50Hz 22kW 27.5kVA SDEC Engine 4Z3.0-G11 Diesel Generator Set

50Hz 22kW 27.5kVA SDEC Engine 4Z3.0-G11 Diesel Generator Set

1. Product Overview

The 50Hz 22kW 27.5kVA SDEC Engine 4Z3.0-G11 Diesel Generator Set is a compact, reliable low-power generating unit widely utilized for standby and prime power supply in commercial, residential and small industrial scenarios. Powered by authentic SDEC 4Z3.0-G11 diesel engine, this 27.5kVA diesel generator set delivers stable prime power of 22kW and standby emergency power of 24kW/30kVA, perfectly matching daily stable power consumption and sudden power outage backup demands of small-load facilities. As a high-efficiency SDEC diesel generator with 50Hz fixed frequency design, it adopts mature four-stroke water-cooled engine technology and brushless self-excited alternator structure, featuring low fuel consumption, low noise and easy daily maintenance.

This 22kW prime power diesel generator set complies with international industrial power generation standards, equipped with H-grade insulation system and IP23 protection grade, ensuring excellent environmental adaptability and operational safety in outdoor and semi-outdoor working environments. Different from traditional small generator units with unstable voltage output and high fuel waste, the 4Z3.0-G11 SDEC generator set optimizes fuel combustion structure and power generation efficiency, with only 6.8L/h fuel consumption under 100% full load condition. It is one of the most cost-effective low-power diesel generator units in the global small standby power equipment market, favored by engineering contractors, property management companies and small enterprise users.

All finished SDEC 4Z3.0-G11 diesel generator sets undergo strict factory testing including full-load operation test, voltage stability detection, fuel consumption calibration and insulation performance inspection. With standardized modular design, durable mechanical structure and stable power output performance, this 50Hz low-power diesel generator has become a hot-selling standby power solution for daily power guarantee and emergency power backup of small buildings, construction sites and public facilities.

2. Technical Parameter

3. Core Product Features

This 50Hz 22kW 27.5kVA SDEC 4Z3.0-G11 diesel generator set integrates SDEC’s mature low-power engine manufacturing technology and high-performance brushless alternator design. It solves the problems of high fuel consumption, unstable voltage and short service life of ordinary small generator sets, and maintains excellent stability and economy in long-term standby and intermittent prime power operation scenarios:

3.1 Low Fuel Consumption & High Operating Economy

Equipped with SDEC 4Z3.0-G11 professional generator-dedicated diesel engine, the unit adopts precision direct injection combustion technology, which fully optimizes fuel atomization and combustion efficiency. Under 100% full-load working condition, the fuel consumption is only 6.8L per hour, far lower than most peer 25-30kVA diesel generator sets. Whether for long-term light-load standby or short-term full-load power supply, this energy-saving SDEC diesel generator can effectively reduce daily fuel cost and long-term operational expenditure, bringing significant economic benefits for users.

3.2 Stable Power Output & High Power Quality

Matched with brushless self-excited alternator and built-in AVR automatic voltage regulation system, the 27.5kVA diesel generator set realizes ultra-stable voltage and frequency output. The voltage fluctuation rate is controlled within ±1%, and the frequency stability rate is less than ±0.5%, which can effectively avoid current jitter and voltage surge. It can stably supply power to precision electrical equipment, household appliances and small mechanical devices without causing equipment damage due to unstable power quality, fully meeting daily civilian and small industrial power supply standards.

3.3 High-grade Insulation & Excellent Safety Performance

The alternator adopts H-grade high-temperature resistant insulation material, which has strong anti-aging and high-temperature resistance capabilities, and can operate stably for a long time in high-temperature working environments. With IP23 professional protection grade, the unit effectively prevents external dust, rainwater and sundries from entering the interior, avoiding short circuit and insulation failure caused by environmental interference. The whole machine is equipped with multiple protection functions including overvoltage, overload, overheating and short circuit, which can automatically alarm and shut down in case of faults, ensuring safe and reliable operation of the generator set.

3.4 Compact Structure & Easy Installation & Maintenance

Designed with integrated modular structure, this 22kW prime power diesel generator set has small overall volume and light weight, saving installation space. The SDEC 4Z3.0-G11 engine has a simple and mature mechanical structure with few vulnerable parts. The brushless alternator design eliminates carbon brush wear and replacement troubles of traditional brushed generators, greatly reducing daily maintenance workload. Users only need to conduct regular oil check and dust cleaning, realizing low-maintenance long-term operation.

3.5 Low Noise & Strong Environmental Adaptability

Optimized engine vibration reduction structure and silencer system effectively reduce operating noise, meeting civil and commercial environmental noise standards. The 4-stroke water-cooled engine design ensures uniform heat dissipation and strong continuous operation capability. It can adapt to various complex working environments such as outdoor open-air, temporary construction sites and indoor equipment rooms, with wide environmental adaptability and strong weather resistance.

