50Hz SDEC Engine 4HTAA4.3-G22 100kW 125kVA Diesel Generator Set

50Hz  SDEC  100kW 125kVA Diesel Generator Set

1. Product Overview

The 50Hz 100kW 125kVA SDEC Engine 4HTAA4.3-G22 Diesel Generator Set is a high-performance turbocharged heavy-duty industrial genset from the reliable SDEC H-series G-drive engine lineup. Built with mature Ricardo calibrated technology, this 125kVA diesel generator is engineered for long-hour continuous prime power operation and high-reliability emergency backup power scenarios. It delivers a steady prime power rating of 100kW/125kVA and a robust standby power output of 110kW/138kVA, fully catering to medium and large-scale industrial production, municipal infrastructure, commercial park clusters and harsh field engineering power demands. With a fixed full-load fuel consumption of 28.3L/h at 100% load, this SDEC diesel generator balances powerful heavy-load performance and stable operational economy, serving as a cost-effective high-power power generation solution for various high-demand working conditions.

Powered by authentic SDEC 4HTAA4.3-G22 turbocharged intercooled dedicated generator engine, the unit adopts a 4.3L large-displacement four-cylinder inline four-stroke water-cooled structure with durable dry liner cylinder design. Equipped with precision direct fuel injection system and professional turbocharging intercooling technology, the engine achieves sufficient power reserve, fast load response and zero obvious power attenuation during prolonged full-load operation, outperforming ordinary naturally aspirated generator engines in heavy-load adaptability. Matched with a high-quality industrial brushless self-excited alternator, the genset features premium H-grade insulation and standard IP23 dust and splash protection grade, effectively resisting dust, moisture and temperature changes in complex working environments. Running on standard 50Hz industrial frequency and 400V three-phase four-wire output, this 100kW prime power diesel generator complies with international IEC industrial power standards and non-road national stage II emission regulations, widely used for off-grid independent power generation, municipal grid failure emergency backup and industrial peak load regulation.

Every finished 4HTAA4.3-G22 genset undergoes strict factory full-load aging testing, voltage and frequency stability calibration, insulation performance inspection and fuel consumption verification before delivery. Adopting reinforced base frame structure and optimized cooling and lubrication system, this turbocharged diesel generator features low vibration, low failure rate and long service life, supporting 24-hour unattended continuous heavy-load operation. It is a hot-selling medium-high power genset favored by industrial manufacturers, engineering contractors and infrastructure project operators for stable and reliable power guarantee.

2. Technical Parameter

3. Core Product Features

This 50Hz 100kW 125kVA SDEC 4HTAA4.3-G22 Diesel Generator Set is a high-torque heavy-duty genset optimized for full-load continuous power generation and emergency power backup scenarios. As a mainstream 125kVA industrial diesel generator, it adopts upgraded turbocharged intercooled power system and industrial-grade durable structure, effectively solving common pain points of medium-high power gensets such as insufficient torque reserve, slow load response and unstable operation under long-term heavy load. It integrates high power output, low maintenance cost and strong environmental adaptability, becoming a reliable and cost-effective power generation equipment for industrial production, engineering construction and commercial power guarantee projects.

3.1 Turbocharged 4HTAA4.3-G22 Engine with Sufficient Heavy-Load Reserve

Equipped with original SDEC 4HTAA4.3-G22 turbocharged intercooled G-drive engine, the unit inherits the high-reliability technical advantages of SDEC H-series industrial power equipment, jointly developed and calibrated with Ricardo UK technology. The 4.3L large-displacement four-cylinder inline structure and high-strength dry liner cylinder design greatly enhance structural rigidity and high-temperature anti-fatigue performance. The professional turbocharging and intercooling system optimizes air intake efficiency and fuel combustion adequacy, bringing ultra-high torque reserve to support long-term 100% full-load continuous operation. Compared with ordinary naturally aspirated gensets, it features faster load response speed and stronger instantaneous overload resistance, with no stalling or power attenuation under sudden load surges. Calibrated with 28.3L/h stable full-load fuel consumption, the engine maintains consistent combustion efficiency during long-hour heavy-duty operation, fully adapting to industrial uninterrupted power generation working conditions.

