Turkey Industrial Photovoltaic 380V Oil-Immersed Transformer Solution
Writer： Hengfeng you electric Time：2026-01-09 views：times
As a crucial Eurasian energy hub, Turkey is driving rapid growth in demand for 380V oil-immersed transformers through grid upgrades and expansion of photovoltaic capacity. This report, provided by Victoria, Turkey Market Manager at Hengfengyou Electric (victoria@hengfengyou.com), analyzes the market outlook and entry requirements for you.
I. Market Demand Analysis for 380V Oil-Immersed Transformers in Turkey
In 2025, Turkey's role as a key Eurasian connector, coupled with its energy infrastructure upgrades and expansion of the new energy industry, has led to a surge in demand for transformers. According to International Energy Agency data, Turkey's high and low-voltage switchgear market is projected to exceed $1.5 billion in 2025, doubling compared to five years ago, with demand for distribution transformers seeing a significant increase in share.
In the Industrial Electricity Sector: The Turkish government has announced an allocation of 584 billion Turkish Lira (approx. $16.6 billion) for post-disaster reconstruction, focusing on infrastructure in the İskenderun region. This is expected to drive 4-5% growth in the construction sector in 2025, with electricity loads for industries like steel and building materials continuously rising. In dense industrial zones such as the İskenderun Steel Industrial Zone and the Bursa Automotive Industrial Zone, frequent voltage fluctuations (up to ±15%) create an urgent need for stable power supply equipment.
In the Photovoltaic Power Generation Sector: Turkey's PV installed capacity is experiencing explosive growth. New PV installations reached a record 8.5 GW in 2024. In the first half of 2025, an additional 3.1 GW was added, bringing the cumulative installed capacity to 23 GW. Data released by the Turkish Electricity Transmission Corporation (TEİAŞ) shows 4,694 MW of new PV capacity was added in 2025, raising the cumulative total to 24,795 MW, nearing 25 GW. Notably, commercial and industrial self-consumption PV power plants contributed 4,175 MW of the new capacity, accounting for nearly 90% of annual additions, generating substantial demand for 380V class transformers.
From an Import Perspective: In the first 11 months of 2024, Turkey's total imports reached $254 billion, a 4.5% year-on-year increase, with machinery, equipment, and electronic products from China constituting over 45% of that. Within the electrical equipment segment, imports of distribution equipment like isolating transformers continued to grow. The rigid demand from industrial and PV applications is solidifying 380V oil-immersed transformers as a mainstream product category in the market.
II. Turkish Customer Requirements for 380V Oil-Immersed Transformers
Turkish customer requirements for 380V oil-immersed transformers center on three core aspects: adaptability, stability, and durability.
Adaptability: Products must suit local combined industrial and PV application scenarios, support the collaborative operation mode of "PV + load," feature bi-directional power regulation capability, and adapt to the fluctuating nature of PV generation and industrial loads.
Stability: The required input voltage range is 320V–460V (±20%), with output precision stabilized at 380V±1%. A response time of ≤20ms is needed to suppress voltage flicker, and the output total harmonic distortion (THD) must be ≤3% to avoid harmonic interference with precision equipment.
Durability: To withstand the Anatolian dust and Aegean salt-spray climates, an IP54 protection rating and a fully-sealed corrugated tank design are required. The transformer must be capable of full-load operation in high-temperature environments up to 55°C, with optional -40°C cold-resistant oil for low-temperature settings. Customers explicitly demand a design life of no less than 20 years to reduce lifecycle costs.
Additionally, products must have nameplates and technical documentation in both Turkish and English to facilitate operation and maintenance by local personnel.
III. Certification and Regulatory Requirements for 380V Oil-Immersed Transformers in Turkey
To enter the Turkish market, 380V oil-immersed transformers must strictly comply with TSE (Turkish Standards Institution) certification requirements, the core pass for market access. TSE certification integrates the EU CE framework with localized requirements, necessitating either type certification (for mass-produced goods) or batch certification (for single import lots).
