Nanni Generator Type QLS22T

Description

New Nanni Generator Type QLS22T Marine Generator For Sale

Reliable Low-Speed Three-Phase Marine Power for Yachts and Professional Vessels

The New Nanni QLS22T Marine Generator is a dependable three-phase marine diesel generator designed to provide stable onboard electricity for motor yachts, sailing yachts, cruising catamarans, passenger vessels, commercial workboats, fishing boats, and other professional marine applications. Built around a proven four-cylinder Kubota diesel engine and paired with a reliable Leroy-Somer alternator, the QLS22T combines mechanical diesel engineering, low-speed operation, marine-grade cooling, and practical serviceability.

Designed for vessels using a 230/400V three-phase electrical system, the New Nanni QLS22T provides approximately 15.6 kW of continuous power, equivalent to 19.5 kVA, and up to 17.7 kW of prime power, equivalent to approximately 22.1 kVA, at a 0.8 power factor. The generator operates at 50 Hz and 1500 RPM, making it suitable for compatible marine air-conditioning systems, refrigeration equipment, pumps, battery chargers, ventilation systems, water makers, galley appliances, navigation electronics, and other essential onboard electrical loads. (Nanni Industries)

The New Nanni QLS22T is particularly suitable for vessel owners and professional operators requiring more electrical capacity than smaller compact generator sets while retaining the reliability and practical maintenance advantages of a mechanically controlled diesel engine.

Selecting the correct marine generator involves more than comparing maximum power ratings. Vessel owners, boat builders, shipyards, and marine installers should also evaluate continuous electrical demand, equipment startup loads, phase balance, machinery-space dimensions, cooling-water supply, ventilation, exhaust routing, expected operating hours, and future electrical requirements.

Purpose-Built Nanni QLS Marine Engineering

The New Nanni QLS22T marine generator range is developed for pleasure-duty and professional marine applications. Unlike a portable generator or conventional industrial power unit adapted for boat use, the New Nanni QLS22T is configured as an integrated marine power-generation system designed to operate reliably in demanding onboard environments.

Nanni equips the QLS range with Leroy-Somer alternators, internationally recognized for dependable construction, electrical performance, and versatility. The QLS series is designed to provide quiet and reliable power for recreational vessels while also supporting demanding professional and continuous-duty applications. (Nanni Industries)

The QLS22T uses a four-cylinder, inline, four-stroke Kubota diesel engine with approximately 2.2 litres of displacement. The engine features:

• Mechanical fuel regulation
• Indirect diesel injection
• Naturally aspirated air intake
• Four-cylinder inline construction
• 1500 RPM operating speed
• Marine heat-exchanger cooling

The generator is engineered for marine environments affected by:

• Continuous vibration
• High humidity
• Saltwater exposure
• Restricted machinery-space ventilation
• Changing electrical loads
• Vessel movement and inclination
• Extended operating periods

Its 1500 RPM operating speed supports stable 50 Hz electrical generation while helping reduce mechanical wear, vibration, and operating noise compared with many compact 3000 RPM generator systems.

Customers evaluating the Nanni Generator Type QLS22T price should consider more than the initial purchase cost. Electrical capacity, installation compatibility, fuel efficiency, mechanical simplicity, marine cooling, service accessibility, expected operating hours, and long-term product support all contribute to the generator’s overall value.

Proven Four-Cylinder Kubota Diesel Performance

The New Nanni QLS22T uses a reliable Kubota diesel engine platform designed for dependable operation under sustained electrical demand. Kubota engines are widely used in marine, industrial, agricultural, and power-generation applications because of their durable construction, efficient performance, and established service support.

The engine configuration includes:

• Four cylinders in line
• Four-stroke diesel operation
• Approximately 2.2-litre displacement
• Mechanical fuel regulation
• Indirect fuel injection
• Naturally aspirated air intake
• 1500 RPM rated speed

The mechanical fuel system provides a straightforward operating arrangement that may appeal to yacht owners and commercial operators who value familiar maintenance procedures and reduced dependence on complex electronic fuel-management components.