3.2 Brushless Self-Excited Alternator for Long-Term Maintenance-Free Operation

Matched with premium industrial brushless self-excited alternator, this 100kW prime power diesel generator completely abandons the traditional brushed excitation structure, eliminating common failures such as carbon brush wear, electric spark interference and poor contact conduction. It realizes long-term unattended maintenance-free excitation operation, greatly reducing daily inspection workload and after-sales maintenance costs for users. The full pure copper winding adopts high-temperature anti-aging insulation treatment, featuring low resistance, low heat generation and high power generation efficiency. Cooperated with intelligent AVR automatic voltage regulation system, the unit can dynamically adjust voltage and frequency in real time according to load changes, ensuring ultra-stable and clean power quality for heavy-load mechanical equipment and precision electrical devices.

3.3 H-Grade Insulation & IP23 Protection for Complex Harsh Environments

The alternator adopts top-tier H-grade high-temperature resistant insulation materials, which can withstand long-term full-load high-temperature operation and extreme temperature fluctuations without insulation aging, breakdown or equipment burnout. Its high-temperature durability and operational stability are far superior to ordinary F-grade insulation gensets. The standard IP23 professional protection grade can effectively block splashing rainwater, floating dust, solid debris and humid air, protecting internal precision circuits and core components from environmental erosion. Whether operating in dusty heavy industrial workshops, humid field operation bases or open-air construction sites with variable weather conditions, this SDEC diesel generator can maintain 24-hour safe and stable operation with excellent outdoor environmental adaptability.

3.4 Dual Power Rating Design for Diversified Working Condition Matching

The genset adopts scientific dual power output mode to cover diversified application demands. The 100kW rated prime power supports 24-hour uninterrupted continuous power supply, which is the core power for long-term off-grid independent power generation and daily heavy-load industrial production operation. The 110kW/138kVA high standby power provides sufficient emergency peak power reserve, which can quickly start and compensate power within seconds during sudden municipal power failures and instantaneous heavy-load surges. Strictly controlled voltage and frequency fluctuation ensures stable power switching, effectively avoiding production shutdown, equipment damage and economic losses caused by power instability.

3.5 Flexible Deployment & Expandable Intelligent Configuration

The whole machine adopts compact integrated modular layout with reasonable structural arrangement and small footprint, saving installation space and facilitating indoor fixed installation and outdoor mobile deployment. The optimized shock absorption base and integral silencer system effectively reduce operational vibration and running noise, complying with industrial and civil environmental protection noise standards. Users can freely choose open type for factory fixed use, silent type for noise-sensitive commercial and residential areas, or mobile trailer type for frequently transferred engineering projects. Optional ATS automatic switching device, remote monitoring system and parallel operation system realize unattended automatic power supply and multi-unit parallel power generation, greatly improving operational intelligence and scene compatibility.

4. Core Product Uses

As a high-torque turbocharged heavy-duty industrial diesel generator, the 50Hz 100kW 125kVA SDEC 4HTAA4.3-G22 Diesel Generator Set is widely used for long-term heavy-load continuous prime power supply, key project emergency standby power, industrial grid peak load compensation and long-term unattended hot standby power reserve, solving high-power shortage and sudden power outage risks in various industrial, engineering and commercial high-demand scenarios.

Long-Term Off-Grid Heavy-Load Prime Power Supply: This 125kVA diesel generator provides stable continuous power generation for remote large industrial parks, mining operation areas, field construction bases and large agricultural processing plants without complete municipal grid coverage, supporting long-term stable operation of heavy-load mechanical production equipment and automated production lines.

Key Facility Emergency Standby Power Guarantee: The 138kVA high standby power can start instantly after municipal power failure, providing zero-delay uninterrupted emergency power for factory core production lines, large commercial complex fire-fighting systems, municipal key infrastructure and safety monitoring equipment, avoiding major economic losses and safety hazards caused by sudden power interruption.

Industrial Grid Peak Load Compensation: For large and medium-sized manufacturing factories and industrial parks with insufficient grid peak power capacity and unstable terminal voltage, this SDEC diesel generator set supplements power during peak power consumption periods, balances grid load pressure, stabilizes terminal voltage and ensures continuous and efficient industrial production.

Long-Term Unattended Hot Standby Reserve: It is configured as standard hot standby power equipment for large industrial enterprises, public institutions and key commercial projects, maintaining long-term standby state to respond to sudden power failure emergencies at any time.

Large-Scale Engineering Temporary Power Support: It provides stable high-power temporary power guarantee for municipal key engineering construction, water conservancy hub projects, highway and bridge renovation and field geological exploration operations, meeting the high-power consumption demand of large construction machinery and on-site supporting facilities.

5. Wide Application Scenarios

With 4.3L large-displacement high torque reserve, turbocharged heavy-load performance, high-precision stable power output and strong harsh environment resistance, the SDEC 4HTAA4.3-G22 100kW diesel generator set is widely applied in heavy industrial manufacturing, key municipal projects, large commercial complexes and outdoor large-scale engineering fields, becoming a mainstream high-reliability high-power medium-sized power generation solution.

