IEC09000308_2_en.vsd
*
Load compensation characteristic
is present only for zone 1 phase-to-
ground measurement loops.
R
(Ohm/loop)
X (Ohm/loop)
*
2
1
1
1
1
1
1
3
5
4
4
6
6
7
7
IEC09000308 V2 EN
Figure 32:
Characteristic for phase-to-ground measuring
1
RFPG
2
KNMag |Z|
where:
KN·Z=ZN
3
|Z|
where
Z denotes the positive sequence vector corresponding to the zone reach
4
LineAng
5
KNAng (negative)
6
R1 + Rn
where
Rn = (R0 - R1)/3
7
X1 +Xn
where
Xn = (X0 - X1)/3
1MRK 506 335-UUS A
Section 6
Impedance protection
101
Technical manual
Summary of Contents for REL650 series
Page 1: ...Relion 650 series Line distance protection REL650 ANSI Technical manual ...
Page 2: ......
Page 42: ...36 ...
Page 48: ...42 ...
Page 58: ...52 ...
Page 68: ...62 ...
Page 74: ...68 ...
Page 194: ...188 ...
Page 534: ...528 ...
Page 580: ...574 ...
Page 722: ...716 ...
Page 792: ...786 ...
Page 855: ...849 ...