Omicron CT SB2 - Page 134

CT Analyzer User Manual
132 OMICRON
Kx Dimensioning factor (according to
IEC 60044-1 class PX).
x
Ie Accuracy limiting secondary excitation
current.
x
Ie1 Max. allowed secondary excitation current
at E
1
.
x
Rct Secondary winding resistance. x x x x
Rprim Primary winding resistance. x x x x x x x
Table 8-29: Parameters assessed for IEC 60044-1 metering CTs
Param. Description Parameter assessed
for IEC 60044-1
metering CTs
0.1, 0.2, 0.2s,
0.5, 0.5s, 1
3, 5
Class Accuracy class according to standard. x x
Δϕ Phase deviation. x
ε Current ratio error. x x
FSi Instrument security factor (indirect meas. method). x x
Rprim Primary winding resistance. x x
Table 8-28: Parameters assessed for IEC 60044-1 protection CTs (continued)
Param. Description Parameter assessed for IEC 60044-1
protection CTs
standard classes OMICRON
extension
5P 10P 5PR 10PR PX 2P, 3P,
4P, 6P
2PR, 3PR,
4PR, 6PR