Megger General Test Equipment

Features:

• Determines rotation direction of one, two or three-phase motors before connection to line
• Determines phase rotation or sequence of energized power circuits
• Determines polarity of instrument and power transformers
• Determines phase/polarity of unmarked motor windings
• Identifies true phase sequence of energized AC power lines up to 600 volts (Higher voltages can be tested by interposing a step-down transformer.)

The latest TTR available from Megger is the TTR20, a handheld, robust, lightweight and battery-operated instrument.  This TTR offers switchable functions, such as winding resistance and polarity.  It is the only instrument in the marketplace that displays both tested and expected polarity results.  With a turns ratio of 20,000:1, the TTR20 offers exceptional turns ratio accuracy of 0.1%.

The TTR20 is used to perform tests in the field, as well as in manufacutring facilities and repair centers.  Improved testing productivity is achieved in these environments through the efficient collection and storage of large amounts of data, which can then be uploaded to a PC database for analysis and test results reporting.

Features:

• May also test three-phase distribution transformers (tested phase to phase)
• Most accurate; with highest turns ratio in the industry, ±0.1%
• Fully automatic; fast, easy-to-use, robust and lightweight
• Battery-powered with power-saving and shutdown function
• Tests turns ratio, phase displacement, excitation current, vector group, winding resistance and polarity
• Alphanumeric keyboard
• RS-232 for data transfer and printing
• Stores 200 test results and 100 user-defined transformer test settings