Phasor JD4-99.0 – 99kW Diesel Marine Generator 60Hz 1800 RPM

The Phasor JD4-99.0 is a high-capacity low-speed marine diesel generator for large commercial and high-demand vessel installations requiring 99 kW of 60Hz AC power. It uses a John Deere 4045H turbocharged aftercooled four-cylinder diesel engine running at 1,800 RPM and a direct-coupled brushless generator with solid-state voltage regulation. The base product is an open-frame generator, with a sound enclosure available as an optional configuration.

The generator uses freshwater heat-exchanger cooling with an engine-driven circulation pump and bronze raw-water impeller pump. It includes a deluxe remote gauge panel for engine and electrical monitoring, plus automatic protection for low oil pressure, high coolant temperature, and overspeed. Voltage and phase must be confirmed before purchase because the generator can be specified for different AC distribution requirements.

Key Specifications

- High-capacity low-speed marine diesel generator for 60Hz AC systems.
- Provides 99 kW continuous output at 1,800 RPM.
- Uses a John Deere 4045H turbocharged aftercooled four-cylinder diesel engine with approximately 4,500 cc displacement.
- Available in 120/240V single-phase configuration; verify the exact alternator option for any three-phase requirement.
- Uses a direct-coupled brushless generator with solid-state voltage regulation.
- Uses freshwater heat-exchanger cooling with a heavy-duty raw-water pump.
- Fuel consumption is listed at approximately 7.1 US gallons per hour, or 26.8 L per hour, at full load.
- Open-frame dimensions are approximately 1,778 mm by 762 mm by 940 mm, with a listed dry weight of approximately 1,043 kg.

Electrical Compatibility

Confirm the required 60Hz voltage, phase, electrical distribution architecture, continuous load, simultaneous load, power factor, and largest motor-starting surge before selecting a 99 kW generator. A standard single-phase unit is not automatically suitable for three-phase loads; verify the exact alternator configuration if 120/208V three-phase or another output is required.

High-capacity installations should use a formal load study that considers HVAC, watermakers, large battery chargers, refrigeration, pumps, galley loads, workshop equipment, and future electrical expansion. Three-phase systems also require correct phase sequence and balanced load allocation.

Installation Considerations

Mount the generator on a rigid vibration-isolated foundation engineered for approximately 1,043 kg, with full service access for oil, filters, coolant, raw-water pump, turbocharger, exhaust, electrical terminals, and optional sound enclosure. Provide correctly sized diesel fuel feed and return, seawater intake and strainer, wet exhaust, engine-room ventilation, starting battery, high-capacity AC distribution, grounding and bonding, circuit protection, and shore-power transfer isolation. Installation and commissioning should be completed by a qualified marine generator technician.

Before Ordering

Confirm required continuous and surge load within 99 kW, exact 60Hz voltage and phase requirement, available 1,778 mm by 762 mm by 940 mm installation space, structural support for approximately 1,043 kg, sound-enclosure requirement, diesel fuel layout, raw-water intake, exhaust route, ventilation capacity, starting-battery circuit, AC distribution and transfer-switch design, grounding plan, service access, and qualified installation requirements before purchase.