
S11/S13 Oil-Immersed Distribution Transformer
- Voltage: 10kV / 35kV
- Capacity: 30 – 40,000 kVA
- Standards: IEC 60076, GB/T 1094
- Cooling: ONAN / ONAF

From 10kV distribution to 35kV power transmission — professional transformer solutions trusted across 30+ countries worldwide.
From oil-immersed power transformers to complete prefabricated substations — all compliant with IEC, IEEE, GB, and ANSI standards.





Explore our complete range including American-style substations, cable junction boxes, and low-voltage panels.
View All ProductsTailored electrical solutions for utilities, renewable energy, industrial plants, and commercial infrastructure.
Distribution and power transformers for national grid infrastructure, meeting IEC/IEEE standards worldwide.
Learn more →Solar and wind farm step-up transformers designed for harsh outdoor environments with high efficiency.
Learn more →Heavy-duty transformers for manufacturing, mining, and petrochemical facilities with enhanced durability.
Learn more →Compact dry-type transformers and substations for office complexes, shopping centers, and urban infrastructure.
Learn more →Ultra-reliable transformers for mission-critical data center power infrastructure with redundancy support.
Learn more →Complete power solutions for international EPC projects. Multi-standard certification and global logistics.
Learn more →Comprehensive quality management system verified by international certification bodies.
IEC, IEEE, ANSI, GB, CSA — we manufacture to the standard your market requires.
State-of-the-art CNC winding, vacuum drying, and automated testing facilities.
Multi-lingual sales engineers providing end-to-end support from quotation to commissioning.
Get a customized quotation within 24 hours. Our engineering team will design the optimal solution for your requirements.
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Industrial Park, Jiangsu Province, China 226600
sales@voltbridge.com
+86 513 8765 4321
+86 138 1234 5678