Voltech AT3600 Tests: Z

Superior by design, the AT3600, with its patented digital measurement techniques, has revolutionized transformer testing throughout out the world. Only the AT3600 combines high and low voltage testing in one station to provide this combination of speed, accuracy, flexibility and reliability.

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Tests: Z - Impedance Back To Tests

Price: $549.00

Where Used

The impedance test measures the impedance of a transformer winding by applying a specified voltage and frequency and by measuring the current that flows, calculating the magnitude of the complex impedance.

Measurement Conditions

Diagram 1

The load resistor is assumed to be on the fixture, but not shown on the Editor schematic. It is switched in circuit using an OUT test that must be inserted in the program before the Z test. (The relay patterns associated with inserting and removing fixture resistors have deliberately not been included in the Z test dialogue for two reasons: a) it would make the dialogue too complicated, and b) it is not always necessary - e.g. in the case of a fixture where the resistor is permanently fitted in circuit).

The test voltage is applied to the input winding, and the voltage and current measured. From the measured results the impedance is calculated.

Diagram 2