50Hz Cummins 6LTAA9.5-G3 220kW/275kVA Diesel Generator Set

50Hz Cummins 220kW/275kVA  Diesel Generator Set

1. Technical Parameter

2. Core Product Features

The Cummins 6LTAA9.5-G3 220kW/275kVA diesel generator set is a new-generation upgraded heavy-duty industrial genset based on Dongfeng Cummins 9.5L large-displacement platform. Optimized in turbocharging efficiency, fuel injection logic and heat dissipation structure compared with traditional 8.9L models, this G3 version features larger power reserve, stronger full-load stability and better harsh environment adaptability. With a maximum standby power of 313kVA and stable full-load fuel consumption of 58L/H, it has become a mainstream high-cost-performance model in the medium-to-high power genset market, widely recognized as a reliable 275kVA turbocharged intercooled Cummins diesel generator for industrial standby and field off-grid power supply.

2.1 9.5L Large-displacement Air-air Intercooled Design, Ultra-sufficient Power Margin

Powered by genuine Dongfeng Cummins 6LTAA9.5-G3 inline six-cylinder four-stroke water-cooled engine, the unit adopts advanced turbocharged and air-air intercooled dual optimization technology. The upgraded 9.5L large displacement and 116mm×148mm large bore-stroke design greatly improve air intake efficiency and fuel combustion adequacy. Compared with conventional 8.9L displacement gensets, it effectively avoids power attenuation and insufficient peak power output during long-term high-temperature and full-load operation. The factory-calibrated prime power reaches 220kW/275kVA, and the emergency standby power is upgraded to 250kW/313kVA, with a super-high overload margin. It can easily cope with instantaneous startup surge of large mechanical equipment and long-term variable load alternating operation. Matched with full-copper brushless alternator and high-precision AVR automatic voltage regulation system, the unit maintains ultra-low voltage and frequency fluctuation, stably outputting standard 50Hz industrial power supply, fully meeting the high-stability power demand of heavy industrial equipment and large engineering machinery.

2.2 Electronic Intelligent Speed Regulation, Stable Fuel Consumption & High Operational Precision

This 220kW heavy-duty Cummins industrial generator is equipped with a matched mechanical fuel pump and high-precision electronic governor, realizing real-time adaptive fuel supply adjustment according to on-site load changes. The speed regulation accuracy is stably controlled within ±1%, with sensitive dynamic response and no frequency drift or voltage surge during frequent load switching. Whether in long-term full-load continuous power generation or intermittent standby operation, the fuel combustion state is always uniform and sufficient, and the full-load fuel consumption is fixed at 58L/H with negligible fluctuation after long-cycle operation. The stable fuel consumption data facilitates enterprise daily power generation cost accounting and long-term operation budget planning, achieving a perfect balance between high-power output and economical operation.

2.3 Reinforced Heavy-duty Structure, Low Failure Rate & Long Durability

Aiming at the harsh working conditions of industrial production and field engineering, the 6LTAA9.5-G3 engine adopts integrated thickened cast iron cylinder block and high-strength forged steel crankshaft structure, with high overall structural rigidity and strong vibration and impact resistance. The upgraded multi-layer sealing process optimizes pipeline layout, completely improving the common oil and water leakage faults of traditional high-power gensets. Equipped with wear-resistant cylinder wall and high-temperature resistant piston components, the unit adapts to long-term high-load and high-temperature continuous operation. The average trouble-free operation hours reach 2300 hours, and the overhaul service life is extended to more than 7200 hours. With fewer vulnerable parts and low daily maintenance difficulty, it can realize long-term unattended operation, effectively reducing later operation and maintenance costs for users.

