Supervision Of Input/Output Modules - ABB Relion 650 Series Commissioning Manual

Section 5
Configuring the IED and changing settings
Table 5:
Parameter description
Rated CT primary current in A
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
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.
5.3

Supervision of input/output modules

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.
38
CT configuration
Parameter name
CTPRIMn
n = channel number
CTStarPoint can be used in order to reverse the direction of the CT. This might be
Take the rated permissive overload values for the current inputs into
consideration.
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Range
from 0 to 99999
1MRK 505 385-UEN C
Default
3000
M11728-2 v3
Breaker protection REQ650
Commissioning manual