D Series – Diesel Generator Sets

High-Performance Diesel Generator Sets with Doosan Power

Enerzip® D Series Diesel Generator Sets are powered by genuine Doosan industrial engines and engineered for reliable performance in manufacturing plants, construction sites, high-rise buildings, mining, and medium-to-large industrial applications. The series combines stable output, practical durability, and cost efficiency for demanding operating conditions.

Covering a power range from 165 kVA to 935 kVA, the D Series supports standby, prime power, and continuous operation, making it a dependable solution for industrial users seeking balanced performance and long-term value.

Genuine Doosan Engine Platform: Robust industrial engines with proven durability and global parts availability.
Strong Load Response: High-torque characteristics support stable starting of heavy industrial equipment.
System-Level Integration: Optimized matching of engine, alternator, control, cooling, and structure by Enerzip®.
Cost-Effective Industrial Design: Reliable performance at an optimized investment level.
Intelligent Control Compatibility: Supports ATS, parallel operation, and remote monitoring via SmartGen, ComAp, or DSE.

Description

Enerzip® D Series: High-Efficiency Industrial Diesel Generator Sets

The Enerzip® D Series Diesel Generator Sets are developed for operators who require a dependable balance between performance, durability, and operating cost. Powered by proven Doosan industrial engines, the D Series covers an output range from 165 kVA to 935 kVA, serving a wide range of industrial, commercial, and infrastructure applications.

Rather than simple component assembly, Enerzip® applies a system-oriented engineering approach, integrating the engine platform with proprietary heavy-duty sheet metal manufacturing, thermal management, and electrical matching. This ensures long-term structural stability, consistent electrical output, and reliable operation under demanding site conditions. For broader platform comparison and selection guidance, you may also explore the Diesel Generator Sets Series.

1. The Power Core: Doosan Engine Technology

At the core of the D Series Diesel Generator Sets is the Doosan industrial engine platform, widely applied in medium- to high-capacity stationary power generation.

Doosan engines are recognized for their robust mechanical design, stable long-hour operation, and service-friendly layout. Their balanced power density and torque characteristics make them suitable for industrial plants, construction projects, and infrastructure facilities requiring reliable prime or standby power. Supported by global spare parts availability, the engine platform helps reduce downtime and supports predictable maintenance planning.

2. Starting Systems: Reliable Engine Starting

To ensure dependable response during grid outages or scheduled load transfer, Enerzip® equips the D Series Diesel Generator Sets with a proven starting system configuration.

Heavy-duty starting motors from Delco Remy, Bosch, or Denso provide consistent cranking performance, while high-CCA maintenance-free batteries from VARTA, Camel, or Sail support reliable starting under varying environmental conditions, including high humidity or vibration-prone industrial sites.

3. Alternator: Stable Electrical Energy Conversion

Mechanical output from the Doosan engine is converted into stable electrical power through carefully matched alternator systems.

Customers may select alternators from LEROY SOMER, STAMFORD, SIEMENS, MARATHON, ENGGA, or Shanghai Stamford, depending on project requirements. All alternators are equipped with H-Class insulation and protective treatments suitable for humid or dusty environments. Digital AVR systems support controlled voltage performance for industrial loads and auxiliary electrical systems.

4. Control Systems: Intelligent Power Management

The D Series Diesel Generator Sets integrate industry-standard digital control platforms to support safe operation, system monitoring, and power management.

Controller options include DSE (Deep Sea Electronics), ComAp, DEIF, and SmartGen, with support for RS485 and CAN-bus communication. For general reference on generator control platforms used for monitoring, protection, and automation, buyers may also review DSE genset controllers. These systems allow integration with building management systems (BMS), ATS units, and optional remote monitoring platforms for real-time status visibility.

5. Cooling Systems: High-Ambient Thermal Design

Thermal management is a critical factor in generator longevity and output stability.

The D Series can be configured with 50°C high-ambient cooling systems, subject to proper installation and ventilation. Cooling components are sourced from qualified suppliers including Weifang Sinrui, Guangzhou Nanhong, and Jiangsu Aksa China, supporting stable operation in hot climates and enclosed generator rooms.

6. Frame & Fuel Tank: Structural Durability

The structural foundation of the D Series Diesel Generator Sets is engineered and manufactured by Enerzip®.

Heavy-duty base frames are fabricated using structural steel and controlled welding processes to improve rigidity and vibration control. Integrated base-mounted fuel tanks are designed for typical 8–24 hour operation, with leak-tested construction to support safe and reliable daily use.

7. Silent Canopy: Acoustic & Environmental Protection

For installations requiring noise control or weather protection, Enerzip® offers customized enclosure solutions.

