Appendix B -Settings and Signals
MENU TEXT COL ROW DEFAULT SETTING AVAILABLE OPTIONS
DESCRIPTION
Setting that enables (turns on) or disables (turns off) special protection following
auto-reclosure. When set Enabled, TOR will be activated after the ‘TOC Delay’ has expired, ready for application when an auto-reclose shot
occurs. TOR = Trip on (auto)Reclose.
TOR Tripping 34 85 1
Zone 2
Zone 3
Zone P
Zone 4
Current No Volts
[Binary Flag (indexed string)]
Logic Settings that determine the Distance zones that are allowed to operate instantaneously upon line energization. If, for example, Bit 1 is
set to 1 (High), Z2 will operate without waiting for the usual tZ2 time delay should a fault lie within Z2 upon CB closure. It also allows a user
to map ‘Currents No Volt’ option for fast fault clearance upon line reclosure on a permanent fault. TOR tripping is 3 phase and auto-reclose
TOC Reset Delay 34 86 0.5
From 0.1 to 2s in steps of 0.1
[Courier Number (time-seconds)]
The TOC Reset Delay is a user settable time window during which TOC protection is available. The time window starts timing upon CB closure
and it is common for SOTF and TOR protection. Once this timer expires after a successful (re)closure, all protection reverts to normal.
SOTF Pulse 34 87 0.5
From 0.1 to 10s in steps of 0.01
[Courier Number (time-seconds)]
The SOTF Pulse is a user settable time window during which the SOTF protection is available. This setting is visible only if ExtPulse or Pdead +
Pulse are selected to enable SOTF
TOC Delay 34 88 0.2
From 0.05 to 0.2 in steps of 0.01
[Courier Number (time-seconds)]
The TOC Delay is a user settable time delay following the CB opening after which the TOR becomes active (enabled). The time must be set in
conjunction with the Dead Time setting of the Auto-reclose so that the setting must not exceed the minimum Dead Time setting since both
timers start instantaneously.
Z1 Ext Scheme 34 B1 Disabled
Enabled
En. on Ch1 Fail
En. on Ch2 Fail
En. All Ch Fail
En. Any Ch Fail
Setting that enables (turns on) or disables (turns off) the Zone 1 Extension scheme. When Enabled, extended Zone 1 will apply unless the
Reset Zone 1 Extension DDB signal is energized. Otherwise, it is possible to enable Z1X when aided scheme channel(s) fail.
Z1 Ext Ph 34 B2 150
From 100 to 200 in steps of 1
[Courier Number (percentage)]
Extended Z1X phase reach as a percentage of the Z1 phase reach. (Phase resistive reach for Z1X is the same as for Zone 1.)
Z1 Ext Gnd 34 B3 150
From 100 to 200 in steps of 1
[Courier Number (percentage)]
Extended Z1X ground reach as a percentage of Z1 ground reach. (Ground resistive reach and residual compensation for Z1X is the same as
for Zone 1.)
LOL Scheme 34 C1 Disabled
Enabled
En. on Ch1 Fail
En. on Ch2 Fail
En. All Ch Fail
En. Any Ch Fail
Setting that enables (turns on) or disables (turns off) the Loss of Load scheme. When Enabled, accelerated tripping can apply as the remote
end opens (3-pole trip applications only). Otherwise, it is possible to enable Z1X when aided scheme channel(s) fail.
LOL <I 34 C3 0.5
From 0.05*I1 to 1*I1 in steps of 0.05*I1
[Courier Number (current)]
LOL undercurrent detector that indicates a loss of load condition on the unfaulted phases, indicating that the remote end has just opened.
LoL Window 34 C4 0.04
From 0.01 to 0.1 in steps of 0.01
[Courier Number (time-seconds)]
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