GE MiCOM P40 - Page 854

Appendix B -Settings and Signals
P446SV
B108
P446SV-TM-EN-1
MENU TEXT COL ROW DEFAULT SETTING AVAILABLE OPTIONS
DESCRIPTION
[Courier Number (voltage)]
Setting of Weak Infeed level detector. If phase - ground voltage in any phase drops below the threshold and with insufficient phase current
for the protection to operate, the end is declared as a weak infeed terminal.
WI Trip Delay 34 73 0.06
From 0 to 1 in steps of 0.002
[Courier Number (time-seconds)]
Setting for the weak infeed trip time delay.
Custom Send Mask 34 78 1
Z1 Gnd.
Z2 Gnd.
Z4 Gnd.
Z1 Ph.
Z2 Ph.
Z4 Ph.
DEF Fwd.
DEF Rev.
Dir Comp Fwd.
Dir Comp Rev.
[Binary Flag (indexed string)]
Logic Settings that determine the element or group of elements that are sending a permissive signal to the other line end. For the signal to
be sent, the element must operate and a corresponding bit in the matrix must be set to 1 (High).
The above mapping is part of a custom made Aided 2 scheme, and unlike all other schemes that are factory tested, the customer must take
the responsibility for testing and the operation of the scheme.
This setting is visible only if a Programmable or Prog. Unblocking scheme is selected.
Custom Time PU 34 79 0
From 0 to 1 in steps of 0.002
[Courier Number (time-seconds)]
Pick up time delay of DDB signal ‘Aid2 CustomT in’, available in the PSL logic. Once the time delay elapses, the DDB signal ‘Aid2 CustomT out’
will become high.
Custom Time DO 34 7A 0
From 0 to 1 in steps of 0.002
[Courier Number (time-seconds)]
Drop off time delay of DDB signal ‘Aid2 CustomT in’. Once the time delay elapses, the DDB signal ‘Aid2 CustomT out’ will become low.
Note: The timer is a combined hard coded PU/DO timer for Custom Aided scheme 2.
Trip on Close
34
80
SOTF Status 34 81 Enabled PoleDead
Disabled
Enabled PoleDead
Enabled ExtPulse
En Pdead + Pulse
[Indexed String]
Setting that enables note (turns on) or disables (turns off) a special protection logic which can apply upon line energization. SOTF = Switch
on to Fault.
Note: SOTF can be enabled in three different manners:
1. Enabled Pole Dead. By using pole dead logic detection logic
2. Enabled ExtPulse. By using an external pulse
3. En Pdead + Pulse. By using both
SOTF Delay 34 82 110
From 0.2 to 1000 in steps of 0.2
[Courier Number (time-seconds)]
The SOTF Delay is a pick up time delay that starts after opening all 3 poles of a CB. If the CB is then closed after the set time delay has
expired, SOTF protection will be active. SOTF provides enhanced protection for manual closure of the breaker (not for auto-reclosure).
This setting is visible only if Pole Dead or Pdead + Pulse are selected to enable SOTF.
SOTF Tripping 34 83 1
Zone 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 energization. SOTF tripping is 3 phase and auto-reclose will be blocked.
TOR Status 34 84 Enabled
Disabled
Enabled
[Indexed String]