50HZ Yuchai YC6TD780-D31 450kW/562.5kVA Diesel Generator Set

50HZ Yuchai 450kW/562.5kVA Diesel Generator Set
1.Technical Parameters
Parameter Item | Technical Data |
Generator Set Model | YC6TD780-D31 Yuchai Diesel Generator Set |
Rated Frequency | 50Hz |
Prime Power (kW/kVA) | 450kW / 562.5kVA |
Standby Power (kW/kVA) | 500kW / 625kVA |
Full Load Fuel Consumption | 130.8 L/H (100% load) |
Rated Voltage | 400/230V (Three-phase four-wire) |
Power Factor | 0.8 (lagging) |
Engine Brand | YUCHAI (Yuchai Machinery) |
Engine Model | YC6TD780-D31 |
Engine Type | 6-cylinder, inline, 4-stroke, water-cooled, turbocharged & intercooled |
Fuel Supply Mode | Electronic fuel injection |
Alternator Exciter Type | Brushless, self-excited |
Insulation Grade | H Grade |
Protection Grade | IP23 |
Performance Standard | GB2820 G3 Grade |
Cooling Method | Closed-cycle water cooling |
Start Mode | Electric start (12V/24V optional) |
2. Product Core Features
The Yuchai YC6TD780-D31 450kW industrial diesel generator set is a medium-large power generation equipment tailored for commercial and industrial power demand. As a hot-selling 562.5kVA prime power diesel generator, it integrates Yuchai’s mature TD series engine technology and high-performance brushless alternator, balancing high power output, low fuel consumption and long-term operational stability, which is widely recognized in the industrial power supply market.
2.1 High Power Output & Strong Load Capacity
Equipped with genuine Yuchai YC6TD780-D31 dedicated power engine, the unit delivers 450kW continuous prime power and 500kW emergency standby power. With excellent transient load response capability, it can adapt to sudden load surge scenarios, effectively avoiding power shutdown caused by load fluctuation. The 50Hz fixed frequency design fully matches the national standard power supply specification, ensuring stable and consistent three-phase voltage output for industrial equipment and precision electrical devices.
2.2 Energy-saving & Low Operating Cost
This 562.5kVA diesel generator adopts electronic fuel injection technology and turbocharged intercooled air intake structure. The full-load fuel consumption is controlled at 130.8L/H, with outstanding fuel economy among 400-500kW grade generator sets. Optimized combustion structure reduces unnecessary fuel waste, greatly cutting the long-term operating and maintenance cost for enterprises, making it a cost-effective choice for long-term continuous power supply.
2.3 High Safety & Durability
Matched with brushless self-excited alternator, the unit features low failure rate and no carbon brush wear, reducing daily maintenance frequency. H-grade insulation provides ultra-high temperature resistance, effectively preventing insulation aging and breakdown during long-time high-load operation. IP23 professional protection grade can resist dust, rain splash and foreign object invasion, adapting to complex outdoor and workshop working environments. The engine body adopts high-strength alloy cast iron and integral forged steel crankshaft, passing tens of thousands of hours of durability tests, with strong wear resistance and stable mechanical performance.
2.4 Easy Maintenance & Wide Adaptability
The one-cylinder-one-head structure of the YC6TD780-D31 engine simplifies disassembly and maintenance steps, facilitating daily inspection and parts replacement for engineering personnel. The unit supports fixed installation and trailer mobile power station customization, with flexible installation forms. It is equipped with a complete intelligent protection system, covering overvoltage, undervoltage, overload, over speed and high water temperature protection, realizing automatic fault alarm and shutdown to ensure equipment and circuit safety.
3. Application Scenarios
As a high-reliability industrial backup and continuous power supply equipment, Yuchai 450kW diesel generator set is suitable for multiple scenarios that require stable power guarantee, covering industrial production, public infrastructure, commercial real estate and special engineering fields.
3.1 Industrial Production Field
It is widely used in factories, mining enterprises, processing plants and industrial parks. For manufacturing enterprises with high power demand and strict power supply continuity requirements, this 562.5kVA diesel generator can serve as both conventional power supply and emergency backup power to avoid production shutdown and economic losses caused by grid power failure. Its strong load-bearing capacity perfectly matches the operation of large mechanical equipment and production lines.
