GE MiCOM P40 Agile Technical Manual page 94

P44x/EN ST/Hb6
(ST) 4-20
Menu text
GROUP 1: DISTANCE SCHEMES
Z1 Ext. on Chan. Fail
Enable or disable the "Z1X extension on channel fail": For the duration of any alarm condition
(loss of guard, loss of carrier), the "zone 1 extension" trip logic will be invoked if this option
has been enabled.
Weak Infeed
WI: Mode Status
Weak infeed logic can be enabled with weak infeed echo option or weak infeed trip option
(PAP is a specific customer application).
Refer to Weak Infeed section (P44x/EN AP) for mode status and settings.
WI: Single Pole
Setting that defines the Weak Infeed tripping mode. When disabled, any WI trip will be
converted to a 3 phase trip.
WI: V< Thres.
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 Time Delay
Setting for Weak Infeed trip time delay.
For weak infeed trip options, see section P44x/EN AP.
PAP: Del Trip En
PAP: P1 / P2 / P3
PAP: 1P / 2P / 3P Time
Del
PAP: IN Thres
PAP: K (%Vn)
PAP : Dist Block
If set to Enabled, the PAP scheme is blocked in case the distance start characteristic is
asserted.
Loss of Load
The loss of load (LoL) provides fast fault clearance for faults (see P44x/EN AP, LOL
section).
LoL: Mode Status
Setting that enables (turns on) or disables (turns off) the Loss of Load scheme. When
enabled, the loss of load logic provides fast fault clearance for faults over the whole of a
double end fed protected circuit for all types of fault, except three phases.
LoL: Chan. Fail
The Loss of Load logic can be chosen to be enabled when the channel associated with an
aided scheme has failed.
LoL: I<
Default setting
Disabled Disabled or Enabled
Disabled Disabled, Echo, WI Trip & Echo, PAP
Disabled Disabled, Enabled
45V 10V
0.06s 0
Disabled Disabled, Enabled
Disabled Disabled, Enabled
500 ms 100ms
500 mA 100mA
500 e-3 500e-3
Enabled Disabled, Enabled
Disabled Disabled or Enabled
Disabled Disabled or Enabled
0.5 x In 0.05 x In
MiCOM P40 Agile P442, P444
Setting range
Min Max
70V
1s
1500s
1A
1.000
1 x In
Setting
Step size
5V
0.002s
100.0ms
10mA
50e-3
0.05 x In