50Hz SDEC Engine 4ZTAA4.1-G21 50.4kW 63kVA Diesel Generator Set

50Hz  SDEC 50.4kW 63kVA Diesel Generator Set

1. Product Overview

The 50Hz 50.4kW 63kVA SDEC Engine 4ZTAA4.1-G21 Diesel Generator Set is a turbocharged industrial-grade medium-power genset upgraded from SDEC classic Z-series G-drive engines. Delivering a reliable prime power of 50.4kW (63kVA) and a maximum standby emergency power of 56kW (70kVA), this 63kVA diesel generator is perfectly tailored for medium and heavy-load power supply scenarios that require stable continuous operation and reliable power backup. With a calibrated full-load fuel consumption of 13.5L/h, the unit balances excellent power performance and operational economy, making it a mainstream cost-effective solution in the medium-power generator market.

Powered by the authentic SDEC 4ZTAA4.1-G21 turbocharged and intercooled dedicated generator engine, this SDEC diesel generator adopts 4.1L large-displacement wet liner cylinder structure and precision direct injection combustion technology. Compared with naturally aspirated gensets of the same power level, it features stronger power reserve, better load response and more stable long-hour operation performance. Equipped with a high-quality brushless self-excited alternator, the unit applies H-grade high-temperature resistant insulation and standard IP23 dust and splash protection grade, fully adapting to complex industrial and outdoor harsh working environments. Running at standard 50Hz industrial frequency and 400V three-phase four-wire output, this 50.4kW prime power diesel generator complies with international IEC standards and domestic industrial power utilization specifications, widely used for off-grid independent power generation, municipal grid failure emergency backup and industrial peak load compensation.

Every finished 4ZTAA4.1-G21 generator set undergoes strict factory full-load aging testing, voltage and frequency calibration, insulation performance detection and fuel consumption verification before delivery. Adopting mature SDEC Z-series industrial technology and standardized assembly process, the whole machine features low failure rate, strong durability and low daily maintenance cost, which has been widely recognized by engineering contractors, industrial manufacturers and property management enterprises for medium-power power guarantee projects.

2.Technical Parameter

3. Core Product Features

This 50Hz 50.4kW 63kVA SDEC 4ZTAA4.1-G21 Diesel Generator Set adopts upgraded turbocharged intercooled technology of SDEC Z-series industrial engines, breaking the power limitation of traditional naturally aspirated gensets. It features stronger power reserve, faster load response and more stable continuous operation performance, perfectly adapting to medium and heavy-load long-hour power generation and complex harsh environment working conditions. As a high-performance 63kVA diesel generator, it solves common problems of ordinary gensets such as insufficient peak power, slow load picking and high failure rate, with outstanding practicability and cost performance.

3.1 Turbocharged Intercooled Engine with Strong Power Reserve

Powered by the exclusive SDEC 4ZTAA4.1-G21 turbocharged and intercooled G-drive engine, the unit is equipped with a 4.1L large-displacement four-cylinder in-line structure and wet liner cylinder design. The turbocharging technology effectively increases air intake efficiency, greatly improving power density and load response speed compared with naturally aspirated gensets. It can quickly adapt to instantaneous load surges without power attenuation, maintaining stable power output under long-term medium and heavy-load operation. The precision direct injection combustion system optimizes fuel matching, with a full-load fuel consumption of 13.5L/h, realizing high-efficiency power output and controllable operational cost. The professional G-drive calibration ensures the engine always runs in the optimal power generation state, with strong anti-fatigue performance.

3.2 Brushless Self-Excited Alternator for Maintenance-Free Stable Operation

Matching a high-grade industrial brushless self-excited alternator, this 50.4kW prime power diesel generator completely avoids the inherent defects of traditional brushed excitation structures such as carbon brush wear, electric spark interference and poor contact failure. It achieves long-term maintenance-free excitation operation, effectively reducing daily maintenance workload and after-sales failure rate. The full pure copper winding adopts high-temperature anti-aging insulation treatment, featuring low resistance, low heat generation and high power generation efficiency. The built-in AVR automatic voltage regulation system intelligently adjusts voltage in real time, ensuring ultra-stable voltage and frequency output even with fluctuating loads, providing clean and high-quality power for various electrical equipment.

