Kubota Series Small Diesel Generator Set
Powered by Kubota diesel engines and matched with SWT generator set integration, the series is available in open type, silent type and super silent type configurations. Single-phase and three-phase voltage options are available according to project requirements.
- Kubota diesel engines with naturally aspirated or turbocharged options.
- 50Hz and 60Hz models for different market requirements.
- Single-phase and three-phase output options.
- Open type, silent type and super silent type configurations.
- Water-cooled engine design for stable operation.
- Standard control system with LCD display, protection functions and event logs.
- ATS and paralleling system available as optional configurations.
- Factory-tested before delivery at 0%, 25%, 50%, 75%, 100% and 110% load.
Model Range and Main Specifications
| Model | Engine | Freq. | Speed | Phase | Voltage | Prime Power | Standby Power | Aspiration | Configuration |
| SK8.3-1P | D1105-BG | 50Hz | 1500r/min | 1-phase | 230V | 6kW / 7.5kVA | 6.6kW / 8.3kVA | Naturally aspirated | Open / Silent / Super Silent |
| SK16.5-1P | D1703-BG | 50Hz | 1500r/min | 1-phase | 230V | 12kW / 15kVA | 13.2kW / 16.5kVA | Naturally aspirated | Open / Silent / Super Silent |
| SK25-1P | V2003-T-BG | 50Hz | 1500r/min | 1-phase | 230V | 18kW / 23kVA* | 20kW / 25kVA | Turbocharged | Open / Silent / Super Silent |
| SK32.5 | V3300-BG | 50Hz | 1500r/min | 3-phase | 380/400/415V | 24kW / 30kVA* | 26kW / 32.5kVA | Naturally aspirated | Open / Silent / Super Silent |
| SK8.8X-1P | D1105-BG | 60Hz | 1800r/min | 1-phase | 240V | 6.4kW / 8kVA | 7kW / 8.75kVA | Naturally aspirated | Open / Silent / Super Silent |
| SK16.5X-1P | V1505-BG | 60Hz* | 1800r/min | 1-phase | 240V | 12kW / 15kVA | 13.2kW / 16.5kVA | Naturally aspirated | Open / Silent / Super Silent |
| SK30X | V2003-T-BG | 60Hz | 1800r/min | 3-phase | 220/127V | 22kW / 27kVA | 24.2kW / 30kVA | Turbocharged | Open / Silent / Super Silent |
| SK30X-1P | V2003-T-BG | 60Hz | 1800r/min* | 1-phase | 240V | 22kW / 27kVA* | 24.2kW / 30kVA | Turbocharged | Open / Silent / Super Silent |
Alternator and Electrical System
The alternator system is configured according to the selected generator set model. Available voltage options include 230V, 240V, 220/127V and 380/400/415V. Frequency options include 50Hz and 60Hz. The alternator configuration supports power factor 0.8, insulation class H, temperature rise class H and IP23 protection.
- Frequency: 50Hz or 60Hz, depending on model.
- Voltage options: 230V, 240V, 220/127V or 380/400/415V.
- Phase options: single-phase and three-phase.
- Insulation class: H.
- Temperature rise class: H.
- Protection class: IP23.
- Waveform distortion (THD): <5%.
- Telephone interference factor (THF): <2%.
SWT Control System – Standard
The standard SWT single-unit control system is designed for convenient operation and generator set protection. It supports LCD display, multilingual interface, local and remote start, engine and alternator parameter monitoring, event logs and optional communication interfaces.
- LCD screen and key operation.
- Multilingual display.
- Engine and alternator parameter detection.
- Local and remote start.
- Control and protection functions.
- Event logs with real-time clock.
- Multiple communication interfaces available.
- IP65 overall protection available according to configuration.
ATS Optional
An ATS panel is available as an optional accessory for mains-to-generator or mains-to-mains applications. The ATS controller combines measurement, display and automatic control functions, helping realize automatic transfer when utility power fails.
- Microcomputer control and digital technology.