Potential benefits include:

• Practical mechanical servicing
• Familiar diesel troubleshooting procedures
• Reliable operation in remote cruising areas
• Durable fuel-system construction
• Reduced dependence on electronic engine controls
• Established Kubota engine technology

Mechanical fuel regulation does not remove the need for regular maintenance. Clean diesel fuel, effective filtration, correct injector performance, reliable lubrication, proper cooling, and scheduled servicing remain essential for dependable long-term operation.

A correctly sized diesel marine generator allows vessel owners and professional operators to maintain important electrical services while cruising, remaining at anchor, or working offshore without relying on marina electricity.

It can also reduce the need to operate the vessel’s main propulsion engines solely for battery charging or auxiliary electrical production.

Continuous and Prime Power Ratings

Understanding generator ratings is important when selecting an auxiliary marine power system.

The Nanni QLS22T provides:

The continuous rating is the more relevant figure when evaluating sustained onboard electrical demand. The prime rating represents the generator’s published operating capacity under the applicable ISO 8528-1 operating conditions. Nanni lists the QLS22T at 17.7 kW prime power for 50 Hz operation. (Nanni Industries)

The vessel’s normal electrical demand should remain within the generator’s approved operating capacity while leaving reasonable reserve for temporary increases in load.

Equipment such as air-conditioning compressors, refrigeration systems, pumps, electric motors, battery chargers, ventilation fans, and water makers may require considerably more electrical power during startup than during normal operation.

Selecting a generator that is too small may result in:

• Electrical overload
• Voltage instability
• Excessive operating temperatures
• Difficulty starting electric motors
• Frequent protective shutdowns
• Reduced generator service life

However, selecting a generator that is substantially larger than required may result in prolonged operation under very light load. A professional marine electrical load assessment helps balance electrical capacity, startup demand, operating reserve, fuel efficiency, and long-term generator performance.

Stable 230/400V Three-Phase Electrical Output

The QLS22T is designed for vessels requiring dependable 230/400V three-phase marine power. Three-phase electrical systems distribute power efficiently to compatible motors, pumps, refrigeration equipment, ventilation systems, and auxiliary machinery.

The generator may support compatible equipment such as:

• Marine air-conditioning systems
• Seawater and freshwater pumps
• Refrigeration and freezer systems
• Battery-charging equipment
• Ventilation and extraction systems
• Navigation electronics
• Communication equipment
• Vessel-monitoring systems
• Water-making equipment
• Galley appliances
• Auxiliary electric motors
• Professional marine equipment

Before installation, a qualified marine electrician should verify:

• Generator voltage
• Electrical frequency
• Phase rotation
• Earthing and bonding arrangements
• Cable sizes
• Circuit protection
• Switchboard compatibility
• Load distribution

Single-phase equipment may be supplied through a correctly designed three-phase distribution system. However, loads should be distributed appropriately across all phases because excessive phase imbalance may reduce available generator capacity and affect electrical stability.

Dependable Electricity for Modern Vessel Systems

Modern yachts and professional vessels rely on stable electricity for navigation, communication, safety systems, refrigeration, battery charging, climate control, lighting, monitoring, and daily onboard operations.

The New Nanni QLS22T generator set is designed to provide reliable electrical output as connected demand changes. Stable voltage and frequency are particularly important for vessels operating sensitive electronic equipment and several motor-driven systems simultaneously.

A dependable vessel power-generation system may support:

• Navigation displays
• Communication equipment
• Battery chargers
• Refrigeration controls
• Vessel-monitoring systems
• Lighting circuits
• Pumps and motor starters
• Safety and alarm equipment
• Domestic onboard appliances
• Professional operating equipment

Electrical performance depends on the complete installation rather than the generator alone. Engine-speed stability, alternator regulation, cable sizing, grounding, circuit protection, phase balance, and switchboard design all influence onboard power quality.

Professional installation and commissioning are therefore important for safe and dependable long-term operation.

Marine Cooling for Sustained Operation

Reliable cooling is essential for dependable marine generator performance. Unlike land-based generators operating in open surroundings, marine generator sets are normally installed inside enclosed machinery spaces where heat must be removed efficiently.

