JYR-10C+ DC winding resistance tester Demo Video:
Why DC Winding Resistance Testing of Transformers is Needed?
DC winding resistance testing is considered another essential routine screening tool. It represents issues such as loose, defective or incorrect connections that cause enough transformer failures each year to be considered a failure category of its own. Winding resistance testing may also reveal problems with transformer tap-changers, on-load (OLTC) and/or de-energization (DETC) – the main category of components that fail in transformers, which according to some statistics leads the way .
DC winding resistance testing is regarded as an essential routine item for transformer testing, it indicates problems such as winding 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.
JYR-10C+ DC winding resistance tester Function Introduction:
● The testing range is 0Ω～20kΩ; With automatic temperature switching function.
● The Max. output current is 20A, such current output can test all inductive DC resistance below 110kv.
● The Max. output voltage is 24V, that will make sure the high testing speed.
● With DC and AC switch which will be suitable for all inductive load measurements such as transformer, PT, CT, etc.
● Equippted with permanent calendar, 100 sets of data can be stored, temperature automatic converting function, the data will not be loosen as power failure.
● With large color touch screen, the data is clear and easy to read.
● With RS485 communication interface for PC control.
● With U disk storage interface for exporting datas and thermal printer for printing.
● With the anti-arcing protection function for the inductive tested products.
● With AC380V misconnection protection function to avoid the damage by incorrect operation.
● With the discharging alarm by sound and the discharging indicating clearly.
● With inner set high efficiency power source, no fan can avoid the dusts coming in which can increased the life time.
TECHNOLOGY SPECIFICATION:
Deployment
10C+
Output current
20A,10A,3A,1A,300mA,100mA,20mA, Auto
Test range
0~20kΩ
Accuracy
0.2%±1μΩ
Minimum resolution
0.1μΩ
Power supply in operation
AC220V±10%, 50Hz±1Hz
Temperature in operation
-20~40℃
Relative humidity
≤80%RH, No forming dew
Volume
Length 395mm Width 240mm Height 250mm
Net weight
8 kg
Application range
Suitable for all levels of inductive resistance measurements of 110kV and below
