Supported by our integrated industry & trade manufacturing chain, our company has completed customized production, full routine tests and export shipment of SFFZ-63000kVA 158/6.3/6.3kV three-phase oil-immersed on-load tap-changing all-copper power transformer. This dual-low-voltage main transformer is specially customized for Ukraine aging substation renovation project, replacing outdated high-loss equipment, solving core problems including insufficient grid capacity, severe voltage fluctuation and frequent low-temperature breakdowns. After commissioning, it is estimated to cut comprehensive line loss of the substation by over 13% annually, greatly improving power supply stability and capacity of regional grid, delivering high-quality Chinese power equipment to boost modernization of Ukraine transmission & distribution network.

 

I. Market Overview: Surging Demand for Ukraine Substation Renovation

Ukraine is pushing nationwide renovation of aging transmission substations in full swing. Massive high-voltage transformers put into service decades ago suffer aging, excessive power loss and insufficient capacity, failing to meet rising mixed power loads from industrial zones and residential areas. Local power authorities keep increasing investment in power infrastructure, driving steady growth of procurement demand for high-voltage main transformers and dual-low-voltage special transformer units.

According to public planning of Ukraine national power authority, annual demand for high-voltage main transformers for substation renovation projects will maintain high growth in the next five years. Meanwhile, Ukraine is aligning with European energy efficiency standards, setting strict requirements on power equipment loss, insulation performance and low-temperature resistance. Customized transformers with low loss, all-copper winding and wide temperature adaptability own broad market prospects.

Besides, Ukraine power grid is advancing intelligent upgrading, transformers equipped with remote monitoring and automatic voltage regulation become mandatory for new renovation projects, with annual growth rate of high-end power equipment market exceeding 12%.

 

II. SFFZ-63000kVA Dual-Low-Voltage Transformer: Eliminating Multiple Power Supply Bottlenecks of Old Substations

The target substation supplies power to surrounding industrial parks and residential quarters. Original single-low-voltage old transformers have obvious drawbacks such as messy load partition, large power outage range during maintenance and poor low-temperature startup performance, unable to satisfy separated power supply requirements after renovation.

Our customized SFFZ-63000kVA 158/6.3/6.3kV dual-low-voltage main transformer perfectly matches 158kV trunk transmission lines of Ukraine grid. Two independent 6.3kV low-voltage busbars separately supply industrial loads and residential power distribution circuits to realize partition load management. Maintenance on one circuit will not cut power of another area, fundamentally reducing production loss caused by blackout, making it the core power equipment for this substation upgrade.

III. Full Compliance & Customized Technical Optimization for Ukraine Standards

Our R&D team thoroughly studied Ukraine DSTU power specifications and IEC 60076 international standards. The whole transformer is fully qualified for UA TR mandatory conformity certification, meeting dual inspection requirements of local customs and power grid authority for customs clearance and grid connection.

Targeting frigid winters and sharp day-night temperature difference in Ukraine, we carried out multiple environmental optimization:

1. Insulation material upgraded to Class H (180℃ high temperature resistant), temperature rise parameters recalculated for -25℃ low-temperature working condition, stable operation within -25℃ ~ +40℃ wide temperature range;
2. Thickened steel plates for oil tank and radiators with low-temperature anti-corrosion coating, special cold-resistant sealing rubber and anti-freeze insulating oil are equipped to eliminate condensation and oil leakage under low temperature;
3. Partial discharge index and short-circuit withstand capacity exceed local basic standard by 20%, perfectly coping with ±10% severe voltage fluctuation in remote industrial zones of Ukraine.

Electrical parameters fully adapt to local grid: rated voltage 158kV±2×2.5% / 6.3kV / 6.3kV, 50Hz frequency, short-circuit impedance designed to match Ukraine grid short-circuit capacity. On-load tap changer supports real-time voltage adjustment under load to guarantee long-term safe and reliable operation.

IV. Efficient Project Execution: 3-Month On-Time Delivery & One-Stop Export Service

This project fully demonstrates our integrated industry-trade full-chain delivery capacity:

1. Fast production schedule: The whole cycle from drawing confirmation and contract signing to finished testing is controlled within 3 months, much shorter than over 4-month lead time of local Ukrainian manufacturers, matching tight construction schedule of substation renovation;
2. Full compliance certification support: Complete all routine tests including DC resistance, voltage ratio, insulation withstand, no-load & load loss, temperature rise and short-circuit resistance before delivery. We provide technical documents in Chinese, English and Ukrainian, assist clients in UA TR certification application to achieve zero-delay customs clearance;
3. Shockproof & moisture-proof export packaging: The transformer is fixed on reinforced steel base and wrapped with multi-layer waterproof & rust-proof film. Precision sensors are packed in independent moisture-proof wooden cases to withstand ocean shipping and long-distance overland transportation across Ukraine;
4. Full-cycle technical support: We provide online remote technical guidance after delivery, and offer special training on equipment operation & fault troubleshooting for local maintenance teams to reduce daily operation difficulty.

V. Long-Term Localized After-Sales & Operation Guarantee

To meet 24/7 non-stop operation demand of the substation, we build exclusive overseas after-sales service channel, providing long-term spare parts supply, remote fault diagnosis and technical upgrade guidance. The substation project manager commented: “This dual-low-voltage all-copper main transformer is perfectly designed for local grid conditions with outstanding energy-saving performance. Zoned power supply greatly reduces blackout risks, we will maintain long-term cooperation for future grid renovation projects.”

VI. Project Far-Reaching Significance: Chinese Intelligent Manufacturing Boosts Ukraine Grid Modernization

The successful delivery of this substation transformer effectively remedies power supply weaknesses of local aging grid, improves power reliability for industrial production and residents, and accelerates energy-saving & intelligent upgrading of Ukraine power network with low-loss, weather-resistant power equipment.

Relying on self-owned factory integrated advantages, we can customize full series of high-voltage dual-low-voltage main transformers and distribution transformers complying with grid standards and climate conditions of Eastern European countries, offering full-lifecycle services including site survey, customized production, export certification, cross-border logistics and lifelong technical support. We will keep deepening substation renovation market in Ukraine and Eastern Europe, delivering reliable Chinese power equipment to support energy infrastructure upgrading of Belt & Road countries.

Overseas Project Director stated: “We aim to become the long-term trusted power equipment partner for Eastern European grid renovation projects. The successful Ukraine substation project proves domestic high-voltage transformers can fully satisfy strict grid standards and frigid climate requirements of Eastern Europe, with world-class product quality and one-stop supporting services.”

Conclusion

From power supply bottlenecks of Ukraine old substations to stable operation of SFFZ-63000kVA all-copper dual-low-voltage main transformer, this cross-border cooperation is a typical example of Chinese intelligent manufacturing catering to Eastern European energy infrastructure demands. Leveraging independent R&D, production and foreign trade integration advantages, we keep supplying efficient, stable and compliant core power equipment for grid upgrading of Belt & Road Eastern European countries, delivering steady power momentum for regional industrialization and modernization.