Specifications
| Fuel | natural gas / LP |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 260 kW |
| Standby kVA | 325 |
| Prime power | 235 kW |
| Emissions | EPA-Certified |
| Controller | APM603, Decision-Maker 3000, Decision-Maker 550 |
| Oil capacity | 47.1 L |
| Alternator | 4UA13 (4-pole, Class H insulation) |
| Voltage options | 120/208 V, 127/220 V, 120/240 V, 139/240 V, 220/380 V, 240/416 V, 277/480 V, 347/600 V |
| Phase | 3 |
| Power factor | 0.8 |
| Battery cranking | 925 CCA |
| Battery voltage | 12 V |
| Battery quantity | 2 |
| Coolant capacity | 227.3 L |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 3500×1750×2148 mm |
| Sound level | 70.0 dBA @ 23 m |
Engine
| Oil capacity | 47.1 L |
|---|---|
| Coolant capacity | 43.2 L |
| Displacement | 14.6 L |
| Aspiration | Turbocharged, Aftercooled |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Doosan D146L| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil filter | ×2 | — |
Service specifications
30| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | 10 in. weld flange bolt circle diameter B | 361.95 | mm (14.25 in.) | |
| Other | 10 in. weld flange outside diameter C | 406.4 | mm (16.0 in.) | |
| Other | 10 in. weld flange quantity of bolts / bolt hole diameter D | 12, 25.40 | mm (1.00 in.) | |
| Other | 12 in. weld flange bolt circle diameter B | 431.80 | mm (17.00 in.) | |
| Other | 12 in. weld flange outside diameter C | 482.6 | mm (19.0 in.) | |
| Other | 12 in. weld flange quantity of bolts / bolt hole diameter D | 12, 25.40 | mm (1.00 in.) | |
| Other | 14 in. weld flange bolt circle diameter B | 476.25 | mm (18.75 in.) | |
| Other | 14 in. weld flange outside diameter C | 533.4 | mm (21.0 in.) | |
| Other | 14 in. weld flange quantity of bolts / bolt hole diameter D | 12, 28.58 | mm (1.13 in.) | |
| Other | 16 in. weld flange bolt circle diameter B | 539.75 | mm (21.25 in.) | |
| Other | 16 in. weld flange outside diameter C | 596.9 | mm (23.5 in.) | |
| Other | 16 in. weld flange quantity of bolts / bolt hole diameter D | 16, 28.58 | mm (1.13 in.) | |
| Other | 18 in. weld flange bolt circle diameter B | 577.85 | mm (22.75 in.) | |
| Other | 18 in. weld flange outside diameter C | 635.0 | mm (25.0 in.) | |
| Other | 18 in. weld flange quantity of bolts / bolt hole diameter D | 16, 31.75 | mm (1.25 in.) | |
| Other | 20 in. weld flange bolt circle diameter B | 635.00 | mm (25.00 in.) | |
| Other | 20 in. weld flange outside diameter C | 698.5 | mm (27.5 in.) | |
| Other | 20 in. weld flange quantity of bolts / bolt hole diameter D | 20, 31.75 | mm (1.25 in.) | |
| Other | 5 in. weld flange bolt circle diameter B | 215.90 | mm (8.50 in.) | |
| Other | 5 in. weld flange outside diameter C | 241.30 | mm (9.50 in.) | |
| Other | 5 in. weld flange quantity of bolts / bolt hole diameter D | 8, 22.23 | mm (0.88 in.) | |
| Other | 6 in. weld flange bolt circle diameter B | 254.0 | mm (10.0 in.) | |
| Other | 6 in. weld flange outside diameter C | 279.4 | mm (11.0 in.) | |
| Other | 6 in. weld flange quantity of bolts / bolt hole diameter D | 8, 22.23 | mm (0.88 in.) | |
| Other | 8 in. weld flange bolt circle diameter B | 298.45 | mm (11.75 in.) | |
| Other | 8 in. weld flange outside diameter C | 342.9 | mm (13.5 in.) | |
| Other | 8 in. weld flange quantity of bolts / bolt hole diameter D | 8, 22.23 | mm (0.88 in.) | |
| Other | Weld flange angle A (10, 12, 14 in. nominal pipe size) | 30 | deg. | |
| Other | Weld flange angle A (16, 18, 20 in. nominal pipe size) | 22.5 | deg. | |
| Other | Weld flange angle A (5, 6, 8 in. nominal pipe size) | 45 | deg. |
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 Kohler 250REZX?
The Kohler 250REZX is rated 260 kW standby (325.0 kVA).
Which engine powers the Kohler 250REZX?
The Kohler 250REZX is powered by the Doosan D146L engine.
What fuel does the Kohler 250REZX use?
The Kohler 250REZX runs on natural gas / LP.
What's the oil capacity on a Kohler 250REZX?
The Doosan D146L engine in the Kohler 250REZX has an oil capacity of 47.1 liters.
What alternator does the Kohler 250REZX use?
The Kohler 250REZX uses a 4UA13 alternator. It has 4 poles. Insulation class H.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 25% | 24.8 | 6.55 |
| Prime | 50% | 39.7 | 10.49 |
| Prime | 75% | 55.9 | 14.77 |
| Prime | 100% | 71.8 | 18.97 |
| Standby | 25% | 26.3 | 6.95 |
| Standby | 50% | 43.1 | 11.39 |
| Standby | 75% | 61.4 | 16.22 |
| Standby | 100% | 78.8 | 20.82 |
Available documents
Spec sheet (Kohler)Spec sheet — g4189 (Kohler)Reference (Kohler)Reference — 180-450REZX G6109 (Kohler)Reference — G6-39 0918AZ (Kohler)Reference — Kohler-Gas Generators Brochure (Kohler)Reference — vertical circulator plug in Kohler. G6171 (Kohler)Parts manual — tp6706 (Kohler)Service manual — TP-6832 1218G (Kohler)