1 Three channel transformer DC resistance testerOverview

For the power system, transformers are the core equipment in the system, so the long-term and reliable operation of transformers is related to the stability and reliability of the entire system.

The DC resistance of transformers is a necessary test item for semi-finished and finished products in transformer manufacturing, factory testing, installation, handover testing, and preventive testing by the power department. It can effectively detect manufacturing defects such as material selection, welding, loose connection parts, missing strands, and broken wires of transformer coils, as well as hidden dangers after operation. In order to meet the needs of rapid measurement of transformer DC resistance, our company has developed a transformer DC resistance tester using our own technological advantages. This instrument is a setThree phase test (Yn, Y, △)andDemagnetization functionThe new generation rapid tester integrated in one is an ideal device for measuring the DC resistance of large power transformers. The screen adopts a true color high-resolution industrial display screen, full touch operation, with Chinese menu prompt function, easy and intuitive operation, fast testing speed, high accuracy, and wide range.

2 Three channel transformer DC resistance testerpackage contents

After receiving the shipping packaging box, open the box and check for any damage. If the shipping packaging box is damaged or the cushioning material has pressure marks, please notify the shipping company and the nearest sales office of our company.

Please check if you have received the following items in the entire set of equipment:

Standard configuration:

√ 1 tester

√ 1 set of test lines (1 each in yellow, green, red, and black)

√ 1 three core power cord

√ 1 grounding wire

√ 3 insurance tubes

√ 2 rolls of printing paper

√ 1 printed user manual

√ 1 factory test report

√ 1 certificate of conformity and warranty card

3 Three channel transformer DC resistance testerMain functions and features

3.1 For Yn, Y, and △ windings, three-phase measurement can be used to test and calculate the three-phase unbalance rate.

3.2 Test the maximum output current of the power supply20A， The testing range is 0-200 Ω, which meets the testing requirements of the vast majority of transformers; And it has demagnetization function, which can reduce the harm of transformer residual magnetism during high current testing.

3.3 The testing process can automatically calculate 5S and 1The resistance value change rate within 5 seconds and 30 seconds can assist testers in determining the stability of test data and prevent misreading of data.

3.4 The instrument has multiple protection functions such as back electromotive force protection, wire breakage protection, and power-off protection.

3.5 The instrument is equipped with a thermal printer, which stores data locally00 records, supporting massive storage on USB drives.

3.6 Industrial grade 7-inch true color large screen display, with a fresh and simple display style design and full touch operation, creating a comfortable and convenient human-computer interaction experience for you.

4 Three channel transformer DC resistance testerMain technical indicators

5 Three channel transformer DC resistance testerPanel Introduction