Tettex MIDAS micro 2883 - Test Mode GST G for Grounded Test Objects with Guarding (V-Potential)

Functional Description
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6.3.3 Test Mode „GST g“ for grounded test objects
with guarding (V-potential)
This test mode directly measures the capacitance between the HV terminal and the housing (which is grounded).
The partial capacitances that are undesirable for the measurement are connected to the V-potential point and
thereby rendered ineffective.
When measuring transformers‚ this configuration measures the capacitance and dissipation factor between the
various winding groups and the transformer housing. The windings which are not used for measurement are
connected to the v-potential of the measuring system via the A (or B) measuring cable and the internal Test Mode
Switch.
GST g(A+B) measurement