Omicron Lab CT Analyzer, User Manual

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