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Product Overview
The BetaSet / BetaGen 21/4 is a compact but powerful 4‑pole marine generator delivering up to 18.2 kVA at 50 Hz and 24.0 kVA at 60 Hz. Based on a naturally aspirated 4‑cylinder Kubota engine (≈2,197 cc) with electronic governor, it is ideal for vessels under 20 m and fully compliant with CCNR Stage IIIA emissions standards. Available with heat exchanger, keel, or radiator cooling options.
Key Features
- Rated Power: 18.2 kVA (1 ph 50 Hz), up to 24.0 kVA (3 ph 60 Hz)
- Flexible Volt/Freq Options: 230 V single‑phase or 400 V 3‑phase @ 1,500 rpm (50 Hz); 127/254 V 1ph or 440 V 3ph @ 1,800 rpm (60 Hz)
- Kubota-Based Engine: 4-cylinder, 2,197 cc diesel, electronically governed in accordance with ISO 3046
- Cooling Options: Heat exchanger, keel or optional radiator cooling standard across models
- Marine Alternator: Mecc Alte self‑excited ventilated IP22, 0.8 pf with AVR
- CCNR Stage IIIA Compliant: Suitable for inland waterways such as the Rhine for vessels under 20 m
Technical Specifications
| Max. Output | 18.2 kVA (1 ph 50 Hz), 21.0 kVA (3 ph 50 Hz), 21.0 kVA (1 ph 60 Hz), 24.0 kVA (3 ph 60 Hz) |
|---|---|
| Typical Load Current | 63 A* @230 V 1ph, 22.8 A** @400 V 3ph, 66 A*** @127/240 V 1ph, 25.2 A**** @440 V 3ph |
| Engine | 4-cylinder Kubota-based, 2,197 cc, electronically governed |
| Speed | 1,500 rpm (50 Hz), 1,800 rpm (60 Hz) |
| Fuel Consumption | ≈5.0 L/hr (50 Hz), 5.8–6.0 L/hr (60 Hz) |
| Cooling Options | Heat exchanger, keel or radiator cooled as standard |
| Control Module | PSM720 or EPM72 with 3 m cable: start/stop, hour meter, fault shutdown |
| Alternator | Mecc Alte IP22 ventilated, single-bearing, 0.8 pf with AVR |
| Paint | Beta Red (heat exchanger) or Dark Brunswick Green (keel); enclosure off-white |
Standard Equipment
- Heat exchanger system with cupro-nickel tubing & bronze end caps, sacrificial anode
- Keel cooling option with header tank & dry exhaust outlet
- Water-cooled exhaust manifold & injection bend
- 12 V electric start with 45 A alternator and stop solenoid valve
- Fuel, oil, and air filtration; sump drain pump; CE‑approved flexible hoses
- 3 m remote control module with safety shutdown
- Close-coupled engine & alternator on anti-vibration mounts
- Full-load testing (QA023), tri-wall packed on wooden base
Emissions & Compliance
- CCNR Stage IIIA compliant – for inland waterways use (vessels under 20 m)
- Suitable for commercial & recreational craft in EU canals and rivers
- Not valid for Lake Constance under BSO—special EPA compliance available on request
- Power output de-rated by ~8% at ambient temperatures >45 °C
Applications
- Yachts and working vessels navigating inland waterways
- Recreational and commercial craft under 20 m
- Auxiliary power systems requiring <24 kVA while maintaining low emissions
