6
I. Summarizes
The measurement of power transformer winding DC resistance
is a very important test items, in the "power equipment test
procedures in the", followed by ranking in second place for the
transformer test project, the "Regulations" provisions in transformer
changeover, overhaul, repair, alteration points joint position, fault
checking and pre trial etc. must be measurement of power
transformer winding DC resistance. Its purpose is:
Check the quality of welding wire and wire windings;
Check the location of each switch contact is good;
Check the winding or lead wire is broken at;
Correctness check parallel branches, the existence of
winding consists of several parallel wire wound into one or several
broken;
Inspect layer, interturn short phenomenon.
Microcomputer control, large screen backlit LCD screen
display, simple operation, clear display and friendly man-machine
interface, measurement and instrument working state prompt fully
clear without operator memory too many rules in the application of
the instrument interface design; current source is adopted for linear
compensation, stability test, high measuring accuracy, fast and
