50HZ Yuchai YC6TD900-D31 550kW/687.5kVA Diesel Generator Set

 50HZ Yuchai  550kW/687.5kVA Diesel Generator Set

1.Technical Parameters

2. Core Product Features

The Yuchai YC6TD900-D31 550kW/687.5kVA diesel generator set is a high-power industrial power generation equipment built on Yuchai’s mature TD series heavy-duty engine platform. As a hot-selling 50Hz industrial diesel generator set for large-scale power demand scenarios, it integrates electronic fuel injection technology, turbocharged intercooled intake system and high-performance brushless alternator, balancing strong power output, stable continuous operation and low failure rate. It is widely recognized in the industry for reliable emergency power supply and long-term off-grid power generation performance, becoming the preferred power guarantee equipment for large industrial, municipal and commercial projects.

2.1 Heavy-Duty Power Output & Excellent Load Adaptability

Equipped with genuine Yuchai YC6TD900-D31 heavy-duty diesel engine, this unit delivers 550kW stable long-term prime power and 600kW high-power emergency standby power. The 6-cylinder inline four-stroke structure and four-valve design ensure sufficient air intake and efficient combustion, bringing abundant power reserve and outstanding transient load response capability. It can cope with sudden load surge and peak power fluctuation in large industrial scenarios without voltage drop or frequency instability. The fixed 50Hz frequency and 400V three-phase stable output fully meet the power supply standards of precision industrial equipment, large production lines and municipal public facilities, solving the load insufficiency problem of ordinary medium-power generator sets in heavy-duty working conditions.

2.2 Optimized Fuel Economy & Low Comprehensive Operating Cost

Adopting advanced electronic direct injection fuel supply technology and optimized combustion chamber structure, the full-load fuel consumption of this 687.5kVA diesel generator set is stably controlled at 154.3L/H. Compared with peer high-power generator sets of the same grade, it has more outstanding energy-saving performance. The precisely calibrated fuel injection system improves fuel combustion efficiency and reduces invalid fuel waste. Meanwhile, the unit adopts serialized and standardized structural design with high parts versatility, effectively reducing the cost of later replacement parts and daily maintenance. For enterprises requiring long-term continuous power supply or frequent emergency standby power, it can significantly reduce long-term operational investment and create higher cost performance.

2.3 High Safety Grade & Super Strong Environmental Adaptability

Matched with industrial-grade brushless self-excited alternator, the unit eliminates traditional carbon brush friction and slip ring wear, avoiding electric spark interference and mechanical failure during operation, with higher operational safety and stability. The H-grade high-temperature resistant insulation material can withstand long-term high-load and high-temperature operating environments, effectively preventing insulation aging, breakdown and electric leakage faults. The IP23 professional protection grade can resist external dust, debris and splash rainwater, adapting to open-air construction sites, factory workshops, outdoor machine rooms and other complex working scenarios. The engine body is made of high-strength alloy cast iron, with integral forged crankshaft and one-cylinder-one-head structure, which has passed long-duration durability bench tests, featuring strong wear resistance, stable mechanical performance and long service life.

2.4 Intelligent Protection & Simple Daily Maintenance

This 600kW standby diesel generator set is equipped with a complete intelligent monitoring and 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 status in real time, automatically alarm and cut off power in case of faults, effectively protecting equipment and circuit safety. The reasonable internal layout simplifies daily inspection and maintenance procedures. Users can quickly complete filter replacement, oil level inspection, circuit debugging and daily dust cleaning without complex professional operation. The low failure rate and convenient maintenance characteristics greatly reduce the daily management pressure and after-sales maintenance cost for users.

3. Main Application Scenarios

With the advantages of high power, strong stability and wide environmental adaptability, the Yuchai YC6TD900-D31 diesel generator set is widely used in heavy industry production, municipal key projects, large commercial supporting, field engineering and other fields. It can serve as both long-term main power supply and emergency backup power supply, fully covering high-power and high-stability power demand scenarios in various industries.

3.1 Heavy Industry & Mining Production Scenarios

It is specially suitable for large manufacturing factories, industrial parks, mining enterprises, metallurgical processing plants and other heavy-duty power consumption scenarios. These sites have large daily power consumption and high requirements for power supply continuity. The 550kW prime power can support long-term stable operation of large mechanical equipment, automated production lines and industrial supporting facilities. When the municipal grid is cut off or limited in power, the 600kW high standby power can quickly take over the power supply, avoid production shutdown, equipment damage and economic losses, and provide reliable power guarantee for industrial production.

