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CT Analyzer User Manual
Test results displayed in the Excitation card for IEC 60044-6
Table 8-19: Test results for IEC 60044-6
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.
Kssc
Rated symmetrical short-circuit current factor at accuracy limit with
the selected load.
Ktd
Theoretical transient dimensioning factor.
V-al
Accuracy limiting voltage according to IEC 60044-6 for class TPS
(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 peak
current by 100%).
I-al
Accuracy limiting current according to IEC 60044-6 class TPS (at
V
).
al
E1
User-defined e.m.f. to verify the excitation current at this e.m.f.
Ie1
Max. allowed excitation current at E
E-max
Maximum e.m.f. voltage.
This parameter allows the determination of the working point on
the excitation curve that would be reached with the entered
settings.
Peak instantaneous error at voltage E
^
ε
Peak instantaneous alternating current component error according
^
ε ac
to the standard.
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.
118
1
.
1
.
max
Results displayed for
IEC 60044-6, class
TPS TPX TPY TPZ
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
x
x
x
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