2.4 Brushless Maintenance-free Alternator & Full-range Safety Protection

The alternator adopts mature brushless self-excited excitation technology, eliminating carbon brushes, slip rings and other easily worn parts of traditional brushed generators, fundamentally reducing mechanical failure points and daily maintenance workload. The H-grade ultra-high temperature resistant insulation material can resist long-term high-temperature aging, moisture erosion and electrical breakdown, ensuring stable power generation performance in high-heat and humid environments. The IP23 dust-proof and splash-proof protection grade can effectively isolate construction dust, debris invasion and light rain splash, supporting indoor generator room fixed installation and outdoor awning protection placement. Meanwhile, the unit is equipped with complete intelligent protection functions including low oil pressure alarm shutdown, high water temperature overheat protection, overload protection, overvoltage and undervoltage protection and overspeed automatic shutdown, which can quickly respond to abnormal working conditions to protect equipment operation safety.

3. Main Application Scenarios

With 9.5L large-displacement strong power performance, ultra-high standby power reserve and excellent full-load operational stability, the Cummins 6LTAA9.5-G3 220kW/275kVA diesel generator set is widely used in heavy industrial manufacturing, open-pit mining operations, large-scale municipal infrastructure, port terminal engineering, industrial park standby power and municipal emergency power guarantee fields. It is the preferred power supply equipment for 275kVA industrial continuous power generation and 313kVA engineering emergency standby power supply.

3.1 Heavy Industrial Manufacturing & Processing Bases

It is suitable for large machinery processing, metallurgical production workshops, chemical industrial parks, building materials processing, non-ferrous metal smelting and large food deep processing enterprises. Heavy industrial production has extremely high requirements for power supply continuity and load stability. Sudden grid power failure, seasonal power rationing and routine power grid maintenance will directly cause full production line shutdown and huge economic losses. This high-power intercooled generator has strong instantaneous overload resistance and fast load switching response speed, which can quickly take over power supply to ensure the normal operation of heavy production equipment, workshop ventilation and water supply systems and intelligent monitoring equipment, effectively guaranteeing uninterrupted industrial production.

3.2 Mining & Remote Off-grid Field Operation Sites

For open-pit mining, underground mining auxiliary power supply, mountain field exploration, remote highway and railway construction and other scenarios without complete municipal power grid coverage, this Cummins 6LTAA9.5-G3 off-grid diesel generator serves as the core main power supply equipment. Its air-air intercooled heat dissipation structure adapts to dusty and high-temperature harsh mining working conditions, and the electronic speed regulation system can stably cope with frequent load fluctuations in mining operation. The 9.5L large-displacement power core supports 24-hour long-term continuous high-load operation, fully meeting the power demand of mining machinery, field office communication equipment and staff living supporting facilities.

3.3 Large-scale Municipal Infrastructure & Port Projects

It is the ideal power guarantee equipment for long-cycle key projects such as municipal road and bridge engineering, large-scale water conservancy and hydropower construction, tunnel engineering, urban comprehensive renovation and port terminal operation. Large infrastructure projects have long construction cycles and complex outdoor working environments, and rely heavily on stable mobile power supply. The unit has excellent environmental adaptability and anti-interference performance, can resist outdoor temperature changes, wind and dust erosion, and provides continuous and stable power support for large engineering machinery and construction auxiliary equipment, ensuring the smooth progress of key municipal projects.

3.4 Large Industrial Parks & Commercial Complex Clusters

Suitable for comprehensive industrial parks, super-large shopping mall clusters, high-rise office buildings and five-star hotel groups with large power consumption and high power supply reliability requirements. These scenarios have dense electrical equipment and large peak power consumption. In summer high-temperature power tension periods, sudden grid failures and routine power maintenance, the unit can automatically start and switch power supply, ensuring the normal operation of fire control linkage systems, emergency elevators, public lighting and central air conditioning systems, maintaining stable commercial operation order and industrial park production efficiency.

3.5 Municipal Public Facilities & Emergency Rescue Fields

It can be used as emergency backup power for regional central hospitals, fire rescue brigades, municipal emergency command centers, environmental monitoring stations and traffic management centers. In sudden power outage emergencies, the unit can respond rapidly with stable high-power output, providing reliable power guarantee for medical rescue equipment, fire alarm linkage systems, emergency disposal equipment and precision monitoring instruments, effectively improving regional public service capacity and emergency rescue efficiency.

