• Phase: 3
  • Wnding: Dual
  • Service Voltage:≤40.5 kV
  • Rated Capacity: ≤2500 kVA
  • Frequency: 50/60Hz
  • Winding Material: Copper/Aluminum
  • Iron Core Material: CRGO
  • Cooling Type: ONAN/ ONAF
  • Origin: China

Whychoosepad mounted transformers

  • Compact structure
  • Strong complete set
  • Environmentally-friendly production
  • Safe and reliable operation
  • Easy maintenance
  • Beautiful appearance
  • Reliable prevention of burglary

Latest developments: Expandingthe portfolio

Putuo Electric introduces FreeCombination™Technologythat combines various types of transformer production into one united mechanism to improve production efficiency, stabilize product quality, and enhance product performance.

All these transformers can be designed, customized, and supplied with a wide variety of accessories, as required.

Putuo pad mounted transformers are able to reach 2500 kVA and operating voltages of up to 40.5 kV. This product is a kind of new type complete set equipment which could achieve energy saving and cost reducing in urban and rural substation construction and transformation.

Reliable solutions for all applications

Putuo Elecric has expertise in producing transformers for optimum space utilization, special requirements, and the most demanding conditions, has become one of the global leaders in power technologies, providing the broadest experience in all applications, ranges, and customized projects:

  • Industrial & mining enterprises
  • Resident sub district
  • Docks
  • Parks
  • Streets
  • Public places
  • Residential areas
  • Ring power supply
  • Terminal power supply
  • Railway station
  • Road electricity supply

Our technology: What makes us different?

Putuo Electric uses the most advanced production technologies and the most demanding control systems to guarantee the highest product quality and total product reliability.

  • High efficiency design
  • Special ambient design
  • Low sound level design
  • 50 Hz & 60 Hz  design
  • K-factor rating
  • Overload design

Optional accessries

Our values: Main circuit schemes can be custom-designed according to customer requirement

Testing and logistics: Make sure every product reaches our customer with high quality

All transformers are manufactured to the most stringent quality control standards in order to guarantee the full reliability of the product

Routine test

All transformers are 100% routine tested:
• Voltage ratio measurement and check of phase displacement
• Induced over-voltage withstand test
• Partial discharge measurements
• No load loss and current measurement
• Measurements of windings resistances
• Load loss and short circuit impedance measurements
• Leak test


Type tests

Performed according to customer requirements:
• Temperature rise test
• Lightning impulse test

Special tests

Performed according to customer requirements:
• Measuring zero-sequence impedance
• Noise level test
• Measuring insulation resistance
• Measuring of harmonics of the no-load current
• Measuring of the parallel capacity of windings and tag ∂
• Anti-corrosion protection checking
• Short circuit test & Vibration test

Logistics and services

Once the transformer is successfully tested, the product is ready for shipping, either by truck or sea freight.

As a manufacturer, Putuo Electric understands the relevance of what logistics represents to the customers. This is one of the reasons why Putuo Electric has developed a large and qualified network of suppliers with the same values and targets.

Putuo Electric takes care of all official documentation, depending on the final destination and delivery terms.

Different packaging for special applications or conditions

• Standard packaging
• Crate packaging
• Sea-worthy packaging
Putuo Electric has a long experience in arranging special transport, as and when it is required.

In addition, Putuo Electric’s global presence ensures the best, local, and after-sales service.

Working with Putuo Electric, you have access to a worldwide service with a full range of products and solutions, access to production facilities using the most up to date technologies that provides the highest quality for standard and specially made products and solutions. Our warranty provides “Life-long & 7/24” quality and service.