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Megger TTRU1 Handheld Transformer Turns Ratiometer

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  • High-accuracy TTR tester (±0.05 %) for step-up and step-down transformers, compliant with IEEE C57.152-2013 and IEC 60076-1.
  • Compact and rugged (IP54, MIL-STD-810G) with 1 kg weight and full-color LCD for field use.
  • Measures impedance, reactance, inductance, and power factor with single-phase output (1-50 V, 40-480 Hz).
  • Features USB-C charging, 10,000-result storage, and optional thermal printer for data reporting.
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Description

About this model

Professional Transformer Diagnostics With the Megger TTRU1 Handheld Ratiometer

Transformer testing requires precision, speed, and reliability, especially when working in demanding field environments. The Megger TTRU1 Handheld Transformer Turns Ratiometer is engineered to deliver all three, providing technicians with a sophisticated tool that goes far beyond basic turns ratio verification. By integrating polarity validation, short-circuit impedance measurement, and advanced data management into a single handheld device, the TTRU1 streamlines the entire diagnostic process. For professionals seeking to purchase this instrument, the Buy Megger TTRU1 option offers immediate access to industry-leading accuracy and ease of use, ensuring that every test is performed correctly on the first attempt.

Technical Features and Field Applications of the Megger TTRU1

The core design philosophy of the TTRU1 centers on minimizing setup time while maximizing data accuracy. Traditional transformer testing often involves complex wiring and interpretation of manual results, which can lead to errors. The TTRU1 addresses this by utilizing color-coded leads and clamps that physically prevent incorrect connections. Furthermore, the device features customizable on-screen vector diagrams that mirror the specific transformer nameplate being tested. This visual guidance is crucial for technicians navigating three-phase configurations, as it eliminates the guesswork associated with vector groups and ensures that the setup aligns perfectly with the transformer’s internal design.

Beyond standard turns ratio testing, the TTRU1 introduces a standout capability: measuring short-circuit impedance (leakage reactance) using a single connection setup. This feature is a significant time-saver, allowing technicians to perform comprehensive diagnostics without reconfiguring leads or equipment. The device supports both step-up and step-down excitation methods, covering a broad range of transformer types from distribution units to large power transformers. By adhering to rigorous standards such as IEEE C57.152-2013 and IEC 60076-1, the TTRU1 ensures that all measurements are compliant with global regulatory requirements.

Battery Life, Charging, and Data Management Capabilities

Fieldwork often extends far from convenient power sources, making battery endurance a critical factor in tool selection. The Megger TTRU1 is equipped with a robust power system capable of performing up to 1,000 turns ratio tests on a single charge of its NiMH AA battery. This impressive longevity ensures that technicians can complete extensive testing schedules without interruption. When it is time to recharge, the unit offers versatile options, including connection to any standard USB wall charger or a PC. This flexibility is complemented by the device’s ability to interface with computers for more than just power; when connected, users can download test results, access user guides, and view data sheets directly from the instrument.

Data management is further enhanced by the TTRU1’s extensive internal storage and export capabilities. The device can store up to 10,000 sets of single-phase results internally, along with 10 custom vector configurations. For reporting and analysis, the TTRU1 supports Microsoft® Excel® export and PowerDB import, facilitating seamless integration into existing workflows. The inclusion of a USB-C connection ensures fast data transfer, while the optional thermal printer allows for immediate hard-copy documentation in the field. For those looking to secure the best value, the Megger TTRU1 Price reflects these advanced data handling features, which are essential for modern asset management.

User Interface and Ergonomic Design Advantages

Ease of use is a defining characteristic of the TTRU1, achieved through an intuitive interface and thoughtful ergonomic design. The device features a full-color 3.5-inch LCD screen with high-brightness display and auto-dimming capabilities to preserve battery life. Navigating the menu is straightforward, thanks to customizable transformer vector lists and guided three-phase transformer tests that walk the user through each step. The instrument’s self-check feature automatically verifies its operational integrity before testing begins, providing an additional layer of confidence in the results.

Durability is equally prioritized, with the TTRU1 housed in a heavy-duty over-molded case rated at IP54 for dust and water resistance. It meets MIL-STD-810G standards for vibration and shock, making it suitable for rough field conditions. The unit is compact and lightweight, weighing only 1 kg (2.2 lbs), and includes a belt-loop carry bag for hands-free transport. These ergonomic considerations reduce technician fatigue during long testing sessions, contributing to overall job efficiency and safety.

