The transformer short-circuit impedance tester adopts the popular ARM processor, 168M main frequency and 128M memory, which can be expanded with 4G memory card. The LCD adopts a 7-inch high-definition color touch screen, combined with the emwin display interface, which makes the instrument interface friendly and easy to operate, and can be operated on a full touch screen without a keyboard. The instrument can support the database and can be exported through a USB flash drive or transmitted to the background computer through a data cable.

The circuit design of the instrument is exquisite and the idea is unique, which makes it superior in performance, powerful in function, small in size and light in weight. It can not only test the impedance load parameters of the transformer, but also measure the harmonic content and waveform on site. The instrument is powerful and easy to operate, providing a reliable basis for transformer parameter analysis.

I. Wiring And Precautions 

When using the instrument, please follow the wiring and operation of this instruction manual.

1． The grounding terminal or the grounding terminal in the power cord should be reliably grounded nearby.

2． Please enter the correct setting parameters before the test. Enter the storage number to save the test results under this record number, and then set various parameters according to the parameters of the transformer under test. After setting, click the save the modify button to save and enter the test interface . parameter (impedance or parameter), click the start button, and then slowly increase the test voltage to complete the test. At the end of the test, you can click the end button and save the test record to complete the test.

3． The instrument is fully touch-screen operated, please do not bump it.

II. Main Functions And Features

1. The instrument adopts 7-inch true-color LCD, which can measure electrical parameters

such as voltage, current, angle, power, etc., and can display the vector diagram of voltage and current, which is clear and intuitive on the same screen.

2. It can measure the impedance, reactance, resistance, impedance voltage percentage and other parameters of single-phase and three-phase transformers.

3. The instrument has a harmonic analysis function, which can measure the 1-24th harmonic content of the voltage and current applied to the transformer, and can display bar graphs and voltage and current waveforms.

4. Built-in three-phase inverter power supply , the impedance of the three-phase transformer can be tested without three-phase power supply and voltage regulator on site , which is convenient for on-site use .

5. With data storage and data browsing functions, the instrument supports DBF database, which can store test data or browse test records according to user needs. The instrument also supports USB export function, which can export test data through USB, and the database supports the opening method of excel spreadsheet, which is convenient for editing, printing or archiving

6. It adopts 7-inch true-color touch screen operation, emwinGUI interface, built-in 128M memory (extensible 4G memory card), supports Chinese character input, and is easy to operate.

7. Small size, light weight, accurate measurement, no power-off calendar, clock function, can store test time at any time.

8. The built-in printer of the instrument is convenient for on-site printing of test records.

III. Main Specifications

1. Voltage measurement range: 0-20 phase voltage,

2. Current measurement range: 0-2A.

3. Measurement quantity Refined  Accuracy: 0.2% (power factor 1.0-0.2), 1% (power factor 0.2-0.01)

4. Working power supply: AC220V±15%

5. Working temperature: -10℃-40℃

6. Ambient humidity: 10%-85%

7. Volume: 320mm×230mm×140mm

8. Weight: 3kg (excluding test wires)