DC winding resistance testing is regarded as another essential routine screening tool. It indicates problems such as loose, defective or incorrect connections, which cause enough transformer failures each year to be regarded as a failure category of its own. Winding resistance tests may also reveal problems with a transformer’s tap changer (s), on-load (OLTC) and/ or de-energized (DETC) – a major and, by some statistics – leading, component category that fails in transformers.
FUNCTION INTRODUCTION:1.Automatic magnetic assist.
Demo video for JYR-20S https://www.youtube.com/watch?v=KIGKWSp8dRI
5. Protection function from misconnection 380V power, power off and back EMF, discharging indication is clear.
|Output current||0 ~ 10A||0 ~ 20A|
|Power supply in operation||AC220V±10%, 50Hz±1Hz|
|Temperature in operation||-20~40℃|
|Relative humidity||≤80%RH, No forming dew|
|Volume||Length 410mm Width 330mm Height 200mm|