Omicron Lab CT Analyzer, User Manual

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CT Analyzer User Manual
98
Specific parameters and settings displayed for IEEE C57.13
protection CTs
The following parameter is only displayed in the CT-Object card if the
IEEE C57.13 standard is selected with the type "Prot. CT".
Param. Description Available for
IEEE C57.13, class
C T X K
1
1. Acc. to IEEE C57.13 (1993)
Vb * Rated secondary terminal voltage.
If the IEEE C57.13 standard is selected with the type
"protection CT" (class C, K or T), the VA and Cos
ϕ
parameters are not accessible to the user. In this case, the
user has to enter the terminal voltage V
b
instead.
Possible values: Integer values from 10 to 1200V or soft
keys
?
2
, 10V , 20V , 50V , 100V , 200V , 400V or 800V .
Default: ? or ?*.
* 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).
2. 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).
x x x
Vk
Vk1
User-defined measuring point.
User-defined measuring point 1.
Possible values: Integer values from 0.1V to 20.000V or
soft key
?
1
.
Default: ?.
x x
Ik
Ik1
User-defined measuring point.
User-defined measuring point 1.
Possible values: Integer values from 0.03mA to
30.000mA or soft key
?
2
.
Default: ?.
x x
RE(20*Isn) Ratio error at 20 * I
sn
.
Possible values: Integer values from 1% to 99%.
Default: 10%.
x
Rct Specified secondary winding resistance.
Possible values: 0 to 3000 ohms or soft key ?
1
.
Default: ?
x