50HZ SDEC 6ETAA11.8-G21 313kVA/250kW Diesel Generator Set

50HZ SDEC  313kVA/250kW Diesel Generator Set

1. Technical Parameter

2. Core Product Features

The SDEC 6ETAA11.8-G21 250kW/313kVA diesel generator set is a heavy-duty industrial power unit developed based on SDEC mature E-series engine platform. As a high-demand 313kVA SDEC diesel generator set in the medium and high-power genset market, this unit adopts 11.8L large-displacement turbocharged intercooled technology and four-valve engine structure, with sufficient power reserve and ultra-strong load resistance. It is specially optimized for long-hour full-load working conditions, solving the power supply instability problems of ordinary gensets in heavy industrial scenarios, and is widely recognized for its high durability and cost performance.

In terms of power output performance, the genset is equipped with genuine SDEC 6ETAA11.8-G21 generator-dedicated diesel engine, with an engine prime power up to 307kW, providing ample power redundancy for the whole unit. The rated prime power reaches 250kW, and the maximum emergency standby power can hit 272kW. As a high-stability 250kW prime power diesel generator, it can withstand frequent load switching and long-term continuous full-load operation. Matched with a high-precision electronic governor, the unit maintains extremely low voltage and frequency fluctuation during operation, delivering pure and stable power supply. This effectively avoids equipment stalling, precision instrument damage and production interruption caused by unstable power quality, fully adapting to high-standard power consumption demands of modern heavy industry.

In terms of operational safety and environmental adaptability, the supporting brushless self-excited alternator abandons the traditional carbon brush contact structure. This classic optimized design eliminates electric spark risks and frequent carbon brush wear faults, greatly reducing daily failure rate and improving operational safety. With H-grade high-temperature resistant insulation material and IP23 dust-proof and rain-proof protection grade, this 340kVA standby diesel generator can operate stably in various harsh environments, including dusty factory workshops, humid outdoor sites and high-temperature working areas. It supports reliable cold start at -15℃ without auxiliary heating equipment, perfectly adapting to winter low-temperature construction in northern regions and long-term outdoor fixed power supply scenarios, with far stronger environmental tolerance than ordinary medium-power generator sets.

In terms of structural durability and operational economy, the SDEC E-series industrial engine has passed strict industrial durability tests and decades of market verification, with mature manufacturing technology and stable overall performance. The optimized mechanical direct injection fuel system ensures sufficient power output under heavy load, and the full-load fuel consumption is stably controlled at 73.3L/H, maintaining a reasonable energy-saving level for heavy-duty 313kVA-class gensets. The whole machine adopts reinforced body structure and standardized integrated pipeline layout, effectively reducing oil leakage, air leakage and water leakage risks. The universal parts design and nationwide after-sales service system of SDEC greatly lower daily maintenance difficulty and long-term operating costs for enterprise and engineering users.

In terms of functional scalability and intelligence, the genset supports diversified customized upgrades to meet different scenario requirements. The optional silent canopy can effectively reduce operating noise, complying with urban environmental protection standards and suitable for construction projects near residential areas and commercial zones. The customized rainproof and dustproof enclosure enables long-term outdoor unattended fixed installation. Equipped with an ATS automatic transfer switch, the unit can realize unmanned automatic start-stop and seamless switching between municipal power and generator power. The optional remote monitoring module supports real-time viewing of operating data and active fault alarm, greatly improving the intelligent level and power guarantee reliability of the equipment.

3. Main Application Scenarios

Relying on excellent heavy-load resistance, stable long-term operation performance and strong environmental adaptability, the SDEC 6ETAA11.8-G21 diesel generator set covers multiple high-demand fields such as heavy industrial production, large-scale infrastructure engineering, key public facilities, mining operations and emergency power guarantee, and is the preferred high-power power supply equipment for medium and large high-load scenarios.

Heavy Industrial Production Scenarios: It is widely used as continuous prime power and emergency standby power for large manufacturing factories, heavy machinery processing bases, industrial parks and mining enterprises. The stable 250kW prime power output fully meets the long-term operation demands of high-power production lines, forging and stamping equipment, mechanical processing units and industrial electrical systems. It can serve as the main off-grid power source for remote industrial zones and backup power for grid-connected key enterprises, effectively avoiding large-scale production shutdown and economic losses caused by sudden mains power failure or voltage fluctuation.

Key Public & Commercial Facility Scenarios: This high-power industrial genset provides core emergency power guarantee for large shopping malls, super high-rise office buildings, star hotels, municipal hospitals, medium-sized data centers and urban traffic hubs. These key scenarios have zero tolerance for power interruption. When encountering municipal power grid failure, seasonal power rationing or routine power grid maintenance, the unit can start quickly and complete seamless power switching, ensuring the normal operation of elevators, medical precision instruments, fire protection systems, monitoring equipment and server room facilities, and safeguarding public safety and stable commercial operation.

