / 2600 kVA; stator resistance L-L 0.00220 Ohms; rotor resistance 2.31 Ohms @22°C |
| 380 | 3 | Wye, 3-phase | Winding no. 7327 | Temp rise 150/125/105 °C; ADS-335; feature code B595; max surge kVA 312 |
| 4160 | 3 | Wye, 3-phase | Winding no. 6307 | Temp rise 125/105/80 °C; ADS-324; feature code B467; max surge kVA 51 |
| 480 | 3 | Wye, 3-phase | Winding no. 7361 | Temp rise 125/105/80 °C; ADS-333; feature code B462; max surge kVA 312 |
| 600 | 3 | Wye, 3-phase | Winding no. 7361 | Temp rise 125/105/80 °C; ADS-333; feature code B465; max surge kVA 07 |
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
What size generator is the Cummins/Onan 1750DQKAA?
The Cummins/Onan 1750DQKAA is rated 1750 kW standby.
What engine is in the Cummins/Onan 1750DQKAA?
The Cummins/Onan 1750DQKAA is powered by the Cummins/Onan QSK60-G6 NR2 engine.
What fuel does the Cummins/Onan 1750DQKAA use?
The Cummins/Onan 1750DQKAA runs on Diesel.
How much oil does the Cummins/Onan 1750DQKAA take?
The Cummins/Onan QSK60-G6 NR2 engine in the Cummins/Onan 1750DQKAA has an oil capacity of 334.0 liters.
What is the coolant capacity of the Cummins/Onan 1750DQKAA?
The Cummins/Onan 1750DQKAA cooling system holds 492 liters (130.0 US gallons) for the engine, per the manufacturer specification sheet.
What is the prime power rating of the Cummins/Onan 1750DQKAA?
The Cummins/Onan 1750DQKAA is rated 1600 kW prime, against 1750 kW standby.
How loud is the Cummins/Onan 1750DQKAA?
The Cummins/Onan 1750DQKAA is rated at 99.4 dBA at 7 m, per the manufacturer specification sheet.
What voltage does the Cummins/Onan 1750DQKAA produce?
The Cummins/Onan 1750DQKAA is offered in 346/600 V, 220/380 V, 240/416 V, 254/440 V, 277/480 V, 3-phase.
What alternator does the Cummins/Onan 1750DQKAA use?
The Cummins/Onan 1750DQKAA uses a P734F alternator.
Troubleshooting
4Symptoms & remedies
| Symptom | Remedy |
|---|---|
| Battle short mode | Please refer to the Control Application Guide or Manual for list of these faults. |
| Derate | The Derate function reduces output power of the genset in response to a fault condition. If a Derate command occurs while operating on an isolated bus, the control will issue commands to reduce the load on the genset via contact closures or Modbus. If a Derate command occurs while in utility parallel mode, the control will actively reduce power by lowering the base load kW to the derated target kW. |
| Emergency stop | Annunciated whenever either emergency stop signal is received from external switch. |
| General prime mover protection - Low and high battery voltage warning | Indicates status of battery charging system (failure) by continuously monitoring battery voltage. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 25% | 159.0 | 42.0 |
| Prime | 50% | 246.0 | 65.0 |
| Prime | 75% | 337.0 | 89.0 |
| Prime | 100% | 424.0 | 112.0 |
| Standby | 25% | 167.0 | 44.0 |
| Standby | 50% | 261.0 | 69.0 |
| Standby | 75% | 356.0 | 94.0 |
| Standby | 100% | 458.0 | 121.0 |
Available documents
Spec sheet — New-Cummins-DQKAA-submittal (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.