Megger TTR330A Three-Phase Transformer Turns Ratio Test Set

The Megger TTR330A is a portable three-phase transformer turns ratio test set capable of measuring turns ratio of power, distribution, and instrument transformers in a manufacturing or substation environment. A capable design makes the TTR330A well suited for field use allowing for accurate testing in all environments. The TTR330a also includes a 12 in touch controller and remote-control function through the PowerDB software application to make operation as streamlined as possible. These attributes reduce the time required for testing three-phase transformers, improving overall efficiency and workflow.

Product Info

Input Power	120V, ±10% 60Hz, ±2 Hz, 100 VA 240V, ±10% 50Hz, ±2 Hz, 100 VA (-47)
Excitation Voltage	8, 40, or 80 V rms, automatically or manually selected
Excitation Current Range	0 to 500 mA
Excitation Current Accuracy	3 digit resolution, ±(2% of reading + 1 digit)
Phase Deviation Range	±90 degrees, 1 decimal point for the minutes display, 2 decimal points for the degree display
Deviation Phase Accuracy	Accuracy: ±3 minutes (±0.05 degrees)
Communication/Control Software	PowerDB ONBOARD, PowerDB LITE and PowerDB
Internal Data Storage	Up to 100,000 data sets
Unit Dimensions	8.5 H x 21.5 W x 13 D in. (216 H x 546.1 W x 330.2 D mm)
Unit Weight	28 lbs. (12.7 kg.)

Store and download test results in XML format, via RS-232, Ethernet or USB ports (depending on model)
Works in the presence of high interference/ high voltage
Capable of measuring phase-shifting transformers
Highest ratio measurement (45,000:1)
Displays % error vs. name plate with pass/fail limits
Capability for automatic vector detection when testing via PowerDB