The following parameter shall be set for every current transformer connected to the IED:
Table 8:
CT configuration
Parameter description
Parameter name
Range
Default
Rated CT primary current in A
CTPRIMn
n = channel number
from 0 to 99999
3000
This parameter defines the primary rated current of the CT. For two set of CTs with ratio
1000/1 and 1000/5 this parameter is set to the same value of 1000 for both CT inputs. The
parameter
CTStarPoint can be used in order to reverse the direction of the CT. This might be
necessary if two sets of CTs have different star point locations in relation to the protected
busbar.
For main CTs with 2A rated secondary current, it is recommended to connect the secondary
wiring to the 1A input.
Take the rated permissive overload values for the current inputs into
consideration.
5.3
Reconfiguring the IED
M11728-2 v2
I/O modules configured with PCM600 (BIM, BOM or IOM) are supervised.
I/O modules that are not configured are not supervised.
Each logical I/O module has an error flag that indicates signal or module failure. The error flag
is also set when the physical I/O module of the correct type is not detected in the connected
slot.
Section 5
1MRK 502 067-UEN B
Configuring the IED and changing settings
50
Commissioning manual
