Phase: Single Service
Voltage:≤34.5.5 kV
Rated Capacity: ≤500 kVA
Frequency: 50/60Hz
Winding Material: Copper Iron Core
Material: CRGO
Insulation Class: A
Cooling Type: ONAN
Manufacturing Standard: GB1094.1/IEC60076

With Putuo Hermetic Sing-phase Pole Mounted Transformers, you obtain not only the transformer but also an Energy Partner for your business

  • Excellent short-circuit resistance
  • Satisfies the various load conditions required by customers
  • Low-loss step lap laminated core
  • Uses latest insulation material with high short-circuit strength to realize high thermal capacity
  • Cold steel sheet is used for radiating pipe to ensure a sufficient cooling effect and aesthetic exterior
  • Compact, light, and low-noise transformer with standard efficiency and noise level which can be easily installed even in a small indoor or outdoor area

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 Sing-phase Pole MountedTransformers are able to reach 3150 kVA and operating voltages of up to 40.5 kV. This product offers individual solutions for satisfying requirements related to types of operation, low noise and low losses, connection technology, type of cooling, transportation and so on.

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:

Our values: All this process is certified under the strictest quality standards

Customized solutions: Meet customer’s various demands

Design options

  • Class A: Two fully insulated high voltage bushings, suitable for application on either wye or delta distribution systems. Single-position pole mounting in accordance with latest ANSI standards.
  • Class B-1: Two fully insulated high voltage bushings, one arrester, two protective links and external breaker handle. Normally applied on solidly grounded systems.
  • Class B-2: One fully insulated high voltage bushing, suitable only for application on solidly grounded distribution systems. Single-position pole mounting in accordance with latest ANSI standards.
  • Class B-3: Same as Class B-2 except with two-position mounting.

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

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.