Laboratory service

      Tests on distribution transformers

      Ensayos de transformadores de distribución

      We carry out full type tests on dry and oil-immersed distribution transformers, according to the IEC 60076 set of standards.

      Maximum capacities: 36 kV, 5000 kVA.

      We have full capacity to carry out the following accredited tests at our electrical laboratories:

      TESTS

      • Measurement of winding resistance
      • Measurement of voltage ratio and check of phase displacement
      • Measurement of short-circuit impedance and load loss
      • Measurement of no-load loss and current
      • Measurement of zero-sequence impedance(s) on three-phase transformers
      • Leak testing with pressure for liquid immersed transformers
      • IEC 60076-3 individual dielectric tests
      • IEC 60076-15 Leakage and pressure tests for gas-filled power transformer tanks
      • IEC 60076-11 19 Applied Voltage Test
      • IEC 60076-11 20 Induced Voltage Withstand Test
      • IEC 60076-11 21 Lightning Impulse Test
      • IEC 60076-11 22 Partial Discharge Measurement (routine and special test)
      • IEC 60076-2 Temperature Rise Tests
      • IEC 60076-10 Determination of Sound Levels
      • IEC 60076-5 Ability to withstand short circuits
      • Measurement of absorbed power
      • Measurement of losses and the no-load current at 90% and 110% of the rated voltage
      • IEC 60076-11 26 Environmental Tests
      • IEC 60076-11 27 Climatic Tests
      • Frequency Response Analysis FRA

      CAPACITIES

      • Short-circuit Tests: 100 kA, 1 s
      • Large chambers for temperature rise tests at high temperatures: 5.5 x 4 x 4 m; 4.2 x 3 x 2.6 m

      Aimed at:

      • Electrical Companies
      • Engineering Firms
      • Manufacturers of Distribution Transformers
      • Installers
      • Electrical Maintenance Firms
      • Industrial Plants
      • Promoters of Renewable Energy Farms

      Accreditation and Recognition

      Acreditación ENAC ILAC para el sector materiales según ISO 17025 con nº expediente 4/LE148
      ENAC ILAC accreditation for electrical testing in compliance with ISO 17025, under file No. 4/LE148
      Organismo Notificado Nº 1292 para el Reglamento de Productos de la Construcción
      Official Body certified by the Electromagnetic Compatibility EMC 2014/30/UE Directive
      Organismo Notificado Nº 1292 para el Reglamento de Productos de la Construcción
      Official Body certified by the Low Voltage Directive 2014/35/UE
      Organismo Notificado Nº 1292 para el Reglamento de Productos de la Construcción
      Official Body certified by The Measuring Instruments Directive 2014/32/EU
      Lovag
      ES-02 registered laboratory by the LOVAG (Low Voltage Agreement Group) European Association
      IEC
      IECEE CB testing laboratory