Test Settings And Results - Omicron CT SB2 User Manual

CT Analyzer User Manual
8.5.3

Test settings and results

The following settings are required to perform a winding resistance test.
Table 8-15: Test settings for secondary winding resistance measurement
Parameter Description
T-meas Winding temperature of the CT at the time of measurement.
Value used:
Ambient Temperature defined in the Settings (main menu).
If this temperature is not set correctly, the reference resistance value (R
temperature will not be calculated correctly.
T-ref Reference temperature, i.e, temperature the CT is specified for.
Value used:
Reference temperature defined in the Settings (main menu).
The winding resistance at reference temperature is calculated from the winding
resistance measured at ambient temperature (T
temperature.
The following parameters show the results of the winding resistance test after the test is finished.
Table 8-16: Test results for secondary winding resistance measurement
Parameter Description
I-DC Current used for measurement. Selected automatically, cannot be changed by the user.
Secondary winding resistance measurement only:
If I
sn
If I
sn
Maximum value: 5 A.
Primary winding resistance measurement only:
Maximum value: 10 A.
V-DC Measured voltage.
R-meas Measured resistance at ambient temperature.
R-ref Reference resistance (temperature-compensated resistance, compensated to T
114
is 0.2 A or higher, I is automatically set to I
DC
is lower than 0.2 A, I is automatically set to 0.2 A.
DC
) and the specified reference
meas
.
sn
) at reference
ref
).
ref
OMICRON