Fully automatic three-phase Transformer Turns Ratio Meter
On-site testing of turns ratio is an important basic measurement for
power transformer diagnosis. It helps to detect faulty transformer
windings as well as defective tap changer positions. The simple ratio of
turns or voltage and related ratio error is not sufficient to detect all
possible failures of a power transformer winding.
The excitation current and the phase angle between primary and secondary
windings give additional information about the winding condition. The
TTR 2795 provides all these measurements in one compact instrument.
Transformer Turns Ratio Meter TTR 2795 is the next generation of the
very successful Tettex transformer turns ratio meter line. This advanced
instrument recognizes winding connections and vector group numbers of
transformer windings. Just connect the measuring cables and press the
start button. In addition, the selectable test voltages of 100V, 40V,
10V and 1V avoid saturation effects on current transformers