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VTRM-3D — 3-Phase Automatic Transformer Turns Ratio Meter

The VEER VTRM-3D is a versatile, automatic transformer turns ratio meter capable of testing 1-phase and full 3-phase vector group configurations. Supporting YY, DY, DD, and YD connections, it delivers direct LCD readings of turns ratio, % deviation, and excitation current. With a rugged portable design, 200-test memory, and PC software support, the VTRM-3D is an advanced diagnostic tool for transformer factories, utilities, and maintenance teams.

Key Features

  • Supports 1-phase, Y-Y, D-Y, D-D, and Y-D testing

  • Automatic turns ratio measurement from 1 to 2000 (1-4000 optional)

  • Jumbo 20×4 LCD display

  • Dedicated keypad for fast operation

  • % deviation and excitation current measurement

  • HV/LV hook-up error indication

  • 200 test data storage

  • ANSI/IEEE C57.12.90, IS 2026, IEC 60076 compliant

  • Portable, lightweight design

Operating Overview

  • Measures transformer winding ratio, deviation, and excitation current

  • Test voltage applied via ON/OFF control

  • PC connectivity for data transfer

  • Designed for both factory test bays and on-site work

Applications

  • Transformer manufacturing quality control

  • Commissioning and field diagnostics

  • Transformer repair and rewinding workshops

  • Utility substations and industrial plants

  • Training and research institutions

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