50HZ YUCHAI YC6MK350L-D20 200kW/250kVA Diesel Generator Set

50HZ YUCHAI  200kW/250kVA Diesel Generator Set

1. Technical Parameter

2. Core Product Features

The YUCHAI YC6MK350L-D20 200kW/250kVA diesel generator set is an upgraded heavy-duty industrial power generation unit built on Yuchai mature MK-series engine platform. Optimized for long-duration heavy-load operation and frequent emergency startup scenarios, this 250kVA 50Hz brushless diesel generator delivers stable power output, improved fuel efficiency and stronger environmental adaptability compared with conventional same-power models. It has become a mainstream reliable power solution for industrial standby power, field engineering power supply and commercial emergency backup projects across various industries.

2.1 Heavy-duty Industrial Structure with Outstanding Operational Stability

This high-power genset adopts the original Yuchai YC6MK350L-D20 industrial dedicated engine, featuring integral crankcase and integral cylinder head structure that greatly enhances overall structural rigidity and long-running durability. Equipped with wet cylinder liner design, the engine achieves excellent wear resistance and allows convenient maintenance and replacement of wearing parts in later stage. The inline six-cylinder layout matches four-valve per cylinder configuration and professional turbocharged intercooled air intake system, ensuring sufficient air inflow and stable combustion even under continuous heavy-load conditions. With piston internal cooling oil passage technology, circulating engine oil timely takes away piston heat, effectively lowering core component temperature and reducing mechanical fatigue wear during long-hour full-load operation. Supported by a high-performance brushless self-excited alternator, the unit eliminates carbon brush friction, spark failure and frequent shutdown maintenance issues found in traditional brushed generators. Combined with H-grade high-temperature resistant insulation and IP23 dustproof and rainproof protection, the genset maintains consistent and reliable power output in high-temperature, humid and dusty industrial working conditions.

2.2 Optimized Combustion System with Low Fuel Consumption & Eco-friendly Operation

Tailored for long-term industrial power generation demands, the YC6MK350L-D20 generator set adopts advanced electronic high-pressure common rail fuel injection technology, which precisely adjusts fuel injection volume and timing according to real-time load changes. This intelligent fuel control method ensures full fuel combustion and significantly reduces ineffective fuel waste. The full-load fuel consumption is only 57.2L/H, and the minimum fuel consumption rate reaches ≤195g/kW·h, presenting obvious energy-saving advantages in long-hour continuous power generation scenarios. The optimized combustion calibration and exhaust treatment system fully comply with non-road National Stage III emission standards, featuring low smoke emission and low operating noise. It can smoothly pass environmental assessment inspections for industrial parks, urban construction projects and large commercial facilities, meeting enterprises’ dual demands of efficient power supply and green production.

2.3 Strong Extreme Environment Adaptability & Fast Load Response

Different from ordinary medium-power generator sets, this 220kW standby power diesel generator possesses excellent transient load response capability, which can quickly adapt to sudden load surges and grid fluctuation, effectively stabilizing 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 devices, perfectly adapting to winter outdoor construction and long-term power supply in alpine regions. It runs stably without power derating at altitudes up to 2500 meters; the turbocharged intercooled system automatically adjusts air intake pressure to adapt to low-pressure plateau environments, fully meeting power demands of plateau mining, road engineering and remote field projects. The IP23 professional protection grade effectively blocks outdoor dust, floating debris and light rain erosion, supporting long-term open-air placement and unattended operation.

2.4 Low Maintenance Cost & Long Service Life

The whole machine adopts modular integrated assembly design with compact layout and fewer vulnerable parts, greatly reducing daily failure probability. The brushless alternator structure removes regular carbon brush replacement and routine debugging work, cutting down daily maintenance workload and operational costs significantly. Yuchai MK-series engines enjoy a nationwide complete after-sales service network, with universal and cost-effective spare parts, making daily maintenance and fault troubleshooting more convenient. The ultra-long major overhaul cycle of over 12000 hours minimizes equipment shutdown maintenance time and long-term investment cost. Whether applied to fixed indoor standby power or mobile field power supply, this genset maintains stable performance with high comprehensive cost performance, ideal for long-term enterprise investment and operation.

3. Main Application Scenarios

Benefiting from stable 200kW prime continuous power output, 220kW peak standby power reserve and excellent multi-condition adaptability, the YUCHAI YC6MK350L-D20 diesel generator set covers large industrial production, municipal infrastructure, commercial complex support, field heavy-duty engineering and urban emergency power guarantee fields, serving as the preferred high-power power supply equipment for medium and large-scale power demand projects.

3.1 Large Industrial Production Backup Power Supply

This genset is widely used as emergency backup power for large manufacturing plants, chemical industrial parks, textile production bases, food processing factories and mining enterprises. For fully automated production lines, heavy mechanical equipment and precision industrial instruments that cannot tolerate sudden power outages, this 250kVA industrial diesel generator can start rapidly and switch power supply automatically once grid power fails. It effectively avoids massive production shutdown losses, product scrapping and equipment burnout caused by power interruption. Meanwhile, it can serve as the main power source for remote industrial zones and mining areas with unstable municipal grid power or insufficient power capacity, ensuring continuous and orderly heavy-load industrial production.

3.2 Commercial & Public Infrastructure Power Guarantee

As a high-reliability emergency power unit, it is perfectly suitable for standby power configuration of large shopping malls, super high-rise office buildings, star hotel clusters, tertiary hospitals, university campuses and urban comprehensive service centers. For key facilities including hospital emergency rescue equipment, building fire linkage systems, data room monitoring systems and public lighting systems that require ultra-high power supply stability, the YC6MK350L-D20 genset provides 24-hour uninterrupted emergency power support, guaranteeing normal operation of public services and eliminating potential safety hazards caused by sudden power failures.

3.3 Municipal & Field Heavy-duty Engineering Main Power Supply

In municipal key projects, large-scale bridge construction, water conservancy and hydropower engineering, railway transit construction 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 power for large engineering machinery, 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 essential power guarantee equipment for large engineering construction teams.

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 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 YC6MK350L-D20 200kW/250kVA diesel generator set is to deliver stable, energy-saving and durable heavy-load power supply solutions for medium and large industrial and commercial projects. The 200kW 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 and engineering projects. The 220kW 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 mature MK-series 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 commercial complex operation, but also provides solid power guarantee for harsh field engineering construction and urban 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 actual usage difference between prime power and standby power of YC6MK350L-D20 generator set?

Prime power (200kW/250kVA) refers to the continuous usable rated power of the genset, supporting long-term cyclic full-load operation. It is mainly used for daily main power supply, long-term off-grid power generation and stable heavy-load industrial operation. Standby power (220kW/275kVA) is short-term emergency peak power, exclusively for sudden grid power failure or instantaneous heavy-load surge scenarios. It only allows short-duration operation and cannot run continuously at full load for a long time, otherwise it will accelerate aging of engine 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 practical advantages does the brushless self-excited alternator bring to this Yuchai high-power genset?

The YC6MK350L-D20 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 faults such as carbon brush wear, electric spark generation and frequent replacement maintenance during heavy-load operation, greatly reducing daily failure rate. 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 YC6MK350L-D20 diesel generator operate stably in low-temperature and plateau harsh environments?

This heavy-duty 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 regions. When operating at an altitude of 2500 meters, the turbocharged intercooled system automatically adjusts air intake volume and combustion status, maintaining stable 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.