50Hz 900kW/1125kVA Weichai 12M33D1108E200 Diesel Generator Set

50Hz Weichai 900kW/1125kVA Diesel Generator Set
1. Full Technical Parameter Table
This chapter comprehensively sorts out the factory standard parameters and universal industry indicators of the 50Hz 900kW/1125kVA Weichai 12M33D1108E200 diesel generator set. The complete parameter data covers unit overall performance, original Weichai 12M33 series diesel engine configuration, brushless alternator specifications and daily operating indicators, which can be directly used for industrial power project selection, equipment bidding parameter filling, on-site acceptance and daily operation management of high-power diesel generator sets.
Parameter Category | Specific Item | Technical Data |
Overall Generator Set Parameters | Rated Frequency | 50Hz |
Prime Power (Continuous Power) | 900kW/1125kVA | |
Standby Power (Emergency Peak Power) | 1000kW/1250kVA | |
Rated Voltage & Phase | 400V/230V, 3-phase 4-wire | |
Power Factor | 0.8 (lagging) | |
Rated Speed | 1500r/min | |
Full-load Fuel Consumption | 237.6L/H (100% rated load) | |
Voltage Regulation Accuracy | ≤±1% | |
Optional Unit Type | Open type, silent type, container type, rainproof type | |
Operation Mode | Long-term main power / Grid emergency standby power | |
Weichai Diesel Engine Parameters | Engine Brand | Original Weichai Power |
Engine Model | 12M33D1108E200 | |
Engine Structure | V-type 12-cylinder, four-stroke, turbocharged & intercooled | |
Engine Rated Power | 1108kW | |
Bore × Stroke | 150mm × 155mm | |
Emission Standard | China Non-Road Stage III | |
Fuel Supply Mode | Electronic high-pressure common rail injection | |
Speed Regulation Mode | Electronic automatic governing | |
Cooling System | Closed-loop forced water cooling | |
Starting Mode | 24V DC electric one-key start | |
Lubricating Oil Capacity | 146L | |
Alternator Core Parameters | Excitation Type | Brushless, self-excited |
Insulation Grade | H Grade | |
Protection Grade | IP23 | |
Regulation System | AVR automatic constant voltage regulation |
2. Product Features
The Weichai 12M33D1108E200 900kW/1125kVA diesel generator set is a heavy-duty industrial power generation equipment upgraded based on Weichai mature 12M33 series engine platform. As a high-power genset widely used in large industrial and engineering fields, this 1125kVA Weichai diesel generator set features sufficient power reserve, stable continuous operation, low comprehensive failure rate and strong environmental adaptability, solving the power supply instability problem of traditional medium-power generator sets under long-term heavy load.
In terms of power performance, the unit is equipped with a professional V-type 12-cylinder turbocharged intercooled power generation engine. The optimized cylinder structure and air intake system greatly improve combustion efficiency and power output stability. The 900kW continuous prime power supports 24-hour uninterrupted full-load operation, while the 1000kW/1250kVA standby power provides sufficient peak power margin for sudden load surge and emergency power shortage. Matching with high-precision brushless self-excited alternator and intelligent AVR voltage regulation device, the unit maintains ultra-low frequency and voltage fluctuation under standard 50Hz working conditions, fully adapting to precision industrial equipment and automated production lines with high power quality requirements.
In terms of energy-saving and economy, the engine adopts electronic high-pressure common rail fuel injection technology, which can precisely control fuel injection volume and injection timing according to real-time load changes. The full-load fuel consumption is stably controlled at 237.6L/H, achieving a perfect balance between strong power output and energy-saving performance. The electronic speed governing system intelligently adjusts operating speed under light load and standby conditions, effectively avoiding invalid fuel waste, and significantly reducing long-term operating fuel costs for enterprises and engineering projects compared with competing products of the same power level.
In terms of safety and durability, the supporting alternator adopts H-grade high-temperature resistant insulating materials, which can resist long-term high-load heat accumulation and extreme ambient temperature changes, with excellent insulation aging resistance and electrical safety performance. The IP23 professional dust-proof and splash-proof protection grade effectively isolates external dust, rainwater and solid impurities, protecting internal circuits and mechanical structures from damage. The closed-loop forced water cooling system ensures uniform and efficient heat dissipation of the 12-cylinder high-power engine, completely avoiding overheating shutdown faults during long-hour continuous operation and extending the overall service life of the unit.
In terms of operation and maintenance, the brushless self-excited structure eliminates traditional carbon brush wear, spark failure and frequent replacement work, greatly reducing equipment failure points and daily maintenance workload. The 24V DC electric start system realizes one-key quick start and automatic grid switching, supporting long-term unattended standby operation. The whole machine has a compact and reasonable layout, stable mechanical structure, convenient on-site installation and commissioning, and can adapt to long-term stable operation in various complex industrial and outdoor environments.
3. Application Scenarios
This 50Hz 900kW/1125kVA Weichai diesel generator set has ultra-wide industrial applicability, covering heavy industrial production, large-scale infrastructure engineering, public facility emergency power supply, special industry power guarantee and off-grid area power supply. It can flexibly switch between main power supply and emergency standby power supply modes, and is suitable for all high-power scenarios requiring uninterrupted and stable power supply.
