50HZ Yuchai YC4D90-D34 50kW/62.5kVA Diesel Generator Set

50HZ Yuchai  50kW/62.5kVA Diesel Generator Set

1. Complete Technical Parameter Table

The following table sorts out the official factory calibration parameters and industry universal standard configurations of the Yuchai YC4D90-D34 diesel generator set. All data is verified through bench testing and actual on-site operation, covering generator set power indicators, original diesel engine core parameters, alternator performance and conventional operating specifications. It supports equipment selection, project bidding, installation commissioning and daily maintenance work for engineering and industrial users.

2. Product Features

The Yuchai YC4D90-D34 50kW/62.5kVA diesel generator set is a high-power and high-reliability power generation device built on Yuchai mature 4D-T3 turbocharged engine platform. As a mainstream 62.5kVA diesel generator widely used in industrial production and large-scale engineering projects, this unit adopts original Yuchai power configuration with upgraded reinforced mechanical structure. It features strong load impact resistance, stable continuous power supply and low failure rate, making up for the defects of insufficient power reserve and poor durability of ordinary medium and large-power generator sets on the market.

In terms of power performance, the unit supports 50kW long-term stable prime power operation and 55kW emergency standby power output. The sufficient power margin allows the equipment to adapt to long-duration full-load continuous operation, and can cope with instantaneous startup surge of multiple high-power mechanical equipment and electrical loads without voltage drop or frequency deviation. Equipped with high-performance brushless self-excited alternator and high-precision AVR automatic voltage regulator, the 50Hz fixed-frequency three-phase voltage output remains balanced and stable all the time. Adopting H-grade ultra-high temperature resistant insulation materials, the alternator effectively avoids insulation aging and circuit breakdown caused by long-term high-load operation, providing safe and stable power guarantee for industrial precision instruments and production line equipment.

Low maintenance cost and strong environmental adaptability are the core practical advantages of this Yuchai 50kW standby diesel generator set. Different from traditional brushed generators that require regular carbon brush inspection and replacement, the brushless self-excited structure eliminates wearable vulnerable parts, realizing long-term maintenance-free operation. It greatly reduces daily equipment maintenance workload and later operating costs, which is very suitable for unattended factory standby power scenarios. The IP23 professional protection grade can effectively block outdoor dust, debris and splashing rainwater, adapting to open-air placement and harsh construction site working environments. The reinforced cylinder block and crankshaft structure improves the unit's vibration resistance and overall structural stability, extending the service life of the whole machine.

In terms of fuel economy and operational stability, the YC4D90-D34 turbocharged diesel engine adopts high-pressure common rail electronic fuel injection technology and optimized ω-type direct injection combustion chamber design. The fuel combustion is fully optimized, and the full-load fuel consumption is stably controlled at 17L/H. Even in long-term variable-load operation, it can maintain stable energy-saving performance without excessive fuel consumption. The four-cylinder in-line water-cooled structure runs smoothly with low vibration, effectively reducing mechanical loss. The closed circulating water cooling system ensures continuous and efficient heat dissipation, and the unit will not overheat and shut down even in high-temperature summer working environments.

The whole machine adopts integrated compact base design with reasonable internal layout and small floor space, supporting fixed indoor installation and mobile trailer refitting. It can meet the dual needs of long-term fixed emergency standby power for industrial plants and short-term mobile temporary power for large-scale engineering construction. Complying with non-road National Stage III emission standards, the unit has low exhaust pollution and meets environmental protection requirements of various construction and industrial zones. With Yuchai’s strict factory quality inspection and perfect national after-sales service network, this 62.5kVA diesel generator has stable quality and high cost performance, which is a preferred large medium-power power generation equipment for industrial and engineering users.

3. Application Scenarios

With strong load capacity, stable power output, excellent environmental adaptability and low operating failure rate, the YC4D90-D34 Yuchai diesel generator set is widely used in industrial production standby power, large engineering temporary power supply, outdoor field off-grid power generation and commercial public facility backup power, covering most large-load medium-power power demand scenarios.

3.1 Industrial Production Emergency Standby Power

This 50kW diesel generator is the core backup power equipment for medium-sized processing factories, mechanical manufacturing workshops, food processing plants, constant-temperature cold storage and industrial supporting facilities. For industrial production lines and precision processing equipment that cannot tolerate power outage, the unit can start quickly and complete seamless power switching after municipal grid failure. It effectively avoids product scrapping, equipment shutdown damage and production progress delay caused by sudden power interruption, ensuring the continuous and stable operation of industrial production.

3.2 Large Construction & Municipal Engineering Temporary Power

It is widely used for temporary power supply of large-scale road reconstruction, municipal pipeline renovation, water conservancy hub projects, bridge engineering and infrastructure construction. The strong surge resistance and high-power stable output can fully meet the simultaneous power consumption of multiple welding machines, cutting equipment, engineering machinery and on-site large-area construction lighting. The dust-proof and vibration-resistant body structure adapts to harsh construction site environments, and the flexible mobile design supports frequent site transfer, effectively improving overall construction efficiency.

