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Megger TTRU3-EXP/PRO/ADV True 3 Phase Transformer Turns Ratiometer - 3Ø 125 or 250V

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TTRU3-EXP/PRO/ADV
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Megger TTRU3-EXP/PRO/ADV True 3 Phase Transformer Turns Ratiometer
Description

The Megger TTRU3 transformer turns ratio tester is a revolutionary instrument designed to perform three-phase turns ratio measurements using step-up excitation. A single three-phase lead-set connection is all that is required to complete three-phase tests in less than 10 seconds!

Megger's TTRU3 - Customer explores the TTRU3

The TTRU3 is capable of three-phase excitation and can induce up to 250 V on the primary winding, overcoming the voltage dependence on larger transformers. The three-phase source also allows you to test phase shifting and zigzag transformers and provides you with a guaranteed accuracy of ±0.05 % from -20 °C to +50 °C.

Download results or control the instrument remotely by connecting the TTRU3 to a computer. There is also an optional 2-inch printer for the instrument, giving you a hard copy of your results if required.

One Touch OLTC – TTRU3

You can also configure test plans and store results directly on the TTRU3 using the built-in 7-inch (18 cm) daylight-viewable touchscreen display. Results can be downloaded in Excel to generate reports, and PDF files can be saved to a USB drive.

Truly Simple

The TTRU3 is an important tool for determining the mechanical condition of transformers. It is so simple to use that only a quick guide is enough to begin testing. All ratio tests are performed with one 3Ø lead set connection.

Vivid Touchscreen

With the latest 7-inch touchscreen display, it's easy to see and operate in dark and sunny conditions, and temperatures down to -20 C. The display uses large icons, simplifying the transformer testing process.

Accurate and Fast

The most impressive part is the accuracy, its 3Ø test gives results that you can trust, and at under 10 seconds per test, you'll have more time in your busy day.

Key Features

  • Guaranteed accuracy ±0.05 % from -20 °C to +50 °C
  • Phase shifting and zigzag transformers are tested easily and accurately
  • Fast three-phase tests - less than 10 seconds
  • 3Ø test voltage - up to 250V
  • Banana plug input for connection to terminal blocks
  • Confirm the expected nameplate vector configuration
  • Ability to measure actual vs expected phase shift
  • Unique kelvin clamps with an adjustable 3-inch jaw
  • Turns ratio % error vs nameplate with pass/fail
  • PC interface via USB for remote control operation and downloading of test results

TTRU3 True 3 Phase Transformer Turns Ratiometer

What's Included?

  • Transformer turns ratio tester
  • AC Adapters & Power Cord - 2.5m (8ft)
  • USB 2.0 Cable
  • OLTC Tap Changer cable - 9m (30ft)
  • Cable bag - backpack
  • Ground Cable - 5m (16ft)
  • Thumb Drive
  • Triple Function Pen

Software Included with TTRU3 Expert

  • All Automation SW
    • PowerDB Control
    • One Touch OLTC
    • Custom App Control
  • All Versatile SW
    • Phase Shifting
    • Magnetic Balance

Product Range

  • Megger TTRU3-ADV TTRU3 Advanced, 3Ø 125V
  • Megger TTRU3-EXP TTRU3 Expert, 3Ø 250V + All SW
  • Megger TTRU3-PRO TTRU3 Professional, 3Ø 250V
Megger TTRU3 True 3 Phase Transformer Turns Ratiomete in action Megger TTRU3 True 3 Phase Transformer Turns Ratiomete in action

Revolutionary Design

The TTRU3 uses patent-pending 3Ø step-up turns ratio testing to perform a complete series of measurements on a transformer.

Confidence While Testing

The TTRU3 can confirm the expected nameplate vector configuration.

Versatile Measuring Ability

With a true 3Ø source, zig-zag and phase-shifting transformers can be tested quickly and accurately.

High-Quality Clamps

The TTRU3 leads come with industry-defining kelvin clamps with adjustable 3-inch jaw and banana plug inputs, making connections to transformers or terminal blocks easy and safe.

Downloads

Datasheets

Megger TTRU3 Datasheet Datasheets
Tech Specs
Input Power 90-264VAC, 47-63Hz, 250VA Max
Output Voltage 3Ø, 1 - 48VAC, up to 250V on Primary
Frequency 50-480Hz
Current 0.1mA - 1A, Max 2A @ 48V
Turns Ratio Measurement Methods 3Ø Step-Up, 3Ø Step-Down, 1Ø Step-Up, 1Ø Step-Down
Turns Ratio Range and Accuracy

Guaranteed accuracy from -20°C to +50°C
Step-Down Excitation 25-48V ±0.05% 0.8 - 1000
±0.10% 1001 - 2000
±0.30% 2001 - 15000
±1% 15001 - 50000
Step-Down Excitation 1-24V ±0.10% 0.8 - 1000
±0.20% 1001 - 2000
±0.60% 2001 - 15000
Step-Up Measurement 25-250V ±0.05% 0.8 - 200 (most Power Tx)
Step-Up Measurement 1-24V ±0.10% 0.8 - 200
Excitation Current Measurement Resolution 0.1mA 0.1mA - 100mA, 1mA 101-2000mA
Accuracy ± 1% ±0.1 mA
Frequency Measurement Resolution 0.1 Hz
Accuracy ±0.1% ±0.1 Hz
Transformer Phase Measurement Range 0 - 360 Degrees
Accuracy ± 0.05 Degrees
Resolution 0.01 Degrees
Weight 6.5kg / 14lbs
Dimensions 406 x 304 x 254mm / 16 x 12 x 8in
Environmental Operating -20°C to +50°C (-4°F to +122°F)
Storage -30°C to +70°C (-22°F to +158°F)
Relative Humidity 0-90%, non-condensing
Regulatory Safety IEC 61010-1:2010 + AMD1:2016
EMI/EMC IEC 61326-1:2012
RoHS2 EN50581
Vibration/Drop/Shock MIL-STD-810G
Touchscreen 180mm (7 in.), 800 x 480 Resolution, 1100 NITS
Transformer Testing Standards IEEE C57.152-2013, IEC 60076-1:2011, AS/NZS 6076 1:2014, CIGRE 445 2011
Case Rugged case with fold-out feet, canvas carrying bag for leads and accessories
Internal/External Data Storage Up to 2000 sets of 3-phase results internal storage, transferable via USB 2.0/3.0 thumb drive
Communication/Control Software 180mm (7in) built-in display running custom GUI, USB Interface for PC Control running custom GUI
Printer Output 51mm (2in) thermal printer, prints all measurement data displayed on GUI

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Additional Information
SKU TTRU3-EXP/PRO/ADV