Omicron Lab CT Analyzer, User Manual

Page: 85 / 254

83
The CT Analyzer Test Cards
Common Parameters and settings displayed for all standards,
CT types and classes
The table below lists all parameters and settings that are displayed for all
standards, CT types and classes.
In addition to these common parameters, specific additional parameters are
displayed in the
CT-Object card depending on the selected standard, CT type
(protection or metering CT) and class. For these specific parameters, please
refer to the tables on pages 87 to 99.
Parameter Description
I-pn Rated primary current.
Possible values: 1 to 99000A or ?
1
soft key. Default: ?.
I-sn Rated secondary current.
Possible values: 0.0001 to 25A or soft keys
1.0 , 2.0 , 5.0 , 1.0A/ √ 3 , 2.0A/ √ 3 ,
5.0A/
√
3 or ?
1
.
Default: ?.
Standard Standard according to which the test has to be performed.
Possible values: Soft keys
IEC 60044-1 , IEC 60044-6 , IEEE C57.13 or
IEC 61869-2
Default: Standard defined in the default test settings.
Note: Using the IEEE C57.13 standard for transformers with gapped cores
may possibly deliver incorrect results.
P/M * Definition of CT type: Protection or metering CT.
Possible values: Soft keys Prot. CT , Meter. CT or ?
1
.
Default: As defined in the default test settings.
* This parameter is relevant for assessment. No automatic assessment is
available if the user did not enter data for this parameter prior to the test (see
page 82).