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Pre-engineered distribution transformers optimized for the Saudi Electricity Company (SEC) network standards, rural electrification, and regional industrial parks.
Accelerating grid reliability across Riyadh, Jeddah, Dammam, and giga-project developments under Saudi Vision 2030.
The Kingdom of Saudi Arabia (KSA) is undergoing an unprecedented modernization of its electrical distribution infrastructure. Under the directive of Saudi Vision 2030 and massive investments spearheaded by the Saudi Electricity Company (SEC), the medium-voltage overhead network is transitioning toward higher operational efficiency, reduced footprint, and smart fault detection.
The 20kV pole-mounted transformer represents a vital node in this modernization framework. While legacy networks in certain provinces operated predominantly on 13.8kV or 33kV levels, the standardized adoption of 20kV and dual-ratio 13.8/20kV or 20/33kV distribution architectures has gained substantial traction. This voltage step-up allows power utility planners to cut transmission line losses by over 30%, extend feeder reach across sprawling desert developments, and streamline equipment standardization across residential, commercial, and agricultural sectors.
With massive giga-projects like NEOM, the Red Sea Project, Qiddiya, and expanding MODON industrial cities, the demand for rugged, high-performance overhead distribution transformers has surged. Selecting a verified manufacturer with deep engineering expertise in high-ambient, dust-laden environments is critical for EPC contractors and utility procurement officers throughout the Arabian Peninsula.
Tailored to meet SEC 53-SDMS-01 and SASO/IEC standards, accommodating 60Hz frequency, specific vector groups (Dyn11), and dual primary voltage requirements.
Designed with a 45°C or 50°C winding temperature rise limit over a peak ambient temperature of 55°C, safeguarding against premature thermal aging.
Multi-layer polyurethane paint systems and hot-dip galvanized tanks withstand coastal saline mist along the Red Sea and Arabian Gulf coastlines.
Overcoming the triple threat of sandstorms, extreme solar irradiance, and high cyclic thermal stresses.
Features vacuum-filled, corrugated fin tanks without oil conservators, eliminating contact between insulating oil and atmospheric oxygen or moisture. This prevents oxidation and sludge build-up during intense seasonal shamal sandstorms.
Equipped with extended creepage porcelain or composite silicon bushings (up to 40mm/kV or higher upon request) to prevent flashovers caused by conductive dust, coastal salt crust, and heavy morning dew typical in Jeddah and Yanbu.
Thermal calculations incorporate continuous solar radiation exceeding 1,000 W/m². Premium low-loss oriented silicon steel cores and high-purity electrolytic copper windings reduce internal heat generation at peak load.
| Parameter / Specification | Saudi Arabia SEC Standard Criteria | Manufacturer Technical Offering | Project Application Value |
|---|---|---|---|
| Primary Rated Voltage | 20 kV / 13.8 kV / 33 kV (Dual options available) | 20kV ± 2×2.5% Off-Circuit Tap Changer (OCTC) | Seamless integration with both upgraded and legacy overhead lines |
| Frequency & Phases | 60 Hz, 3-Phase (or Single Phase rural) | 60 Hz optimized core design with low flux density | Zero overheating risk from frequency mismatches; high efficiency |
| Cooling Method | ONAN (Mineral Oil or Synthetic Ester) | Corrugated wall ONAN with natural convective flow | Maintenance-free cooling without motorized auxiliary fans |
| Maximum Ambient Temp | Up to 55 °C peak desert temperature | Winding temp rise ≤ 45°C / Top oil temp rise ≤ 40°C | Long service life exceeding 30 years without thermal de-rating |
| Surface Coating | Hot-Dip Galvanized + C5-M Heavy Epoxy | Multi-stage shot blasting + zinc-rich epoxy + PU topcoat | Exceptional resistance to saline humidity and sand abrasion |
| Standard Ratings (kVA) | 50, 100, 160, 250, 315, 500, 1000 kVA | Full range 25 kVA to 1600 kVA pole/platform mounting | Versatile sizing for agricultural, pump stations, and township grids |
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.
To support growing energy demands across the Middle East, Central Asia, and Africa, our factory operates specialized export-oriented production lines adhering to IEC 60076, ANSI/IEEE, and SEC procurement frameworks. With state-of-the-art winding machines, vacuum drying ovens, and computer-controlled test labs, each unit undergoes rigorous quality screening prior to international dispatch.
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.
For the Saudi Arabian market, our product engineering encompasses specialized 20kV and 33kV overhead pole-mounted units featuring hermetically sealed tanks, pressure relief valves, oil level gauges with electrical contacts, and bird-guard insulated bushings. These units are built to withstand severe diurnal temperature swings that cause cyclic thermal expansions in the transformer body.
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 20kV pole-mounted transformer dispatched for international projects undergoes a full battery of routine and type tests in accordance with IEC 60076, including insulation resistance measurement, winding resistance testing, voltage ratio and vector group verification, impedance and load loss testing, no-load loss and current measurement, separate source AC withstand voltage, and induced overvoltage withstand tests.
Proven reliability across diverse industrial sectors, remote desert operations, and smart urban communities.
Supplying continuous 400V/230V power to telemetry units, cathodic protection systems, motorized valves, and artificial lift pumps along cross-country pipeline corridors in the Eastern Province and Rub' al Khali.
Providing overhead distribution for worker villages, temporary construction sites, security checkpoints, and perimeter surveillance across NEOM, Qiddiya, and Diriyah Gate prior to underground grid completion.
Energizing deep-well submersible pumps, water treatment plants, and center-pivot irrigation circles in Al-Qassim, Tabuk, and Al-Jouf regions where long rural overhead lines require steady 20kV distribution.
Powering small-to-medium factories, logistics warehouses, cold storage facilities, and asphalt batching plants with stable stepping-down from the 20kV municipal feeder ring.
Interfacing auxiliary systems, inverters, and tracker motor drives in regional photovoltaic installations, accommodating harmonic loads and fluctuating solar feed-in.
Replacing deteriorating legacy 13.8kV units with high-efficiency 20kV pole-mounted units along remote mountainous highways in Asir, Jizan, and Najran regions.
Globally recognized management systems, safety credentials, and international export compliances.
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.
From high-voltage 220kV main substation transformers to 20kV/35kV pole-mounted and industrial distribution units.
Ensuring streamlined customs clearance, rigorous FAT protocols, and on-time port delivery across the Kingdom.
Comprehensive FOB/CIF logistics serving Jeddah Islamic Port (Western Province) and King Abdulaziz Port in Dammam (Eastern Province). Complete seaworthy export packaging with nitrogen blanket padding or hermetic sealing.
Every batch comes with comprehensive SASO compliance documentation, certified routine factory test certificates, structural pole-mounting bracket drawings, winding temperature rise curves, and bilingual installation manuals.
Tailored pole-mounting arrangements (single-pole cantilever, dual-pole H-frame, or platform mounting). Options for integrated dual-ratio voltage selector switches (13.8kV ↔ 20kV) allow dynamic redeployment across evolving SEC feeders.