GE MiCOM P40 - Page 852

Appendix B -Settings and Signals
P446SV
B106
P446SV-TM-EN-1
MENU TEXT COL ROW DEFAULT SETTING AVAILABLE OPTIONS
DESCRIPTION
Echo
Echo and Trip
[Indexed String]
Setting that defines Aided 1 scheme operation in case of weak infeed conditions, where no protection elements detect the fault at the local
end, but an aided channel has been received from the remote end. Setting “Echo” will allow the received signal to be returned to the remote
relay, “Trip” will allow local end tripping after a set delay.
WI Sngl Pole Trp 34 51 Disabled
Disabled
Enabled
[Indexed String]
Setting that defines the Weak Infeed tripping mode. When disabled, any WI trip will be converted to a 3 phase trip.
WI V<Thresh. 34 52 45
From 10*V1 to 70*V1 in steps of 5*V1
[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 53 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 58 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 1 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 59 0
From 0 to 1 in steps of 0.002
[Courier Number (time-seconds)]
Pick up time delay of DDB signal ‘Aid1 CustomT in’, available in the PSL logic. Once the time delay elapses, the DDB signal ‘Aid1 CustomT out’
will become high.
Custom Time DO 34 5A 0
From 0 to 1 in steps of 0.002
[Courier Number (time-seconds)]
Drop off time delay of DDB signal ‘Aid1 CustomT in’. Once the time delay elapses, the DDB signal ‘Aid1 CustomT out’ will become low.
Note: The timer is a combined hard coded PU/DO timer for Custom Aided scheme 1.
AIDED SCHEME 2
34
60
Aid. 2 Selection 34 61 Disabled
Disabled
PUR
PUR Unblocking
POR
POR Unblocking
Blocking 1
Blocking 2
Prog. Unblocking
Programmable
[Indexed String]
Selection of the generic scheme type for aided channel 2.
Note: POR is equivalent to POTT (permissive overreach transfer trip), PUR is
equivalent to PUTT (permissive underreach transfer trip).
Aid 2 Distance 34 62 Disabled
Disabled
Phase only
Ground only
Phase And Ground
[Indexed String]