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Primary Test System for Substation Equipment
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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.
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Primary injection testing capabilities up to 3000 A with the optional module BUX 3000.
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Power dissipation factor test with the optional module TD 5000 (voltage up to 12 kV).
Function:
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Test of Current Transformer:
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CT ratio and polarity voltage method.
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CT ratio, polarity and burden current method.
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CT burden secondary side.
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CT excitation curve.
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Winding resistance.
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Voltage withstand.
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Power factor, capacitance and tan delta.
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Test Of Voltage Transformer:
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VT ratio and polarity.
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VT burden.
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Voltage withstand.
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Remote polarity check.
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Power factor, capacitance and tan delta.
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Test of Power Transformer:
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Ratio per tap.
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Static and dynamic winding resistance and tap changer test.
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No-load current.
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Short-circuit impedance.
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Power factor, capacitance and tan delta.
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Ground Resistivity and Resistance:
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Soil resistivity.
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Ground grid resistance.
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Step and touch voltages.
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Line impedance.
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Circuit Breaker Testing:
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Contact resistance DC.
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Power factor, capacitance and Tan Delta.
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