3.3 Outdoor Field Operation Off-grid Power Supply

The unit is perfectly applicable for field geological exploration, large-scale forest fire prevention, outdoor emergency rescue engineering, remote mountain road construction and field scientific research operations. In remote areas without municipal grid coverage, it can be used as an independent mobile power station to provide long-term stable 380V three-phase high-power power for field detection instruments, communication relay equipment and large operational auxiliary facilities. The reliable DC24V electric start system ensures smooth startup in low-temperature and dry field environments, with strong environmental tolerance.

3.4 Commercial & Public Facility Backup Power

It is commonly used for emergency standby power of large community clusters, commercial plazas, hotels, supermarkets, scenic area supporting facilities and communication base stations. During municipal grid power failure or peak power limit periods, the unit can provide stable power guarantee for building lighting, monitoring systems, weak current equipment and public service facilities, avoiding operational stagnation and public service paralysis caused by power outages, and ensuring the normal operation of urban public and commercial facilities.

4. Core Purposes

The core purpose of the Yuchai YC4D90-D34 50kW/62.5kVA diesel generator set is to provide high-stability emergency standby power and high-power off-grid mobile power supply for industrial production, engineering construction and public service fields. It solves power supply risks such as municipal grid instability, sudden power failure and no grid coverage, and guarantees the continuous, safe and efficient operation of medium and high-power electrical equipment. It is a high-cost-performance universal power generation equipment integrating industrial standby and engineering temporary power generation.

Firstly, it undertakes key industrial emergency power backup tasks. As a high-performance 62.5kVA standby diesel generator, it has sufficient standby power reserve and fast response speed. It can automatically start and switch power supply in a short time after sudden grid power failure, effectively avoiding large-area industrial production shutdown losses and equipment safety accidents caused by power interruption, and protecting the stable operation of factory production lines.

Secondly, it provides sustainable high-power off-grid power support for engineering and remote scenarios. In large-scale engineering construction and unpowered remote areas, the unit acts as an independent mobile power generation system, outputting standard 50Hz frequency and stable three-phase high-power voltage. It fully meets the simultaneous power demand of multiple engineering mechanical equipment, solving the power supply bottleneck of large-scale off-grid construction teams.

Thirdly, it balances power performance and long-term operational economy. With calibrated 17L/H full-load fuel consumption and Yuchai’s mature turbocharged energy-saving combustion technology, the unit maintains controllable comprehensive operating costs while providing strong power output. The brushless maintenance-free design and IP23 high-standard protection structure reduce equipment failure rate and later maintenance investment, realizing long-term stable and low-cost power generation operation.

Finally, as an upgraded flagship model of Yuchai 4D series medium and large-power generator sets, it fills the market gap of high-reliability 50kW industrial power generation equipment. It perfectly matches the power demand of medium-sized industrial enterprises, large engineering construction teams and public property management units, and has become one of the most widely recognized and applied general-purpose diesel generator sets in the medium and large-power market.

5. FAQ - Common Frequently Asked Questions

Q1: What is the actual fuel consumption of YC4D90-D34 generator set under different working loads?

A1: The official factory calibrated full-load (100% load) fuel consumption of this Yuchai 62.5kVA diesel generator set is 17L/H. In actual on-site operation, fuel consumption changes linearly with the working load. Under 50% light load, the fuel consumption is about 8.2-8.8L/H; under 75% conventional daily working load, the fuel consumption is controlled at 12.5-13.2L/H. Adopting high-pressure common rail fuel injection and optimized combustion technology, the fuel burns fully and evenly, with a stable fuel consumption curve. There will be no sudden fuel surge during long-term continuous operation, which can effectively control daily power generation costs for industrial standby and engineering power supply users.

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

A2: This Yuchai 50kW diesel generator adopts professional industrial-grade brushless self-excited alternator, which has obvious practical advantages over traditional brushed alternators. Firstly, it removes wearable carbon brush parts, realizing true maintenance-free daily operation, eliminating regular carbon brush replacement and maintenance costs, and greatly reducing on-site equipment management pressure. Secondly, matched with intelligent AVR automatic voltage regulation technology, the voltage output is ultra-stable with almost no current fluctuation, which can well protect industrial production equipment and precision instruments from burnout damage. Thirdly, the fully enclosed structure cooperates with H-grade ultra-high temperature insulation and IP23 protection grade, with excellent dust-proof, rain-proof and high-temperature resistance, adapting to various complex and harsh industrial and construction site environments.

Q3: How is the environmental adaptability and startup stability of the YC4D90-D34 generator set?

A3: This medium and large-power Yuchai generator set has excellent environmental adaptability and ultra-high startup reliability. It adopts standard DC24V electric start system, which can achieve one-time successful startup in conventional low-temperature, dry and cold environments without manual auxiliary start. The applicable ambient temperature ranges from -15℃ to 45℃, adapting to seasonal temperature changes in most regions. The closed circulating water cooling system effectively controls the unit temperature, avoiding overheating shutdown during long-term full-load operation in high-temperature environments. The IP23 protection grade resists daily dust erosion and splashing rainwater, supporting outdoor open-air placement and indoor fixed installation. It operates stably in industrial workshops, construction sites, field operation environments and public facility scenarios with strong compatibility.