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Views: 0 Author: Site Editor Publish Time: 2026-08-10 Origin: Site
In EPC projects, industrial facility construction, and power grid engineering, transformers cannot always be selected directly from standard models. Different countries and regions have different grid voltage levels, installation conditions, and technical requirements. In actual procurement, it is common to encounter situations where standard products cannot meet project requirements and need to be specifically adjusted according to actual operating conditions.
Zisheng Electric specializes in the R&D and manufacturing of transformers and power equipment, with products covering oil immersed transformers, dry type transformers, and amorphous alloy transformers. The company provides customized power equipment solutions for EPC projects and industrial users, with products designed and manufactured according to international standards such as IEC 60076 and GOST. From early-stage technical communication and parameter confirmation to product design, manufacturing, and factory testing, Zisheng Electric provides comprehensive OEM transformer services based on customer requirements.
Every project has its own unique requirements. For example, some regions in Africa commonly use 11kV distribution systems, while industrial parks in Southeast Asia often adopt 22kV and 33kV medium-voltage distribution systems. In some industrial projects in the Middle East, transformers need to meet special requirements for high-temperature resistance and corrosion protection. These different operating conditions place higher demands on manufacturers’ flexible design capabilities and project experience. As a result, transformer manufacturers with strong OEM customization capabilities are becoming increasingly important for global power projects.
OEM (Original Equipment Manufacturer) transformer customization service refers to a cooperation method in which transformer manufacturers complete product design, manufacturing, testing and acceptance, and delivery according to the technical requirements, project parameters, or brand requirements provided by customers. Compared with traditional standardized procurement, OEM transformers focus more on matching the product with actual project requirements.
Common customization contents include: transformer capacity adjustment, input and output voltage design, structural form selection, insulation and protection level optimization, special environmental adaptability design, product nameplate, and brand customization. Through OEM methods, manufacturers can participate in technical confirmation in advance and reduce problems caused by mismatches between equipment and site conditions.
OEM transformer customization is not simply about changing the appearance, but involves multiple aspects including electrical parameters, mechanical structure, and production documents.
The transformer capacity needs to be selected according to the actual load conditions. Common OEM transformer capacities include 50kVA, 100kVA, 250kVA, 500kVA, 1000kVA, 1600kVA, 2500kVA, and above.
In industrial projects, capacity selection usually needs to consider the total load of production equipment, motor starting current, load growth requirements, and future expansion plans. Taking a manufacturing plant adding a new production line as an example, the existing power distribution system may not be able to meet the increased load demand. In this case, the transformer capacity needs to be reassessed instead of simply purchasing a standard model.
The transformer voltage level is usually not a fixed selection, but is determined by the power grid conditions of the project location.
For example, some rural projects in Africa use 11kV systems, while 22kV and 33kV medium voltage distribution systems are more common in industrial park projects in Southeast Asia.
Common specifications include:
11kV/0.4kV, 22kV/0.4kV, 33kV/0.415kV, 6.6kV/0.4kV.
Taking African rural electrification projects as an example, 11kV distribution transformers are widely used. In Southeast Asian industrial park projects, 22kV and 33kV systems are more common. Some mining, energy, and large industrial projects may use higher-level medium voltage systems.
After the voltage level is determined, manufacturers need to design the winding structure, insulation level, and related protection configuration according to system requirements.
According to different installation environments, OEM transformers can adopt different structural forms, mainly including oil immersed transformers, dry type transformers, amorphous alloy transformers, and prefabricated substation integrated solutions.
Different structures are suitable for different application scenarios:
Outdoor industrial projects usually tend to choose oil immersed transformers; commercial buildings, hospitals, data centers, and other places pay more attention to safety and usually adopt dry type transformers; long-term operating distribution systems may choose low-loss amorphous alloy transformers.
Customization Item | Common Requirements | Impact on Transformer Design |
|---|---|---|
Rated Capacity | 50kVA, 100kVA, 250kVA, 500kVA, 1000kVA, 2500kVA, etc. | Determines core size, winding specifications, and overall structure |
Primary Voltage | 6kV, 10kV, 11kV, 20kV, 22kV, 33kV, etc. | High-voltage winding design according to local grid voltage level |
Secondary Voltage | 0.4kV, 0.415kV, 0.433kV, etc. | Meets terminal equipment and low-voltage distribution requirements |
Frequency | 50Hz, 60Hz | Affects core flux design and operating parameters |
Phase Number | Three-phase, Single-phase | Selected according to the power supply system |
Vector Group | Dyn11, Dyn5, Yyn0, etc. | Affects system connection method |
Cooling Method | ONAN, ONAF, AN, AF | Determines heat dissipation design |
Protection Degree | IP23, IP31, IP54, etc. | Meets different installation environment requirements |
Installation Method | Indoor, Outdoor, Integrated compact substation | Affects structural dimension design |
Applicable Standards | IEC 60076, GOST, IEEE, etc. | Meets different country acceptance requirements |
Appearance Requirements | Nameplate, color, LOGO, packaging | Meets OEM brand requirements |
In OEM transformer projects, customers usually need to confirm technical parameters according to the actual application environment. Different parameters directly affect the transformer design solution, manufacturing cost, and operating performance.
