Southeastern Power Products KK4-12.5 Marine Diesel Generator – Keel Cooled
Silt and sand damage marine impellers, making Southeastern Power KK4-12.5 Generator essential, providing 12.5kW of 1800 RPM electricity from a 4-cylinder keel-cooled Kubota diesel powertrain for shallow-water push-boat fleets.
- 12.5kW power feeds shipboard distribution panels
- 4-cylinder Kubota engine balances mechanical rotation
- Keel-cooled system eliminates raw seawater pumps
- 1800 RPM low-speed operation cuts wear
- Cast-iron block resists harsh maritime stress
Description
Shallow silty river channels choke sea strainers, making the Southeastern Power Products KK4-12.5 Marine Generator the prime power solution for inland pushboats, dredges, and commercial tenders. Delivering 12.5 kW continuous output and 15.0 kVA surge power at 120V and 240V 60Hz, this plant powers galley cooking ranges, heavy hydraulic steering units, and battery inverter chargers without drawing river silt.
Built around a heavy-duty four-cylinder 1498cc Kubota V1505 diesel engine, the platform includes a dry exhaust manifold and cast-iron cylinder liners. The synchronous four-pole alternator features 100 percent copper windings dipped in Class H thermal varnish to resist moisture. Weighing 585 lbs dry, the generator mounts inside a frame envelope measuring 38.0 inches long by 21.0 inches wide by 25.5 inches high.
Key Features of Southeastern Power Products KK4-12.5
Commercial captains who buy Southeastern Power Products KK4-12.5 marine generator hardware gain proven commercial power equipment built for continuous riverine service. Operating at 1800 RPM minimizes mechanical stress on engine rod bearings and piston skirts, delivering thousands of trouble-free running hours between major engine overhauls.
- 12.5 kW continuous single-phase power sustains large luxury yacht galleys and laundry equipment simultaneously.
- 15.0 kVA peak surge capacity absorbs heavy locked-rotor amperage from large chiller compressor motors.
- Keel-cooled closed circuit cooling eliminates raw-water pumps, sea strainers, and heat exchanger acid flushing.
- Kubota four-cylinder diesel block provides exceptional rotational balance and low mechanical sound.
- KK4-12.5 keel cooled genset configuration allows continuous operation through shallow silted harbor waters.
- Four-pole brushless alternator eliminates slip rings and carbon brushes to minimize maintenance downtime.
- Captive rubber isolation mounts prevent heavy engine torque pulses from vibrating vessel hull stringers.
- Emergency automatic shutdown sensors stop fuel delivery upon high engine coolant temperature or low oil pressure.
Inductive Surge Limits Operating Decibels
Producing 57 dB(A) at 23 feet inside an optional sound enclosure, this generator maintains quiet conditions aboard commercial workboats. The solid-state automatic voltage regulator holds output voltage within 2 percent of 120V and 240V standards at 60 Hz during sudden 8 kW electrical step loads. Diesel fuel consumption measures 0.82 GPH at 50 percent load, providing high operational efficiency.
Hull Mounting Dry Exhaust Clearances
Install the generator on rigid structural stringers above bilge flood lines, leaving 14 inches of service clearance around capsule panels. Connect closed-circuit coolant lines to external keel cooler channels welded to the hull bottom, routing exhaust through a dry marine silencer. Grounding circuits link to vessel bonding buses through isolated ground returns to prevent galvanic zinc loss.
Service Handling Periodic Maintenance Protocols
Single-side maintenance engineering places all primary checkpoints on one accessible face for rapid routine inspections. This keel-cooled marine generator is not engineered for wet exhaust marine installations lacking exterior keel coolers, nor for gasoline vapor spaces lacking spark-proof ratings.
- Inspect coolant header tank expansion levels and check engine oil before each shift.
- Renew engine oil and replace primary fuel filters every 100 runtime hours.
- Check alternator winding insulation resistance and check valve lash every 250 runtime hours.
Commercial Warranty Factory Shipping Manifest
Southeastern Power Products backs this unit with a 2-Year commercial marine warranty protecting engine mechanical components, alternators, and structural steel mounting frames. The delivery shipment contains the Southeastern Power Products KK4-12.5 generator core, remote start panel, dry exhaust flange kit, vibration mounts, and technical operator guide.
KK4-12.5 Keel Cooled Diesel Generator (12.5 kW, 60 Hz) Specs
| Brand / Manufacturer | Southeastern Power Products / Phasor Marine |
| Full Model Code | KK4-12.5 kW Commercial Set |
| Generator Type | Commercial Keel Cooled Marine Diesel Generator Set |
| Prime Power Output | 12.5 kW (12,500 Watts) |
| AC Voltage & Frequency | 120V / 240V AC Single Phase @ 60 Hz |
| Amperage Output | 104.1A @ 120V / 52.0A @ 240V |
| Engine Type & Model | Kubota 4-Cylinder Heavy Displacement Diesel Platform |
| Engine Synchronous Speed | Governed at stable 1,800 RPM for reduced harmonic noise variables |
| Cooling System Type | Keel Cooled / Dry Manifold Array customized for closed-loop external vessel cooling |
| Fuel System Layout | 5/16" Inlet Port with 3/16" Return Interface, Fuel Filter & Mechanical Transfer Pump |
| Safety Management Systems | Low Oil Pressure Loss Matrix & High Thermal Cutoff Automatic Stop Interlocks |
| Air Intake Treatment | Donaldson-Grade High-Attenuation Air Intake Silencer / Cleaner Assembly |
| Chassis & Structural Set | Heavy Structural Steel Base Frame paired with Structural Vibration Dampener Pads |
| Net Weight Class | Approx. 295 kg (650 lbs) Dry Base Mass Weight Range |
| Ideal Application | Excellent fit for intermediate commercial workboats or auxiliary tug power lines needing stable high-amperage output limits across long shifts. |












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