TURA-X, True Three-Phase Transformer Turns Ratio Tester with Built-in Printer

TURA-X is designed by advanced engineering technology to measure the turns ratio of single-phase and three-phase transformers. Turns ratio measurement of phase-shifting transformers can be done by using TURA-X. It has a fast, easy and accurate TTR measurement features for current, voltage and power transformers by its user-friendly software.

By using ANSI/IEEE C57.12.90 measurement method TURA-X can make precise results. TURA-X is one of the most accurate devices with its wide range ratio (0.8 to 50,000) measurement capability and high precision (0.08 %). Besides the ratio measurement, TURA-X can also measure excitation current, phase angle, polarity and ratio error. Even though TURA-X has three-phase cable configuration; the user can make single-phase transformer tests.

TURA-X can detect vector group automatically. TURA-X has a wide operations range from high excitation value current transformer to high powered power transformer at substation with the 1V, 4V, 10V,  40 V, 100 V, 250 V & 430 V AC test voltage generation capability. 7-inch colour touch display allows TURA-X to show all measurement results on a single screen. USB, Bluetooth (Option) and Flash Memory features allow TURA-X to control, record and store measurement results (up to 100 Test Record).

With the HighTest Data Management Platform (DMP), User can control TURA-X and analyse measurement results Operators can easily print the measurement results with the 2.28-inch built-in Printer of TURA-X. Multi-language capability and user-friendly operation menu make it easy to control TURA-X, even by less trained staff. TURA-X can control tap changer (raise and lower) via its tap changer outputs. TURA-X is a light, compact and rugged device with the protection of IP67 (case closed).

In addition to ratio tests, TURA-X can be used to perform Magnetic Balance Test as well.



  • Turns Ratio Measurement (Single-phase and true three-phase measurement)
  • From 0.8 to 50,000 Ratio Measurement
  • High Accuracy (0.08 %)
  • Ratio Error Measurement
  • Magnetic Balance Test
  • Excitation Current, Phase Angle, Polarity Measurement
  • Built-in Printer
  • Automatic vector group detection feature
  • Internal Memory, USB Flash Drive
  • PC control via USB cable
  • Optional Bluetooth control and communication
  • 7-inch large colour touch display


Measurement Parameters Turn ratio measurement, Excitation current, Phase Angle, Polarity, Ratio Error(%), Vector Group Detection, Magnetic Balance
Ratio Measurement Modes CT Mode, PT Mode (Single-Phase and True Three-Phase )
Measurement Method ANSI/IEEE C57.12
Test Voltages CT Mode: 1 V and 4 V ;PT Mode (Phase-Neutral): 1, 4, 10, 40, 100, 250 V

PT Mode (Phase-Phase): 1, 4, 10, 40, 100, 250 V, 430 V

Ratio Range 0.8 – 50,000
Accuracy Mode Accuracy Ratio
CT Mode (1V -4 V) 0.08 %0.1 % 0,8 – 399400- 4000
PT Mode (10 V- 430 V) 0.08 %0.15 %

0.5 %

0.8 – 50005001 – 12000

12001 – 50000

Phase angle measurement 0 – 360 Degree
Excitation current 2 A
Power Supply 100-240 V, 47/63 Hz
Battery (Option) Yes
Memory Up to 100 records (include up to 25 tap results)
Printer 2.28-inch printer
Communication USB 2.0/1.1 Standard-A, USB 2.0/1.1 Standard-B, Bluetooth (factory install Option)
PC Software DMP Software
Display 7-inch colour touch display
Dimensions 16.7″ x 13.4″ x 6.8″ (424 mm x 340 mm x 173 mm)
Weight 7.1 kg
Working Temperature -10 C to + 60 C
Protection Class IP67 (case closed)
Set of package TURA-X, Power Cable, Ground Cable , 15 feet Standard Test Cable Set, 30 feet Extension Cable Set, Tap Changer Cable Set, USB Cable, Printer Paper (x2), USB flash drive, Instruction Manual (Soft Copy), DMP Software, Cable Bag
Options Hard Carrying Case, Battery, Bluetooth (factory install option)

Specifications are valid under 25 °C temperature. *Contents subject to change without notice.

Version V02B 11/2019

TURA-X, True Three-Phase Transformer Turns Ratio Tester with Built-in Printer