dingbo@dieselgeneratortech.com
+86 134 8102 4441
Aug. 27, 2026
At Dingbo Power, we know that the best solutions start not with a product sheet, but with a deep understanding of the customer’s real needs. Our latest success story—a 50 kVA diesel generator set now ready for shipment to Varna, Bulgaria—is a perfect example of this philosophy in action.
On May 30, Dingbo Power initiated in-depth communication with a new client from Bulgaria to clarify their exact power supply demands. The customer required a diesel generator set to serve as an emergency backup power source for their solar PV system. Different from regular prime power generators, this unit would only be used for occasional standby power support, with an annual operating time of less than 100 hours. During early negotiations, the client stated that they had no strict brand requirements for engines or alternators. Instead, they focused on reliable quality and cost-effective pricing suitable for low-frequency standby scenarios.
Professional Customized Generator Solution
Based on the customer’s practical application environment and budget positioning, Dingbo Power avoided rigid template quotation. With more than 20 years of professional experience in the generator industry, our technical team customized the most matching configuration for the project. We recommended a generator set equipped with a Shangchai engine and Dingbo self-produced alternator. This mature configuration features stable performance, strong adaptability for standby use, and outstanding cost advantages, fully meeting the low-hour working demands of solar power systems.
The final configuration was agreed upon as follows:
Engine: SDEC 4ZT3.2-G21
Alternator: Dingbo DB-40-4A
Controller: SmartGen HGM6110N
Below are the main technical data of the Standby Power 40kW diesel generator:
Genset model: DB-40GF
Type: Silent type
Standby power: 40KW/50KVA
Rated voltage: 400/230V
Rated Current: 64A
Speed/frequency: 1500rpm/50Hz
Power factor: 0.8lag
Phase & Wire:3 Phase 4 Wire
Noise level: 75-85 dBA at 7m
Dimensions:2290mm*950mm*1440mm
Weight: 1038kg
| Manufacturer: | Shanghai New Power Automotive Technology Co., Ltd. |
| Engine model | 4ZT3.2-G21 |
| Prime power: | 39kW |
| Standby power: | 43KW |
| Frequency/Speed: | 50Hz/1500RPM |
| Cylinders no. & Type: | 4 cylinders, V-type, 4 stroke, diesel engine, in-line |
| Aspiration: | Turbocharged |
| Displacement: | 3.2L |
| Compression ratio | 14.7:1 |
| Governor | Electronic |
| Bore x Stroke(mm): | 98mm x105mm |
| Start mode: | Electric start |
| Starter motor: | 12V DC |
| Fuel Injection System: | Direct injection |
| Fuel consumption at Prime power@100%/75%/50%/25%(L/h) | 8.34 / 6.29 / 4.46 / 2.73 |
| Total Lubrication System Capacity (with Combo Filter) | High level 10 L/Low level 8 L |
| Cooling way | Water-cooled |
| Coolant capacity -engine only | 3.2L |
On June 1, we provided the official quotation with CIF Varna Port terms, covering complete product parameters, configuration lists and shipping details. Throughout the whole consultation period, our team maintained continuous and active follow-up, promptly answering all technical questions and project concerns raised by the client. During the customer’s evaluation period, we persisted in professional and patient communication to ensure the client fully understood our product advantages and service guarantees.
After half a month of comprehensive comparison and consideration, the Bulgarian client recognized our professional customization capability and reliable product quality. On June 15, the customer took the initiative to contact us and officially confirmed the cooperation. From demand analysis and solution optimization before ordering to rapid response and detailed docking after order confirmation, Dingbo Power always adheres to customer-oriented service standards to deliver tailored power solutions.

At present, this customized standby generator set is ready for shipment to Bulgaria. We are confident that the high-quality unit will provide stable and reliable emergency power support for the client’s solar PV system. This cooperation once again demonstrates Dingbo Power’s strength in customizing generators for different application scenarios. In the future, we will continue to provide personalized, cost-effective and high-stability power generation solutions for global industrial and commercial projects.
For more information about our diesel generator sets and customized solutions, please contact our sales team.
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