Zisheng ELECTRIC's 35kV and 46kV power(electrical) transformer complies with international standards such as IEC and ANSI, and features high efficiency, low loss, and strong insulation. This product is widely used in power grid main transformers, power plants, industrial and mining enterprises, and large infrastructure projects. Key features include mineral oil or FR3 natural ester insulation (ONAN/ONAF/ODAF cooling options), copper or aluminum windings, primary voltages 35kV or 46kV (grounded wye or delta, with dual-voltage configurations), secondary voltages 6.6kV, 11kV, 13.8kV, 33kV, or custom (e.g., 13.8kV/480V or 35kV/11kV), BIL ratings 200–650kV depending on voltage class, impedance typically 8–12%, ±2×2.5% or ±5% off-load tap changer (OLTC optional), conservator tank or sealed tank design, Buchholz relay, pressure relief device, oil temperature gauges, winding temperature indicators, and ANSI 61 gray or custom tank finish.
The 35kV / 46kV Power Transformer is a high-voltage power conversion solution designed for transmission and distribution networks, industrial power systems, and large-scale energy projects. It is engineered to provide safe, stable, and efficient voltage transformation for utilities, renewable energy plants, mining operations, oil & gas facilities, and major infrastructure projects.
Designed according to international power transformer standards, this transformer combines advanced electromagnetic design, high-quality materials, and strict manufacturing processes to achieve excellent efficiency, reliable operation, and long service life under demanding operating conditions.
The transformer adopts a high-quality grain-oriented silicon steel core with a multi-step lap joint structure. This optimized magnetic circuit design effectively reduces magnetic flux leakage, no-load losses, and operating noise.
The high-performance core ensures:
The winding system is manufactured using high-conductivity copper or aluminum conductors with advanced winding technology.
The optimized winding structure provides:
The transformer winding design can be customized according to different voltage levels, capacity requirements, and application conditions.
The 35kV / 46kV power transformer uses a reliable insulation system with high-quality transformer oil as the cooling and insulation medium.
The optimized cooling structure provides:
Cooling methods include:
Additional cooling configurations can be provided for special applications.
The transformer tank adopts a robust welded steel structure designed to withstand transportation stress, internal pressure changes, and long-term outdoor operation.
Features include:
The transformer can be equipped with accessories such as:
Every 35kV / 46kV Power Transformer is manufactured through strict production procedures, including:
Before shipment, each transformer undergoes comprehensive testing, including:
This ensures reliable operation and compliance with international standards.
Zisheng are a professional 19+ years manufacturer in producing Oil-Immersed Transformers, Compact Substation, Pad Mounted Transformers, Pole Mounted Transformers and Dry Type Transformers. We own the certificates of ISO/CE/IEC 60076 and TUV Rheinland.
Transformers undergo rigorous FAT and type testing, support voltage/capacity customization. Welcome to consult for Catalog and Product. you can contact us at email [email protected].
| Rated Power | 5000-400000kVA |
| Rating Primary Voltage | 35kV, 34.5kV, 33kV, 46kV |
| Secondary Voltage | 6.6kV 10kV 13.8kV Customized |
| Frequency | 50/60Hz |
| Vector Group | Dyn11, YD11, YNd11 |
| Winding Material | Aluminum/Copper |
| Efficiency | As IEEE, CAS Std or Customized |
| Impedance Voltage | As IEC |
| Altitude | ≤1,000m or Customized |
| Enclosure material | Mid Steel |
| HV Bushing |
| LV Bushing |
| OLTC/NLTC |
| Lifting hook for complete transformer |
| Name plate |
| Oil temperature |
| Winding temperature |
| Radiators |
| Oil level |
| Pressure relief valve |
| CT |
The 35kV / 46kV Power Transformer is widely used in high-voltage power transmission and distribution systems, providing reliable voltage conversion and stable energy supply for large-scale power projects.
Used in regional substations and distribution networks to step down high voltage electricity and deliver reliable power to residential, commercial, and industrial users.
Applied in solar farms, wind power plants, and energy storage systems for voltage boosting, grid connection, and efficient renewable energy transmission.
Provides stable power supply for large industrial facilities, including:
Supporting heavy electrical loads and continuous production operations.
Designed for demanding environments, supplying reliable power for:
Used in large-scale infrastructure systems such as:
Suitable for conventional and renewable power plants, supporting efficient power transmission from generation units to the grid.
The 35kV / 46kV Power Transformer is mainly used for high-voltage power transmission and distribution systems, including utility substations, industrial power plants, renewable energy projects, mining facilities, and large infrastructure projects.
It provides high efficiency, reliable voltage conversion, strong overload capability, excellent short-circuit resistance, and long service life, making it suitable for continuous operation in demanding power systems.
The voltage ratio can be customized according to project requirements, such as 35kV/10kV, 35kV/0.4kV, 46kV/13.8kV, or other customized voltage levels.
The standard cooling methods include:
Additional cooling systems can be customized according to capacity and operating conditions.
Yes. The transformer can be designed for outdoor installation and customized for harsh conditions such as high temperature, humidity, dust, coastal environments, and industrial areas.
The transformer can be equipped with protection and monitoring accessories, including:
Each transformer undergoes strict factory testing, including:
Yes. We provide customized solutions including:
The transformer is designed and manufactured according to international standards such as IEC 60076, ensuring safety, reliability, and stable performance.
With proper installation, operation, and maintenance, the transformer can provide reliable service for 25–30 years or more.
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