Omicron Lab CT Analyzer, User Manual

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CT Analyzer Test Cards for Multi-Ratio CT Testing
6.4 Resistance, Excitation and Ratio Card for Multi-
Ratio CT Testing
The Resistance card, the Excitation card and the Ratio card display the
detailed test results for the tap combination specified as "Tap in Use" in the
MR-Config. card.
6.5 Test Assessment for Multi-Ratio CT Testing
The automatic test assessment in the Assessment card is always performed for
the full tap combination given by the Number of Taps (e.g. for X1-X5 if number
of taps = 5).
Vb (V)
TCF
ALF
FS
Kssc The result displayed in this column depends on the
standard selected in the
CT-Object card and the type of CT.
V
b
(IEEE C57.13, protection CTs only):
Rated secondary terminal voltage for protection CTs.
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
(IEC 60044-6 only):
Rated symmetrical short-circuit current factor.
Parameter Description