ABB REL670 2.2 IEC - Page 326

RFPEZm
X1Zm+XNZm
X1Zm+XNZm
RFPEZm
R1Zm+RN
RFPEZm
RFPEZm
R
X
PHS
Zm
90°
R1Zm+RN
X1PHS+XNPHS
X1PHS+XNPHS
RFFwPEPHS
RFRvPEPHS
loopφ
loopφ
IEC08000435.vsd
(Ohm/loop)
1 PHS PHSR PE RN+
(Minimum setting)
0 1
3
PHS PHS
PHS
R PE R PE
RN
-
=
IEC08000435 V1 EN-US
Figure 163: Relation between measuring zone and FRPSPDIS characteristic
Reactive reach
GUID-8C693495-10FA-47D5-BEFC-E72C8577E88B v1
The reactive reach in forward direction must as minimum be set to cover the
measuring zone used in the Teleprotection schemes, mostly zone 2. Equation 269
and equation 270 gives the minimum recommended reactive reach.
These recommendations are valid for both 60 and 90 deg. characteristic angle.
PHS Zm
X1 1.44 X1³ ×
EQUATION1309 V1 EN-US (Equation 269)
Section 8 1MRK 506 369-UEN B
Impedance protection
320 Line distance protection REL670 2.2 IEC
Application manual