ABB Relion 670 series - User Activity Logging; Activity Logging Protocols (IEC 61850;Syslog); ACTIVLOG Settings for Activity Logging; ACTIVLOG Configuration Settings

Regardless which one of the above two options is selected, busbar differential protection
will behave correctly.
The main CT ratios must also be set. This is done by setting the two parameters CTsec and
CTprim for each current channel. For a 1000/5 A CT, the following settings shall be used:
• CTprim = 1000 (value in A)
• CTsec =5 (value in A).
4.2.2.4 Examples on how to connect, configure and set CT inputs for most
commonly used CT connections
Figure
12 defines the marking of current transformer terminals commonly used around the
world:
In the SMAI function block, you have to set if the SMAI block is
measuring current or voltage. This is done with the parameter:
AnalogInputType: Current/Voltage. The ConnectionType: phase -phase/
phase-ground and GlobalBaseSel.
I
Sec
I
P
r
i
S1 (X1)
P1
(H1)
P2
(H2)
S2 (X2)
P2
(H2)
P1
(H1)
x x
a) b) c)
en06000641.vsd
S2 (X2)
S1 (X1)
IEC06000641 V1 EN
Figure 12: Commonly used markings of CT terminals
Where:
a) is symbol and terminal marking used in this document. Terminals marked with a square
indicates the primary and secondary winding terminals with the same (that is, positive) polarity
b) and c) are equivalent symbols and terminal marking used by IEC (ANSI) standard for CTs. Note that for
these two cases the CT polarity marking is correct!
1MRK 506 369-UUS - Section 4
Analog inputs
Line distance protection REL670 2.2 ANSI 73
Application manual