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Product Overview
The BetaSet / BetaGen 7/4 is a compact 4‑pole marine generator set delivering up to 5.7 kVA at 50 Hz and 6.7 kVA at 60 Hz. Powered by a 3-cylinder Kubota-based diesel engine (~1,123 cc), mechanically governed, it is suitable for vessels under 19 kW and compliant with CCNR emission limits for inland waterways. Available with heat exchanger, keel, or radiator cooling.
Key Features
- Max Output: 5.7 kVA (1 ph 50 Hz) | 6.7 kVA (1 ph 60 Hz)
- Operating Volt/Frequency: 230 V 1‑phase or 400 V 3‑phase @ 1,500 rpm (50 Hz); 127/254 V or 440 V @ 1,800 rpm (60 Hz)
- Engine: 3‑cylinder Kubota-based diesel (~1,123 cc), naturally aspirated and mechanically governed per ISO 3046 standards
- Cooling Options: Heat exchanger cooled, keel cooled, or radiator cooled for installation flexibility
- Alternator: Mecc Alte marine-rated ventilated IP22, self-excited generator with AVR, 0.8 pf performance
- CCNR Compliance: Suitable for inland waterways (e.g. Rhine) as engine power is below 19 kW; emissions within CCNR limits
Technical Specifications
| Max. Output | 5.7 kVA (1 ph 50 Hz), 6.7 kVA (1 ph 60 Hz) |
|---|---|
| Typical Load Current | 20.0 A* @230 V 1ph, 7.5 A** @400 V 3ph, 19.0 A*** @127/240 V 1ph, 7.0 A**** @440 V 1ph |
| Cylinders | 3 |
| Cubic Capacity | 1,123 cc |
| Fuel Consumption | ≈2.2 L/hr (50 Hz), ≈2.3 L/hr (60 Hz) |
| Cooling Options | Heat exchanger, keel cooled, or radiator cooled |
| Governor | Mechanical (ISO 3046 compliant) |
| Alternator | Mecc Alte ventilated IP22, self‑excited with AVR, 0.8 pf |
| Paint Finish | Beta Red (heat exchanger) or Dark Brunswick Green (keel cooled); enclosure off‑white |
Standard Equipment
- Cupro‑nickel heat exchanger with bronze end caps and sacrificial anode
- Keel cooling option with header tank and dry exhaust outlet
- Water-cooled exhaust manifold and injection bend
- 12 V electric start system with 45 A charging alternator and stop solenoid valve
- Control module (PSM720) with start/stop, hour meter and fault protection
- Mecc Alte marine alternator – ventilated, IP22, 0.8 pf with AVR
- Close‑coupled engine & alternator on marine-grade anti‑vibration mounts
- Factory full-load tested (QA023) and packed on a tri-wall wooden base
- 12-month warranty from commissioning or 18 months from dispatch
Emissions & Compliance
- Engine power below 19 kW – compliant with CCNR limits for inland waterways
- Suitable for commercial & recreational craft under 20 m
- For EPA compliance, special versions must be quoted
- Output reduced by ~8% when operating in ambient conditions above 45 °C
Applications
- Suitable for small recreational or work vessels under 20 m
- Canal boats, narrowboats, sailboats requiring up to 6 kVA of auxiliary power
- Marine power installations requiring compact, low‑emission solutions
