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Haefely Test AG's TTR 2795 is the successor
of the very successful ratio meter
type 2793a.
On-site testing of turns ration 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 the
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.
There are many features that make the 2795 unique:
> Highest accuracy in the industry of 0.03%
> Automatic winding connection identification AWCI and automatic vector group detection
> Built-in thermal printer for quick test report generation
> Software for remote control, data storage and report generation, included in standard scope of supply
> Very compact design, 25% smaller than the TTR type 2793a
> One button operation and easy access menu structure
> Large graphic display of turns ratios as a function of tap changer position
For detailed information, please contact Air-Parts B.V., dept. EP&A, tel. +31 (0)172 422 455.
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