50HZ YUCHAI YC6MK420-D30 250kW/312.5kVA Diesel Generator Set

50HZ YUCHAI  250kW/312.5kVA Diesel Generator Set

1. Technical Parameter

2. Core Product Features

The YUCHAI YC6MK420-D30 250kW/312.5kVA diesel generator set is a high-end heavy-duty industrial power generation equipment built on Yuchai mature 6MK professional power engine platform. Optimized for long-term heavy-load continuous operation and high-frequency emergency power switching scenarios, this 312.5kVA 50Hz brushless diesel generator boasts sufficient power reserve, excellent transient load response and reliable environmental adaptability. It is a mainstream high-power power supply solution widely recognized in industrial production, municipal engineering, commercial complex supporting and large-scale emergency power guarantee fields.

2.1 Heavy-duty Industrial Structure with Ultra-high Operational Reliability

This high-power genset adopts the original Yuchai YC6MK420-D30 dedicated power engine, featuring high-strength integral cast iron cylinder block, alloy forged steel crankshaft and reinforced connecting rod structure. Equipped with wet-type removable cylinder sleeves and piston internal cooling oil passages, the engine effectively reduces thermal fatigue wear during long-hour full-load operation and greatly extends the service life of core components. The inline six-cylinder four-stroke design matches four-valve per cylinder configuration and turbocharged intercooled air intake technology, ensuring sufficient air inflow and stable combustion state even under continuous heavy-load working conditions. Matched with high-performance brushless self-excited alternator, it completely eliminates carbon brush wear, contact spark and frequent failure faults of traditional brushed generators. Combined with H-grade ultra-high temperature resistant insulation materials and IP23 dustproof and rainproof protection performance, the whole unit can maintain stable and consistent heavy-load power output in high-temperature, humid and dusty industrial harsh environments for a long time, with extremely low operational failure rate.

2.2 Precise Electronic Control with Low Fuel Consumption and Green Emission

Powered by advanced BOSCH electronic high-pressure common rail fuel injection system, the YC6MK420-D30 generator set can intelligently adjust fuel injection volume and timing according to real-time load changes, realizing precise fuel supply and full combustion. This optimized combustion control effectively improves energy utilization efficiency, with a full-load fuel consumption of only 68.3L/H and a minimum fuel consumption rate as low as ≤195g/kW·h, showing outstanding energy-saving advantages in long-duration heavy-load power generation scenarios. The calibrated power matching and optimized exhaust gas treatment structure fully comply with Non-road National Stage III and Euro 3 emission standards, featuring low smoke, low noise and low pollutant emissions during operation. It can smoothly pass environmental assessment inspections of industrial parks, urban key construction projects and large commercial facilities, meeting the dual needs of efficient power supply and green environmental protection for industrial and commercial users.

2.3 Excellent Load Response and Strong Harsh Environment Adaptability

Different from ordinary high-power generator sets, this275kW standby power diesel generator has superior transient load response capability, which can quickly cope with instantaneous load surge and grid voltage fluctuation, effectively stabilizing output voltage and frequency to protect precision industrial equipment and automated production lines. In terms of environmental adaptability, the unit supports stable cold start at -25℃ without auxiliary heating equipment, perfectly adapting to winter outdoor construction and long-term power supply in alpine and cold regions. It operates stably without power derating at an altitude of 2500 meters; the turbocharged intercooled system automatically adjusts air intake pressure and combustion state to adapt to plateau low-pressure working conditions, fully meeting the heavy-load power demand of plateau mining, road and bridge engineering and remote field projects. The IP23 professional protection grade can effectively block outdoor floating dust, sundries and light rain erosion, supporting long-term open-air placement and unattended continuous operation.

2.4 Low Maintenance Cost and Super Long Service Life

The Yuchai 6MK series heavy-duty engine adopts mature industrial-grade modular design, with compact layout and few vulnerable parts, greatly reducing daily failure probability. The brushless alternator structure saves regular carbon brush replacement and routine debugging work, cutting down daily maintenance workload and technical threshold significantly. Yuchai has a nationwide complete after-sales service network, with universal and cost-effective spare parts, making daily fault maintenance and parts replacement more convenient and efficient. The ultra-long major overhaul cycle of more than 12000 hours minimizes equipment shutdown maintenance time and long-term operational investment cost. Whether used for fixed indoor industrial standby power or mobile field heavy-load power supply, this genset maintains stable performance and high comprehensive cost performance, suitable for long-term fixed investment and operation of large enterprises and engineering projects.