Large-Scale Infrastructure Engineering Scenarios: It is the mainstream temporary power supply equipment for highway reconstruction, bridge engineering, water conservancy projects, municipal infrastructure upgrading and large outdoor construction sites. Benefiting from IP23 dust and rain resistance, low-temperature startup performance and strong anti-load impact capability, the unit can adapt to complex and harsh outdoor construction environments, providing stable and lasting power support for heavy construction machinery, on-site lighting and temporary living and office facilities.

Field Operation & Emergency Rescue Scenarios: It is perfectly applicable to off-grid power supply for remote field exploration bases, large logistics parks, communication base station clusters and pastoral mining areas. In addition, it can be used as emergency power supply for natural disaster rescue, power grid emergency maintenance and sudden regional power outage accidents, providing reliable continuous high-power power guarantee for field operations and emergency disposal work.

4. Core Product Purposes

As a professional heavy-duty high-power industrial diesel generator set, the core purpose of the 6ETAA11.8-G21 SDEC diesel generator is to provide stable, efficient and low-failure full-scenario high-power power guarantee for industrial and engineering high-load scenarios, covering three core functional positioning: off-grid main power supply, grid-connected emergency standby power supply and power peak shaving.

Firstly, it acts as off-grid prime power supply equipment. For remote construction bases, mining areas, field operation teams and industrial zones without complete municipal power grid coverage, the 250kW/313kVA high-power output serves as the long-term main power source to provide 24-hour uninterrupted power supply for large production equipment, living facilities and office systems. Its durable four-valve engine structure and stable fuel supply system support long-term continuous operation, solving the high-power power shortage problem of off-grid large-scale projects.

Secondly, it undertakes grid-connected emergency standby power supply for key industries and units. For industrial manufacturing enterprises, medical institutions, data centers and public service facilities that cannot tolerate power interruption, the genset acts as an essential backup power source for the municipal power grid. In case of unexpected power failure, power grid faults or seasonal power rationing, it can quickly take over full load operation to ensure uninterrupted operation of core production and service equipment, avoiding safety accidents and massive economic losses caused by power outages.

Thirdly, it functions as an effective power peak shaving device for enterprise power consumption. During peak periods of regional power grid tension and insufficient power supply, the genset can independently bear part of the high-load production power demand, relieve enterprise power consumption pressure, prevent production stagnation caused by power grid power limits, and ensure continuous and stable progress of large-scale production and operation tasks.

5. Common FAQ

Q1: What is the practical difference between prime power and standby power of the 6ETAA11.8-G21 generator set?

A1: The 250kW/313kVA prime power is the rated continuous operating power of the genset, supporting 24-hour long-term uninterrupted operation and suitable for daily off-grid main power supply and long-term fixed high-load industrial operation. The 272kW/340kVA standby power is short-time emergency peak power, which is about 10% higher than the prime power. It is only designed for temporary emergency power supply after mains power failure and is prohibited from long-term full-load operation. In actual on-site engineering use, professional operators recommend controlling the conventional operating load within 80% to 90% of the prime power to reduce engine operating load, avoid excessive wear and extend the overall service life of the genset.

Q2: What are the actual usage advantages of the brushless self-excited alternator equipped on this SDEC genset?

A2: This 313kVA industrial diesel generator adopts a high-performance brushless self-excited alternator, which has obvious practical advantages over traditional brushed alternators. It completely eliminates carbon brush wear, friction sparks and contact failure problems during high-load operation, greatly improving operational safety and reducing daily failure rates. Matched with H-grade super heat-resistant insulation and IP23 dust-proof and rain-proof protection standard, it can resist high temperature, dust and moisture erosion effectively. The output voltage and frequency waveform is stable and clean, causing no impact damage to precision instruments and high-power industrial equipment. Meanwhile, it realizes nearly maintenance-free daily operation, saving a large amount of manual maintenance time and vulnerable part replacement costs for users.

Q3: What is the fuel consumption level and standard maintenance cycle of the 6ETAA11.8-G21 genset?

A3: The full-load fuel consumption of the unit is 73.3L/H, which is a standard fuel consumption level for heavy-duty 313kVA–340kVA industrial generator sets, fully matching long-term high-power continuous operation requirements. For daily maintenance, users only need to regularly check fuel stock, cooling water level, pipeline tightness and unit operating sound. Routine maintenance including engine oil replacement, filter element replacement and radiator dust cleaning is required every 200 operating hours. A comprehensive equipment inspection, component fastening and overall overhaul is recommended every 1000 operating hours. Benefiting from the mature SDEC E-series four-valve engine technology and optimized brushless alternator structure, the unit features stable performance and lower comprehensive operation and maintenance costs than ordinary high-power gensets.