The Vanguard ATRT-03 S2 is the third generation, microprocessor-based, automatic, three phase, transformer turns ratio tester. This lightweight, rugged, portable unit is designed for transformer testing at utility power substations.
The ATRT-03 S2 determines the transformer turns ratio using the IEEE C57.12.90 measurement method. The ATRT-03 S2 outputs an excitation test voltage to the transformer primary windings. The induced secondary voltage is sensed and the transformer turns ratio is calculated. The ATRT-03 S2 is capable of measuring turns ratios from 0.8 to 15,000. The transformer turns-ratio, excitation current, and phase angle readings are displayed on the large LCD. The automatic transformer type detection feature allows the ATRT-03 S2 to detect and test 130 transformer types defined by ANSI, CEI/IEC and Australian standards.
The ATRT-03 S2 features:
-Highest ratio: 0.8 – 15,000
-Capable of detecting 130 different 3-phase transformer types defined by ANSI, IEC, and Australian standards
-3 Test voltages available: 8Vac, 40Vac, 100Vac
-Phase angle and excitation current measuring
-Computer Interface (RS-232C and USB Port)
-USB flash drive interface
-Name-plate turns ratio calculation
-Computed % error based on measured and calculated ratio
-Optional 4.5″ thermal printer
-Powered from a single phase 100-264 V AC 50/60 Hz