50HZ Yuchai YC6TH1220-D31 720kW/900kVA Diesel Generator Set

 50HZ Yuchai  720kW/900kVA Diesel Generator Set

1.Technical Parameters

2. Core Product Features

The Yuchai YC6TH1220-D31 720kW/900kVA diesel generator set is a high-end heavy-duty power generation equipment built on Yuchai mature TH series high-load engine platform. As a popular 50Hz high-power industrial diesel generator set in the market, it is specially developed for large-scale high-load continuous power supply and emergency power backup scenarios. Adopting twin-turbocharged intercooled technology and electronic precise fuel control system, this 900kVA diesel generator delivers stable power output, excellent load impact resistance and reliable long-duration operation performance. It has low failure rate and convenient daily maintenance, making it a cost-effective high-power power supply solution for heavy industry, municipal key projects and large-scale engineering construction.

2.1 Twin-Turbo High-Power Design, Strong Load Adaptability

Equipped with genuine Yuchai YC6TH1220-D31 dedicated generator engine, this unit features professional twin-turbocharged intercooled structure and 6-cylinder four-valve high-efficiency combustion design. It can stably output 720kW long-term continuous prime power and support 800kW short-time emergency standby power supply, with sufficient power reserve to cope with various heavy-duty working conditions. Different from ordinary single-turbo generator sets, the twin-turbo structure greatly improves intake efficiency and power response speed, ensuring instantaneous power compensation when the load surges sharply. In actual industrial operation, it can maintain stable 50Hz frequency and 400V three-phase voltage output without voltage fluctuation, frequency drift or sudden shutdown, fully meeting the long-term high-load operation demand of large industrial equipment and automated production lines.

2.2 Electronic Fuel Control, Stable Operation and Controllable Consumption

This 720kW Yuchai diesel generator set adopts electronically controlled monomer pump fuel supply technology, which can intelligently adjust fuel injection volume and injection timing according to real-time load changes, realizing precise oil-gas matching and full combustion. The full-load fuel consumption is stably controlled at 199.1L/H, achieving a good balance between high-power output and fuel economy. The optimized combustion chamber structure reduces heat loss and invalid fuel waste, effectively lowering the daily operating fuel cost for enterprises. Meanwhile, the engine adopts serialized modular design with high parts versatility, which avoids the problem of difficult matching of special accessories, greatly reducing the difficulty and cost of later equipment maintenance and parts replacement.

2.3 High Safety Grade, Durable and Adaptable to Harsh Environments

Matched with industrial-grade brushless self-excited alternator, the unit completely abandons the traditional carbon brush friction structure, eliminating mechanical wear, electric spark generation and electromagnetic interference during operation. The overall operation is safer and more stable, and will not affect the normal operation of precision instruments, communication equipment and flammable and explosive production facilities. Equipped with H-grade super high-temperature resistant insulation materials, the alternator can resist long-term high-load and high-temperature aging, effectively preventing insulation breakdown, electric leakage and other common faults. The IP23 professional dust-proof and splash-proof protection grade enables the unit to adapt to open-air construction sites, dusty factory workshops, humid outdoor machine rooms and other complex working environments. The high-strength cast iron engine body and integral forged crankshaft ensure strong structural rigidity, low operation vibration and ultra-long service life.

2.4 Intelligent Full Protection System, Low Maintenance Cost

This 800kW standby diesel generator set is equipped with a complete intelligent monitoring and fault self-protection system, covering overvoltage, undervoltage, overload, overspeed, high water temperature, low oil pressure and automatic shutdown protection functions. It can monitor the unit’s operating temperature, oil pressure, voltage, frequency and other core data in real time, and automatically alarm and cut off power in case of abnormal conditions, effectively protecting equipment circuits and user property safety. The reasonable internal layout simplifies daily inspection and maintenance procedures. Users can complete filter replacement, oil detection, circuit debugging and daily dust cleaning without professional technical operation, greatly reducing daily equipment management pressure and after-sales maintenance workload.

3. Main Application Scenarios

With the advantages of large power reserve, strong stability, fast load response and wide environmental adaptability, the Yuchai YC6TH1220-D31 high-power diesel generator set is widely used in heavy industrial production, municipal key infrastructure, large commercial supporting facilities and off-grid field engineering. It can be used as both long-term off-grid main power supply and municipal grid emergency backup power supply, covering almost all large-scale high-power and high-reliability power demand scenarios.

3.1 Heavy Industry, Mining and Chemical Industrial Parks

This 900kVA industrial diesel generator set is the preferred power guarantee equipment for large manufacturing factories, mining enterprises, metallurgical processing plants and chemical industrial parks. These scenarios have large daily power consumption and extremely high requirements for power supply continuity. The 720kW continuous prime power can support 24-hour uninterrupted operation of heavy mechanical equipment, automated assembly lines and industrial supporting facilities. When the municipal grid is cut off, limited in power or fails suddenly, the 800kW high standby power can quickly take over the power supply, avoid large-area production shutdown and equipment damage, and effectively reduce economic losses caused by power interruption.

3.2 Municipal Key Public Infrastructure

It is widely applied in large data centers, communication hub base stations, tertiary hospitals, airport and railway supporting facilities, and municipal emergency engineering projects. As key public infrastructure closely related to social operation, these scenarios have zero tolerance for power failure. Sudden power interruption will lead to data loss, medical rescue stagnation and public facility paralysis. This Yuchai high-power generator set features quick start and seamless power switching, which can continuously supply stable and reliable power for precision medical equipment, server room systems, monitoring equipment and public service facilities, ensuring the stable operation of urban core infrastructure.

