Omicron CT SB2 User Manual page 244

CT SB2 User Manual
The following table lists the ratio results displayed in the MR-Results card.
Table 9-5: Ratio results displayed in the MR-Results card
Column Description
Ipn : Isec (A) This column shows for each tap combination the measured current ratio I
N This column shows for each tap combination the measured winding ratio.
Rat. (%) This column shows for each tap combination the measured ratio error in %.
Pol. (') This column shows for each tap combination the measured phase error (polarity) in
minutes or degrees. Switch the unit using the Pol. in Degrees or Pol. in Min. soft
Pol. (°)
key.
The following table lists the excitation results displayed in the MR-Results card.
Table 9-6: Excitation results displayed in the MR-Results card
Column Description
Rct (mΩ) Secondary winding resistance.
Vkn (V) Knee point voltage.
Ikn (mA) Knee point current.
Vb (V) The result displayed in this column depends on the standard selected in the
CT-Object card and the type of CT.
TCF
ALF V (IEEE C57.13, protection CTs only): Rated secondary terminal voltage for
b
protection CTs.
FS
Kssc
TCF (IEEE C57.13, metering CTs only): Transformer correction factor for metering
CTs.
ALF (IEC 60044-1, protection CTs only): Accuracy limiting factor for protection CTs.
FS (IEC 60044-1, metering CTs only): Instrument security factor for metering CTs.
K
ssc
56
(IEC 60044-6 only): Rated symmetrical short-circuit current factor.
/ I .
pn sec
OMICRON