Three-phase Pole Mounted Power Transformer

Three-phase Pole Mounted Power Transformer overview

  A three-phase oil immersed transformer installed on a pole is a type of transformer with a capacity generally below 500kVA.
  - The actual measurement of the product is better than GB and IEC standards
  - More than 50 countries and regions around the world run verification of high reliability
  - It is mainly used in distribution network, power supply and distribution system of industrial and mining enterprises and civil buildings
  - Executive standard: IEC 60076 series, IEC 6013, IEC 60214-1, IEC 60296;GB1094 series, GB/T6451-2015, GB/T7597-2007, etc
 

 

Three-phase Pole Mounted Power Transformer advantage

-High voltage copper wire winding technology to improve lightning resistance performance

-Low voltage foil winding technology, high-quality A-E grade insulation material insulation

-Low magnetic leakage, high mechanical strength, and strong short-circuit resistance

-The material of the iron core is high-quality cold-rolled grain oriented silicon steel sheets with mineral oxide insulation (from Baosteel and Wuhan Iron and Steel Group in China)

-By controlling the process of cutting and stacking silicon steel sheets, the loss level, no-load current, and noise are minimized

Three-phase Pole Mounted Power Transformer parameters

  - Input voltage: 6KV、6.6kv、10kv、11kv、15kv、20kv

  - Output voltage: 0.4kV 0.415 kv 0.420kv 0.430kv 0.440kv、0.480kv
  - Capacity: 25-500 kva
  - Frequency: 50/60 HZ
  - Remark: voltage, capacity, frequency, connection group and loss can be customized according to customer requirements

Three-phase Pole Mounted Power Transformer Case show

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Three-phase Pole Mounted Power Transformer FAQ

1. 
   What is a three-phase pole-mounted power transformer?
   It is an outdoor electrical transformer mounted on utility poles, designed to step down high-voltage electricity to lower voltages suitable for distribution to residential or commercial areas.

2. What are the common applications of pole-mounted transformers?
   They are widely used in rural and urban power distribution networks to supply electricity to homes, businesses, and small industries.

3. What voltage ratings are typical for pole-mounted transformers?
   Common primary voltages range from 11 kV to 33 kV, while secondary voltages are typically 400/230 V for three-phase distribution.

4. How is a pole-mounted transformer cooled?
   Most pole-mounted transformers use oil-immersed natural cooling (ONAN) for heat dissipation.

5. What safety features are included in pole-mounted transformers?
   They often include protective devices such as surge arresters, pressure relief valves, and fault indicators to ensure safe operation.

6. How long do pole-mounted transformers typically last?
   With proper maintenance, they can operate efficiently for 25 to 40 years, depending on load conditions and environmental factors.

7. What maintenance is required for pole-mounted transformers?
   Regular inspections, oil testing, and checking for leaks or corrosion are essential to ensure reliability and longevity.

8. Can pole-mounted transformers be used in harsh weather conditions?
   Yes, they are designed to withstand rain, wind, and moderate temperature variations, but extreme conditions may require additional protection.

9. What are the advantages of pole-mounted transformers over pad-mounted transformers?
   They save ground space, reduce vandalism risks, and are easier to install in areas with limited land availability.

10. How is a faulty pole-mounted transformer replaced?
    Utility crews use specialized equipment like bucket trucks to safely remove the old transformer and install a new one without prolonged power interruptions.