Key testing items include insulation withstand voltage test (test voltage = 2Un + 1000V), earth continuity test (resistance ≤0.1Ω), abnormal operation test (operating continuously for 48 hours at 110% rated voltage), and TS 13736 seismic test (seismic resistance level ≥5). Furthermore, products must comply with CE and
IEC 60076 series standards, meet the basic requirements of Turkey's Energy Market Regulatory Authority (EMRA), and adhere to the Turkish RoHS version controlling 10 hazardous substances, requiring a Declaration of Conformity (DoC) and third-party test reports.
Hengfengyou Electric has completed full compliance preparations in advance. Our products have obtained TSE certification via the EU CB scheme conversion process, possess locally recognized full-scope test reports, and our factory has passed TSE on-site audits, enabling us to directly meet local entry requirements.
IV. 380V Oil-Immersed Transformer Solution for Turkey and Hengfengyou's Delivery Results
Friendly reminder from Victoria, Turkey Market Manager at Hengfengyou Electric (victoria@hengfengyou.com): Turkey's 380V oil-immersed transformers are regulated by the Turkish Standards Institution (TSE) and the Energy Market Regulatory Authority (EMRA). Products must comply with mandatory TSE safety certification and meet standards such as CE and IEC 60076.
Addressing Turkish market demands and compliance needs, Hengfengyou Electric has developed a customized 380V oil-immersed transformer solution, successfully overcoming three core challenges: local voltage fluctuations, complex climates, and stringent certification.
Technical Advantages: Utilizing contactless thyristor voltage regulation technology enables rapid voltage stabilization. The transformers offer 125% continuous overload and 150% short-term (10-minute) overload capacity, suiting combined industrial and PV applications. The fully-sealed oil-immersed structure combined with IP54 protection effectively resists dust and salt-spray erosion. Natural cooling design meets the needs of unmanned operation in remote areas.
Certification & Compliance: Leveraging a professional team, Hengfengyou initiates certification planning six months in advance. Relying on EU CB certificates reduces testing items by approximately 30%. The entire TSE certification process is completed within 12 weeks, avoiding common pitfalls like missing labels or non-compliant technical documentation.
Project Delivery: Utilizing the logistical advantage of proximity to ports in Turkey's Dilovası Industrial Zone, we optimize the supply chain layout, enabling efficient coordination between sample testing and batch delivery. In the first half of 2025, Hengfengyou successfully delivered two batches of 380V oil-immersed transformers to a Bursa auto parts manufacturer and an Antalya PV project in Turkey. The equipment operates stably, reducing production downtime caused by voltage fluctuations by 82%, and has received high praise from customers.
V. Summary
The year 2025 presents a structural growth opportunity in Turkey's transformer market, with pronounced demand for 380V oil-immersed transformers driven by industrial and PV applications. Success hinges on navigating compliance certification and achieving localized technical adaptation. Hengfengyou Electric, with its precise market insight, comprehensive compliance certification capabilities, and customized technical solutions, has achieved efficient delivery in the Turkish market. Our 380V oil-immersed transformers fully match local needs in stability, durability, and compliance. As Turkey's energy transition deepens, Hengfengyou will continue to optimize its offerings, providing reliable support for the upgrade of local energy infrastructure and serving as a mature reference for more companies entering the Turkish transformer market.
VI. Data Sources
-
International Energy Agency, World Energy Outlookreport (Turkey's high and low-voltage switchgear market size data).
-
Turkish Ministry of Energy and Natural Resources, 2035 Energy Transformation and Renewable Energy Strategyand 2025 Budget Proposal (renewable energy installation targets).
-
Data published by the Turkish Electricity Transmission Corporation (TEİAŞ) (2025 PV installed capacity).
-
Turkish Central Bank and Ministry of Trade statistics (2024-2025 import trade data).
-
Turkish Electrical Equipment Manufacturers' Association data (localization rate in the high and low-voltage switchgear industry).
-
Turkish Standards Institution (TSE) certification requirements and IEC 60076 series standards (oil-immersed transformer test items).
-
Hengfengyou Electric internal project delivery reports (operation data for the Bursa auto parts manufacturer and Antalya PV project).
