Omicron CT SB2 User Manual page 98

CT Analyzer User Manual
Specific parameters and settings displayed for IEC 60044-1 protection CTs
The following parameters are only displayed in the CT-Object card if the standard IEC 60044-1 is
selected with the type "Protection CT".
Table 8-5: Parameters and settings for IEC 60044-1 protection CTs
Param. Description
ALF Accuracy limiting factor acc. to IEC 60044-1.
Possible values: Integer value from 1 to 300 or soft keys ?
5, 10, 15, 20 or 30.
Default: ?.
Rct Specified secondary winding resistance.
Possible values: 0 to 3000 ohms or soft key ?
Default: ?
Ts Specified secondary time constant.
Possible values: 0.000 to 100.0s or soft key ?
Default: 100s.
Kx Dimensioning factor acc. to IEC 60044-1, PX.
Possible values: 1 to 300 or soft key ?
Default: ?.
Ek Rated knee point e.m.f.
Possible values: 0 to 40000V or soft key ?
Default: ?.
Ie Accuracy limiting current acc. to IEC 60044-1, PX.
Possible values: 0.03mA to 30000mA or soft key ?
Default: ?.
E1 User-defined e.m.f. to verify the excitation current at this
specific e.m.f.
Possible values: 0.1 to 40000V or soft key ?
Default: ?.
Ie1 Maximum allowed excitation current at E
Possible values: 0.03mA to 30000mA or soft key ?
Default: ?.
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).
2. If the question mark is entered, half the voltage entered or measured for E
3. If the question mark is entered, CT Analyzer uses the excitation current measured at the voltage value defined at E
case, the assessment for this parameter is OK.
96
1
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1
.
1
.
1
.
1
.
1
.
2
.
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1
3
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is used.
k
Available for IEC 60044-1
protection CTs, class
2P, 3P, 2PR, 3PR,
4P, 5P, 4PR, 5PR,
6P, 10P 6PR, 10PR
x x
x
x
OMICRON
PX
x
x
x
x
x
x
. In this
1