3.3 H-Grade Insulation & IP23 Protection for Harsh Environment Adaptability

The alternator adopts top-level H-grade high-temperature resistant insulation materials, which can withstand long-term full-load high-temperature operation and severe temperature changes without insulation aging, breakdown or equipment burnout. Compared with B-grade and F-grade insulation gensets, it has longer service life and higher operational safety. The standard IP23 professional protection grade can effectively block splashing rainwater, floating dust, debris and moist air, protecting internal circuits and precision components from environmental erosion. Whether in dusty industrial workshops, humid field working areas or open-air construction sites with variable weather, this SDEC diesel generator can maintain stable 24-hour continuous operation with excellent environmental adaptability.

3.4 Dual Power Mode to Meet Diversified Working Condition Demands

The genset supports dual power output modes to cover different application scenarios. The 50.4kW rated prime power supports 24-hour uninterrupted continuous power supply for conventional medium and heavy-load production and living equipment, suitable for long-term off-grid independent power generation. The 56kW/70kVA standby power can quickly respond to sudden municipal power failures and instantaneous peak load surges, providing reliable emergency power compensation. The high-precision power output effectively avoids equipment damage and production losses caused by power jitter, voltage drop or frequency instability.

3.5 Flexible Structural Design & Wide Scene Compatibility

The whole machine adopts compact integrated modular layout, with reasonable structural arrangement and small footprint, convenient for indoor fixed installation and outdoor mobile deployment. The optimized shock absorption base and integral silencer system effectively reduce operating vibration and running noise, complying with industrial and civil environmental protection noise standards. Users can freely choose open type for fixed workshop use, silent type for noise-sensitive commercial and residential areas, or mobile trailer type for frequent transfer engineering projects, with extremely high deployment flexibility and scene adaptability.

4. Core Product Uses

As a high-performance turbocharged medium-power industrial diesel generation equipment, the 50Hz 50.4kW 63kVA SDEC 4ZTAA4.1-G21 Diesel Generator Set is mainly used for long-term continuous prime power supply, municipal power failure emergency standby power, grid peak load compensation and fixed hot standby power reserve, solving power shortage and sudden power outage risks in various industrial, commercial and engineering medium and heavy-load scenarios.

Long-Term Off-Grid Continuous Prime Power Supply: This 63kVA diesel generator provides stable independent power generation for remote industrial zones, field operation stations, rural processing bases, mining auxiliary areas and suburban facilities without complete municipal grid coverage, ensuring normal operation of medium and heavy-load mechanical equipment and daily electrical systems.

Emergency Standby Power for Sudden Grid Failure: The 70kVA high standby power can start up quickly in case of municipal power outage, providing uninterrupted emergency power guarantee for factory production lines, fire-fighting linkage systems, building monitoring equipment, emergency lighting and safety protection systems, avoiding production shutdown and economic losses caused by power interruption.

Grid Peak Load Compensation: For medium-sized factories and industrial parks with insufficient grid peak power capacity and unstable voltage, this SDEC diesel generator set can supplement power during peak power consumption periods, balance grid load pressure and improve regional power supply stability.

Long-Term Hot Standby Power Reserve: It is configured as fixed standby power equipment for industrial workshops, public institutions and commercial complexes, maintaining long-term hot standby state to respond to unexpected power failures at any time.

Temporary Power Supply for Outdoor Engineering Projects: It provides stable medium-load temporary power support for municipal infrastructure renovation, water conservancy engineering, road construction, field exploration and environmental monitoring projects, meeting the power consumption needs of medium-sized construction equipment and on-site living facilities.

5. Wide Application Scenarios

With turbocharged power performance, large-displacement power reserve, stable medium and heavy-load operation and strong harsh environment adaptability, the SDEC 4ZTAA4.1-G21 50.4kW diesel generator set covers industrial production, commercial operation, public infrastructure and outdoor engineering fields, becoming a reliable turbocharged medium-power power generation solution for complex working conditions.

