The BIDDLE Three-Phase Automatic TTR is an instrument designed to measure the turns ratio of power, instrument and distribution transformers
Fully automatic operation. Also measures three phases simultaneously
Highest ratio measurement (10,000:1) and highest accuracy (0.1%)
Built-in data storage (up to 200 sets of results) and download capabilities
Displays % error vs name plate and pass/fail limits
Operator choice of "quick" test or complete "full" test
Simple menu driven operation in six selectable languages
Three user selectable standards (ANSI, IEC and Australian)
The BIDDLE Three-Phase Automatic TTR is an instrument designed to measure the turns ratio of power, instrument and distribution transformers. Deviations in ration, excitation current and phase deviations all indicate problems in one or both windings. The TTR aids in identifying shorted coils, open circuits, incorrect connections, internal faults, or tap-changer defects in load top changers or standard transformers.
* Hand-held single-phase unit also available
AVO International, 4651 S. Westmoreland Road, Dallas, TX 75237-1017. Tel: 214-330-3245; Fax: 214-333-3533.