Heavy Industrial Production Scenarios: It is widely used in large manufacturing factories, chemical industrial parks, metallurgical enterprises, mining bases and industrial agglomeration zones. Heavy industrial production is characterized by large power load and long continuous power consumption. This 1125kVA Weichai generator set can be used as the main power supply for off-grid industrial zones or backup power supply for grid-connected factories, effectively avoiding production line shutdown, equipment paralysis and economic losses caused by sudden grid power failure, and ensuring stable and continuous industrial production throughout the year.
Large-scale Engineering Construction Scenarios: It is the core power supply equipment for municipal key projects, road and bridge construction, railway engineering, water conservancy facilities and field exploration operations. Most outdoor construction sites lack stable municipal grid support, and the 900kW high stable power output can simultaneously drive multiple large construction machinery, mixing equipment, hoisting equipment and on-site living supporting facilities. With excellent dust resistance, splash resistance and high-temperature resistance, the unit can operate stably in harsh outdoor construction environments such as high temperature, dust and complex terrain.
Public & Commercial Facility Scenarios: It is applicable to large comprehensive commercial buildings, super shopping malls, star hotels, tertiary hospitals, urban data centers and large campus facilities. These public service scenarios involve intensive personnel and key electromechanical equipment such as fire protection systems, ventilation systems, medical life-saving equipment and elevator systems. In case of grid power failure, the Weichai 12M33D1108E200 generator set can start quickly and switch power supply automatically, ensuring the normal operation of key facilities, avoiding public safety risks and property losses, and meeting the high-standard emergency power supply requirements of large public buildings.
Special Industry & Off-grid Area Scenarios: The unit is suitable for communication base station clusters, island operation bases, remote mountainous areas, pastoral areas and field engineering projects without municipal grid coverage. For special industries such as communication operation and data storage that require 24-hour uninterrupted power supply, the low failure rate and long continuous operation cycle of the unit can effectively prevent communication interruption and data loss caused by power failure. For remote off-grid areas, it serves as a stable long-term main power supply to solve the problem of insufficient power supply for local production and living.
4. Core Purpose
The core purpose of the Weichai 12M33D1108E200 900kW/1125kVA diesel generator set is to provide stable, efficient and low-failure uninterrupted power guarantee for large high-power power consumption scenarios, make up for the insufficient load capacity of medium-power generator sets, and provide reliable and cost-effective power supply solutions for industrial production, engineering construction and public facility operation.
In off-grid industrial parks, field construction sites and remote areas without municipal grid coverage, this 1125kVA diesel generator set acts as a long-term continuous main power supply equipment. Relying on 900kW stable prime power output and strong overload resistance, it meets the all-weather power demand of large-scale industrial production, engineering operation and regional living facilities, and provides an independent and stable power source for long-term off-grid operation of projects.
In urban grid-connected industrial and commercial parks and public infrastructure, the unit is positioned as a high-grade emergency standby power supply. When the municipal grid fails, trips, overloads or has voltage fluctuation, the generator set can realize automatic start and fast power switching in a short time, instantly supplement power supply, ensure the uninterrupted operation of core production equipment and key public service facilities, effectively reduce enterprise operation risks and public safety hidden dangers caused by sudden power failure, and improve the overall operation anti-risk capability of projects.
Meanwhile, relying on Weichai’s mature 12M33 series V12 cylinder engine technology and optimized brushless alternator matching design, the unit achieves dual advantages of stable operation and low maintenance cost. It can support long-term unattended standby and continuous operation, reduce manual operation and maintenance investment, and is one of the most practical and cost-effective high-power diesel generator sets in the current industrial power generation equipment market.
5. FAQ – Common Frequently Asked Questions
Q1: What is the actual usage difference between prime power and standby power of the 900kW/1125kVA Weichai generator set?
Prime power (900kW/1125kVA) is the continuous rated power of the generator set, supporting 24-hour long-term stable operation under rated load, which is the standard power for daily main power supply scenarios. Standby power (1000kW/1250kVA) is short-term emergency peak power, only used for temporary power supplement during grid power failure or sudden load surge. It cannot operate under standby load for a long time, otherwise it will cause engine overload wear and shorten the service life of the unit. In actual project matching, it is recommended to control the operating load within 80% of prime power to ensure long-term stable and efficient operation.
Q2: What core advantages does Weichai 12M33D1108E200 engine have over traditional high-power generator engines?
The 12M33D1108E200 is a new-generation high-power power generation engine independently developed by Weichai, complying with China Non-Road Stage III emission standards. Adopting V-type 12-cylinder four-stroke structure and electronic high-pressure common rail fuel injection technology, it has more sufficient power reserve, higher combustion efficiency and stronger load impact resistance than traditional inline engines of the same power. Matched with H-grade high-temperature resistant brushless alternator and IP23 dust-proof and splash-proof structure, the whole set has better environmental adaptability and operational stability. In addition, the brushless excitation design eliminates vulnerable carbon brush parts, greatly reducing later maintenance frequency and comprehensive use cost.
Q3: What working environments is this 1125kVA diesel generator set suitable for, and what are the key daily maintenance points?
This Weichai 900kW industrial generator set is suitable for indoor factory workshops, outdoor construction sites, mining areas, chemical parks, public buildings and other complex industrial environments, adapting to conventional temperature changes and dusty, splash-proof working conditions. For daily maintenance, users only need to regularly check diesel quantity, engine oil level and cooling water capacity before startup, clean radiator and air filter dust regularly to avoid heat dissipation failure, and replace filter elements and lubricating oil according to unit operating hours. Thanks to the brushless structure and mature engine design, the unit has low failure rate and simple daily maintenance, which is very suitable for long-term unattended industrial operation.

