ABB RELION RET670, Applications Manual

Page: 79 / 1016

direction for the current channels to the line protection is set with the line as reference
object and the directional functions of the line protection shall be set to
Forward to
protect the line.
Transformer and
Line protection
Transformer
Line
Setting of current input
for transformer functions:
Set parameter
CT_WyePoint with
Transformer as
reference object.
Correct setting is
"ToObject"
Forward Reverse
Definition of direction for
directional
line functions
Setting of current input
for transformer functions:
Set parameter
CT_WyePoint with
Transformer as
reference object.
Correct setting is
"ToObject"
Setting of current input
for line functions:
Set parameter
CT_WyePoint with
Line as
reference object.
Correct setting is
"FromObject"
en05000462_ansi.vsd
ANSI05000462 V1 EN-US
Figure 11: Example how to set CT_WyePoint parameters in the IED
1MRK 504 163-UUS A
Section 4
Analog inputs
Transformer protection RET670 2.2 ANSI 73
Application manual