Transformer winding DC resistance tester

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 new generation rapid testing device that integrates magnetic assisted testing, three-phase testing (Yn, Y, △), and demagnetization functions

　　1Main functions and features

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

1.2 The maximum output current of the test power supply is 20A, and the maximum test range is 25k Ω, which meets the testing requirements of the vast majority of transformers; And it integrates magnetic assistance and demagnetization functions to meet various on-site testing needs.

1.3 The testing process can automatically calculate the resistance value change rate within 5 seconds, 15 seconds, and 30 seconds, which can assist the testing personnel in judging the stability of the test data and prevent misreading of the data.

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

The 1.5 instrument is equipped with a thermal printer, which stores 200 pieces of data locally and supports massive storage on a USB drive.

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

　　2Main technical indicators

technical indicators
output current	Single phase 20A, 10A, 5A, 1A, 0.1A, 10mA,<1mA Three phase 10A+10A, 5A+5A, 1A+1A, 0.1A+0.1A
measurement range	Single phase 20A gear 0.5m Ω～ 1 Ω 10A gear 1.0m Ω～ 2 Ω 5 A档 10 mΩ～ 4 Ω 1 A 档 0.1Ω～ 20Ω 0.1A 档 2.0Ω～ 200Ω 10mA 档 50Ω～ 2kΩ <1mA档 500Ω～ 25kΩ three-phase 10A + 10A 档 0.5mΩ ～ 0.8 Ω 5 A + 5 A 档 10 mΩ ～ 1.6 Ω 1 A+1 A gear 0.1 Ω~8.0 Ω 0.1A+0.1A gear 2.0 Ω~80 Ω
Accuracy	± (reading x 0.2%+2 words)
working power supply	AC220V±10%, 50/60Hz
Operating temperature	-10℃～50℃
relative humidity	<90%, no condensation
Instrument volume	400×315×223mm
Instrument weight	9kg