50HZ YUCHAI YC6K500-D31 300kW/375kVA Diesel Generator Set

50HZ YUCHAI  300kW/375kVA Diesel Generator Set

1.  Technical Parameter

2. Core Product Features

The YUCHAI YC6K500-D31 300kW/375kVA diesel generator set is an upgraded heavy-duty industrial power generation unit built on Yuchai mature 6K large-displacement engine platform. Optimized for long-duration full-load continuous operation and frequent emergency power switching scenarios, this 375kVA 50Hz brushless diesel generator delivers sufficient power reserve, stable transient response and outstanding structural durability. It is a widely trusted high-power power supply solution for large industrial facilities, municipal infrastructure and large-scale commercial emergency backup power projects across various industries.

2.1 Reinforced Heavy-duty Structure for Long-term Full-load Stability

Powered by the original Yuchai YC6K500-D31 industrial dedicated power engine, this genset adopts a high-rigidity integral cast iron cylinder block and alloy forged steel crankshaft structure, effectively resisting mechanical fatigue under long-hour heavy-load operation. The inline six-cylinder layout with four valves per cylinder and turbocharged intercooled air intake system ensures adequate air intake and uniform fuel combustion, maintaining consistent power output even during prolonged full-load operation. Equipped with wet removable cylinder liners, the unit simplifies later maintenance and parts replacement without complex engine disassembly. Matched with a high-qualitybrushless self-excited alternator, it completely eliminates common failures of traditional brushed generators such as carbon brush wear, electric spark interference and frequent shutdown maintenance. With H-grade high-temperature resistant insulation materials and IP23 dustproof and rainproof protection grade, the whole machine runs reliably in high-temperature, humid and dusty industrial environments with extremely low failure rates.

2.2 Bosch Common Rail Fuel System for Optimized Energy Efficiency

This industrial generator adopts imported BOSCH electronic high-pressure common rail fuel injection technology, which dynamically adjusts fuel injection volume and timing according to real-time load changes. This precise fuel control realizes full combustion and minimizes fuel waste, achieving a minimum fuel consumption rate of ≤192g/kW·h and a stable full-load fuel consumption of 83L/H. The optimized combustion calibration and exhaust structure effectively reduce smoke and carbon deposition, fully complying with Non-road National Stage III emission standards. With low noise and low pollutant emissions during operation, the unit easily passes environmental assessments for industrial parks and urban key projects, balancing high-efficiency power generation and eco-friendly operation perfectly.

2.3 Excellent Transient Response and Wide Environmental Adaptability

As a high-performance 330kW standby power diesel generator, this unit features superior load adaptability and fast transient response. It can quickly cope with sudden load surges and grid voltage fluctuations, with voltage regulation accuracy controlled within 0.5%, effectively stabilizing power output and protecting precision industrial equipment and automated production lines from power fluctuation damage. In harsh working conditions, it supports reliable cold start at -25℃ without auxiliary heating devices, suitable for winter outdoor construction and alpine region power supply. It maintains non-derating stable operation at altitudes up to 1500 meters, with the turbocharged intercooled system automatically adapting to low-pressure plateau environments. The IP23 professional protection structure resists dust, floating debris and light rain erosion, supporting long-term open-air placement and unattended continuous operation.

2.4 Low Lifecycle Maintenance and High Comprehensive Cost Performance

The Yuchai 6K series heavy-duty engine adopts mature modular industrial design with compact layout and fewer vulnerable parts, greatly reducing daily failure risks. The brushless alternator design removes regular carbon brush replacement and routine debugging work, cutting down daily maintenance workload and operational costs significantly. Backed by Yuchai’s nationwide complete after-sales service network, users can access convenient spare parts supply and professional technical support with low maintenance thresholds. The ultra-long major overhaul cycle of over 12000 hours minimizes equipment shutdown time and long-term investment costs. Whether used for fixed indoor standby power or mobile field main power supply, this 300kW industrial diesel generator maintains stable long-term performance with remarkable cost performance advantages in the medium and high-power generator market.

3. Main Application Scenarios

Benefiting from stable 300kW prime continuous power, 330kW emergency peak power reserve and excellent multi-condition adaptability, the YUCHAI YC6K500-D31 diesel generator set covers large industrial production, municipal core infrastructure, large commercial complexes, field heavy-duty engineering and urban emergency power guarantee fields, serving as the preferred high-power power supply equipment for large-scale high-load power demand projects.

3.1 Large Industrial Park and Factory Emergency Backup Power

This 375kVA industrial diesel generator is widely deployed as core emergency backup power for large manufacturing bases, chemical industrial parks, metallurgical plants, new energy production workshops and large mining enterprises. For fully automated production lines, heavy processing machinery and precision industrial control instruments that cannot withstand sudden power outages, the unit achieves rapid startup and automatic power switching once the municipal grid fails. It effectively avoids massive production shutdowns, product scrapping and equipment burnout losses, ensuring uninterrupted industrial production. Additionally, it serves as the main power source for remote industrial zones and mining areas with unstable grid power or insufficient power capacity, meeting long-term heavy-load off-grid power generation demands.

