Primary Test System for Substation Equipment

• This primary current injection testing system is designed to perform primary tests requested in substations commissioning. It allows to perform accurate tests on CTs, VTs, PTs and ground grid.

• Primary injection testing capabilities up to 3000 A with the optional module BUX 3000.

• Power dissipation factor test with the optional module TD 5000 (voltage up to 12 kV).

 

Function:

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• Test of Current Transformer:

  • CT ratio and polarity voltage method.

  • CT ratio, polarity and burden current method.

  • CT burden secondary side.

  • CT excitation curve.

  • Winding resistance.

  • Voltage withstand.

  • Power factor, capacitance and tan delta.

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• Test Of Voltage Transformer:

  • VT ratio and polarity.

  • VT burden.

  • Voltage withstand.

  • Remote polarity check.

  • Power factor, capacitance and tan delta.

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• Test of Power Transformer:

  • Ratio per tap.

  • Static and dynamic winding resistance and tap changer test.

  • No-load current.

  • Short-circuit impedance.

  • Power factor, capacitance and tan delta.

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• Ground Resistivity and Resistance:

  • Soil resistivity.

  • Ground grid resistance.

  • Step and touch voltages.

  • Line impedance.

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• Circuit Breaker Testing:

  • Contact resistance DC.

  • Power factor, capacitance and Tan Delta.