The New Nanni QLS22T uses a dedicated marine generator cooling system based on closed-circuit engine cooling, heat exchange, raw-water circulation, and a marine wet-exhaust arrangement.

A properly maintained cooling system supports:

• Stable engine operating temperature
• Efficient heat transfer
• Reliable performance under sustained electrical demand
• Reduced thermal stress
• Protection of internal engine components
• Longer generator service life

Routine maintenance should include inspection of:

• Engine coolant condition
• Raw-water strainers
• Seawater flow
• Cooling hoses and clamps
• Drive belts
• Raw-water pump impellers
• Heat-exchanger components
• Wet-exhaust connections

Restricted seawater flow, a damaged impeller, blocked cooling passages, or inadequate machinery-space ventilation may cause overheating even when the generator is correctly sized.

Where the generator is installed below the vessel’s waterline, the seawater and exhaust arrangement should be evaluated for siphoning risk. An appropriately installed siphon break may be required depending on the vessel configuration.

Compact Low-Speed Generator Design

The QLS22T provides useful three-phase electrical capacity while maintaining dimensions suitable for many yacht and commercial-vessel machinery spaces.

Nanni publishes the following approximate dimensions and dry weight:

These dimensions apply to the standard generator configuration and should be treated as reference values. Final installation planning should use the approved model-specific technical drawing. (Nanni Industries)

Before installation, the vessel’s engineering team should confirm:

• Overall generator dimensions
• Dry and operational weight
• Mounting-point locations
• Machinery-space access
• Maintenance clearances
• Ventilation requirements
• Seawater connections
• Exhaust routing
• Fuel supply and return connections
• Electrical cable access
• Lifting arrangements
• Future generator-removal requirements

When replacing an existing boat generator, matching only the electrical output is not sufficient. Voltage, frequency, phase configuration, dimensions, mounting arrangements, cooling capacity, exhaust requirements, fuel-system compatibility, and switchboard integration should also be verified.

A professional installation assessment can reduce unexpected modifications and ensure that the selected marine generator replacement remains accessible for inspection and future servicing.

Low-Speed Operation and Improved Onboard Comfort

Noise and vibration are important considerations aboard yachts, passenger boats, cruising vessels, and liveaboard craft.

The QLS22T operates at 1500 RPM, helping reduce mechanical speed, vibration, and operating noise compared with many compact 3000 RPM generator systems.

Its four-cylinder engine configuration also supports smooth operation. However, final onboard noise depends on the complete installation.

A correctly installed quiet marine generator should include:

• Flexible anti-vibration mounts
• Effective machinery-space ventilation
• Properly supported hoses and electrical cables
• A professionally designed wet-exhaust system
• Suitable compartment insulation
• Adequate maintenance clearance

Where improved acoustic comfort is required, an appropriate sound enclosure may be considered. Nanni identifies soundshield availability within the QLS generator range. (Nanni Industries)

The enclosure alone does not determine the final onboard noise level. Hull construction, mounting quality, exhaust design, ventilation openings, and vibration transfer through the vessel structure also influence acoustic performance.

Applications of the Nanni QLS22T Marine Generator

Sailing Yachts and Cruising Catamarans

The generator can provide dependable power for battery charging, refrigeration, pumps, navigation electronics, lighting, communication systems, water makers, and other essential cruising equipment.

Motor Yachts

The QLS22T may support compatible air-conditioning equipment, refrigeration, battery chargers, pumps, lighting, galley appliances, and navigation electronics.

Workboats and Fishing Vessels

The generator may serve as a dependable commercial marine generator for pumps, refrigeration equipment, lighting, communications, charging systems, and operational machinery.

Passenger and Professional Craft

The QLS22T can support compatible ventilation systems, lighting, pumps, battery chargers, navigation equipment, refrigeration, and passenger-service systems.

Expedition and Long-Range Vessels

Its low-speed mechanical diesel configuration may appeal to operators seeking dependable auxiliary marine power during extended voyages.

Marine Refit Projects

The generator may be considered when replacing an ageing, inefficient, undersized, or unreliable three-phase generator, provided the vessel’s electrical and installation requirements are compatible.