3.6 Dual Power Mode & Wide Applicability

The unit supports dual power output of prime power and standby power. The 22kW rated prime power meets daily continuous stable power supply demands, while the 24kW emergency standby power can cope with instantaneous peak load and sudden power outage emergencies. The standard 50Hz frequency and 400V three-phase voltage design is compatible with most global civil and commercial power supply systems, with strong universal applicability.

4. Core Product Uses

As a high-efficiency low-power emergency and prime power generation equipment, the 50Hz 22kW 27.5kVA SDEC Engine 4Z3.0-G11 Diesel Generator Set mainly undertakes stable power supply, emergency power backup and power failure guarantee functions, solving power shortage and power outage problems in small-load scenarios:

Daily Continuous Prime Power Supply: Relying on stable 22kW prime power output and low fuel consumption performance, this SDEC diesel generator set provides long-term continuous power supply for small facilities without stable municipal power supply, ensuring normal operation of daily electrical equipment and small mechanical devices.

Sudden Power Outage Emergency Backup Power: The 24kW/30kVA standby power can quickly start up in case of municipal power failure, providing uninterrupted emergency power guarantee for key equipment, avoiding production suspension, data loss and facility shutdown losses caused by power outage.

Peak Load Power Compensation: For small workshops and commercial facilities with unstable municipal power supply and insufficient peak power capacity, the generator set can assist in power compensation during peak power consumption periods, balancing grid load and improving power supply stability.

Field Off-grid Power Generation Guarantee: It provides independent off-grid power generation support for outdoor temporary operation scenarios without grid coverage, meeting the power consumption needs of field construction, monitoring equipment and living facilities.

Long-term Standby Power Reserve: As a fixed standby power equipment for buildings and public facilities, it maintains hot standby state for a long time, ensuring rapid response and power supply in unexpected power failure situations.

5. Wide Application Scenarios

With low fuel consumption, stable operation, low maintenance cost and compact size, the 50Hz 22kW 27.5kVA SDEC 4Z3.0-G11 Diesel Generator Set is widely used in various small-load civil, commercial, industrial and outdoor engineering scenarios, being a mainstream hot-selling low-power generating unit:

5.1 Residential & Commercial Building Standby Power

Suitable for villa communities, small office buildings, shopping stores and community service centers. It serves as emergency backup power to ensure normal operation of lighting, monitoring, elevator and weak current systems during municipal power outages, improving building power supply safety and stability.

5.2 Small Industrial & Workshop Power Supply

Applicable for small processing workshops, handicraft production rooms and small mechanical processing equipment. It can be used as daily prime power supply for off-grid workshops or emergency backup power for grid-connected workshops, ensuring continuous and stable production operation.

5.3 Outdoor Construction & Temporary Engineering

Ideal for rural infrastructure construction, road maintenance projects, field exploration and temporary construction sites. Its compact structure and convenient mobile installation can meet the off-grid power demand of temporary construction equipment and on-site living facilities.

5.4 Public Facility & Institutional Power Guarantee

Widely used for standby power supply of township clinics, rural schools, street lighting systems and scenic area supporting facilities. Low noise and stable operation will not affect public working and living environments, meeting long-term unattended standby power demand.

5.5 Communication & Monitoring Equipment Backup

Suitable for small communication base stations, field monitoring stations and environmental detection equipment. High-precision stable power output can protect precision electronic equipment from damage caused by power fluctuation, 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 this 27.5kVA SDEC diesel generator set?

Prime power (22kW/27.5kVA) refers to the rated continuous power that the generator set can output for a long time, supporting 24-hour uninterrupted stable operation and occasional short-term overload within the standard range, which is suitable for daily continuous power supply scenarios. Standby power (24kW/30kVA) is the emergency peak power, only used for short-time power compensation in power outage or peak load emergencies, and cannot operate continuously for a long time. Users need to select the working mode according to actual continuous load and emergency backup demand to avoid long-term overload operation affecting the unit service life.

Q2: Why is this SDEC 4Z3.0-G11 generator set more energy-saving than other similar small diesel generators?

This unit is equipped with SDEC exclusive 4Z3.0-G11 generator-dedicated engine, adopting advanced direct injection fuel combustion technology and optimized air intake and exhaust structure, which greatly improves fuel combustion utilization rate. The measured full-load fuel consumption is only 6.8L/h, which is significantly lower than most 25-30kVA peer products. Meanwhile, the brushless self-excited alternator reduces mechanical loss and electric loss during power generation. The overall matching optimization of engine and alternator realizes low energy consumption and high power generation efficiency, bringing better economic benefits for long-term use.

Q3: What daily maintenance does the 50Hz 22kW SDEC diesel generator set need?

Thanks to the brushless alternator design and mature SDEC engine structure, this unit has extremely low daily maintenance requirements. Daily inspection only needs to check diesel oil level, cooling water capacity and battery power to ensure normal starting conditions. Regularly clean the surface dust and radiator sundries to keep heat dissipation unobstructed. Replace engine oil, oil filter and fuel filter according to operating hours. There is no need to replace carbon brushes regularly like traditional brushed generators. Simple standardized maintenance can effectively extend the service life and ensure stable standby and power generation performance of the unit.