The TR 100 is a single-phase transformer turns ratio test instrument designed to test any type of transformer. It performs turns ratio tests per the IEEE C57.12.90 measurement standard. The TR 100 generates its own single-phase excitation test voltage which is applied to the transformer’s primary windings. The secondary voltage is measured to calculate the turns ratio. The TR 100’s measuring range is 0.8-30,000 : 1. In addition to measuring turns ratio, the TR 100 can also measure excitation current and phase angle difference between the primary and secondary voltages. The test results can be displayed on the unit’s built in color display.

Features :

• Selectable test voltages: 1, 4, 40, 100 & 250 VAC (optional)
• Measurement range 0.8 – 30 000 with 0.1% accuracy
• Built in 2” thermal printer
• Stores up to 128 test results with up to 33 readings for each test. (4000 test results)
• Battery backup for up to 4 hours of operation
• Displays winding polarity, excitation current and phase angle
• Calculate turns-ratio percentage error
• Field portable rugged housing