Kubota Series 24kW / 30kVA Diesel Generator Set
For different market requirements, SWT can provide open type, silent type and super-silent type generator sets. Optional ATS, communication modules, cloud monitoring and customized enclosure solutions are available according to project needs.
- Powered by Kubota V3300-BG diesel engine
- 50Hz and 60Hz configurations available
- Three-phase and single-phase versions available
- Open type, silent type and super-silent type options
- Factory load tested at 0%, 25%, 50%, 75%, 100% and 110% before delivery
- Standard single-unit control system with LCD display, protection functions and event logs
- Optional ATS and SWT paralleling system available for project-based configurations
Available Models
| Model | Frequency | Phase / Voltage | Prime Power | Standby Power | Rated Speed |
| SK32.5 | 50Hz | 3-phase, 380/400/415V | 24kW / 30kVA | 26kW / 32.5kVA | 1500r/min |
| SK32.5-1P | 50Hz | Single phase, 230V | 24kW / 30kVA | 26kW / 32.5kVA | 1500r/min |
| SK40.4X | 60Hz | 3-phase, 220/127V | 29.4kW / 37kVA | 32.3kW / 40.4kVA | 1800r/min |
| SK40.4X-1P | 60Hz | Single phase, 240V | 29.4kW / 37kVA | 32.3kW / 40.4kVA | 1800r/min |
Technical Specifications
| Item | 50Hz Three-phase | 50Hz Single-phase | 60Hz Three-phase | 60Hz Single-phase |
| Genset Model | SK32.5 | SK32.5-1P | SK40.4X | SK40.4X-1P |
| Prime Power | 24kW / 30kVA | 24kW / 30kVA | 29.4kW / 37kVA | 29.4kW / 37kVA |
| Standby Power | 26kW / 32.5kVA | 26kW / 32.5kVA | 32.3kW / 40.4kVA | 32.3kW / 40.4kVA |
| Frequency | 50Hz | 50Hz | 60Hz | 60Hz |
| Rated Speed | 1500r/min | 1500r/min | 1800r/min | 1800r/min |
| Rated Voltage | 380/400/415V | 230V | 220/127V | 240V |
| Power Factor | 0.8 | 0.8 | 0.8 | 0.8 |
| Engine Model | Kubota V3300-BG | Kubota V3300-BG | Kubota V3300-BG | Kubota V3300-BG |
| Operation Conditions | <=40 deg C, <=1000m altitude, <=60% humidity | <=40 deg C, <=1000m altitude, <=60% humidity | <=40 deg C, <=1000m altitude, <=60% humidity | <=40 deg C, <=1000m altitude, <=60% humidity |
Dimensions and Weight
| Model | Open Type | Silent Type | Super-Silent Type |
| SK32.5 50Hz 3-phase | 1910 x 730 x 1170 mm / 780kg | 2215 x 1000 x 1550 mm / 920kg | 2300 x 1120 x 1750 mm / to be confirmed |
| SK32.5-1P 50Hz single-phase | 1910 x 730 x 1170 mm / 780kg | 2215 x 1000 x 1550 mm / 980kg | 2300 x 1120 x 1750 mm / to be confirmed |
| SK40.4X 60Hz 3-phase | 1910 x 730 x 1170 mm / 780kg | 2215 x 1000 x 1550 mm / 940kg | 2300 x 1120 x 1750 mm / to be confirmed |
| SK40.4X-1P 60Hz single-phase | 1910 x 730 x 1170 mm / 780kg | 2215 x 1000 x 1550 mm / 910kg | 2300 x 1120 x 1750 mm / to be confirmed |
Internal note: the uploaded EN and CN specifications show different super-silent weights in several models. Please confirm the final super-silent weight before publishing the website page.
Engine Specifications – Kubota V3300-BG
| Item | Specification |
| Manufacturer | Kubota |
| Engine Model | V3300-BG |
| Aspiration | Naturally aspirated |
| Cooling Method | Water-cooling |
| Number of Cylinders / Arrangement | 4 / in-line |
| Displacement | 3.318L |
| Bore x Stroke | 98mm x 110mm |
| Compression Ratio | 22.6:1 |
| Prime / Standby Engine Power at 50Hz | 35.8kW / 39.3kW |
| Prime / Standby Engine Power at 60Hz | 32.1kW / 35.3kW |
| Dry Weight | 241kg |
| Injection Pump | Bosch type |
| Fuel Injection Pressure | 13.73MPa |
| Fuel Injection Timing | 10 degrees before T.D.C. |
| Max Allowable Exhaust Back Pressure | 7.07kPa |
| Max Allowable Intake Air Restriction | 1.96kPa |
| Coolant Capacity | 12.5L |
| Lubricating Oil Capacity | 13.2L |
| Starter Output | 12V-2.5kW |
| Alternator Output | 12V-45A |
Alternator Specifications
| Item | 50Hz 3-phase | 50Hz Single-phase | 60Hz 3-phase | 60Hz Single-phase |
| Rated Voltage | 380/400/415V | 230V | 220/127V | 240V |
| Rated Frequency | 50Hz | 50Hz | 60Hz | 60Hz |
| Rated Power | 22kW / 27.5kVA | 28kW / 35kVA | 31.4kW / 39.2kVA | 30kW / 37.5kVA |
| Power Factor | 0.8 | 0.8 | 0.8 | 0.8 |
| Phase | 3 | 1 | 3 | 1 |
| Insulation Class | H | H | H | H |
| Temperature Rise Class | H | H | H | H |
| Protection | IP23 | IP23 | IP23 | IP23 |
| Connection Type | Star | Star | Star | Star |
| Poles | 4 | 4 | 4 | 4 |
| Waveform Distortion THD | <5% | <5% | <5% | <5% |
| Telephone Interference THF | <2% | <2% | <2% | <2% |
Control System
The standard SWT single-unit control system provides LCD display, key operation, multilingual display, engine and alternator parameter detection, protection functions, local and remote start, event logs and multiple communication interfaces. The overall protection level can reach IP65 depending on the selected controller and cabinet configuration.
