PhSelModeZ5
: This is used to enable the measuring loops of zone 5. It can be set to
Phsel logic
,
Release L1E
,
ReleaseL2E
,
Release PE
,
Release L1L2
and
Release
PE&PP
modes. The default setting is
Phsel logic
mode.
LEModeZ5
: This is used to operate the load discrimination characteristic of zone 5.
The default setting is
Off
.
LCModeZ5
: This is used to enable/disable the adaptive load compensation mode of
zone 5. It avoids overreaching of the zone in to the next section in case of resistive
fault due to remote end feed. Generally, this setting is not needed for zone 5. The
default setting is
Off
.
X1FwZ5
: This is used to set the forward positive sequence reactance reach of zone
5 in Ohm/p. It may be set identical to either zone 2 or zone 3 reach settings.
X1RvZ5
: This is used to set the reverse positive sequence impedance reach of zone
5 in Ohm/p. It may be set identical to
X1FwZ5
.
REoverRLZ5
: This is used to set the earth return compensation factor for resistance
of zone 5. It provides zero sequence compensation for phase-to-earth faults.
XEoverXLZ5
: This is used to set the earth return compensation factor for reactance
of zone 5. It provides zero sequence compensation for phase-to-earth faults.
RFPEFwZ5
: This is used to set the forward fault resistive reach in Ohm/p for the
phase-to-earth faults in zone 5. This may be set identical to zone 1 setting. In case
of permissive overreach schemes used for short lines, this has to be set higher than
zone 1 resistive reach.
RFPERvZ5
: This is used to cover the zone 5 fault resistive reach in Ohm/p for
phase-to-earth faults in reverse direction. It may be set identical to zone 1 setting.
RFPPFwZ5
: This is used to set the forward fault resistive reach in Ohm/p for
phase-to-phase faults in zone 5. It may be set identical to zone 1 setting.
RFPPRvZ5
: This is used to cover the zone 5 fault resistive reach in Ohm/p for
phase-to-phase faults in reverse direction. It may be set identical to zone 1 setting.
TimerSelZ5
: This is used to set the zone timer selection mode of zone 5. i.e.
Timers
separated
,
Timers linked
,
General start
,
PhSel start
,
Internal start
and
External
start
. The default setting is
Timers separated
.
OpModetPEZ5
: This is used to set the
Off/On
operation of the phase-to-earth timer
of zone 5. The default setting is
Off
.
tPEZ5
: This is used to set the time delay to trip for phase-to-earth faults in zone 5.
It should be set identical to zone 2/zone 3 timer setting.
OpModetPPZ5
: This is used to set the
Off/On
operation of the phase-to-phase timer
of zone 5. The default setting is
Off
.
Section 7
1MRK 506 375-UEN A
Impedance protection
122
Railway application RER670 2.2 IEC
Application manual
Summary of Contents for RELION RER670
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