5.1 Medium-Sized Industrial Workshop Production

Ideal for mechanical processing workshops, hardware manufacturing factories, packaging production lines and rural industrial parks. The stable 50.4kW continuous power output fully meets daily medium and heavy-load production demands, and turbocharged power reserve can cope with instantaneous load changes during equipment startup and operation. It effectively avoids production interruption caused by grid voltage instability and sudden power outages, ensuring continuous and stable industrial production operation.

5.2 Commercial Building & Logistics Park Backup Power

Suitable for medium-sized office buildings, comprehensive commercial centers, logistics distribution parks and community service complexes. It serves as core emergency backup power to ensure the normal operation of elevators, central air conditioning, monitoring systems, fire safety equipment and public emergency lighting during power outages, improving commercial operation safety and user experience.

5.3 Municipal & Outdoor Engineering Construction

Perfect for urban municipal renovation, rural infrastructure construction, water conservancy project maintenance, road engineering and field engineering operations. With IP23 outdoor protection performance and optional mobile trailer configuration, the unit adapts to complex open-air harsh environments such as wind, dust and splashing rain, supporting frequent equipment transfer and long-term on-site power supply for temporary engineering projects.

5.4 Public Institution & Infrastructure Power Guarantee

Widely applied in township hospitals, suburban campus clusters, scenic area supporting facilities and public service stations. The low-noise and stable operation will not interfere with public working and living environments, and the low-maintenance design is very suitable for long-term unattended standby operation of public infrastructure.

5.5 Monitoring & Communication Equipment Backup Power

Applicable for medium-sized communication base stations, field environmental monitoring stations, meteorological monitoring equipment and industrial auxiliary power equipment. High-precision stable power output avoids voltage surge and frequency jitter, effectively protecting precision electronic devices and ensuring 24-hour uninterrupted operation of monitoring and communication systems.

6. Frequently Asked Questions (FAQ)

Q1: What is the practical usage difference between prime power and standby power of the 4ZTAA4.1-G21 63kVA diesel generator set?

Prime power (50.4kW/63kVA) refers to the rated continuous power that the genset can stably output for 24-hour long-term uninterrupted operation, designed for daily continuous off-grid power generation and regular medium and heavy-load production and living power consumption. Standby power (56kW/70kVA) is emergency peak power, only used for short-time power compensation during sudden municipal power outages or instantaneous load surges, and cannot support long-term full-load continuous operation. In actual on-site use, it is recommended to control the operating load within 80% of the prime power to avoid long-term overload operation, which can effectively extend the overall service life and maintain stable performance of the SDEC 4ZTAA4.1-G21 generator set.

Q2: What are the core advantages of the turbocharged 4ZTAA4.1-G21 engine compared with ordinary naturally aspirated generator engines?

The SDEC 4ZTAA4.1-G21 is an upgraded turbocharged and intercooled Z-series G-drive engine professionally calibrated for medium-power heavy-load power generation. Different from ordinary naturally aspirated engines, it adopts turbocharging and intercooling technology to greatly improve air intake efficiency and combustion efficiency, with stronger power reserve and faster load response speed. Equipped with 4.1L large displacement and wet liner structure, it has better high-temperature resistance and longer continuous operation life, no power attenuation under long-term heavy-load operation. With stable fuel consumption performance and low failure rate, it is more suitable for industrial continuous power supply and outdoor harsh environment operation than ordinary civilian naturally aspirated gensets.

Q3: What routine maintenance does the 50Hz 50.4kW 63kVA SDEC diesel generator require?

Benefiting from the mature brushless self-excited alternator design and SDEC turbocharged industrial engine structure, this genset has low daily maintenance pressure. Daily routine inspection only needs to check diesel fuel level, cooling water capacity and 24V battery starting status to ensure normal standby condition. Users need to regularly clean radiator dust and ventilation gaps to guarantee unobstructed heat dissipation and prevent turbocharger overheating. Replace engine oil, fuel filter and oil filter regularly according to cumulative operating hours. There is no need for regular carbon brush replacement and complex mechanical debugging as traditional brushed generators, greatly saving daily operation and maintenance time and economic costs.