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Megger TTRU1 Handheld Transformer Turns Ratiometer

Megger
SKU: MEGGTTRU1
  • Measures turns ratio, polarity, and excitation current
  • Full-colour LCD with pass/fail evaluation and automatic data storage
  • Features long-lasting rechargeable batteries and easy-to-use guided interface
More Info
Price Available Upon Request
Made to order

Megger TTRU1 Handheld Transformer Turns Ratiometer

The Megger TTRU1 Handheld Transformer Turns Ratiometer allows for the user to perform routine turns ratio and polarity validation tests on power, distribution, and instrument transformersm guided by colour-coded leads, clamps, and customisable on-screen vectors that match the transformer nameplate. The TTRU1 delivers accurate AC voltage and current with minimal user input, supporting single-phase, three-phase, and instrument transformer testing. In addition to turns ratio tests, the ADV model includes go/no-go short circuit, open circuit, and inductance test capabilities, ensuring comprehensive transformer evaluation.

The TTRU1 is designed for simplicity and efficiency. Its intuitive full-colour Hi-bright LCD interface, auto screen dimming, and guided setup reduce training time and make testing straightforward. Results are automatically stored and can be exported via USB to Excel or PDF, or imported into PowerDB for easy management. Users can save commonly tested transformer configurations and vectors, enabling quick selection and consistent, accurate results. Optional accessories, including a USB printer, hand crank, and solar battery pack, further expand its versatility.

Battery operation is optimised for long testing sessions. The TTRU1 can perform over 1000 turns ratio tests on a single charge using-factory installed AA NiMH USB-C rechargeable batteries. Recharging is simple via any standard USB wall charger or computer USB port. Combined with additive/subtractive polarity recognition and excitation current measurement, the TTRU1 delivers safe, repeatable, and reliable results, helping locate issues such as magnetic core defects, shifting windings, or turn-to-turn insulation failures.

Megger TTRU1-BASIC vs TTRU1-ADV

Use this comparison table to compare Megger TTRU1 models, and see which is the right one for you.

Model TTRU1-BASIC TTRU1-ADV
Approximate Maximum Transformer Capacity 2 MVA 10 MVA
Max induced voltage 37.5V 62.5V
Max turns ratio 50,000 Down 50,000 Down
Max current 1A 1A
Full colour Hi-bright LCD screen ✔ ✔
Pass/Fail ratio evaluation ✔ ✔
Additive/Subtractive polarity validation ✔ ✔
Excitation current measurements ✔ ✔
Automatic results storage ✔ ✔
Auto dim and power off battery saving ✔ ✔
Self-check diagnosis ✔ ✔
USB drive save and export ✔ ✔
Battery operated NiMH or alkaline ✔ ✔
USB-C NiMH battery charging ✔ ✔
Soft carry bag with belt loop hook ✔ ✔
Microsoft Excel export ✔ ✔
PowerDB Import - ✔
Go/No Go short circuit, open circuit, inductance - ✔
Customisable transformer vector list and voltages - ✔
USB printer Optional Optional
Hand crank/solar battery charger pack Optional Optional

Key Features

  • Measures transformer winding ratios for single-phase, three-phase, and instrument transformers
  • Identifies additive or subtractive polarity to confirm the correct vector group
  • Detects magnetic core imbalances, shifting windings, turn-to-turn insulation failures, and tap changer issues
  • The ADV model Is able to quickly verify transformer health and identify faults, as well as check for open winding conditions and measuring winding inductance to detect anomalies
  • Features a full-colour LCD with on-screen vectors and colour-coded leads, which simplifies setup and reduces errors
  • Stores test results, exports to Excel/PDF, and imports to PowerDB
  • Utilises 6 x AA NiMH USB-C rechargeable batteries, which can conduct over 1000 tests per charge
  • Has an accuracy of ±0.05% TTR

What's In The Box?

  • Choice of Megger TTRU1-BASIC or TTRU1-ADV Handheld Transformer Turns Ratiometer
  • Soft carry case (1012-063)
  • USB C to A cable (90041-001)
  • USB C to C cable (90041-002)
  • 2m (6ft) H and X leads (1015-031)
  • USB drive (90012-878)
Specification
  • Turns Ratio Accuracy - ±0.05%
  • Induced Voltage – Up to 62.5V AC
  • Polarity Detection – Additive/Subtractive
  • Excitation Current Measurement - Yes
  • Short Circuit Impedandce, Open Circuit, and Inductance Tests – ADV model only
  • Temperature Range - -20°C to 50°C
  • Battery – 6 x AA NiMH USB-C rechargeable
  • Charging – USB-C
  • Display – Full-colour LCD, auto dimming
  • Data Storage - Automatic
  • Data Export – USB, Excel, PDF
  • User Interface – Guided setup, colour-coded leads
  • Portability – Compact, carry bag included
For extensive specifications, view the attached datasheet.
Label Type Size Download
pdf Megger TTRU1 Datasheet pdf 338.5 KB Download