Megger TTR330 3-Phase Transformer Turns Ratio Test Set

The purpose of the Megger TTR330 is to measure the power, instrument, and distribution transformers’ turns ratio in a manufacturing or substation setting. In addition to having a high contrast LCD screen that is visible in both bright and dim light, it has specially made leads that give it the flexibility it needs in cold weather.

This TTR is well-suited for use in a range of challenging conditions due to its sturdy and resilient design. Power transformer testing in manufacturing settings is another application for the TTR, which allows for speedy testing (including result storage) with a low chance of error.

• Fully automatic operation
• Integrated PowerDB software package allows for automated control without the use of a laptop
• Built-in capability for storing, printing and downloading test results
• Works in the presence of high interference/high voltage
• Highest ratio measurement (45,000:1); highest accuracy (0.1%)
• Displays % error vs. name plate with pass/fail limits

FEATURES AND BENEFITS

• “PowerDB OnBoard” software allows for automated control and the option of saving data (information processing, data trending, report generation) in an XML file with all historical data.
• Measures the widest turns ratio range in the industry (45,000:1) and provides the highest accuracy (0.1%).
• Enables the operator to enter the ratio of the transformer and all of it’s taps. This allows the operator to know immediately when a tap is outside the acceptable limits so problem taps can be easily flagged.
• Comes equipped with a “remote-control” switch for single person testing. This allows the operator to test transformers with “LTCs” very quickly.
• Internal TTR memory records up to 200 three-phase test results.
• A “Quick Test” mode provides a fast determination of the turns ratio for single and three-phase transformers, thus saving time.
• Rugged, lightweight design ideally suited for a harsh field and substation environment.
• Three user selectable standards: ANSI, IEC, and Australian. Also meets IEC 1010 as well as other safety standards such as CSA and UL.
• Six user selectable languages: French, German, Italian, Portuguese, Spanish and English.
• Environmentally sealed rubberized full QWERTY keyboard and navigational pushbutton interface.

SPECIFICATIONS

Input Power

• Cat. No. TTR330-47: 230 V ac ±10%, single phase, 50 ±2 Hz or 60 ±2 Hz, 100 VA
• Battery Operation (Optional): Inverter 12 V dc to 120 V/230 V ac for operation from vehicle battery
• Excitation Voltage: 8, 40, or 80 V rms, automatically or manually selected
• Excitation Current Range and Accuracy: 0 to 500 mA, 3 digit resolution, ±(2% of reading + 1 digit)
• Accuracy: ±3 minutes
• PC/Printer Interface: RS232 port, 9-pin 9600 baud

Temperature Range

• Operating: 23° F to 122° F (-5° C to 50° C)
• Storage: -58° F to 140° F (-50° C to 60° C)