50Hz SDEC Engine 4HT4.3-G23 68kW 85kVA Diesel Generator Set

50Hz  SDEC  68kW 85kVA Diesel Generator Set

1. Product Overview

The 50Hz 68kW 85kVA SDEC Engine 4HT4.3-G23 Diesel Generator Set is a reliable medium-to-high power industrial genset built on SDEC mature H-series G-drive engine platform. Designed for steady continuous power supply and critical emergency backup power applications, this 85kVA diesel generator delivers a rated prime power of 68kW and a maximum standby power of 72kW/90kVA, catering to medium and heavy-load power demands for industrial manufacturing, municipal construction, commercial facilities and outdoor field operations. With a verified full-load fuel consumption of 19.5L/h, this SDEC diesel generator adopts optimized direct injection combustion technology, balancing stable heavy-duty performance and daily operational economy for long-hour running scenarios.

Powered by genuine SDEC 4HT4.3-G23 industrial engine, the unit features a 4.3L large-displacement four-cylinder inline structure with dry liner cylinder design, jointly developed with Ricardo UK technology for improved durability and thermal stability. Equipped with a high-performance brushless self-excited alternator, the genset adopts premium H-grade insulation and standard IP23 dust and splash protection grade, delivering excellent adaptability in dusty, humid and open-air working environments. Running on standard 50Hz industrial frequency and 400V three-phase four-wire output, this 68kW prime power diesel generator fully complies with global industrial power standards and non-road emission requirements, making it a trusted solution for off-grid independent power generation, grid failure emergency power backup and industrial peak load regulation.

Every completed 4HT4.3-G23 generator set undergoes strict factory full-load aging testing, voltage and frequency calibration, insulation resistance inspection and fuel consumption verification before delivery. Featuring reinforced mechanical structure, low operational vibration and ultra-low failure rate, this industrial diesel genset supports long-term unattended operation and has become a mainstream medium-high power model widely adopted by engineering contractors, factory operators and infrastructure project owners worldwide.

2. Technical Parameter

3. Core Product Features

This 50Hz 68kW 85kVA SDEC 4HT4.3-G23 Diesel Generator Set inherits the mature industrial-grade design of SDEC H-series gensets, focusing on stable heavy-load operation, strong environmental adaptability and low maintenance costs. As a high-cost-performance 85kVA diesel generator, it solves common pain points of medium-power gensets such as insufficient power reserve, poor high-temperature stability and frequent failures under continuous operation, making it ideal for both daily continuous power generation and emergency backup power scenarios.

3.1 4HT4.3-G23 Heavy-Duty Engine with Sufficient Power Reserve

Equipped with the authentic SDEC 4HT4.3-G23 G-drive dedicated engine, this genset adopts a 4.3L large-displacement dry liner structure optimized for long-hour industrial power generation. Developed with Ricardo professional calibration technology, the direct injection combustion system delivers stable power output even under 100% full-load operation. With a full-load fuel consumption of 19.5L/h, the unit maintains balanced power performance and operational economy. The four-cylinder inline layout and reasonable firing sequence effectively reduce operational vibration and power attenuation, ensuring no power drop during long-term medium and heavy-load working cycles, which is far more durable than ordinary civilian generator engines.

3.2 Brushless Self-Excited Alternator for Maintenance-Free Operation

Matching a high-quality industrial brushless self-excited alternator, this 68kW prime power diesel generator completely avoids the defects of traditional brushed excitation structures, including carbon brush wear, electric spark interference and poor contact failure. It realizes long-term maintenance-free excitation operation, greatly reducing daily inspection and maintenance workload for end users. The full pure copper winding features low resistance and low heat generation, ensuring high power generation efficiency and stable current transmission. Supported by intelligent AVR automatic voltage regulation technology, the unit dynamically adjusts voltage in real time according to load changes, ensuring ultra-stable power quality for precision electrical equipment.

3.3 H-Grade Insulation & IP23 Protection for Complex Working Conditions

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 or breakdown damage. Compared with F-grade insulation gensets, it has stronger thermal stability and longer service life. The standard IP23 protection grade effectively resists splashing rainwater, floating dust and solid debris, protecting internal circuits and core components from environmental erosion. Whether operating in dusty industrial workshops, humid field bases or open-air construction sites, this SDEC diesel generator maintains safe and stable 24-hour continuous operation with outstanding outdoor adaptability.

3.4 Dual Power Mode for Diversified Working Scenarios

The genset supports dual power rating design to meet different operational demands. The 68kW prime power is designed for 24-hour uninterrupted continuous power supply, suitable for long-term off-grid independent power generation and daily industrial load operation. The 72kW/90kVA standby power provides reliable short-term peak power compensation, which can quickly respond to sudden municipal power outages and instantaneous load surges. The high-precision power output effectively avoids equipment damage and production losses caused by voltage jitter and frequency instability.

3.5 Flexible Configuration & High Compatibility

The whole machine adopts compact integrated modular layout with a reasonable structural design, saving installation space and facilitating fixed indoor installation and outdoor mobile deployment. Users can choose open type for factory fixed use, silent type for noise-sensitive residential and commercial areas, or mobile trailer type for frequently transferred engineering projects. Optional ATS automatic switch and remote monitoring functions realize unattended automatic power supply, greatly improving operational intelligence and convenience.

4. Core Product Uses

As a high-reliability medium-high power industrial diesel generator, the 50Hz 68kW 85kVA SDEC 4HT4.3-G23 Diesel Generator Set is widely used for continuous prime power supply, emergency standby power guarantee, grid peak load compensation and long-term hot standby power reserve, covering multiple medium and heavy-load power demand fields.

Long-Term Off-Grid Continuous Power Supply: This 85kVA diesel generator provides stable independent power generation for remote industrial parks, field operation stations, rural processing bases and mining auxiliary areas without complete municipal grid coverage, supporting long-term operation of medium and heavy-load mechanical equipment.

Critical Emergency Standby Power: The 90kVA high standby power can start instantly after municipal power failure, providing uninterrupted power guarantee for factory core production lines, commercial complex fire-fighting systems, public infrastructure and safety monitoring equipment, avoiding economic losses caused by sudden power interruption.

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

Long-Term Hot Standby Reserve Power: It serves as fixed hot standby power equipment for industrial enterprises, public institutions and commercial facilities, maintaining long-term standby state to respond to unexpected power outages at any time.

Temporary Power for Outdoor Engineering: It provides stable medium-high power temporary power support for municipal engineering renovation, water conservancy construction, road infrastructure projects and field exploration operations, meeting the power demand of large construction equipment and on-site supporting facilities.

5. Wide Application Scenarios

With large-displacement power reserve, stable heavy-load operation performance and strong harsh environment adaptability, the SDEC 4HT4.3-G23 68kW diesel generator set has become a mainstream power solution for industrial production, commercial operation, municipal engineering and public infrastructure fields.

5.1 Medium and Heavy Industrial Production

Suitable for mechanical processing, hardware manufacturing, food processing and packaging industrial workshops. The stable 68kW continuous power output fully meets the long-term operation demand of medium and large production equipment. Sufficient power reserve copes with instantaneous peak load during equipment startup and operation, effectively avoiding production shutdown caused by grid voltage fluctuation and sudden power outages, ensuring continuous and stable industrial production.

5.2 Large Commercial & Logistics Facilities

Widely applied in large shopping malls, office buildings, logistics distribution centers and industrial parks. As core emergency backup power equipment, it ensures the normal operation of elevators, central air conditioning, fire-fighting linkage systems, security monitoring and emergency lighting during power outages, maintaining safe and orderly operation of commercial facilities.

5.3 Municipal & Outdoor Engineering Projects

Ideal for urban municipal renovation, water conservancy engineering, highway construction and field engineering operations. With IP23 dust and splash protection capability and optional mobile trailer configuration, the unit adapts to complex open-air harsh environments, supporting frequent equipment transfer and long-term on-site power supply for various engineering projects.

5.4 Public Infrastructure & Key Institutions

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

5.5 Communication & Precision Equipment Power Guarantee

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

6. Frequently Asked Questions (FAQ)

Q1: What is the difference between prime power and standby power of the 4HT4.3-G23 85kVA diesel generator set?

Prime power (68kW/85kVA) refers to the rated continuous power that the genset can stably output for 24-hour long-term uninterrupted operation, which is the standard working power for daily off-grid power generation and long-term industrial load operation. Standby power (72kW/90kVA) is emergency peak power, only used for short-time power compensation during sudden municipal power failures or instantaneous heavy-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 service life and maintain stable heavy-load performance of the SDEC 4HT4.3-G23 generator set.

Q2: What are the unique advantages of the SDEC 4HT4.3-G23 H-series engine?

The SDEC 4HT4.3-G23 is a professional H-series G-drive engine specially calibrated for medium-high power long-hour power generation scenarios. Different from ordinary general-purpose engines, it adopts a 4.3L large-displacement dry liner structure and Ricardo optimized direct injection combustion technology, featuring stronger power reserve, better high-temperature resistance and lower operational failure rate. The mechanical governor ensures stable speed regulation under fluctuating loads, and the integrated structural design reduces vibration and power attenuation during long-hour operation. It is more suitable for industrial continuous power supply and harsh outdoor working conditions than ordinary civilian generator engines.

Q3: What routine maintenance does the 50Hz 68kW 85kVA SDEC diesel generator need?

Benefiting from the mature brushless alternator structure and SDEC H-series industrial engine design, this genset has low daily maintenance pressure. Daily routine inspection only requires checking diesel fuel level, cooling water volume and 24V starting battery condition to ensure normal standby status. Users need to regularly clean radiator dust and ventilation gaps to prevent high-temperature overheating under 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, saving a lot of daily operation and maintenance costs.