Automatic TTR Tester

Product Overview

TRANSFORMER TURN RATIO TESTER is applied to measure the voltage ratio of three or single phase transformer. All the data and test results are showed on a 320*240 LCD. All the test results could be printed by the micro printer or saved on the storage of the tester. The tester has a good performance on auto protection and anti-disturb.

Application Scenarios

1. Power Transformer Manufacturing:Quality control during production of power transformers.
2. Electrical Substation Maintenance:Routine testing of transformers in utility substations.
3.Transformer Repair and Rewinding Shops:Validating repair quality after rewinding or reassembly.
4.Industrial Plant Electrical Systems:Testing distribution transformers in factories, mines, and large facilities.
5.Renewable Energy Facilities:Commissioning and maintenance of transformers in solar/wind farms.
6.Railway and Traction Power Systems:Testing transformers in locomotives and railway substations.

1. Input single power, internal digital combination standard sine wave test source output

2. Phase angle measurement function: measure the phase angle between high voltage side and low voltage side. Measure the turn ratio and angle of "Non integral point" transformer.

3. It can conduct single-phase measurement and three-phase winding automatic test. Three phase turn ratio value, phase angle value, error, tapping position, tapping value can be measured for once.It also can identify connecting group number automatically.

4.Testing results can be displayed in the form of digit and hexagon vector diagram, which makes transformer connecting group can be made out obviously.

5. With blind test function: There is no need to choose connecting method and group. When measuring Y/△,△/Y transformer, no external short-circuit is needed, connecting method can be shifted automatically according to the chosen testing contents.

6. With tapping test function: TTR and TTR error in the position of each tapping switch can be gauged quickly. Just input rated TTR once, instead of inputing over and over again, TTR error in tapping position can be calculated.

7. With functions of turns ratio measurement and voltage TTR measurement.

8. With 5.6 inch LCD, the effect of data & figure display is visualized and fine.

9. With small size and light weight, it is easy to carry.

10. With built-in high capacity chargeable lithium battery. Test can be conducted without any power supply on site, and once the battery is charged fully, it can make measurement for more than 500 times continuously.

1. Environmental Conditions

Temperature:0°C to 50°C (operating range)

Humidity:<85% RH (non-condensing)

Altitude:<2000 meters above sea level

Environment:Dry, clean, and free from corrosive gases, dust, or vibration

2. Power Requirements

Supply Voltage:AC 100–240V ±10%, 50/60 Hz, or DC power (if battery-operated)

Grounding:Proper earth grounding mandatory for safety and accuracy

Stability:Stable power supply without fluctuations or surges

1. Standard Test Leads & Connectors

HV (High-Voltage) Test Leads(set of 2)

LV (Low-Voltage) Test Leads(set of 2)

Alligator Clips(insulated, 4–6 units)

Pin Probes(for terminal blocks)

Grounding Cablewith secure clamp

2. Power & Data Accessories

AC Power Cord(region-specific plug)

Rechargeable Battery Pack(if applicable)

USB Cable(for data export/software)

Charging Adapter(AC to DC)

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