Omicron Lab CT Analyzer User Manual page 89

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".
Param. Description
ALF Accuracy limiting factor acc. to IEC 60044-1.
Possible values: Integer value from 1 to 300 or soft keys
1
? , 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 20000 or soft key ?
Default: ?.
Ie Accuracy limiting current acc. to IEC 60044-1, PX.
Possible values: 0.03mA to 30A 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 20000V 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, the CT Analyzer
automatically tries to determine the value using its integrated guesser function (see chapter 7 on
page 131).
2. If the question mark is entered, half the voltage entered or measured for E
3. If the question mark is entered, the CT Analyzer uses the excitation current measured at the
voltage value defined at E
1
1
1
.
1
.
1
2
.
.
1
. In this case, the assessment for this parameter is OK.
1
The CT Analyzer Test Cards
Available for IEC 60044-1
protection CTs, class
2P, 3P, 2PR, 3PR,
4P, 5P, 4PR, 5PR,
6P, 10P 6PR, 10PR
x x
x
.
x
.
.
3
.
is used.
k
PX
x
x
x
x
x
x
87