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Test results displayed in the Excitation card for IEC 60044-1
Table 8-18: Test results for IEC 60044-1
Param.
Description
V-kn
Knee point voltage (acc. to standard) of the topmost knee
point found.
I-kn
Knee point current (acc. to standard) of the topmost knee
point found.
Ls
Saturated inductance.
Lm
Non-saturated inductance.
Ts
Secondary time constant.
Kr
Remanence factor.
ε
Indirect error (acc. to standard).
i
ALF
Accuracy limiting factor according to IEC 60044-1 direct
measurement method, calculated for nominal and operating
1
burden.
ALFi
Accuracy limiting factor according to IEC 60044-1 indirect
measurement method, calculated for nominal and operating
1
burden.
FS
Instrument security factor according to IEC 60044-1 direct
measurement method, calculated for nominal and operating
1
burden.
FSi
Instrument security factor according to IEC 60044-1 indirect
measurement method, calculated for nominal and operating
1
burden.
Kx
Dimensioning factor (acc. to IEC 60044-1 class PX) at
accuracy limit with the selected load.
Ek
Accuracy limiting voltage according to IEC 60044-1 for
class PX (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%).
Ie
Accuracy limiting current according to IEC 60044-1 class
PX (at E
k
E1
User-defined e.m.f. to verify the excitation current at this
e.m.f.
Ie1
Max. allowed excitation current at E
1. If CT Analyzer is not able to measure up to the actual value, the prefix ">" is displayed to indicate that the measurement value
is larger than the displayed value.
OMICRON
).
Test cards for Advanced CT Test mode
.
1
Results displayed for
IEC 60044-1
protection CTs
metering
CTs
...P
...PR PX
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
x
117
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