3.3 Large Commercial Complexes and Super High-Rise Buildings

For large shopping malls, commercial complexes, super high-rise office buildings and large-scale residential communities, this generator set serves as standard fire emergency and backup power supply equipment. It fully complies with national building fire safety acceptance standards. In case of grid power failure, planned power maintenance and peak power limitation in peak power consumption periods, the unit can start instantly to supply stable power for fire linkage systems, building elevators, emergency lighting, security monitoring and weak current systems, ensuring building fire safety and personnel evacuation safety in emergency situations.

3.4 Off-Grid Field Engineering and Special Scenarios

In remote road and bridge construction sites, new energy project bases, large-scale breeding parks, field operation teams and national defense engineering without stable municipal grid coverage, this 50Hz Yuchai diesel generator set can be used as the main power supply equipment. Relying on excellent high-temperature resistance, dust resistance and splash resistance, it can operate stably in harsh outdoor environments, providing continuous and stable power for field construction machinery, living supporting equipment and professional production facilities, solving the power supply blank problem of off-grid large-scale engineering projects.

4. Core Product Uses

As a flagship high-power heavy-duty generator set of Yuchai TH series, the YC6TH1220-D31 unit focuses on emergency power backup, off-grid continuous power supply, grid peak shaving and special scenario all-weather power guarantee, which can flexibly meet the diversified high-standard power demand of industrial and commercial users.

4.1 Municipal Grid Emergency Standby Power Supply

Emergency power backup is the most mainstream use of the 720kW prime power diesel generator set. In daily state, the unit keeps hot standby. Once the municipal power grid trips, fails or undergoes planned overhaul, the equipment can start quickly and complete seamless power switching in a short time. It focuses on protecting core production equipment and key public facilities, avoiding safety accidents and economic losses caused by sudden power interruption, and providing reliable emergency power support for various high-demand scenarios.

4.2 Long-Term Off-Grid Main Power Supply

In remote areas, field operation sites and industrial zones with insufficient grid capacity and unstable voltage, the 900kVA continuous stable power output can be used as long-term main power supply. With excellent continuous operation stability and strong load resistance, it can support 24-hour uninterrupted operation of production and living equipment, completely replacing municipal grid power supply, and fully meeting the long-term high-power consumption demand of off-grid engineering and large-scale production scenarios.

4.3 Power Grid Peak Shaving and Voltage Stabilization

In industrial areas with tight grid power supply and obvious peak power shortage, the unit can assist the municipal grid in peak shaving operation. During peak power consumption periods, it supplements grid power shortage, stabilizes 50Hz frequency and 400V rated voltage, suppresses power fluctuation and voltage drop, effectively protects precision electrical equipment and automated production lines from damage caused by unstable power supply, and improves the overall stability of regional power consumption.

4.4 All-Weather Power Guarantee for Special Industries

Relying on H-grade high-temperature resistance insulation and IP23 high protection grade, the unit adapts to various harsh working conditions such as high temperature, humidity and dust. It can provide professional all-weather power guarantee for municipal emergency rescue, national defense engineering, large-scale event power guarantee and industrial breeding industries, meeting the high-reliability power demand of special industry scenarios.

5. Common FAQ

Q1: What is the actual usage difference between prime power and standby power of YC6TH1220-D31 generator set?

The 720kW/900kVA prime power is continuous rated power, supporting long-term full-load stable operation, and is suitable for daily off-grid main power supply and long-time continuous load operation. The 800kW/1000kVA standby power is emergency peak power, only used for short-time power supply when the municipal grid fails. According to industry specifications, the cumulative annual use time of standby power shall not exceed 500 hours, and long-term full-load operation is prohibited. Frequent overuse of standby power will accelerate engine mechanical wear, increase equipment failure rate and significantly shorten the overall service life of the generator set.

Q2: What are the practical advantages of the brushless self-excited alternator equipped on this Yuchai generator set?

Different from traditional brushed alternators, the brushless self-excited structure cancels carbon brushes and slip ring friction components, fundamentally eliminating mechanical wear, electric spark and electromagnetic interference during operation. In actual use, it has lower failure rate and higher operation safety, and will not interfere with precision instruments and communication equipment. Meanwhile, it greatly reduces daily maintenance workload, no need for frequent carbon brush inspection and replacement, only regular dust cleaning and oil circuit inspection are required, which effectively saves users’ later operation and maintenance time and economic cost.

Q3: How to reduce the fuel consumption of YC6TH1220-D31 720kW diesel generator set in daily operation?

First, avoid long-term no-load idle and light-load operation, and keep the unit operating load stable at 60%-80% of rated power, which is the most energy-efficient working range for this TH series high-power unit. Second, regularly replace air filters, diesel filters and oil filters to ensure sufficient air intake and full fuel combustion. Third, regularly check the twin-turbocharged intercooled system and closed-cycle water cooling system to avoid power attenuation and increased fuel consumption caused by poor heat dissipation and insufficient air intake. In addition, using qualified standard diesel oil and special lubricating oil can effectively optimize combustion efficiency and reduce comprehensive operating fuel consumption.