OMICRON 119
Test cards for Advanced CT Test mode
Test results displayed in the Excitation card for IEC 61869-2
Table 8-20: Test results for IEC 61869-2
Param. Description Results displayed for
IEC 61869-2
protection CTs, class
metering
CTs
...P
...PR
PX
PXR
TPX
TPY
TPZ
V-kn Knee point voltage according to standard. x xxxxxx x
I-kn Knee point current according to standard. x xxxxxx x
Ls Saturated inductance. x xxxxxx x
Lm Non-saturated inductance. x xxxxxx x
Ts Secondary time constant. x xxxxxx x
Kr Remanence factor. x xxxxxx x
ε
i
Indirect error (acc. to standard).
xx 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
xx
ALFi Accuracy limiting factor according to IEC 61869-2 indirect
measurement method, calculated for nominal and operating
burden.
1
xx
Kx Dimensioning factor (acc. to IEC 61869-2) at accuracy limit
with the selected load.
xx
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%).
xx
Ie Accuracy limiting current according to IEC 61869-2 (at Ek). x x
E1 User-defined e.m.f. to verify the excitation current at this
e.m.f.
xx
Ie1 Max. allowed excitation current at E
1
.
xx
Kssc Rated symmetrical short-circuit current factor at accuracy
limit with the selected load.
1, 2
xxx
Ktd
Theoretical transient dimensioning factor.
3
xxx
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