4. Core Product Purpose

Positioned as a high-power high-reliability Cummins 275kVA diesel generator, the 6LTAA9.5-G3 model focuses on solving long-cycle high-load continuous power supply and high-standard emergency power guarantee demands in harsh industrial and complex engineering scenarios, covering industrial emergency standby power, off-grid main power supply, power grid peak regulation and key public facility power backup.

Firstly, it provides high-power emergency backup power for heavy industrial enterprises. Aiming at large heavy industrial parks and high-load manufacturing bases, it responds to sudden grid outages, seasonal power rationing and routine power cut maintenance, avoiding large-scale production shutdown and equipment stagnation caused by power interruption, and building a solid power safety barrier for enterprise continuous production.

Secondly, it acts as long-term stable prime power for off-grid mining and field engineering. For remote mining areas, field construction sites and weak grid areas with unstable voltage, the unit can operate continuously for 24 hours as the main power generation equipment, stably outputting 220kW rated power to meet the long-term production, processing and living power demand of field operation teams.

Thirdly, it undertakes power grid peak shaving and auxiliary power supply for high-consumption scenarios. In summer high-temperature peak power consumption periods with tense regional power supply, the generator set can be started for auxiliary power supply to make up for municipal power grid capacity shortage, relieve equipment overload pressure, and avoid project stagnation and economic losses caused by power shortage.

Finally, it provides high-precision stable power guarantee for key professional equipment. Relying on electronic precise speed regulation and AVR constant voltage technology, the unit has extremely low power supply fluctuation, which can supply high-quality pure power for medical rescue devices, fire control systems, environmental monitoring instruments and industrial precision processing equipment, avoiding equipment failure, data loss and safety accidents caused by unstable power supply.

5. Common FAQ

Q1: What is the actual usage difference between prime power and standby power of Cummins 6LTAA9.5-G3 generator?

The 220kW/275kVA prime power is the long-term continuous operating power officially calibrated by Cummins, supporting 24-hour uninterrupted stable operation all year round, which is suitable for daily off-grid main power supply and long-term industrial high-load standby scenarios. The 250kW/313kVA standby power is short-term emergency peak power, only allowing 1-hour overload operation within 12 hours, and long-term operation under standby load is strictly prohibited in actual use. According to on-site engineering operation experience, controlling the long-term operating load within 80% of prime power can effectively reduce engine mechanical wear, stabilize fuel consumption and maximize the service life of the 6LTAA9.5-G3 275kVA heavy-duty diesel generator set.

Q2: What core advantages does 6LTAA9.5-G3 9.5L model have over traditional 8.9L gensets?

The 6LTAA9.5-G3 is an upgraded iteration of the classic 8.9L series gensets. It adopts an expanded 9.5L large-displacement engine with optimized air-air intercooled structure, featuring larger power reserve and stronger anti-attenuation capability under full-load high-temperature operation. The standby power is significantly increased to 313kVA, with more sufficient emergency overload capacity to cope with sudden large-load access. Meanwhile, the upgraded electronic speed regulation system has higher response sensitivity and operational stability, lower failure rate and longer trouble-free operation cycle, making it more suitable for long-cycle uninterrupted power generation in heavy industry and mining harsh scenarios.

Q3: What installation and daily maintenance precautions are required for IP23 6LTAA9.5-G3 heavy-duty generator?

This high-power heavy-duty unit has IP23 dust-proof and splash-proof protection and H-grade high-temperature insulation performance, adapting to indoor generator room fixed installation and outdoor awning protective placement, and can cope with harsh working conditions such as construction site dust and seasonal high-temperature operation. During installation, sufficient heat dissipation and maintenance space must be reserved around the unit to avoid high-temperature alarm and shutdown caused by poor heat dissipation of the 9.5L large-displacement engine. In daily maintenance, regularly replace lubricating oil and three filters, check the operating state of the electronic governor and intercooled system, and keep the fuel pipeline unobstructed. Avoid long-term full-load overload operation in daily use to ensure long-term stable and efficient operation of the unit.