Omicron CT SB2 User Manual

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

Omicron CT SB2 Specifications

General

Brand	Omicron
Model	CT SB2
Category	Measuring Instruments
Language	English