Enclosures are treated using multi-stage powder coating processes to improve resistance to corrosion, UV exposure, and environmental wear. Silent and super silent configurations are available, utilizing fire-retardant acoustic materials and optimized airflow design to balance noise reduction and cooling efficiency.

8. Exhaust & Emission System

Enerzip® integrates exhaust systems designed to balance emission compliance, acoustic performance, and engine protection.

Exhaust configurations may incorporate solutions from Kailong High-tech or Weifu High-technology, while industrial mufflers from Foshan Welling or Weifang Sinrui help reduce exhaust noise without excessive backpressure.

9. Containerized Power Solutions

For larger D Series units or project-based deployments, containerized configurations are available.

ISO containers are structurally modified in-house to meet electrical and mechanical requirements for transportation and site operation. Optional internal lighting, ventilation, and fire protection systems support safe walk-in maintenance and long-term deployment.

Technical Specification Matrix

Category	Partnered Suppliers & Standards
Product Type	Industrial Diesel Generator Sets
Output Range	165kVA – 935kVA
Engine Platform	Doosan Heavy Industries
Starting Motor	Delco Remy / Bosch / Denso
Starting Battery	VARTA / Camel / Sail (High CCA Maintenance-Free)
Alternator Technology	LEROY SOMER / STAMFORD / SIEMENS / MARATHON / ENGGA / Shanghai Stamford
Control Intelligence	DSE / ComAp / DEIF / SmartGen (Cloud-Enabled)
Cooling System	50°C Tropical Grade (Sinrui / Nanhong / Aksa China)
Chassis / Frame	Enerzip® Proprietary (Heavy-Duty Sheet Metal Integrated)
Silent Canopy	Enerzip® Custom (Advanced UV-Resistant Powder Coating)
Containerized Sets	Enerzip® Modified (ISO Electrical & Structural Compliant)
Exhaust Purification	Kailong High-tech / Weifu High-technology
Acoustic Silencing	Foshan Welling / Weifang Sinrui (High-Attenuation)

Why Enerzip® Diesel Generator Sets?

Choosing the Enerzip® D Series is an investment in certainty and efficiency. By controlling the manufacturing of the chassis and enclosures through our own Heavy-Duty Sheet Metal Line and sourcing core components from global leaders like Doosan, Bosch, and Stamford, we eliminate the vulnerabilities common in lower-tier Diesel Generator Sets. Whether you are supporting a telecommunications tower or a manufacturing plant, Enerzip® provides the engineering depth and global support to ensure that when the grid fails, your power doesn’t.

Genset Model	ESP(KVA)	ESP(KW)	PRP(KVA)	PRP(KW)	Fuel Cons (L/H @ 70% load)	LWH(mm) Open Type	LWH(mm) Silent Type	Engine Model	Country of origin	Cyl Arrangement	Displacement(L)	Gov	Cooling
D165D5	165	132	150	120	25.5	29059301930	375011602272	DP086TA	South Korea	6L	8.1	E	Water Cooling
D220D5	220	176	200	160	31.7	26909501500	390012202212	P086TI	South Korea	6L	8.1	E	Water Cooling
D250D5	250	200	225	180	36.8	26909501500	390012202212	DP086LA	South Korea	6L	8.1	E	Water Cooling
D275D5	275	220	250	200	43.6	295012301625	395014502230	P126TI	South Korea	6L	11.1	E	Water Cooling
D313D5	313	250	275	220	43.6	295012301625	395014502230	P126TI	South Korea	6L	11.1	E	Water Cooling
D330D5	330	264	300	240	47	295012301625	395014502230	P126TI-II	South Korea	6L	11.1	E	Water Cooling
D413D5	413	330	375	300	57.1	295012301625	395014502230	DP126LB	South Korea	6L	11.1	E	Water Cooling
D440D5	440	352	400	320	65.1	298014001920	427016502520	P158LE	South Korea	8V	14.6	E	Water Cooling
D500D5	500	400	450	360	72.9	304014402110	427016502520	DP158LC	South Korea	8V	14.6	E	Water Cooling
D550D5	550	440	500	400	83.4	304014402110	427016502520	DP158LD	South Korea	8V	14.6	E	Water Cooling
D625D5	625	500	563	450	94.2	330014852070	450018002520	DP180LA	South Korea	10V	18.3	E	Water Cooling
D700D5	700	560	625	500	103.8	330014852070	450018002520	DP180LB	South Korea	10V	18.3	E	Water Cooling
D750D5	750	600	675	540	109.2	345016302200	485020002520	DP222LB	South Korea	12V	21.9	E	Water Cooling
D825D5	825	660	750	600	119.1	345016302200	485020002520	DP222LC	South Korea	12V	21.9	E	Water Cooling