3.2 Public & Civil Infrastructure
The unit is an ideal power backup solution for hospitals, data centers, schools, municipal engineering and communication base stations. Medical equipment, server room devices and teaching facilities cannot tolerate power interruption. The 500kW standby power capability can quickly switch on power supply in case of grid outage, ensuring the normal operation of medical rescue, data storage and public service facilities.
3.3 Commercial & Real Estate Supporting
High-rise buildings, shopping malls, office buildings and residential communities are equipped with this Yuchai diesel generator set as emergency power supply. It can supply power for fire control equipment, elevator systems, lighting and weak current systems during power cuts, ensuring building safety and basic living and business operation order.
3.4 Special Engineering & Outdoor Projects
It is applicable for field construction sites, road and bridge engineering, new energy projects and breeding bases without stable grid power. The mobile customized version can adapt to harsh outdoor environments, providing stable 50Hz AC power for field construction equipment, living facilities and professional breeding equipment, solving the power supply pain point of remote engineering projects.
4. Core Uses
Positioned as a medium-large power diesel generator set, the YC6TD780-D31 unit focuses on emergency power backup, continuous power supply and power guarantee for special scenarios, solving various power supply problems such as grid instability, sudden power failure and no grid coverage.
4.1 Emergency Standby Power Supply
It is the core use of this 450kW prime power generator set. When the municipal grid fails, undergoes power maintenance or sudden power outage, the unit can start quickly and switch power supply automatically, covering the power demand of key equipment in factories, hospitals, buildings and data centers, avoiding safety accidents and economic losses caused by power interruption.
4.2 Long-term Continuous Power Supply
For remote areas, field construction sites and industrial parks with insufficient grid power capacity, the unit can be used as a conventional main power supply. With stable 450kW continuous power output and low fuel consumption operation, it can support long-term uninterrupted operation of production and living equipment, meeting the daily power consumption demand of medium and large-scale power consumption scenarios.
4.3 Power Grid Peak Shaving & Power Stabilization
In industrial areas with unstable grid voltage and frequent peak power shortage, the Yuchai diesel generator set can assist the grid in peak shaving operation. It stabilizes grid voltage and frequency, suppresses power fluctuation, protects precision industrial equipment and electrical devices from damage caused by unstable power supply, and improves the safety and stability of regional power consumption.
4.4 Special Scenario Power Guarantee
It provides professional power support for national defense engineering, municipal emergency projects, large-scale events and breeding industry. The IP23 protection grade and H-grade insulation enable the unit to operate stably in high temperature, dust and humid environments, realizing all-weather reliable power guarantee for special industry scenarios.
5. Common FAQ
Q1: What is the difference between prime power and standby power of YC6TD780-D31 generator set?
Prime power (450kW/562.5kVA) refers to the continuous adjustable power that can operate for a long time with 100% load, which is suitable for long-term conventional power supply scenarios. Standby power (500kW/625kVA) is emergency peak power, which can only be used for short-time power supply in case of grid failure, with a cumulative use time of no more than 500 hours a year. It cannot operate at full load for a long time, otherwise it will accelerate equipment wear and affect service life.
Q2: What are the key advantages of brushless self-excited alternator of this unit?
Compared with traditional brushed alternators, the brushless self-excited structure cancels carbon brush and slip ring components, realizing zero wear of core rotating parts. It effectively reduces equipment failure rate, avoids spark interference during operation, and is more suitable for precision equipment and flammable and explosive scenarios. Meanwhile, it lowers daily maintenance workload, only requiring regular dust cleaning and circuit inspection, greatly reducing later operation cost.
Q3: How to reduce the fuel consumption of 450kW Yuchai diesel generator set during operation?
First, avoid long-term no-load or light-load operation, and keep the operating load between 60%-80% of rated power, which is the most energy-efficient working range. Second, regularly replace diesel filter, oil filter and air filter to ensure sufficient combustion. Third, check the cooling system and intake system regularly to avoid power drop caused by poor heat dissipation and insufficient air intake. In addition, use qualified brand diesel oil and standard lubricating oil to optimize combustion efficiency and reduce comprehensive fuel consumption.