3.2 Municipal & Key Public Infrastructure

This 687.5kVA diesel generator set is an essential emergency power supply equipment for hospitals, large data centers, communication hub base stations, municipal emergency engineering, airports and railway supporting facilities. These key public scenarios have zero tolerance for power interruption. Sudden power failure will lead to medical rescue stagnation, data loss and public facility paralysis. The unit features quick start and seamless power switching, which can continuously supply stable power for precision medical equipment, server room systems, monitoring equipment and public service facilities, ensuring the normal operation of urban key infrastructure.

3.3 Large Commercial Complex & High-Rise Building Supporting

It is widely applied in large shopping malls, commercial complexes, super high-rise office buildings and high-grade residential communities. As a standard fire emergency and backup power supply equipment, it can start immediately in case of grid power failure, peak power limitation and power maintenance, providing stable power for fire linkage systems, building elevators, emergency lighting, security monitoring and weak current systems. It meets national building fire safety acceptance standards and ensures building operation safety and personnel evacuation safety in emergency situations.

3.4 Off-Grid Field Engineering & Special Scenarios

For remote construction sites, road and bridge engineering, new energy project bases, large-scale breeding parks and field operation teams without stable municipal grid coverage, this 50Hz Yuchai diesel generator set can be used as the main power supply equipment. Relying on IP23 high protection performance and strong environmental adaptability, it can operate stably in high temperature, dust, humid and other 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 engineering scenarios.

4. Core Product Uses

As a high-power heavy-duty industrial generator set, the YC6TD900-D31 Yuchai unit focuses on emergency power backup, off-grid main power supply, grid peak shaving and special scenario power guarantee, flexibly responding to diverse high-standard power demand of industrial and commercial users.

4.1 Emergency Standby Power Guarantee

This is the core mainstream use of the 550kW prime power diesel generator set. In daily standby state, the unit keeps hot standby. Once the municipal grid fails, trips or undergoes planned maintenance, the equipment can start quickly and complete 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 687.5kVA continuous stable power output can be used as long-term main power supply. With excellent continuous operation stability and load resistance, it can support 24-hour uninterrupted operation of production and living equipment, completely replacing municipal grid power supply, and meeting the long-term power consumption demand of off-grid high-power scenarios.

4.3 Power Grid Peak Shaving & 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 Special Industry All-Weather Power Supply

Relying on H-grade insulation and IP23 high protection grade, the unit adapts to various harsh working conditions and is widely used in municipal emergency rescue, national defense engineering, large-scale event power guarantee and industrial breeding industries. It realizes all-weather, full-scene stable power output, meeting the high-reliability power demand of special industries and ensuring the smooth progress of various special engineering tasks.

5. Common FAQ

Q1: What is the difference between prime power and standby power of YC6TD900-D31 generator set in actual use?

The 550kW/687.5kVA prime power is continuous adjustable rated power, supporting long-term full-load stable operation, which is suitable for daily off-grid main power supply and long-time load operation. The 600kW/750kVA standby power is emergency peak power, only used for short-time power supply when municipal grid fails. According to industry norms, standby power cumulative use time shall not exceed 500 hours per year, and long-term full-load operation is prohibited. Frequent overuse of standby power will accelerate engine wear, increase failure rate and shorten the overall service life of the generator set.

Q2: What are the practical advantages of 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 application, it has lower failure rate and higher operation safety, which is very suitable for scenarios with precision instruments and flammable materials. In addition, it greatly reduces daily maintenance workload, no need for frequent carbon brush replacement, only regular dust cleaning and oil circuit inspection are required, effectively saving users’ later operation and maintenance time and cost.

Q3: How to effectively reduce the fuel consumption of YC6TD900-D31 550kW diesel generator set during daily operation?

First, avoid long-term no-load idle and light-load operation, and keep the unit operating load between 60%-80% of rated power, which is the most energy-efficient working range of this high-power unit. Second, regularly replace air filters, diesel filters and oil filters to ensure sufficient air intake and full fuel combustion. Third, inspect the cooling system and turbocharged intercooled system regularly to avoid power attenuation and increased fuel consumption caused by poor heat dissipation and insufficient air intake. Meanwhile, use qualified standard diesel oil and special lubricating oil to optimize combustion efficiency and reduce comprehensive operating fuel consumption.