ABB RER670 - Page 116

X1FwZ6: This is used to set the forward positive sequence reactance reach of zone
6 in Ohm/p. It may be set identical to zone 2 reach setting.
X1RvZ6: This is used to set the reverse positive sequence impedance reach of zone
6 in Ohm/p. It may be set less than zone 1 reach of distance protection for the
shortest line in the reverse direction.
REoverRLZ6: This is used to set the earth return compensation factor for resistance
of zone 6. It provides zero sequence compensation for phase-to-earth faults.
XEoverXLZ6: This is used to set the earth return compensation factor for reactance
of zone 6. It provides zero sequence compensation for phase-to-earth faults.
RFPEFwZ6: This is used to set the forward fault resistive reach in Ohm/p for the
phase-to-earth faults of zone 6. It may be set identical to zone 2 resistive reach
setting.
RFPERvZ6: This is used to cover the zone 6 fault resistive reach in Ohm/p for
phase-to-earth faults in reverse direction. It should be set identical to zone 2
resistive reach setting.
RFPPFwZ6: This is used to set the forward fault resistive reach in Ohm/p for
phase-to-phase faults of zone 6. It should be set identical to zone 2 resistive reach
setting.
RFPPRvZ6: This is used to cover the zone 6 fault resistive reach in Ohm/p for
phase-to-phase faults in reverse direction. It should be set identical to zone 2
resistive reach setting.
TimerSelZ6
: This is used to set the zone timer selection mode of zone 6. i.e. Timers
separated, Timers linked, General start, PhSel start, Internal start and External
start. The default setting is Timers separated.
OpModetPEZ6: This is used to set the Off/On operation of the phase-to-earth timer
of zone 6. The default setting is Off.
tPEZ6: This is used to set the time delay to trip for phase-to-earth faults in zone 6.
It should be set to 0.0 s.
OpModetPPZ6: This is used to set the Off/On operation of the phase-to-phase timer
of zone 6. The default setting is Off.
tPPZ6: This is used to set the time delay to trip for phase-to-earth faults in zone 6.
It should be set to 0.0 s.
Phase Selection
GUID-A4027C80-5966-427E-8FFD-838A052146AE v2
ModePhSelKI: This setting is used to enable/disable current ratio of the phase
currents. The default setting is Off.
KI: The current ratio of phase currents used for phase selection. The recommended
setting is 2.0.
Section 7 1MRK 506 375-UEN A
Impedance protection
110 Railway application RER670 2.2 IEC
Application manual