ZXR-40A
- 7 -
2 0 0 7 . 0 1 . 0 1
Tap
R
3 5 1 . 2
mΩ
Store
Current tap:
0 1
Re-test
Exit
1 4 : 0 2 : 5 1
Now, the dc resistance tester starts to display the resistance value of the winding under test and
such value gradually becomes stable. At this time, press the Tap button to adjust and set the
current tap value or winding name so as to mark the measurement result. After the Tap button is
pressed down, the multi-functional key on the right becomes “▲”“▼”“
”“OK” and
“Cancel”, and the tap setting dialogue box is ejected. After setting, press “OK” button to save it
and press “Cancel” button to modify it. Then, press “Store” and “Print” button to save or print
the measurement result. In case of any doubt about the data, press “Retest” button to carry out
the measurement and calculation again.
When measuring the on-load voltage changing transformer, after the testing data of one tapping
position becomes stable, the on-load tapping switch may be switched to the next tapping position,
without discharging to conduct the measurement over again. At this time, the resistance value of
the winding will change gradually until it becomes stable. You may also press “Re-test” button to
quickly refresh the data. Repeat the above-mentioned procedure until all the tapping tests are
completed.
③
Three-phase measurement:
The three-phase measurement applies to the windings of YN star connection with neutral lead.
For the windings of yn connection, since difference exists between the three-phase and
single-phase measurement results due to the effect of copper bus connected, single-phase