A complete OEM transformer project usually goes through the following stages:
At the beginning of the project, customers need to provide information such as product type, rated capacity, primary and secondary voltage, operating environment, technical standards, and testing requirements. The manufacturer evaluates the technical requirements based on this information and confirms the design solution.
Transformer design mainly includes electromagnetic calculation, core design, winding design, insulation structure design, and temperature rise calculation.
For projects in special environments, key factors such as temperature rise, insulation life, protection degree, and material weather resistance need to be evaluated.
Taking outdoor projects in the Middle East as an example, enhanced corrosion protection treatment is usually required. For coastal projects, the impact of the salt spray environment on equipment needs to be considered.
The main production processes of transformers include core processing, winding manufacturing, active part assembly, vacuum drying, tank manufacturing, and final assembly.
During the actual manufacturing process, the processing accuracy of the core, winding clamping process, insulation treatment, and vacuum drying time will all affect the later operating performance of the transformer.
OEM transformers require relevant tests after the manufacturing process is completed. Routine tests include turns ratio test, winding resistance test, no-load loss test, load loss test, insulation test, and power frequency withstand voltage test. According to project requirements, additional tests such as temperature rise test, noise test, and lightning impulse test can also be conducted.
Industrial enterprises have high requirements for power supply continuity and usually require transformer design based on the load requirements of production equipment.
Application scenarios include automobile manufacturing plants, steel processing plants, chemical enterprises, food processing plants, and machinery manufacturing bases.
Such projects usually focus on long-term operating stability, equipment compatibility, and convenient maintenance in the future.
EPC projects usually involve multiple requirements, including IEC standards, local power regulations, specified technical parameters, and complete technical documentation.
For EPC projects, the greatest value of OEM is the early confirmation of technical parameters, avoiding problems such as mismatched voltage levels, installation dimensions, or interfaces after equipment delivery.
The renewable energy sector also has high customization requirements for transformers. Application scenarios include solar PV power plants, wind power projects, and energy storage systems.
Renewable energy projects usually need to consider grid connection requirements, operating environments, long-term load variations, and system stability.
Project | Example |
|---|---|
Product Type | Oil immersed transformer, dry type transformer |
Capacity Requirement | 1000kVA, 2500kVA |
Voltage Level | 33kV/0.415kV |
Installation Location | Africa, Southeast Asia, Middle East, etc. |
Installation Environment | Indoor, outdoor, high temperature, humid, salt spray environment |
Applicable Standards | IEC 60076, GOST, etc. |
Certification Requirements | CE or local certifications |
Quantity Requirement | Single unit purchase or bulk purchase |
Delivery Requirements | Sea transportation packaging, test reports, technical documents |
To improve project confirmation efficiency, customers usually need to provide the following information:
When selecting an OEM supplier, price is not the only consideration. Manufacturing capability and project experience are equally important.
Reliable OEM manufacturers usually have independent design teams, product development capabilities, and project technical support experience. They can optimize designs according to customer requirements instead of simply manufacturing standard products.
Attention should be paid to production equipment, raw material management, quality systems, and product testing capabilities.
Transformers are long-term operating equipment, so quality control during the manufacturing process is extremely important.
For export projects, manufacturers need to be familiar with international transportation packaging, export documents, project acceptance requirements, and environmental characteristics in different regions.
Project delivery experience can reduce communication costs during project execution.
Zisheng Electric specializes in the R&D and manufacturing of transformers and power equipment, providing OEM transformer customization services for EPC projects, industrial users, and power engineering projects. Products cover oil immersed transformers, dry type transformers, amorphous alloy transformers, and related power equipment, which can be designed and manufactured according to international standards such as IEC 60076 and GOST.
We can complete parameter confirmation, product design, and manufacturing support according to project requirements, including electrical performance matching, structural optimization, and technical document support.
Products can be designed according to the grid conditions and environmental characteristics of different project locations, including voltage level matching, frequency adaptation, and standard compliance confirmation.
According to the operating environments of different countries and regions, Zisheng Electric can optimize product structures, protection treatments, and material selection based on local environmental conditions, providing power distribution equipment and technical solutions suitable for different environmental requirements.
According to project requirements, we can provide technical data sheets, outline drawings, installation foundation drawings, factory test reports (Chinese and English bilingual), and quality documents to support project acceptance and on-site installation guidance.
From technical confirmation, production manufacturing, to final delivery, Zisheng Electric provides complete OEM transformer manufacturing services according to project requirements.
The cooperation process includes preliminary technical confirmation, product selection recommendations, production progress tracking, factory testing and acceptance, and follow-up technical support.
The core of OEM transformer customization is to complete product design and manufacturing matching according to actual project requirements, rather than simply providing standard equipment.
For engineering companies, industrial enterprises, and power equipment suppliers, choosing a transformer manufacturer with design capabilities, manufacturing experience, and project experience can help improve equipment compatibility and reduce project implementation risks.
With the continuous development of global industrial construction, renewable energy projects, and power infrastructure, OEM transformer customization services are playing an increasingly important role in the power equipment supply chain.
If you need an OEM transformer technical solution, you can contact Zisheng Electric according to your project parameters for selection confirmation. For OEM transformer customization projects, including selection solutions, technical parameters, and procurement support, please send your project information through the official channels to obtain technical feedback.
