ABB REB670 - Common Settings for All Steps

SeqTypeUPol: This is used to select the type of voltage polarising quantity i.e. Zero seq
and Neg seq for direction detection.
SeqTypeIPol: This is used to select the type of current polarising quantity i.e. Zero seq
and Neg seq for direction detection.
SeqT
ypeIDir: This is used to select the type of operating current quantity i.e. Zero seq
and Neg seq for direction detection.
7.3.2.1 Common settings for all steps
M15282-81 v10
AngleRCA: Relay characteristic angle given in degree. This angle is defined as shown
in Figure
95. The angle is defined positive when the residual current lags the reference
voltage (Vpol = 3V
0
or V
2
)
V pol = 3V
0
or V
2
RCA
Operation
IDirPU
en 05000135-4- ansi.vsd
ANSI05000135 V3 EN-US
Figure 95: Relay characteristic angle given in degree
In a normal transmission network a normal value of RCA is about 65°. The setting
range is -180° to +180°.
polMethod: Defines if the directional polarization is from
Section 7 1MRK 505 370-UUS A
Current protection
198 Busbar protection REB670 2.2 ANSI
Application manual