OMICRON 97
Test cards for Advanced CT Test mode
Specific parameters and settings displayed for IEC 60044-1 metering CTs
The following parameters are only displayed in the CT-Object card if the standard IEC 60044-1 is
selected with the type "Metering CT".
Table 8-6: Parameters and settings for IEC 60044-1 metering CTs
Param. Description Available for IEC 60044-1
metering CTs, class
0.1, 0.2, 0.2s 0.5, 0.5s, 1,
3, 5
FS Instrument security factor acc. to IEC 60044-1.
Possible values: Integer value from 1 to 30 or soft keys n/a, ?
1
,
FS1, FS1.5, FS2, FS5, FS10, FS20 or FS30.
Default: n/a.
According to the standard, it is optional to consider this
parameter for assessment. Therefore, use the default setting
"n/a" for "do not assess", or specify a factor to have the
parameter assessed.
1. If the question mark is entered for this parameter and a new test is started, CT Analyzer automatically tries to determine the
value using its integrated guesser function (see chapter 9 on page 138).
xx
ext. Ipn Extended current rating.
Possible values: 100 to 400% or soft keys 120%, 150%, 200%,
300%, 400%.
Default: 120%.
xx
ext. VA Extended burden range for ratio error and phase displacement
assessment according to IEC 61869-2.
The assessment of the ratio error and the phase displacement
is usually performed down to a burden of 12.5% of the nominal
burden. If the "ext. VA" parameter is set to "on", the
assessment is performed for an extended range down to a
burden of 1VA if the limit of 12.5% results in a burden higher
than 1VA.
Possible values: Soft keys On or Off.
Default: On.
x
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