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