- LCD screen and key operation
- Control and protection functions
- Engine and alternator parameter detection
- Local and remote start
- Multiple communication interfaces available
- Event logs and real-time clock
- PC software configuration via USB interface
- Fuel quantity detection and low oil level alarm
- Voltage and current measurement
- Generator / mains circuit breaker control
ATS Optional
An ATS panel can be supplied as an optional accessory for mains-to-generator or mains-to-mains automatic transfer applications. The ATS controller integrates measurement, display and control functions. With PC-level switch and electromagnetic drive structure, the system can realize fast on-load switching between two power sources, with switching time up to <=80ms according to the specification.
SWT Paralleling System Optional
For projects requiring multiple generator sets, SWT can provide a paralleling system for genset-to-genset, genset-to-grid and paralleling with ATS applications. The system can support automatic synchronizing of up to 32 units, automatic start, automatic load sharing, automatic unit input or exit according to load demand, and automatic unloading and cooling down after mains power returns to normal.
Applications
- Commercial backup power for shops, offices and small facilities
- Farm and rural power supply
- Construction site temporary power
- Telecom stations and small infrastructure sites
- Emergency standby power for public facilities
- Outdoor power supply and mobile equipment support
- Small industrial workshops and machinery power
- Single-phase power supply for regional market requirements
Why Choose SWT Kubota Series Diesel Generator Set?
- Compact power solution: suitable for small and medium standby or temporary power applications.
- Kubota engine: powered by Kubota V3300-BG, a compact four-cylinder water-cooled diesel engine.
- Flexible output options: 50Hz / 60Hz, three-phase and single-phase versions are available.
- Multiple enclosure choices: open, silent and super-silent structures can be selected according to the project environment.
- Strict factory testing: each unit is tested at 0%, 25%, 50%, 75%, 100% and 110% load before delivery.
- Easy operation: LCD control system, event logs, protection functions and local / remote start are available.
- Project customization: ATS, communication modules, cloud monitoring, trailer and enclosure customization can be provided.
Standard Accessories
- Engine
- Alternator
- Chassis
- Control box
- Controller for single unit
- Circuit breaker
- Industrial muffler
- Test report
- Certificate of quality
- Schematic diagram
- Installation manual
- Operation manual
Optional Accessories
- Daily fuel tank / bulk fuel tank
- Residential silencer
- Power cable
- Anti-condensation heater for alternator
- Battery charger
- Water jacket heater
- Oil heater
- Fuel level sensor
- Auto oil make-up device
- Auto fuel filling device
- Soundproof enclosure
- Containerized enclosure
- Trailer
- Exhaust pipe
- Hot air discharge duct
- RS485 extension module
- Ethernet communication
- Cloud monitoring
- ATS panel
- Motorized circuit breaker
- Synchronizing system
- Spare parts
FAQ
Q1: What is the prime power of the SK32.5 generator set?
A: The SK32.5 50Hz model provides 24kW / 30kVA prime power and 26kW / 32.5kVA standby power.
Q2: Is a 60Hz version available?
A: Yes. The SK40.4X 60Hz model provides 29.4kW / 37kVA prime power and 32.3kW / 40.4kVA standby power.
Q3: What engine does this generator set use?
A: The series is powered by a Kubota V3300-BG diesel engine, a naturally aspirated, water-cooled, four-cylinder in-line engine.
Q4: Can SWT provide single-phase versions?
A: Yes. SK32.5-1P is available for 50Hz 230V single-phase applications, and SK40.4X-1P is available for 60Hz 240V single-phase applications.
Q5: What enclosure types are available?
A: Open type, silent type and super-silent type configurations are available. Final dimensions and weights should be confirmed according to the selected configuration.
Q6: Can this generator work with ATS?
A: Yes. ATS is available as an optional accessory for automatic transfer between mains power and generator power.
Q7: What tests are carried out before delivery?
A: Each unit passes load tests at 0%, 25%, 50%, 75%, 100% and 110%, as well as inspection of protection devices and control systems before factory delivery.
Q8: What applications is this generator suitable for?
A: It is suitable for commercial backup power, farms, construction sites, telecom stations, emergency standby power, outdoor power supply and small industrial applications.