- LCD display for ATS operating status and controller mode.
- Voltage and frequency measurement through LCD screen.
- Fast on-load switching of two power sources, with switching time up to <=80ms according to specification.
- Electrical and mechanical double interlock design to prevent short circuit between two power sources.
SWT Paralleling System Optional
For larger power demand or flexible load management, SWT can provide a paralleling system for genset-to-genset or genset-to-grid applications. The system can support automatic synchronising of up to 32 units and automatic unit loading/unloading according to load demand.
- Automatic synchronising for multiple generator sets.
- Genset-to-genset and genset-to-grid applications.
- PLC system and touch screen available upon request.
- Automatic load-based unit start/stop to improve fuel economy.
- Easy future capacity expansion.
Applications
The Kubota Series small diesel generator set is suitable for applications requiring compact, reliable and easy-to-deploy power supply.
- Residential backup power.
- Small commercial buildings and shops.
- Telecom stations and communication sites.
- Construction site temporary power.
- Outdoor worksite and mobile power supply.
- Rental power applications.
- Farm and small workshop power supply.
- Emergency standby power for essential equipment.
- Remote site auxiliary power.
Why Choose SWT Kubota Series Small Diesel Generator Set?
- Compact design: suitable for sites with limited installation space.
- Flexible power range: covering multiple power levels from small standby units to 30kVA-class models.
- Quiet configuration options: silent and super silent enclosures are available for noise-sensitive applications.
- Reliable engine platform: Kubota engines are used across the series for stable performance and easy maintenance.
- Multiple voltage options: single-phase and three-phase models can meet different market and project requirements.
- Factory-tested quality: every unit is tested before delivery to verify load performance and protection functions.
- Optional automation: ATS and remote monitoring can be configured according to project needs.
Standard Accessories
- Test report
- Certificate of quality
- Schematic diagram
- Installation manual
- Operation manual
- Engine
- Alternator
- Chassis
- Control box
- Controller for single unit
- Circuit breaker where applicable
- Industrial muffler
- Shock absorber
Optional Accessories
- Daily fuel tank or bulk fuel tank
- Residential silencer
- Power cable
- Anti-condensation heater for alternator
- Battery charger
- Water jacket heater
- Oil heater
- Fuel level sensor
- Auto fuel filling device
- Soundproof enclosure
- Super silent enclosure
- Trailer
- RS485 extension module
- Ethernet communication
- Cloud monitor
- ATS panel
- Motorized circuit breaker
- Synchronizing system
- Spare parts
FAQ
Q1: What power range does the SWT Kubota Series cover?
A: The series covers 50Hz and 60Hz models from 6kW to 24kW, with standby ratings up to 32.5kVA depending on model configuration.
Q2: Are both 50Hz and 60Hz models available?
A: Yes. 50Hz models include SK8.3-1P, SK16.5-1P, SK25-1P and SK32.5. 60Hz models include SK8.8X-1P, SK16.5X-1P, SK30X and SK30X-1P.
Q3: Can SWT provide single-phase models?
A: Yes. Single-phase models are available for 230V or 240V applications, including SK8.3-1P, SK16.5-1P, SK25-1P, SK8.8X-1P, SK16.5X-1P and SK30X-1P.
Q4: Are three-phase models available?
A: Yes. Three-phase models are available, such as SK32.5 for 380/400/415V and SK30X for 220/127V applications.
Q5: What enclosure types are available?
A: Open type, silent type and super silent type configurations are available according to site requirements.
Q6: Can the generator set work with ATS?
A: Yes. ATS panel is available as an optional accessory for automatic switching between mains and generator power.
Q7: What tests are carried out before delivery?
A: Each unit is tested at 0%, 25%, 50%, 75%, 100% and 110% load, and the protection devices and control systems are checked before delivery.
Q8: What applications are suitable for this series?
A: Typical applications include residential backup power, telecom stations, small commercial buildings, construction sites, farms, rental power and emergency standby power.



