Transformer Short Circuit Impedance Tester VATST800
Transformer Short Circuit Impedance Tester

The winding mechanical deformation of transformers can occur during transportation, installation, or high current events in operation. Such changes can be detected by comparing before and after short circuit impedance measurement values.

Transformer Short Circuit Impedance Tester VATST800 is used to measure short circuit impedance and other associated parameters of power transformers according to standard IEC60076-5-2006.


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1)Able to measure the short circuit impedance of transformers without external voltage regulator

2)Useful in detecting and diagnosing winding deformation

3)Able to perform short circuit impedance test in single or three-phase transformers

4)Auto or manual test mode selectable

5)Able to measure zero sequence impedance and inductance

6)Has output current limiting function for any impedance sample test.

7)The test results can be save into instrument or printed out via built-in thermal printer, also can be exported via USB port.


Measurement Section

Voltage measuring range: 5~400V

Measuring accuracy: 0.2%

Current measuring range: 0.1~20A

Measuring accuracy: 0.2%

Short circuit impedance measurement: 0~100%


Power Supply: customized (AC220V/230V/120V/127V, 50Hz/60Hz optional)

Dimensions: 405 x 330 x 172 mm (15.95” x 12.99” x 6.77”)

Weight: 8kg (17.64 lb)

Environmental Conditions

Application field: The instrument is intended for use in medium and high-voltage substations and industrial environments.

Storage temperature: -20°C to 70°C (-4°F to +158°F)

Operating temperature: -20°C to +50°C (-4°F to +122°F)

Humidity: < 95% RH, non-condensing

Safety Qualifications and EMC

Safety: designed in accordance with IEC61010-1, 2006/95/EC

EMC: 2004/108/EC


Transformer Short Circuit Impedance Tester TST800 is ideal tool for measuring short circuit impedance of power transformers for winding deformation diagnosis.

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