HM5001Z Transformer Turn Ratio Tester is a fully blind-test device of its kind (it can accurately measure the turn ratio, tap position, and phase angle without requiring any knowledge of the transformer under test); it features a brand-new white panel with a simple yet elegant design.

• Single-phase input, three-phase output, pure waveform, and accurate phase group identification.
• Capable of measuring both transformation ratios, with the operating ratio more closely matching actual conditions.
• Measures phase angles from 0° to 360°, with a six-point diagram for instant group identification.
• Fully automatic connection group detection-measures even without a nameplate.
• Enter the rated ratio once, and the system automatically calculates the error for each range.
• Color screen displays vector diagrams; built-in printer provides instant results.
• Long-lasting lithium battery-500 measurements per charge.
• Weighs only 2.6 kg, with military-grade connectors for vibration resistance and durability.