ABB RER670 - Examples on How to Connect, Configure and Set CT Inputs for most Commonly Used CT Connections

Transformer and
Line protection
Transformer
Line
Setting of current input
for transformer functions:
Set parameter
CTStarPoint with
Transformer as
reference object.
Correct setting is
"ToObject"
ForwardReverse
Definition of direction
for directional
line functions
Setting of current input
for transformer functions:
Set parameter
CTStarPoint with
Transformer as
reference object.
Correct setting is
"ToObject"
Setting of current input
for line functions:
Set parameter
CTStarPoint with
Line as
reference object.
Correct setting is
"FromObject"
IED
IEC05000462 V2 EN-US
Figure 10: Example how to set CTStarPoint parameters in the IED
4.2.2.4 Examples on how to connect, configure and set CT inputs for most
commonly used CT connections
SEMOD55055-296 v7
Figure
11 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/V
oltage. The ConnectionType: phase -
phase/phase-earth and GlobalBaseSel.
Section 4 1MRK 506 375-UEN A
Analog inputs
48 Railway application RER670 2.2 IEC
Application manual