44x/EN ST/Hb6
-20 MiCOM P40 Agile
Menu text Default setting
Setting range
Step size
Min Max
GROUP 1: DISTANCE SCHEMES
Z1 Ext. on Chan. Fail Disabled Disabled or Enabled
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 Disabled Disabled, Echo, WI Trip & Echo, PAP
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 Disabled Disabled, Enabled
Setting that defines the Weak Infeed tripping mode. When disabled, any WI trip will be
converted to a 3 phase trip.
WI: V< Thres. 45V 10V 70V 5V
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 0.06s 0 1s 0.002s
Setting for Weak Infeed trip time delay.
For weak infeed trip options, see section P44x/EN AP.
PAP: Del Trip En Disabled Disabled, Enabled
PAP: P1 / P2 / P3 Disabled Disabled, Enabled
PAP: 1P / 2P / 3P Time
Del
500 ms 100ms 1500s 100.0ms
PAP: IN Thres 500 mA 100mA 1A 10mA
PAP: K (%Vn) 500 e-3 500e-3 1.000 50e-3
PAP : Dist Block Enabled Disabled, Enabled
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 Disabled Disabled or Enabled
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 Disabled Disabled or Enabled
The Loss of Load logic can be chosen to be enabled when the channel associated with an
aided scheme has failed.
LoL: I< 0.5 x In 0.05 x In 1 x In 0.05 x In
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