50Hz Cummins 4BT3.9-G2 32kW/40kVA Diesel Generator Set

50Hz Cummins  32kW/40kVA  Diesel Generator Set

1. Technical Parameter

2. Core Product Features

The Cummins 4BT3.9-G2 32kW/40kVA diesel generator set is an upgraded turbocharged model of Cummins classic 3.9L series gensets. Optimized on the basis of the traditional 4BT3.9-G1 model, it features lower fuel consumption, stronger power reserve and more stable load adaptability. As a cost-effective 40kVA turbocharged industrial diesel generator, it is widely favored by users for industrial standby, commercial backup and off-grid power supply, balancing performance, energy efficiency and service life perfectly.

2.1 Turbocharged Power Upgrade, Strong and Stable Output

Powered by the genuine Cummins 4BT3.9-G2 turbocharged inline four-cylinder engine, this unit adopts professional turbocharging technology to boost air intake efficiency and combustion sufficiency, bringing more powerful power reserve than naturally aspirated models. The rated prime power reaches 32kW/40kVA, and the standby emergency power is upgraded to 35.2kW/44kVA, enabling strong overload resistance and fast load response. Matched with a high-quality brushless self-excited alternator, equipped with H-grade high-temperature resistant insulation and IP23 dust-proof and splash-proof protection, the unit maintains ultra-low voltage and frequency fluctuation under variable load conditions. The built-in AVR automatic voltage regulation system ensures pure 50Hz standard power output, which can support long-term continuous operation and frequent start-stop switching, fully adapting to complex industrial power consumption conditions.

2.2 Industry-leading Low Fuel Consumption, Higher Cost Performance

Energy saving is a major highlight of this upgraded G2 model. The full-load fuel consumption is only 9.3L/H, which is significantly lower than most 30-40kVA industrial diesel generators on the market. Equipped with BYC precision fuel pump and mechanical governor, the diesel atomization is uniform and combustion utilization rate is maximized, effectively reducing invalid fuel loss. Compared with the previous generation model, the optimized turbocharged combustion structure further reduces comprehensive energy consumption. For factories, commercial sites and field projects that require long-term standby or intermittent power generation, this low-consumption design can greatly reduce daily operating costs, making it the preferred energy-saving power equipment for medium-power demand scenarios.

2.3 Brushless Maintenance-free Structure, Low Operation Cost

The whole machine adopts advanced brushless self-excited power generation structure, eliminating traditional carbon brush wear and replacement problems, realizing long-term maintenance-free operation in conventional working environments. Without vulnerable contact parts, the failure rate of the power generation system is greatly reduced. The H-grade insulation material effectively resists high-temperature aging and electrical breakdown, extending the service life of the alternator winding. The IP23 protection grade can isolate daily dust, debris and light rain splash, adapting to indoor generator rooms and outdoor awning placement. The integrated shock-absorbing base optimizes operating vibration and noise, with compact overall structure and small footprint, convenient for installation, fixation and mobile transfer.

2.4 Complete Safety Protection, High Environmental Adaptability

This 32kW Cummins turbocharged backup generator is equipped with a full set of intelligent safety protection mechanisms, including low oil pressure alarm, high water temperature protection, overload, overvoltage and undervoltage automatic shutdown functions. It can quickly cut off power supply in case of abnormal working conditions to avoid equipment burnout and safety accidents. The standard 24V electric start system has a high one-time start-up success rate, supporting manual operation and automatic mains linkage switching. The optimized circulating water cooling system ensures stable heat dissipation in high-temperature environments, and the Euro 2 emission standard ensures low exhaust emissions, meeting the environmental protection requirements of industrial parks, commercial zones and rural construction scenarios.

3. Main Application Scenarios

With moderate power, turbocharged strong power reserve and ultra-low fuel consumption, the Cummins 4BT3.9-G2 40kVA diesel generator set covers industrial production, commercial services, field engineering, agricultural breeding and public emergency fields. It is a versatile power device suitable for medium-power factory emergency power supply and off-grid field temporary power generation.

3.1 Small & Medium Industrial Production Sites

It is widely used in hardware processing workshops, packaging factories, food processing plants, small machinery manufacturing factories and other industrial scenarios. Industrial production requires continuous and stable power supply, and sudden mains power failure will lead to production line shutdown and economic losses. This turbocharged generator has strong load capacity, which can quickly take over the power supply to ensure the normal operation of processing equipment, workshop ventilation systems, water supply and drainage equipment and monitoring systems, effectively avoiding production interruption losses.

3.2 Commercial & Office Supporting Scenarios

Suitable for comprehensive shopping malls, large supermarkets, office buildings, hotel resorts and catering service centers. These commercial places have dense electrical equipment and high requirements for power supply stability. In case of peak power limitation, grid maintenance or sudden power outage, the unit can start up quickly to supply power, ensuring the normal operation of lighting, central air conditioning, office equipment, elevator emergency power supply and fire control systems, and maintaining uninterrupted commercial services.

