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Product Overview
The BetaSet / BetaGen 26/4 is a marine-grade, 4-pole generator set offering continuous output of 25.0 kVA (50 Hz) and 26.0 kVA (60 Hz). Powered by a 4-cylinder Kubota-based engine (3,318 cc), this mechanically governed unit suits vessels under 20 m and complies with Stage IIIA emissions standards. Available in heat exchanger, keel, or radiator cooling formats.
Key Features
- Max Output: 25.0 kVA (1 ph 50 Hz) / 26.0 kVA (3 ph 50 Hz & 60 Hz)
- Operation Modes: 230 V 1ph or 400 V 3ph @ 1,500 rpm (50 Hz); 127/254 V 1ph or 440 V 3ph @ 1,800 rpm (60 Hz)
- Engine: Kubota-based 4-cylinder, 3,318 cc diesel, naturally aspirated; mechanically governed per ISO 3046
- Cooling: Choose from heat exchanger, keel cooling, or radiator-cooled layouts
- Alternator: Mecc Alte ventilated IP22, 0.8 pf, self-excited with AVR; insulated return alternator 70 A standard
- Compliance: CCNR Stage IIIA approved for inland waterways (vessels under 20 m or 100 m³)
Technical Specifications
| Max. Output | 25.0 kVA (1 ph 50 Hz), 26.0 kVA (3 ph 50 Hz), 25.0 kVA (1 ph 60 Hz), 26.0 kVA (3 ph 60 Hz) |
|---|---|
| Typical Load Current | 87 A* @230 V 1ph, 28.9 A** @400 V 3ph, 79 A*** @240 V 1ph, 27.3 A**** @440 V 3ph |
| Cylinders | 4 |
| Cubic Capacity | 3,318 cc |
| Fuel Consumption | ≈6.3 L/hr (50 Hz), 6.2 L/hr (60 Hz single phase), 7.3–7.0 L/hr (three phase) |
| Cooling Options | Heat exchanger, keel, or radiator |
| Governor | Mechanical (ISO 3046 standard) |
| Alternator | Mecc Alte ventilated, IP22, self-excited, 0.8 pf |
| Paint Finish | Beta Red (HE) or Dark Brunswick Green (Keel); enclosure off-white |
Standard Equipment
- Cupro-nickel heat exchanger with bronze end caps & sacrificial anode
- Optional keel cooling header tank & dry exhaust configuration
- Water-cooled exhaust manifold and injection bend
- 12 V electric start, 70 A insulated- return alternator, stop solenoid
- Control module (PSM720 or EPM72) w/ start/stop, hours run meter, fault shutdown
- Mecc Alte marine alternator (IP22, 0.8 pf, AVR control)
- Close-coupled engine & alternator on failsafe vibration mounts
- Factory full-load tested (QA023), tri-wall packed on wooden base
Emissions & Compliance
- Stage IIIA emissions compliant, meeting CCNR limits for inland waterways
- Suitable for vessels under 20 m / 100 m³ displacement (excluding Lake Constance – BSO rules)
- EPA-compliant variants available by special request
- Power output reduced ~8% at ambient temperatures above 45 °C
Applications
- Commercial & leisure vessels navigating inland waterways
- Canal boats, narrowboats, houseboats, light workboats under 25 kVA demand
- Marine installations where low-emission CCNR compliance is required