3.2 Large Commercial and Public Infrastructure Power Guarantee

With ultra-stable power output and high operational reliability, the genset is an ideal standby power solution for super high-rise office buildings, large shopping mall clusters, five-star hotel groups, tertiary hospitals, university campuses and urban public service centers. It provides 24-hour uninterrupted emergency power support for critical facilities including hospital emergency rescue systems, building fire linkage equipment, large data center monitoring systems and public power distribution systems. It effectively eliminates safety hazards and operational losses caused by sudden power failures, ensuring stable operation of urban public infrastructure and commercial facilities.

3.3 Municipal and Field Heavy-duty Engineering Main Power Supply

In municipal key projects, bridge and tunnel construction, water conservancy and hydropower engineering, railway transit construction and remote field exploration projects without stable grid coverage, this Yuchai heavy-duty generator acts as the primary power supply equipment. It steadily provides continuous power for large engineering machinery, high-power welding equipment, field assembly lines and temporary office facilities. Its excellent low-temperature startup performance and plateau non-derating capability enable stable operation in complex and harsh field environments, making it essential power guarantee equipment for large-scale infrastructure and field engineering teams.

3.4 Urban Emergency Rescue and Special Scenario Power Supply

The unit is commonly used for urban natural disaster emergency relief, power grid overhaul emergency power supply, large communication base station cluster backup power, scenic area peak power supply and remote regional power supply. When extreme weather, grid faults or large-scale power outages occur, it starts up quickly and puts into operation to sustain basic urban operational power demands. It also meets high-load temporary power needs for large outdoor exhibitions, temporary engineering construction and emergency rescue sites, featuring strong scenario compatibility and practical value.

4. Core Product Purpose

The core purpose of the YUCHAI YC6K500-D31 300kW/375kVA diesel generator set is to deliver stable, energy-saving and durable heavy-load power supply solutions for large industrial and commercial high-load projects. The 300kW prime power rating is designed for long-term continuous bearing of industrial heavy-load equipment, fully meeting daily off-grid main power supply and long-duration continuous power generation requirements of large enterprises, mining areas and large-scale engineering projects. The 330kW standby power reserves sufficient peak capacity to handle sudden power failure emergencies and instantaneous heavy-load power surges, solving common industry pain points such as municipal grid instability, regional power shortages and economic losses caused by unexpected power interruptions.

As a premium 50Hz industrial brushless self-excited heavy-duty diesel generator set, this model focuses on industrial-grade heavy-load reliability and long-term operational economy. Adopting Yuchai 6K series large-displacement heavy-duty engine technology and high-stability brushless alternator configuration, it enhances equipment anti-interference ability and heavy-load resistance while reducing long-term operation and maintenance costs for users. It not only satisfies high-load power demands of large industrial production and commercial complex operation, but also provides reliable power guarantee for harsh field engineering construction and urban comprehensive emergency rescue scenarios, standing as a cost-effective high-power generation device integrating energy saving, environmental protection, stability and long service life.

5. Common FAQ

Q1: What is the actual usage difference between prime power and standby power of YC6K500-D31 generator set?

Prime power (300kW/375kVA) refers to the continuous usable rated power of the genset, supporting long-term cyclic full-load operation. It is mainly applied to daily main power supply, long-term off-grid power generation and stable heavy-load industrial production operation. Standby power (330kW/412.5kVA) is short-term emergency peak power, exclusively used for sudden grid power failure or instantaneous heavy-load surge scenarios. It only allows short-duration emergency operation and cannot run continuously at full load for a long time, as prolonged overloaded operation will accelerate aging of core engine components and shorten the unit’s overall service life. In actual engineering applications, professional operators usually control the operating load within 80% of prime power to ensure long-term stable and efficient operation.

Q2: What are the practical advantages of the brushless self-excited alternator equipped on YC6K500-D31 genset?

The YC6K500-D31 generator set adopts industrial-grade brushless self-excited alternator, which completely abandons the traditional carbon brush and slip ring friction structure. This design eliminates frequent faults such as carbon brush wear, electric spark generation and regular replacement maintenance during long-term heavy-load operation, greatly reducing daily failure rate and maintenance workload. Matched with H-grade high-temperature resistant insulation and IP23 dustproof and rainproof protection grade, the alternator resists high-temperature aging and external environmental erosion effectively. The voltage regulation accuracy is controlled within ≤0.5%, avoiding voltage and frequency fluctuation and protecting precision electrical equipment and automated production lines. It is highly suitable for long-term unattended heavy-load operation in industrial and outdoor harsh environments.

Q3: What extreme working environments can the YC6K500-D31 diesel generator adapt to?

This heavy-duty large-displacement genset has passed strict extreme environment adaptation tests with excellent environmental tolerance. It achieves reliable cold start at -25℃ without auxiliary heating equipment, adapting to winter outdoor construction and industrial power supply in alpine cold regions. The unit maintains stable non-derating power output at an altitude of 1500 meters, with the turbocharged intercooled system automatically adjusting air intake and combustion status to adapt to low-pressure plateau working conditions. Supported by IP23 professional protection capability, it effectively resists outdoor dust, moisture and light rain erosion, supporting long-term open-air placement and unattended continuous operation for various complex engineering and industrial scenarios.