Omicron Lab CT Analyzer User Manual page 114

CT Analyzer User Manual
112
Test results displayed in the Excitation card for IEC 61869-2
Param. Description
V-kn Knee point voltage according to standard.
I-kn Knee point current according to standard.
Ls Saturated inductance.
Lm Non-saturated inductance.
Ts Secondary time constant.
Kr Remanence factor.
ε
Indirect error (acc. to standard).
i
FS Instrument security factor according to
IEC direct measurement method,
61869-2
calculated for nominal and operating burden.
FSi Instrument security factor according to
IEC indirect measurement method,
61869-2
calculated for nominal and operating burden.
ALF Accuracy limiting factor according to
IEC direct measurement method,
61869-2
calculated for nominal and operating burden.
ALFi Accuracy limiting factor according to
IEC indirect measurement method,
61869-2
calculated for nominal and operating burden.
Kx Dimensioning factor (acc. to IEC
accuracy limit with the selected load.
Ek Accuracy limiting voltage according to
IEC (that point on the excitation graph
61869-2
where an increase of the e.m.f. r.m.s. voltage
(core flux) by 10% causes an increase of the
r.m.s. current by 50%).
Ie Accuracy limiting current according to
IEC (at E
61869-2
E1 User-defined e.m.f. to verify the excitation
current at this e.m.f.
Ie1 Max. allowed excitation current at E
Kssc Rated symmetrical short-circuit current factor
at accuracy limit with the selected load.
) at
61869-2
).
k
.
1
1, 2
Results displayed for
IEC 61869-2
protection CTs, class
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x x x x x x x
x x x x x x x
x x x x x x x
x x x x x x x
x x x x x x x
x x
1
1
x x
1
x x
1
x x
x x
x x
x x
x x
x x x
x
x
x
x
x
x
x
x
x