São José do Rio Pardo,  São Paulo 
  • Booth: 401

Vision is to become one of the leading suppliers worldwide.

RIOTRAFO provides innovative solutions in the segment of distribution transformers in the classes 15kV, 25kV and 36.2kV, fulfilling all market demands, and is committed to offering constant innovation, the best linear and rotary tap changers. Its vision to become one of the leading suppliers in the world market to be a benchmark for excellence in Tap Changers (switchers).

Brands: Rotary tap changers, linear tap changers, compact linear tap changers, distribution transformers


  • Rotary Tap Changer
    De-energised tap changers designed for use in a distribution transformer filled with insulating liquid up to 36,2kV and up to 60 Amperes....


    External operation mode;

    Single-phase, two-phase or three-phase;

    3-4-5-6-7 Positions or taps;

    Locking by padlock or security seal*;

    Double contacts closure;

    In Portuguese, Spanish or English.


    High Voltage class : 15 - 25 - 36kV;

    BIL : 170kV - 200kV;

    Current : 40 - 60A;

    Frequency : 50 - 60Hz;

    Applied Voltage : 70kV.

    Standard Tests NBR 5440;

    - Standard Tests IEC 60214;

    Mechanical endurance test (Three hundred) continuous operations under a temperature of 75 ° C, under a pressure of 2kgf/cmÇ;

    - External itens accelerated weathering xenon arc lamps – ISO 4892-2:2006;

    - External itens charpy impact strength – ISO 179-1/1eA:2010.

    Other tests;

    Accelerated corrosion test due to exposure to Neutral Salt Spray – ASTM B 117/2016 – ISO 9227/2012;

    - Abrasion resistance test by Sand Fall - ASTM D 968/2016.

 Additional Info

Is your company certified women-owned?
Is your company certified minority-owned?
Are you interested in exporting your product / service internationally? If so, please indicate below (check all that apply).
Angola, Argentina, Australia, Brazil, Canada, China, Ethiopia, France, Iceland, India, Japan, Kenya, Mexico, Nigeria, Pakistan, Philippines, Russia, Saudi Arabia, Singapore, Thailand, Ukraine

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For questions regarding the DistribuTECH conference program please contact:  
Debbi Wells, CMP
Conference  Manager
Direct: 918-832-9265

For questions regarding the DistribuTECH exhibit services please contact:  
Nichole Pittman
Exhibit Service Manager
Direct: 918-832-9227

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