49
Application
The TRTapCheck test card displays the measurement results in two display
fields and a table:
3.5.2 Performing Winding Resistance Measurements
For the available modes see 3.4.2 "Performing Measurements with TRRatio" on
page 42. The only difference in the fully automatic mode is that the CPC 100
automatically performs the Auto Keep Result algorithm.
No. of taps: Indicates the number of taps of the
transformer
Tolerance: Tolerance of the deviation in percent
t:
Settling time
IDC: Actual test current from 6 A DC
output measured at IAC/DC input
VDC: Voltage measured at the 10 V DC
input
Tap (in table): Displays the transformer tap identifier
and tap number for the measurements
in the respective line of the table.
Rmeas: Actual resistance, calculated from
VDC / IDC
Dev. in %: Deviation in % between the maximum
and the minimum measured values
evaluated within the settling time ( t).
Rref: Temperature-corrected resistance
value, that is, the resistance value at
an actual specimen temperature of
Tref.
Ripple: Samples and holds the biggest
measured current ripple that occurred
in the measuring cycle. It is indicated
in % with reference to IDC.
Slope: Samples and holds the biggest
measured steepness of the falling
edge of the actual test current that
occurred in the measuring cycle.
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General