Genset Model	ESP(KVA)	ESP(KW)	PRP(KVA)	PRP(KW)	Fuel Cons (L/H @ 70% load)	LWH(mm) Open Type	LWH(mm) Silent Type	Engine Model	Country of origin	Cyl Arrangement	Displacement(L)	Gov	Cooling
D206D6	206	165	188	150	31.6	26909501500	390012202212	DP086TA	South Korea	6L	8.071	E	Water Cooling
D250D6	250	200	225	180	37.7	26909501500	390012202212	P086TI	South Korea	6L	8.071	E	Water Cooling
D275D6	275	220	250	200	41.7	26909501500	390012202212	DP086LA	South Korea	6L	8.071	E	Water Cooling
D335D6	335	268	313	250	52.3	295012301625	438014202212	P126TI	South Korea	6L	11.051	E	Water Cooling
D388D6	388	310	350	280	56	297510151510	438014202212	P126TI-II	South Korea	6L	11.051	E	Water Cooling
D450D6	450	360	400	320	67.5	304013301960	447018502520	P158LE-1	South Korea	8V	14.618	E	Water Cooling
D500D6	500	400	450	360	74.7	298014001920	447018502520	P158LE	South Korea	8V	14.618	E	Water Cooling
D575D6	575	460	520	416	83.4	304014402110	447018502520	DP158LCS	South Korea	8V	14.618	E	Water Cooling
D625D6	625	500	563	450	92.9	304014402110	447018502520	DP158LDS	South Korea	8V	14.618	E	Water Cooling
D700D6	700	560	625	500	106.6	330014852070	450018002520	DP180LAS	South Korea	10V	18.273	E	Water Cooling
D750D6	750	600	675	540	114.2	330014852070	450018002520	DP180LBS	South Korea	10V	18.273	E	Water Cooling
D825D6	825	660	750	600	120.4	345016302200	485020002520	DP222LAS	South Korea	12V	21.927	E	Water Cooling
D875D6	875	700	785	628	127.7	345016302200	485020002520	DP222LBS	South Korea	12V	21.927	E	Water Cooling
D935D6	935	748	850	680	134.4	345016302200	485020002520	DP222LCS	South Korea	12V	21.927	E	Water Cooling

Technical Notes

Fuel consumption values are typical reference figures measured at 70% load under standard test conditions. Actual fuel consumption may vary depending on fuel quality, ambient temperature, altitude, load profile, alternator efficiency, and installation conditions.

Applications

Typical Applications of Enerzip® D Series Diesel Generator Sets

1. Industrial & Manufacturing

Manufacturing facilities such as textile mills, plastic processing plants, and assembly factories require stable and continuous power to protect production equipment and reduce downtime caused by grid interruptions.

The Enerzip Advantage:
The D Series Diesel Generator Sets are commonly configured with high-ambient cooling systems and properly matched alternators to support stable three-phase power output in industrial environments. This configuration helps reduce thermal stress and voltage fluctuation when starting motors or operating production lines under continuous or prime power conditions.

Typical Applications: Factory backup power, industrial diesel generator systems, prime power for manufacturing operations.

2. Healthcare & Hospitals

Regional hospitals, clinics, and healthcare centers depend on reliable standby power to support essential medical equipment and emergency systems during power outages.

The Enerzip Advantage:
The D Series Diesel Generator Sets support integration with automatic transfer switches (ATS) for rapid power restoration. Optional silent or weatherproof enclosures are available to reduce operating noise, making the units suitable for healthcare environments where acoustic control and operational stability are required.

Typical Applications: Hospital emergency generators, healthcare backup power systems, silent diesel generators.

3. Data Centers & Telecom

Telecom facilities, server rooms, and distributed data processing sites require stable electrical output to protect sensitive electronic and communication equipment.

The Enerzip Advantage:
The D Series utilizes digital voltage regulation and industry-standard control systems to maintain stable output and compatibility with UPS systems. This makes the units suitable for edge data centers, telecom base stations, and communication infrastructure requiring dependable standby power.

Typical Applications: Data center backup generators, telecom base station power systems, communication site standby power.

4. Construction & Mining

Construction sites, quarries, and mining operations often operate in environments with dust, vibration, and frequent relocation, placing high demands on generator durability.

The Enerzip Advantage:
The D Series Diesel Generator Sets are built on reinforced base frames with controlled welding processes to enhance structural stability. Combined with heavy-duty air filtration and optional mobile or trailer-mounted configurations, the units are well suited for temporary or semi-permanent power supply in demanding site conditions.

Typical Applications: Construction site power, mining generators, mobile diesel generator sets.

