PUTAI's oil-immersed transformers deliver reliable power transformation for utility and industrial applications, featuring robust insulation systems and efficient heat dissipation.

Insulation Component
ALL Inflatable Cabinet Bushing Series Contact Box Wall Bushing Sensors Embedded Poles Epoxy Insulator Elbow Plates Series
Switchgear
ALL Vacuum Circuit Breaker (VCB) Load Switch Disconnecting Switch Earthing Switch / Grounding Switch Switchgear Outdoor Vacuum Auto Recloser
Protection Equipment
ALL Fuses Surge Arresters
Transformer
ALL Distribution Transformer Dry Type Transformer Oil-Immersed Transformer
Cable Accessories
ALL Cold Shrink Cable Accessories Heat Shrink Cable Accessories High Voltage Cable Plug and Socket Connector Explosion proof Joint Enclosure Cable Fusion Splice Cable Branch Box
35kv Three Phase Oil Distribution Transformer
  • Type:35kV grade S11,S13
10kv Three Phase Oil Distribution Transformer
  • Type:10KV grade S20-M series
CSP Completely Self Protection Transformer
  • Type:CSP
CRGO/AMDT Single Phase Pole Transformer
  • Type:CRGO/AMDT
THREE PHASE Pad-mounted Transformer
  • Type:THREE PHASE
35kv Photovoltaic Transformer
  • Rated voltage:40.5
Characteristics of Oil-Immersed Transformer
Rated Voltage
10kV-35kV (Primary), 0.4kV-10kV (Secondary)
Capacity
5kVA-5000kVA
No-load Loss
0.1kW-3.5kW (Amorphous:0.1-1kW)
Load Loss
1.2kW-30kW
Cooling Method
63kA - 125kA
Standards
IEEE C57.12.00/ANSI/GB/T
Materials
6 global material development partners
Detection
100% internal dielectric and thermal performance testing
Compliance
Designed to meet IEC/ANSI standards
Traceability
Complete batch traceability and leading technical support
Why Choose Us
Strong weathering resistance
adapt to extreme environments such as coastal, high pollution, high temperature and high humidity.
High reliability
Reduces the risk of grid failures and reduces maintenance costs.
International Standard Adaptation
Meet the requirements of power equipment in the European, Middle East and Southeast Asian markets.
FAQ
What is an Oil-Immersed Transformer?
It uses insulating oil for cooling and insulation, providing excellent heat dissipation and stable performance.
What are the main advantages of Oil-Immersed Transformers?
They offer high efficiency, robust performance, and are well-suited for high-power applications.
How is the performance of Oil-Immersed Transformers maintained?
Regular oil testing, monitoring of oil levels and temperature, and preventive maintenance are essential.
What safety features are integrated in Oil-Immersed Transformers?
They include oil containment systems, leak detection, and emergency shutdown mechanisms to ensure safe operation.
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Service & Support
Our certification team consists of 85+ engineers with more than 20 years of professional experience
24/7 Service. Average emergency response time is limited to less than 12 hours
Suitable for substations, industrial power grids, new energy projects and other demanding scenarios
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