Tests on Transformers

Power up to 500 kVA

Our laboratories can perform tests on transformers up to 500 kVA.

Transformador

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Facilities for tests realization

Tests list

  1. Measurement of winding resistance
  2. Measurement of voltage ratio and check of phase displacement
  3. Measurement of short-circuit impedance and load loss
  4. Measurement of no-load loss and current
  5. Applied voltage test
  6. Induced voltage test with partial discharge measurement
  7. Test of temperature rise
  8. Measurement of insulation resistance
  9. Full wave lightning impulse test for the line terminals

Besides the tests specified by the standard, the laboratory can perform on-demand tests. The demands will be analyzed according to the technical structure of the laboratory.

FAQ

For labeling purposes, it’s considered INMETRO ordinance n°104, of March 22th, 2013. This ordinance refers to the tests described by the family of standards ABNT NBR 5356:2007, revised in 2010.

 

The transformers must be in accordance with ALL the requirements determined by INMETRO ordinance n° 104, of 2013. This ordinance refers to the tests described by the family of standards ABNT NBR 5356:2007, corrected in 2010.

 

The tests reports issued by INRI are available on an electronic platform to verify its authenticity. This platform can be accessed through: www.ufsm.br/labensaios

The document access is restricted to who possess the alphanumeric key of 16 digits. That key is provided only to the customer by email at the end of the test. To check how the system works, access the model report 8888.8888.8888.8888

The time is varying according to the complexity of the test and handling of the item to be tested. That depends on the power of the transformer, phase (single-phase or three-phase) and number of tests. To obtain this information, request a budget informing all the technical data of the transformers to be tested.

 

The amount charged is varying according to the complexity and time required to perform the tests. Those factors are quantified in function of the rated power of the transformer, nominal tensions and type of connection (single-phase or three-phase). To obtain this information, request a budget informing all the technical data of the transformers to be tested. It is suggested that customers send the datasheet of the equipment.

 

After the budget request, a payment of 50% of the value of the proposal must be made for the tests be reserved in the laboratory agenda.

 

The customer is responsible for the formalities to move the samples from their origin place until the laboratory and vice and verse. The laboratory is responsible only for the opening and packaging of the samples. All the costs for transportation of the samples are from customer responsibility and it is not including on the proposal provided by INRI.

 

The transformers must to be send by shipping company or post offices. The INRI address is Av. Roraima n° 1000, building 9E, room 117, district: Camobi, city: Santa Maria, state: Rio Grande do Sul, CEP 97105-900, mailbox: 5101