Specification
FeatureSpecification
Input power6 x IEC LR6 1.5 V alkaline (AA)
6 x IEC HR6 1.2 V NiMH rechargeable (AA)
Battery life1000 TTR tests on a single charge
Storage: 1+ years NiMH, 5+ years alkaline
Battery chargingUSB-C when set to NiMH batteries
Protection against alkaline charging
PowerEx PRO NiMH battery charging0 - 45 °C
OutputVoltage: Single phase, 1 - 50 V
Current: 0.1 mA - 1 A
Frequency range: 40 - 480 Hz
RegulatorySafety: IEC 61010-1:2010 + AMD1:2016
EMI/EMC: IEC 61326-1:2012
RoHS2: EN50581
Vibe/Shock: MIL-STD-810G
Ingress: IP54
Transformer testing standardsIEEE C57.152-2013
IEC 60076-1:2011
AS/NZS 6076 1:2014
CIGRE 445 2011
GOST 3484.1-88
Dimensions22.8 x 10.5 x 7.5 cm / 8.98 x 4.1 x 2.95 in
Weight1 kg / 2.2 lbs
CaseHeavy duty over-molded case with built-in connection for hook strap
Carry case with quick start guide, belt loop hook, and pouches for included lead set and accessories
Internal/external data storageUp to 10 custom vector storage
Up to 10,000 sets of single phase results internal storage
Transferable via USB 2.0 drive
USB-C connection to PC (EXP ONLY)
Communication/control softwareUSB Interface for PC download with custom GUI
DisplayFull colour 88 mm (3.5 in) 320 x 240 px Hi-bright LCD screen with auto dim and auto off to preserve battery life
Printer (optional)51 mm (2 in) thermal printer
Prints all measurement data displayed on GUI
EnvironmentalOperating: -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
TTRTurns ratio measurement methods: Single phase step up, Single phase step down
Turns ratio range and accuracyStep down excitation:
25 - 50 V: ±0.05 % (0.8 – 1000), ±0.10 % (1001 – 2000), ±0.30 % (2001 – 15000), ±1.0 % (15000 +)
1 - 24 V: ±0.10 % (0.8 – 1000), ±0.20 % (1001 – 2000), ±0.60 % (2001 – 15000), ±2.0 % (15000 +)
Step up measurement:
25 - 250 V: ±0.05 % (0.8 – 200, most Power Tx)
1 - 24 V: ±0.10 % (0.8 – 200)
Excitation current resolutionResolution: 0.1 mA (0.1 mA – 100 mA), 1.0 mA (101 mA – 1000 mA)
Excitation current accuracy±1 % reading, ±0.1 mA
Frequency accuracy±1 % reading, ±0.1 Hz
Phase range0 – 360 °
Phase accuracy±0.05 °
Max voltage output45 V AC peak
SCIImpedance measurement methods: Single phase
Impedance measurement range0.1 Ω – 700 Ω
Impedance accuracy±1 % reading, ±0.01 %; ±1 % reading, ±0.10 mΩ
Reactance measurement range0.1 Ω – 700 Ω
Reactance accuracy±1 % reading, ±0.01 %; ±1 % reading, ±0.10 mΩ
Inductance accuracy±1 % reading, ±10 µH
Power factor range0.1 % – 100 %
Power factor accuracy±5 % reading, ±0.1 %
AC current accuracy±0.2 % reading, ±0.1 mA
Downloads
FAQs & How To

FAQs

It is used to perform transformer turns ratio testing for commissioning, diagnostics and maintenance applications.
Yes, the handheld design allows easy transport and efficient field testing in substations and industrial sites.
Turns ratio testing helps verify transformer winding accuracy and detect potential faults before failures occur.
Engineering teams, maintenance technicians, utility specialists and transformer service professionals commonly use this instrument.
You can buy it online from uazon.ae through an authorized distribiutor with retail hybrid support.
Contact us through the store; we reply within one business day.

How To

Portable transformer turns ratio testing for maintenance, commissioning and engineering diagnostics.

Estimated Time: PT15M

Ensure the transformer is isolated, de-energized and safe for testing before connecting the instrument.
Attach the Megger TTRU1 Handheld Transformer Turns Ratiometer leads to the appropriate transformer terminals.
Power on the device and begin the transformer turns ratio measurement process.
Check the displayed ratio results and compare them with expected transformer values.
Record the measurements for maintenance reports, engineering documentation or project records.
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