Hengfengyou Electric Delivers 30 Units of SG Dry-Type Transformers: Customized Power Distribution Solutions Accelerate Green Upgrades in Zambia's Mining and Industrial Sectors

Writer： Hengfeng you electric Time：2026-06-05 views：times

Driven by Zambia's "Electricity for All by 2030" strategic plan and the green industrial transformation of the Copperbelt mining region, stable and efficient low-voltage power distribution infrastructure has become a critical pillar for industrial upgrading. Recently, Hengfengyou Electric, a global expert in power distribution, announced the successful delivery of 30 units of SG-25KVA-550/380V three-phase dry-type transformers to key industrial and mining support projects in Zambia.

The smooth commissioning of this batch of high-performance dry-type transformers marks another successful implementation of China's customized power distribution solutions in the Sub-Saharan African market, creating a solid power foundation for local harsh working conditions characterized by high energy consumption, heavy dust, and severe voltage fluctuations.

I. Precise Breakthrough: Directly Addressing the Power Pain Points of Zambia's Industry and Mining

As Africa's renowned "Land of Copper," Zambia has been fully advancing the modernization and upgrading of mine refining and local manufacturing in recent years. However, the local aging grid infrastructure and extreme natural environments (high temperatures and heavy dust during the dry season) pose severe challenges to power equipment.

In traditional power distribution systems, 550V is typically the dedicated voltage level for mines and specialized industrial automation equipment, while the standard operating voltage for general non-standard equipment is 380V. In actual operations, many factories lack precise voltage conversion equipment, causing imported production lines to run below full capacity or even experience frequent shutdowns due to voltage fluctuations.

Bella, Head of the African Market at Hengfengyou Electric (hfy@hengfengyou.com), noted when reviewing the project communication: "The core pain points of our Zambian customers were highly focused: first, the demand for non-standard voltage conversion, which requires stepping down 550V to 380V accurately and stably; second, environmental adaptability. The mining areas are dusty and hot all year round. Traditional oil-immersed transformers involve tedious maintenance, leakage risks, and fire hazards. Customers urgently needed a high-protection, zero-pollution, plug-and-play low-voltage power distribution solution."

In response to this combined pain point of 'heavy dust + non-standard voltage + high reliability,' the technical team of Hengfengyou Electric conducted deep research into the grid connection standards of the Zambia Electricity Supply Corporation (ZESCO) and local industrial working conditions. They tailor-made this batch of SG-25KVA three-phase dry-type transformers, achieving a dual breakthrough in power supply reliability and on-site adaptability.

II. Hardcore Technology: A "Dry-Type Solution" Featuring Low Losses and High Protection

As the "heart" of industrial power distribution, this batch of SG-25KVA-550/380V dry-type transformers exported to Zambia underwent multiple customized upgrades in core technology and material selection, perfectly demonstrating the hardcore technical strengths of Hengfengyou Electric:

Premium Insulation and Explosion-Proof Safety: Utilizing Class H (180°C) insulation materials paired with high-mechanical-strength all-copper windings, the equipment exhibits exceptional heat resistance and short-circuit impact resistance. The dry-type design eliminates transformer oil leakage and fire hazards, making it ideal for enclosed workshops or mine distribution rooms with strict safety requirements.

Precise Conversion of Non-Standard Voltage: The specially designed 550V connection and 380V output not only satisfy special voltage matching but also integrate voltage compensation technology into the internal design. This effectively resists frequent grid-side voltage fluctuations in Zambia (with a fluctuation range of ±10%), ensuring that sensitive downstream digital control systems do not lose power due to transient voltage abnormalities.

Deep Adaptation to Harsh Environments: To address the high temperatures (above 45°C) in parts of Zambia and the heavy dust in mining areas, these units are equipped with customized enclosures, achieving a protection rating of IP54. The shell surface utilizes a C5-M high-anti-corrosion coating, and the structure features enhanced thermal convection air ducts to ensure controllable temperature rise during long-term, full-load operations.

In addition, each unit reserves intelligent temperature monitoring sensor interfaces, allowing linkage with the factory's main control system to truly ensure the power grid is "visible and controllable."

III. Quality Compliance and Fast Delivery: Breaking Through Cross-Border Logistics Barriers

In the field of international engineering and equipment export, compliance and delivery cycles often determine the success of a project. Zambia enforces a strict entry mechanism for imported power equipment, requiring full compliance with ZABS (Zambia Bureau of Standards) + PVoC (Pre-Export Verification of Conformity) certification.

Hengfengyou Electric implements strict quality management throughout the entire production process. Before leaving the factory, all 30 units of SG-25KVA transformers passed routine tests, including DC resistance, voltage ratio, insulation withstand voltage, and no-load/load loss tests. The company collaborated with internationally renowned inspection institutions (such as SGS / BV) for on-site witnessing and issued PVoC certificates, ensuring "zero delay" during customs clearance at Zambian ports.

In terms of logistics delivery, considering the bumps of ocean freight and long-distance land transportation in inland Africa, Hengfengyou utilized export-grade fully enclosed fumigation-free wooden box packaging and installed three-dimensional impact recorders inside to monitor transportation vibrations in real time. From contract signing and technical drawing confirmation to the arrival of all 30 non-standard customized units at the project site in Zambia, the entire chain took only 60 days. This shortened the industry average cycle by approximately 30%, setting a new efficiency record for the delivery of complete sets of low-voltage distribution equipment between China and Zambia.

IV. Solution Summary and Full Life-Cycle Benefits

The successful commissioning of these 30 units of SG-25KVA-550/380V dry-type transformers has not only solved the urgent need for equipment interconnection and non-standard voltage distribution for local industrial customers, but its high-efficiency design has also helped factories reduce low-voltage distribution network losses by about 15%. This strongly supports Zambia's ambitious goal of "energy-saving upgrades" for high-energy-consuming industries.

Jack, Sales Director of Hengfengyou Electric (hfy@hengfengyou.com), stated: "The successful delivery of these 30 SG series dry-type transformers further consolidates Hengfengyou's leading position in the Southern African power transformer market. We do not simply provide standard hardware; we offer a one-stop integrated solution from design, manufacturing, certification, and logistics to Site Acceptance Testing (SAT) and a 5-year warranty based on our customers' specific industrial working conditions. In the future, we will continue to deeply cultivate the African power grid, utilizing high-standard, highly adaptable Chinese solutions to drive mutual value creation between China and Africa."