Your Professional Oil Immersed Transformer Supplier
Perfect(Jiangsu) Electrical Group Co., Ltd. is located in Zhenjiang New District, Jiangsu Province. It is a National High-Tech Enterprise, a Jiangsu Province Key Software Enterprise, a Jiangsu Province Private Technology Enterprise, an AAA Credit Enterprise, and a Director Unit of the China Power Supply Association. The company is committed to providing smart power system solutions for large-scale industrial customers in sectors such as power generation, transportation, and new energy.
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![Single Phase Pole Mounted Transformer]()
Single Phase Pole Mounted TransformerEasy to install, wonderful appearance.
No leakage during the whole life cycle.
Low noise, small size, and light weight.
Wound core structure, with lower no-load loss. -
![10-35KV Oil Immersed Distribution Transformer]()
10-35KV Oil Immersed Distribution TransformerBrand: PFK
Type: Oil Immersed Transformer
Phase: Three Phase
Vector Group: Dyn11 / Yyn0
Model: S Series
Rated High Voltage: 10-35 kV
Rated Low... -
![35KV-110KV Oil Immersed Power Transformer]()
35KV-110KV Oil Immersed Power TransformerBrand: PFK
Type: Oil Immersed Transformer
Phase: Three Phase
Vector Group: Yd11, YNd11
Model: SZ Series
Rated High Voltage: 35（38.5, 37.5, 36.5, 33）kV...
Why choose us
Sales Market
Our products are exported to Europe, the Americas, the Middle East, Southeast Asia, and other regions, where they have received widespread recognition and praise from customers.
Certifications
We have obtained ISO 9001 Quality Management System certification, ISO 14001 Environmental Management System certification, ISO 27001 Information Security Management System certification, and OHSAS 18001 Occupational Health and Safety Management System certification. Our products have passed multiple standards certifications, including GB, IEC, and CE. The company holds numerous invention patents, more than 60 utility model patents, and over 10 software copyrights.
Service
We provide on-site installation, commissioning, and maintenance services for busway systems, switchgear, and transformers, ensuring stable and reliable operation of each system. Our professional teams are experienced in handling complex site conditions and provide comprehensive support throughout the full life cycle of customers’ power distribution equipment.
Key Advantages of Oil Immersed Transformers
Superior Thermal Performance
Oil has a higher heat capacity and thermal conductivity compared to air or resin, allowing for efficient cooling even under heavy loads.
01
Long Service Life
With proper maintenance and oil monitoring, these transformers often operate reliably for 30 years or more.
02
High Insulation Strength
Oil provides strong dielectric insulation, preventing flashovers and maintaining stable voltage levels under varying operating conditions.
03
Cost-Effectiveness
Oil immersed designs offer lower upfront and lifecycle costs compared to equivalent dry-type units.
04
Flexibility in Power Ratings
They are suitable for small distribution units (100 kVA) up to high-voltage grid transformers exceeding 250 MVA.
05
There are several types of oil-filled transformers. Here are a few of the most common below.
Single-Phase transformers use one pair of windings. It’s used in lower-load situations, such as rural areas.
Three-Phase transformers are made up of three pairs of windings. The windings typically go around a core sectioned into three parts. Three-phase transformers are used in higher-load areas and can supply three circuits with energy.
Power transformers are designed to handle much higher loads. They can step voltages up or down and transmit a current from one place to another.
Distribution transformers transmit lower voltages from the electrical grid to homes and businesses. They are much smaller than power transformers.
Pole-Mounted transformers are connected to an electrical pole.
Pad-Mounted transformers are mounted to a concrete pad on the ground.
Working Principles
Heat Transfer
Oil absorbs heat from windings and the core.
Natural/Forced Cooling
Passive convection or fan-assisted cooling.
Insulation
Oil prevents arcing and voltage breakdown between conductors.
Common Standards
IEC 60076 – Power Transformers
IS 2026 – Indian Standard for Power Transformers
IEEE C57.12 – U.S. Standard for Oil-Filled Units
Our Certificate
FAQ
We are one of the most professional oil immersed transformer manufacturers and suppliers in China, also support customized service. Please rest assured to buy high quality oil immersed transformer made in China here from our factory. Welcome to view our website for more information.
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