Megger TTRU1 Handheld Turns Ratiometer

Megger TTRU1 Handheld Turns Ratiometer


Handheld, battery-operated transformer turns ratiometer with optional Go/No Go and short-circuit impedance measurement capabilities.

The TTRU1 is the latest handheld transformer turns ratiometer from Megger. In addition to routine polarity validation and turns ratio tests, the TTRU1 can measure short-circuit impedance (leakage reactance) with the same one-time connection.

Guided by color-coded leads, clamps, and customizable on-screen vectors that match the transformer nameplate under test, the easy-to-follow setup ensures the right result the first time.

Perform up to 1000 turns ratio tests on a single NiMH AA battery charge. When it’s time to recharge the batteries, connect to any standard USB wall charger, or connect to your PC. When connected to the PC, TTRU1-EXP results can be downloaded, and the user guide and data sheet can also be accessed.

Key Features

• Perform routine polarity validation and turns ratio tests
• Easy-to-use interface on full color bright LCD
• Click start and perform over 1000 turns ratio tests on a battery charger
• Pass/fail ratio evaluation
• Additive/Subtractive polarity validation
• Excitation current measurements
• Export saved results for analysis
• TTR up to 37.5 V AC with ±0.05% accuracy

The TTRU1 handheld meters use a single-phase step-down method to measure the ratio and polarity of the transformer's turns. It can help identify any shorted turns, open-circuited conditions, or insulation deterioration to ensure the power transformer is performing properly.

A full-color, hi-bright LCD screen, rotary knob, seven function buttons, and an easy-to-follow setup provide the right result every time. The meter performs a vector group validation during every test to determine whether the transformer is additive or subtractive.

Use the excitation current test to locate defects in magnetic core balance, magnetic core structure, shifting windings, failures in the turn-to-turn insulation, or problems in tap changers.

Store up to 10,000 sets of single-phase results on the meter. Install PC software to view and download data to a computer or a thumb drive via the USB-A connection. The meter operates on six NiMH rechargeable batteries, offering maximum portability and flexibility; it performs up to 1000 TTR tests on a single charge. Simply charge batteries by connecting to a wall charger or computer USB port.

Specifications: