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Romania's distribution system operators (DSOs) including Distribuție Energie Oltenia, Rețele Electrice (Dobrogea, Banat, Muntenia), and Delgaz Grid are heavily investing in modernizing overhead medium-voltage (MV) lines. Pole-mounted distribution transformers are pivotal to replacing aging communist-era 10kV/20kV units with high-efficiency, low-loss overhead step-down units.
Romania has experienced rapid deployment of solar PV and wind capacities, especially in Dobrogea and the southern agricultural belt. Pole-mounted transformers serve as ideal, compact step-up/step-down coupling units for distributed agri-voltaic setups, small wind clusters, and commercial micro-generation nodes requiring robust outdoor tolerance.
All overhead distribution equipment delivered to the Romanian market strictly adheres to EU Directive 2009/125/EC (Tier 2). Our engineered units integrate high-grade grain-oriented silicon steel (CRGO) and amorphous alloy cores, cutting no-load core losses by up to 70% and drastically reducing lifecycle operational expenditure.
Overhead pole-mounted transformers represent the economic backbone of medium-to-low voltage (20kV to 0.4kV) rural and suburban power supply across Romania. In mountainous regions such as the Carpathians, Apuseni, and Maramureș, heavy snow loads and sub-zero winter temperatures demand transformers with superior hermetic sealing, reinforced porcelain or composite bushings, and premium mineral insulating oil with low pour points.
Conversely, in the heavy agricultural flatlands of Ialomița, Călărași, and Timiș, pole-mounted units supply deep-well water irrigation pumps, automated grain silos, and agribusiness complexes. In urban fringes surrounding Bucharest, Cluj-Napoca, Timișoara, and Iași, these transformers deliver stable secondary power to light industrial parks, logistics hubs, and expanding residential developments without occupying valuable ground footprint.
Hanzhong Xinsanhuan Transformer Co., Ltd. is a professional transformer manufacturer located in Hanzhong City, Shaanxi Province, China—a renowned historical and cultural city known for its strategic geographical location at the heart of the country. Since its establishment, the company has been dedicated to the research, development, design, manufacturing, and service of high-quality power transmission and distribution equipment, providing reliable solutions to customers across domestic and international markets, including tailor-made configurations for the Romanian energy grid.
With an advanced manufacturing complex equipped with state-of-the-art automated core slitting lines, vacuum casting chambers, computerized winding machinery, and high-voltage testing halls, XINSANHUAN serves as a dependable industrial partner for Romanian utility contractors, engineering firms (EPCs), and industrial developers.
Our pole-mounted distribution transformers are engineered to seamlessly interface with Romania's 3-phase MV distribution networks (typically operated at 10kV, 15kV, or 20kV at 50Hz). Below is a typical performance benchmark tailored for Romanian distribution systems:
| Parameter | Standard Romanian Specification | XINSANHUAN Engineered Capability |
|---|---|---|
| Rated Power Range | 16 kVA to 630 kVA (Single & Three-Phase) | 10 kVA up to 1000 kVA Customized Overhead Units |
| Primary Voltage (HV) | 6 kV, 10 kV, 15 kV, 20 kV (50 Hz) | Dual primary voltage options (e.g., 20/10 kV switchable) |
| Secondary Voltage (LV) | 400 V / 230 V or 415 V / 240 V | 400V (Ph-Ph) / 230V (Ph-N) with multiple tap positions |
| Tapping Range | ±2×2.5% or ±5% Off-Circuit Tap Changer (OCTC) | Standard 5-position off-load tap changer with padlocking |
| Vector Group | Dyn11, Dyn5, Yzn11 | Dyn11 standard, customized vector configurations available |
| Efficiency Standards | EU Directive 548/2014 & 2019/1783 (Tier 2) | Exceeds Ecodesign Tier 2 (Ultra-low no-load $P_0$ and load $P_k$ losses) |
| Cooling Method | ONAN (Mineral Oil or Synthetic Ester) | ONAN hermetically sealed or conservator design with corrugated tank |
| Corrosion Protection | ISO 12944 C3 to C5-M (Marine & Industrial) | Hot-dip galvanized tanks or multi-coat epoxy polyurethane (RAL 7035/7038) |
The company specializes in the production of power transformers up to 110kV, rectifier transformers, amorphous alloy transformers, oil-immersed distribution transformers, dry-type transformers, compact prefabricated substations, and other customized transformer solutions. With years of industry experience and continuous technological innovation, XINSANHUAN has developed a comprehensive product portfolio capable of meeting the diverse requirements of power utilities, industrial facilities, renewable energy projects, infrastructure developments, and commercial applications throughout Romania and greater Europe.
To ensure the highest standards of product quality and performance, the company has invested heavily in advanced manufacturing equipment, modern production lines, and comprehensive testing facilities. Supported by a highly qualified engineering and technical team, XINSANHUAN maintains strict quality control throughout every stage of production, from design and raw material procurement to manufacturing, testing, and final delivery.
The company's robust research and development capabilities enable it to continuously improve product efficiency, reliability, and environmental performance in response to evolving market demands. Every distribution transformer intended for export to Romania undergoes rigorous routine, type, and special tests in strict accordance with IEC 60076 and EN 50588-1 standards, ensuring zero-defect deployments across critical infrastructure.
Since 2006, Hanzhong Xinsanhuan Transformer Co., Ltd. has established a comprehensive management system and obtained a series of internationally recognized certifications, including ISO 9001 Quality Management System Certification, ISO 14001 Environmental Management System Certification, and ISO 45001 Occupational Health and Safety Management System Certification. The company has also received Energy-Saving Product Certification and has been honored with the title of Green Factory, reflecting its commitment to sustainable manufacturing practices and environmental responsibility.
As a recognized High-Tech Enterprise, XINSANHUAN places strong emphasis on technological advancement and intellectual property development. The company has obtained numerous national patents covering product design, manufacturing processes, and technical innovations. In addition, its products have achieved CE certification, enabling compliance with European market requirements and facilitating exports to a broader international customer base. The company also holds independent import and export rights, ensuring efficient global trade operations and responsive customer service for Romanian utility tenders and procurement packages.
Supplying heavy industrial complexes in Galați (metallurgy), Craiova (automotive), and Ploiești (petrochemical) with heavy-duty traction, furnace, and rectifier transformers built for high harmonic resilience and continuous heavy cyclic loading.
Step-up and compact substation units engineered to withstand volatile generation patterns in Constanța and Tulcea wind farms, as well as utility-scale PV parks across southern Romania, featuring integrated smart protection interfaces.
Dedicated high-voltage traction transformers and earthing devices catering to CFR (Căile Ferate Române) railway corridor modernization, high-speed rail electrification upgrades, and urban transit tram/metro substation networks.
