Omicron CT SB2 User Manual

OMICRON 135
Test cards for Advanced CT Test mode
Table 8-32: Parameters assessed for IEC 61869-2 transient protection CTs
Param. Description Parameter assessed for
IEC 61869-2
transient protection CTs
TPX TPY TPZ
Class Accuracy class according to standard. x x x
Δϕ Phase deviation. x x x
ε Current ratio error. x x x
Ktd * Kssc Transient dimensioning factor (K
td
) multiplied by the rated
symmetrical short-circuit current factor (K
ssc
).
xxx
^
ε
Peak instantaneous error at voltage E
max
.
xx
^
εac
Peak alternating error component according to the standard.
x
Ts Secondary time constant. x
Kr Remanence factor x x
Rct Secondary winding resistance. x x x
Rprim Primary winding resistance. x x x
Table 8-33: Parameters assessed for IEC 61869-2 metering CTs
Param. Description Parameter assessed
for IEC 61869-2
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

Omicron CT SB2 Specifications

General

Brand	Omicron
Model	CT SB2
Category	Measuring Instruments
Language	English