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Parameters assessed for IEC 60044-6
Table 8-30: Parameters assessed for IEC 60044-6
Param.
Description
Class
Accuracy class according to standard.
Δϕ
Phase deviation.
ε
Current ratio error.
εt
Turns ratio error (included in class).
^
Peak instantaneous error at voltage E
ε
Peak instantaneous alternating current component error
^
ε ac
according to the standard.
Ts
Secondary time constant.
Kr
Remanence factor.
Ktd * Kssc
Transient dimensioning factor (K
symmetrical short-circuit current factor (K
K * Kssc
Dimensioning factor (K) multiplied by the rated symmetrical
short-circuit current factor (K
V-al
Rated equivalent excitation limiting secondary voltage.
I-al
Accuracy limiting secondary excitation current.
Rct
Secondary winding resistance.
Rprim
Primary winding resistance.
OMICRON
Test cards for Advanced CT Test mode
.
max
) multiplied by the rated
td
).
ssc
).
ssc
Parameter assessed
for IEC 60044-6
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
133
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