3. Main Application Scenarios

With stable 250kW prime continuous heavy-load power output, 275kW emergency peak power reserve and excellent multi-working condition adaptability, the YUCHAI YC6MK420-D30 diesel generator set covers large industrial production bases, municipal key infrastructure, super commercial complexes, field heavy-duty engineering and urban comprehensive emergency power guarantee fields, serving as the preferred high-power power supply equipment for medium and large-scale high-load power demand projects.

3.1 Large Industrial Production Base Backup Power

This genset is widely used as core emergency backup power for large manufacturing factories, chemical industrial parks, metallurgical enterprises, textile production bases and large mining enterprises. For fully automated production lines, heavy mechanical equipment and precision industrial control instruments that cannot tolerate sudden power outages, this 312.5kVA industrial diesel generator can start rapidly and switch power supply automatically within seconds after grid power failure. It effectively avoids large-area production shutdown, product scrapping and equipment burnout losses caused by power interruption, ensuring continuous and orderly operation of industrial production. Meanwhile, it can be used as the main power supply for remote industrial parks and mining areas with unstable municipal grid power or insufficient power capacity to meet long-term heavy-load power generation demands.

3.2 Super Commercial & Public Infrastructure Power Guarantee

As a high-reliability heavy-duty emergency power unit, it is perfectly suitable for standby power configuration of super high-rise office buildings, large shopping mall clusters, five-star hotel groups, tertiary comprehensive hospitals, university campuses and urban public service centers. For key facilities including hospital emergency rescue equipment, building fire linkage systems, data center monitoring systems and public power distribution systems that require ultra-high power supply stability, the YC6MK420-D30 genset provides 24-hour uninterrupted emergency power support, guaranteeing normal operation of public service facilities and eliminating major safety hazards caused by sudden power failures.

3.3 Municipal & Field Heavy-duty Engineering Main Power Supply

In municipal key projects, large-scale bridge and tunnel engineering, water conservancy and hydropower construction, railway transit engineering and remote field exploration projects where municipal power grid coverage is unavailable or unstable, this Yuchai heavy-duty generator acts as the core main power supply equipment. It steadily provides continuous power for large engineering machinery, high-power welding equipment, field construction 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 working conditions, making it an essential power guarantee equipment for large engineering construction teams and infrastructure projects.

3.4 Urban Emergency Rescue & Special Scenario Power Supply

The unit is commonly deployed 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 sudden large-scale power outages occur, it can start up quickly and put into operation to sustain basic urban operation and public service 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 YC6MK420-D30 250kW/312.5kVA diesel generator set is to provide stable, energy-saving and durable heavy-load power supply solutions for medium and large industrial and commercial high-load projects. The 250kW prime power is designed for long-term continuous bearing of industrial heavy-load equipment, satisfying daily off-grid main power supply and long-duration continuous power generation demands of large enterprises, mining areas and engineering projects. The 275kW standby power reserves sufficient peak capacity for sudden power failure emergency response and instantaneous heavy-load power compensation, effectively solving common industry pain points such as municipal grid instability, regional power shortage and economic losses caused by unexpected power outages.

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

5. Common FAQ

Q1: What is the practical difference between prime power and standby power of YC6MK420-D30 generator set?

Prime power (250kW/312.5kVA) is 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 (275kW/344kVA) is short-term emergency peak power, specially designed 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, otherwise it will accelerate aging of engine core components and shorten the overall service life of the unit. In actual engineering application, it is recommended to control the operating load within 80% of prime power to ensure long-term stable and efficient heavy-load operation.

Q2: What are the core practical advantages of the brushless self-excited alternator of this Yuchai high-power genset?

The YC6MK420-D30 generator set is equipped with industrial-grade brushless self-excited alternator, which completely abandons the traditional carbon brush and slip ring friction structure. It eliminates common operational faults such as carbon brush wear, electric spark generation and frequent 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, it 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 industrial precision electrical equipment and automated production lines. With simple structure and low maintenance threshold, it is highly suitable for long-term unattended heavy-load operation in industrial projects and harsh outdoor environments.

Q3: Can the YC6MK420-D30 diesel generator operate stably in low-temperature and plateau harsh working environments?

This heavy-duty industrial 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. When operating at an altitude of 2500 meters, the turbocharged intercooled system automatically adjusts air intake volume and combustion status, maintaining stable heavy-load power output without power derating and adapting to plateau low-pressure working conditions. Meanwhile, the IP23 professional protection structure effectively resists outdoor dust, moisture and light rain erosion, ensuring long-term stable and reliable heavy-load operation in various complex and harsh working scenarios.