5. Commercial Real Estate

Commercial buildings such as hotels, office towers, and shopping centers require backup power solutions that balance performance, noise control, and space efficiency.

The Enerzip Advantage:
The D Series can be supplied with compact footprints and silent enclosure options designed to meet typical urban noise requirements. Durable surface treatment and enclosure design also support long-term outdoor installation in commercial environments.

Typical Applications: Commercial standby generators, hotel backup power systems, building emergency power.

6. Agriculture & Farming

Agricultural operations often face unstable grid supply and corrosive operating conditions caused by humidity, dust, and livestock by-products.

The Enerzip Advantage:
Enerzip® applies corrosion-resistant surface treatment and robust enclosure design to protect Diesel Generator Sets used in agricultural environments. The D Series supports reliable operation for irrigation, ventilation, and farm processing equipment with manageable maintenance requirements.

Typical Applications: Farm backup generators, agricultural power supply, irrigation and livestock facility power.

7. Transport & Infrastructure

Public infrastructure facilities such as toll stations, transport hubs, and water treatment plants require Diesel Generator Sets capable of extended operation and autonomous power supply.

The Enerzip Advantage:
The D Series Diesel Generator Sets can be configured with integrated base fuel tanks or external fuel systems to support extended runtime. Service-friendly layout and standardized components help maintain high availability for essential public services.

Typical Applications: Public infrastructure backup power, transport facility generators, water treatment and utility power systems.

Related Diesel Generator Series:
• Y Series – Robust industrial diesel generator sets for heavy-load operating conditions
• C Series – Cummins-powered diesel generator sets for mission-critical and international projects

FAQ

What types of applications are the D Series Diesel Generator Sets best suited for?

The Enerzip® D Series Diesel Generator Sets are designed for medium-to-large industrial and commercial applications where a balance between performance, durability, and cost efficiency is required. Typical use cases include manufacturing plants, construction sites, commercial buildings, telecom facilities, agricultural operations, and public infrastructure. The Doosan engine platform offers stable output and strong torque characteristics, making the D Series suitable for both standby and prime power operation, as well as for sites with mixed loads such as motors, pumps, compressors, and general electrical systems.

Can the D Series Diesel Generator Sets operate continuously or as prime power?

Yes, the D Series Diesel Generator Sets can be configured for standby, prime power, or continuous operation, depending on project requirements. For prime or long-hour operation, system configuration such as cooling capacity, alternator selection, and fuel system design is optimized to support stable performance. Proper sizing, installation, and routine maintenance are essential to ensure reliable operation under extended load conditions, especially in industrial environments.

How does the D Series perform in high-temperature or harsh environments?

The D Series Diesel Generator Sets are commonly supplied with high-ambient cooling configurations designed for operation in environments up to 50°C, subject to appropriate ventilation and installation conditions. In addition, Enerzip® applies robust structural design, suitable filtration systems, and corrosion-resistant surface treatment to support operation in dusty, humid, or industrial environments. These measures help reduce thermal stress and extend equipment service life in challenging site conditions.

Are silent or weatherproof enclosure options available for the D Series?

Yes, the D Series Diesel Generator Sets can be supplied in open-type, weatherproof, silent, or super silent configurations. Enerzip® enclosures are designed to balance noise reduction, airflow, and maintenance accessibility, using heavy-duty steel structures and fire-retardant acoustic materials. Silent configurations are commonly selected for commercial buildings, hospitals, and urban installations where noise control is required, while weatherproof enclosures are suitable for outdoor industrial sites.

Can the D Series Diesel Generator Sets be integrated with ATS, UPS, or parallel systems?

The D Series Diesel Generator Sets are compatible with automatic transfer switches (ATS) and can be configured for integration with existing electrical systems such as UPS units or building management systems (BMS). Parallel operation is also available for projects requiring increased capacity or redundancy. System integration is typically designed based on site electrical requirements, future expansion plans, and operational priorities to ensure safe and stable power management.

What maintenance and service support can be expected for the D Series?

Routine maintenance of the D Series Diesel Generator Sets follows standard industrial practices, including regular inspection, oil and filter replacement, cooling system checks, and battery maintenance. The Doosan engine platform benefits from global spare parts availability, while Enerzip® provides system-level technical support for the complete generator set. This combined approach helps ensure manageable maintenance costs, predictable service intervals, and reduced downtime throughout the equipment’s operating life.

Related Products

Paralleling & Grid-connect Systems

Automatic Transfer Switches (ATS)

E Series – Biogas Generator Sets

C Series – Biogas Generator Sets

W Series – High Voltage Generators

Y Series – High Voltage Generators

MS Series – High Voltage Generators

M Series – High Voltage Generators

P Series – High Voltage Generators

C Series – High Voltage Generators

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