TURA-03B, Battery Powered 3 phase Transformer Turns Ratio Tester

TURA-03B is designed by advanced engineering technology to measure the turns ratio of single and three-phase transformers. TURA-03B has a fast, easy and accurate TTR measurement features for current, voltage and power transformers by its user-friendly software. TURA-03B is a battery-powered device, which allows the user to take measurements even without power supply during on-field tests.

By using ANSI/IEEE C57.12.90 measurement method TURA-03B can make precise results. TURA-03B 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-03B can also measure excitation current, phase angle, polarity and ratio error. Even though TURA-03B has a three-phase cable configuration; the user can make single-phase transformer tests as well.

TURA-03B can detect vector group automatically. TURA -03B 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 and 250 V AC test voltage generation capability. 7-inch colour touch display allows TURA-03B to show all measurement results on a single screen. USB, Bluetooth (Option) and Flash Memory features allow TURA-03B to control, record and store measurement results (up to 100 Test Record).

With the HighTest Data Management Platform (DMP), User can control TURA-03B and analyse measurement results Operators can easily print the measurement results with the 2.28-inch built-in Printer of TURA-03B. Multi-language capability and user-friendly operation menu make it easy to control TURA-03B, even by less trained staff. TURA-03B can control tap changer (raise and lower) via its tap changer outputs. TURA-03B is a light, compact and rugged device with the protection of IP67 (case closed).

In addition to ratio tests, TURA-03B can be used to perform Magnetic Balance Test as well.


  • Turns Ratio Measurement (Single-phase and 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 Battery
  • 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

Download Datasheet



Measurement Parameters Turns Ratio Measurement, Excitation Current, Phase Angle, Polarity, Ratio Error (%), Vector group detection, Magnetic Balance
Ratio Measurement Modes CT Mode, PT Mode (Single-Phase and Three-Phase)
Measurement Method ANSI/IEEE C57.12
Test Voltages CT Mode: 1 V and 4 VPT Mode: 1, 4, 10, 40, 100, 250 V
Ratio Range 0.8 – 50,000
Accuracy Mode Ratio Accuracy
CT Mode (1V -4 V) 0.8000 – 399.99 0.08 %
400.00 – 4000.0 0.1  %
PT Mode(10 V- 250 V) 0.8000 – 5000.0 0.08 %
5000.1 – 12000 0.15 %
12001 – 50000 0.5 %
Phase Angle Measurement 0-360 Degree
Excitation Current 2 A
Accuracy Range Resolution Accuracy
Up to 1.0000 mA 0.2 μA 0.25 % rdg ± 500 μA
1.0000 mA to 10.000 mA 1 μA 0.25 % rdg ± 500 μA
10.000 mA to 100.00 mA 10 μA 0.25 % rdg ± 500 μA
100.00 mA to 2000.0 mA 100 μA 0.25 % rdg ± 500 μA
Power Supply 100-240 V 47/63 Hz
Battery Yes, 14.4 V 3.45 Ah Built-in Battery
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-03B, 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, Bluetooth (factory install option)


TURA-03B, Battery Powered 3 phase Transformer Turns Ratio Tester