Technical Specifications of the Nanni QLS22T

The QLS22T is officially listed by Nanni with 17.7 kW of prime power, 230/400V three-phase output, a four-cylinder Kubota diesel engine, mechanical fuel regulation, indirect injection, and 1500 RPM operation. (Nanni Industries)

Final alternator specifications, control equipment, standard accessories, optional equipment, dimensions, and installation requirements should be confirmed before ordering.

Standard Marine Equipment and Available Options

The Nanni QLS22T is supplied as an integrated marine diesel generator set designed for dependable onboard installation.

Typical marine equipment may include:

• Four-cylinder Kubota diesel engine
• Leroy-Somer three-phase alternator
• Mechanical fuel-control system
• Indirect diesel injection
• Naturally aspirated air intake
• Marine heat-exchanger cooling
• Raw-water circulation equipment
• Marine wet-exhaust components
• Fuel and oil filtration
• Generator protection equipment
• Flexible mounting arrangement
• Operating and maintenance documentation

Available installation options may include:

• Sound enclosure
• Fuel pre-filter
• Fuel-water separator
• Siphon-break equipment
• Remote generator monitoring
• Additional marine installation accessories

The exact standard equipment and optional package should be confirmed during quotation because production specifications, regional configurations, and vessel requirements may vary.

Genuine Nanni Generator Supply and Worldwide Support

Customers looking for the New Nanni Generator Type QLS22T Marine Generator for sale can contact our marine specialists for current availability, technical guidance, configuration information, and international delivery assistance.

We support customers with:

• Genuine Nanni marine generator supply
• Electrical-load and generator-sizing guidance
• Marine application recommendations
• Replacement generator assessments
• Technical documentation
• Export documentation
• Worldwide shipping arrangements
• After-sales customer assistance

Nanni supports its products through an international sales and service network, while genuine replacement parts are supplied to help maintain generator performance, durability, and long-term operating reliability. (Nanni Industries)

Frequently Asked Questions

What is the Nanni QLS22T price?

The Nanni Generator Type QLS22T price depends on current availability, selected equipment, shipping destination, export requirements, and delivery arrangements. Contact our team for an updated quotation.

How much power does the QLS22T provide?

The generator provides approximately 15.6 kW or 19.5 kVA of continuous power and up to 17.7 kW or approximately 22.1 kVA of prime power. (Nanni Industries)

Is the QLS22T a three-phase generator?

Yes. It provides 230/400V three-phase marine power at 50 Hz with a 0.8 power factor. (Nanni Industries)

What engine is used in the QLS22T?

The generator uses a four-cylinder Kubota diesel engine with approximately 2.2 litres of displacement, mechanical fuel regulation, indirect injection, and naturally aspirated air intake. (Nanni Industries)

What does the “T” designation mean?

The “T” designation identifies the QLS22T as a three-phase marine generator.

Is the QLS22T suitable for yachts and catamarans?

Yes. Its low-speed operation, useful electrical capacity, and compact four-cylinder configuration make it suitable for compatible motor yachts, sailing yachts, catamarans, workboats, and professional vessels.

Can the generator operate air conditioning and refrigeration equipment?

Yes, provided the combined continuous electrical demand and equipment startup loads remain within the generator’s approved capacity.

Can it replace an existing marine generator?

Yes. It may be suitable for a marine generator replacement when output, voltage, frequency, phase configuration, dimensions, mounting, cooling, exhaust, fuel, and switchboard requirements are compatible.

Is worldwide shipping available?

Yes. We support customers with international marine generator supply, export documentation, and worldwide shipping arrangements.

Request a Quote for the Nanni QLS22T Marine Generator

The New Nanni QLS22T Marine Generator is a dependable choice for yacht owners, boat builders, marine installers, shipyards, and professional operators requiring reliable three-phase marine power from a low-speed, mechanically controlled Kubota diesel platform.

Contact our marine generator specialists to request the latest Nanni QLS22T price, confirm current availability, review installation requirements, and receive assistance selecting the correct generator configuration for your vessel.