VANGUARD ATRT-03 3 Phase Automatic Transformer Ratio Meter

• 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
• Windows report software included
• 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 Vac 50/60 Hz

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.