3.3 Outdoor Field Engineering & Temporary Construction

For municipal engineering, road construction, bridge projects, communication base station maintenance and field exploration without mains power coverage, thismobile turbocharged diesel generator serves as the main power supply equipment. It features strong power reserve and stable output, which can meet the power demand of small and medium construction machinery, field office equipment and on-site monitoring devices. The compact structure is convenient for transportation and hoisting, perfectly solving the power supply problem of outdoor off-grid operation.

3.4 Agricultural Breeding & Rural Off-grid Scenarios

It is an ideal power supply device for large-scale breeding farms, rural centralized processing bases and remote rural communities. Rural power grids are prone to voltage instability and occasional power outages. This low fuel consumption generator can be used as daily standby power to ensure the continuous operation of breeding constant temperature equipment, ventilation systems, agricultural product processing machinery and rural public lighting, avoiding livestock loss and material waste caused by power failure.

3.5 Public Facility Emergency Backup Scenarios

It can be used as emergency backup power for township hospitals, community service centers, primary and secondary schools, fire control stations and environmental monitoring stations. In sudden power outage emergencies, the unit can quickly respond to provide stable power support for medical rescue equipment, teaching equipment, fire alarm systems and environmental monitoring equipment, ensuring the normal operation of public basic facilities and regional public safety.

4. Core Product Purpose

Positioned as a high-efficiency turbocharged Cummins medium-power diesel generator, the 4BT3.9-G2 model focuses on solving medium-load power supply demands in multiple scenarios, with core purposes covering emergency power guarantee, off-grid main power supply, peak power regulation and safety backup, featuring high practicability and wide adaptability.

Firstly, it provides industrial and commercial emergency backup power supply. It is mainly used to respond to sudden mains power outages and regional power limitation policies, quickly switch on power supply to avoid enterprise production shutdown and commercial service interruption, and provide reliable power safety guarantee for daily operation of factories and commercial venues.

Secondly, it acts as long-term prime power for off-grid and weak power grid areas. For remote rural areas, field operation bases and areas with unstable grid voltage, the unit can operate continuously as the main power generation equipment, stably output 50Hz standard voltage, and meet the daily production, processing and living power demand of users.

Thirdly, it undertakes power grid peak shaving and auxiliary power supply. In summer peak power consumption and regional power tension periods, the generator set can be started for auxiliary power supply to make up for the shortage of mains power capacity, prevent equipment overload shutdown, and ensure stable operation of production and life.

Finally, it provides special equipment safety emergency guarantee. It supports emergency power supply for fire control systems, building elevators, medical equipment and monitoring systems in various scenarios, meets industry safety operation specifications, and improves the emergency response capability of enterprises and public institutions.

5. Common FAQ

Q1: What is the actual usage difference between prime power and standby power of Cummins 4BT3.9-G2 generator set?

The 32kW/40kVA prime power is the long-term continuous operating power of the unit, supporting 24-hour uninterrupted operation and suitable for daily off-grid main power supply and long-term standby power consumption. The 35.2kW/44kVA standby power is short-term emergency peak power, only for temporary overload power supply during sudden power outages, and long-term operation under standby load is prohibited. In actual use, it is recommended to control the long-term operating load within 80% of prime power, which can effectively reduce equipment wear and extend the service life of the 40kVA turbocharged diesel generator.

Q2: Why is the 4BT3.9-G2 model more energy-saving than other same-power generator sets?

This upgraded Cummins G2 model adopts turbocharged combustion optimization technology and precise mechanical fuel supply system. Compared with ordinary naturally aspirated generators of the same power, it has higher fuel combustion efficiency, with full-load fuel consumption as low as 9.3L/H. The matched high-efficiency brushless alternator has low power loss and high power generation conversion rate. The overall power matching of the whole machine is more reasonable, avoiding invalid energy waste. Long-term operation can effectively reduce fuel costs for users, which is its core advantage in medium-power generator products.

Q3: What installation and environmental conditions does the IP23 4BT3.9-G2 generator adapt to?

With IP23 protection grade and H-grade high-temperature resistant insulation, this industrial generator has excellent environmental adaptability, working stably in the temperature range of -20℃ to +45℃. It is suitable for fixed indoor installation in factory generator rooms and commercial equipment rooms, and also adaptable to outdoor temporary placement with rainproof and dustproof awnings. The IP23 structure can resist daily dust accumulation and light rain splash, fully meeting the working conditions of construction sites, breeding farms and rural open environments. It only needs to avoid long-term exposure to heavy rain and corrosive gas environments, and reserve sufficient heat dissipation space during installation to ensure stable long-term operation.