5.1 Heavy Industrial Manufacturing Production

Ideal for large mechanical manufacturing, hardware processing, chemical auxiliary production, food deep processing and automated packaging factories. The stable 100kW heavy-load continuous power output fully meets the long-term operation demand of large-scale automated production equipment. Sufficient turbocharged torque reserve copes with instantaneous peak power consumption during equipment startup and operation, effectively avoiding production suspension and yield loss caused by grid voltage fluctuation and sudden power outages, ensuring continuous and efficient industrial production.

5.2 Large Commercial & Logistics Park Complexes

Suitable for super-large shopping malls, comprehensive office buildings, modern logistics distribution centers and industrial cluster parks. As the core emergency backup power equipment, it ensures the normal operation of elevators, central air conditioning, fire-fighting linkage systems, security monitoring systems and emergency lighting during municipal power outages, maintaining safe and orderly commercial operation and improving overall facility operational stability.

5.3 Municipal Key Projects & Outdoor Engineering

Perfect for urban key municipal renovation, water conservancy hub construction, highway and bridge engineering, field mining and geological exploration operations. With IP23 dust and splash protection performance and optional mobile trailer configuration, the unit adapts to complex open-air harsh environments such as wind, dust and rain splash, supporting frequent equipment transfer and long-term on-site heavy-load power supply for large engineering projects.

5.4 Public Key Infrastructure & Institutions

Widely applied in district central hospitals, suburban university campus clusters, scenic area supporting facilities and government public service centers. Featuring low vibration, low noise and ultra-stable operation, it will not interfere with public working and living environments. The low-maintenance and high-reliability design is very suitable for long-term unattended standby operation of key public infrastructure.

5.5 Communication Base Station & Precision Equipment Power Backup

Applicable for medium and large communication base stations, field environmental monitoring stations, meteorological monitoring equipment and industrial precision instrument rooms. The high-precision stable power output effectively eliminates voltage surge and frequency jitter, protecting precision electronic equipment and ensuring 24-hour uninterrupted and stable operation of communication and monitoring systems.

6. Frequently Asked Questions (FAQ)

Q1: What is the practical difference between prime power and standby power of the 4HTAA4.3-G22 125kVA diesel generator set?

Prime power (100kW/125kVA) refers to the rated continuous power that the genset can stably output for 24-hour long-term uninterrupted operation, serving as the standard working power for daily off-grid independent power generation and long-term heavy-load industrial operation. Standby power (110kW/138kVA) is emergency peak power, only designed for short-time power compensation during sudden municipal power failures or instantaneous heavy-load surges, and cannot support long-term full-load continuous operation. For actual on-site use, professional engineers recommend controlling the operating load within 80% of the prime power to avoid long-term overload operation, which can effectively prolong the overall service life and maintain stable heavy-load performance of the SDEC 4HTAA4.3-G22 generator set.

Q2: What advantages does the SDEC 4HTAA4.3-G22 turbocharged engine have over ordinary generator engines?

The SDEC 4HTAA4.3-G22 is an upgraded turbocharged intercooled H-series G-drive engine professionally calibrated for heavy-load long-hour power generation. Different from ordinary naturally aspirated and low-power mechanical engines, it adopts a 4.3L large-displacement dry liner structure and precision direct injection combustion technology optimized by Ricardo technology. The turbocharged intercooling system greatly improves power density, torque reserve and load response speed, with zero obvious power attenuation under long-term full-load operation. It features stable fuel consumption performance, low operational vibration and ultra-low failure rate, making it far more suitable for heavy industrial continuous power supply and complex outdoor harsh environment operation than ordinary civilian generator engines.

Q3: What routine maintenance does the 50Hz 100kW 125kVA SDEC diesel generator need?

This genset adopts mature brushless self-excited alternator and SDEC H-series turbocharged industrial engine structure, with simple daily maintenance procedures and low operational costs. Daily routine inspection only needs to check diesel fuel level, cooling water capacity and 24V starting battery status to ensure normal hot standby state. Users need to regularly clean radiator dust and ventilation gaps to prevent engine and turbocharger overheating under long-term heavy load. Replace engine oil, fuel filters and oil filters regularly according to cumulative operating hours. Compared with traditional brushed generators, it requires no regular carbon brush replacement and complex mechanical debugging, greatly saving daily operation and maintenance workload and costs.