Behind Repeat Purchases from Longtime Customers | Tian’an’s 132kV Main Transformer Powers Zambia’s Grid Upgrade
In early September, the SFZ‑20000/132kV high-voltage main transformer (power transformer) successfully completed its full set of factory acceptance tests and was shipped from Ningbo to Zambia for deployment in a key local grid upgrade project. This order was placed by a long-standing strategic customer of Tian’an, who has once again purchased a high-voltage main transformer—underscoring their strong confidence in the equipment’s real-world performance and the company’s end-to-end fulfillment services.
The African power grid project tests the equipment’s ability to perform under real‑world operating conditions. In Zambia, where diurnal temperature swings are significant and dusty conditions are prevalent, the grid also experiences pronounced load fluctuations and frequent transient voltage surges, placing stringent demands on the main transformers’ weather resistance, impact resilience, and operational efficiency. The transformers delivered this time have a rated capacity of 20,000 kVA and a voltage rating of 132 kV, serving to step up or step down voltage and transmit electrical energy within the region, thereby ensuring stable power supply for industrial and municipal users in the area. 
Targeted operating-condition optimization, tailored to meet the actual on-site requirements in Africa.
This transformer is not a standard, off-the-shelf product; it has been specifically optimized to address the unique challenges on site in Zambia.
- Energy conservation and consumption reduction : By employing low-loss magnetic cores and optimized winding processes, no-load losses and operating noise are reduced, thereby controlling the equipment’s energy consumption costs over its entire lifecycle.
- Resisting grid disturbances : Strengthen insulation and short-circuit resistance, enhance voltage surge withstand capability, and reduce the risk of fault-induced outages caused by grid fluctuations;
- Outdoor Weather-Resistant Protection : Fully sealed, corrosion‑resistant fuel tank with precision weld seam treatment, offering rust‑proof, leak‑proof, and moisture‑proof performance; suitable for outdoor environments exposed to windblown sand, intense sunlight, and high humidity.
- On-load voltage regulation function : Supports on-load voltage regulation to handle significant load fluctuations and ensure stable power quality at the output;
- Adapted to overseas operations and maintenance conditions The unit features a compact structure and standardized components, simplifying on-site installation and commissioning while helping to address the challenge of insufficient manpower for overseas operations and maintenance.
Standardized compliance management ensures the safe deployment of equipment overseas.
Equipment manufacturing strictly adheres to GB standards, IEC standards, and project-specific technical specifications. Prior to shipment, a comprehensive suite of tests—including dielectric strength, partial discharge, loss, insulation, and mechanical performance—is conducted; only units that pass these tests are dispatched. For long‑distance oceanic transport, reinforced packaging and specialized protective measures against moisture, vibration, and corrosion are implemented, complemented by end-to-end logistics tracking to ensure the equipment arrives at the project site in pristine condition.
Having cultivated the African market for many years, Tian’an fully understands that earning customers’ trust hinges on the long-term, reliable performance of its equipment. Accordingly, Tian’an does not stop at simply supplying machinery; instead, it tackles the real‑world challenges of overseas projects head‑on, integrating operational‑condition adaptation, factory‑level quality control, ocean‑transport protection, and user‑friendly maintenance design into a comprehensive delivery solution.
The timely delivery of this 132 kV main transformer once again underscores the trust our overseas customers place in us. Ningbo Tian’an will remain committed to application‑driven R&D and manufacturing of highly reliable, energy‑efficient, and easily maintainable power equipment, leveraging product excellence and a strong track record of on‑time delivery to continuously support the modernization of Africa’s power grids.
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Address: No. 816 Jinghua Road, Ningbo National High-tech Zone, Zhejiang Province
Phone: +86-0574-87916011 (International)
E-mail: export@tianandl.com
Phone: +86-0574-87900000 (Domestic)
Email: sales@tianandl.com
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