Omicron CT SB2 User Manual page 104

CT Analyzer User Manual
Table 8-8: Parameters and settings for IEC 61869-2 protection CTs (continued)
Param. Description
Ktd * Rated transient dimensioning factor according to
the name plate.
Only displayed if parameter "Spec." is "by Ktd".
Possible values: 1.0 to 2043 or soft key ?
Default: ? or ?*.
* If displayed, 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 92).
Tp * Primary time constant.
Only displayed if parameter "Spec." is "by Duty".
Possible values: 0.000 to 5.000s or soft keys
20ms, 40ms, 60ms, 80ms, 100ms or 120ms.
T depends on K as follows:
p
Default: ? or ?*.
* If displayed, 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.
Duty Specified duty cycle.
Only displayed if parameter "Spec." is "by Duty".
Using the soft keys, two different energizing cycles
can be selected: C-O or C-O-C-O
Default: C-O.
t-al1 * Permissible time to accuracy limit for first
energizing period of the duty cycle.
Only displayed if parameter "Spec." is "by Duty".
Possible values: 0.000 to 5.000s and max. t
soft key 40ms.
Default: ? or ?*.
* If displayed, 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.
102
Available for IEC 61869-2 protection
CTs, class
protection
...P
1
.
K 1 –
------------ -
T =
p
ω
or
1
transient
protection
...PR PX PXR TPX TPY TPZ
x
x
x
x
x x
x x
x x
x x
OMICRON