P54x/EN ST/La4 Settings
(ST) 4-24
MiCOM P543, P544, P545, P546
ST
Setting range
Menu text Default setting
Min. Max.
Step size
Phase Is1 CTS 1.2*In 0.2*In 4*In 0.05*In
Setting that defines the minimum pick-up level of the relay when a current transformer
is decsupervision CTS lared
PIT I Selection Remote Local or Remote
Setting that defines the current to be used for the Permissive Intertrip
1.3.5 S
T
one when distance
(TOC)
Setting e
cheme logic (basic and aided scheme logic). Only in models with distance option
he column GROUP x SCHEME LOGIC is used to:
Set operating mode and associated timers for each distance z
e Basic me operates in th sche
Select aided schemes via one or two available signaling channels
Define operating zones during Trip On Close
rang
Menu text Default setting
Min. Max.
Step size
BASIC SCHEME
Zone 1 Tripping Phase and Ground
Disabled, Phase only, Ground only, or
Phase and Ground
Setting to select for which types of fault Zone 1 elements will be applied.
tZ1 Ph. Delay 0 s 0 s 10 s 0.01 s
Time delay for Z1 phase element.
tZ1 Gnd. Delay 0 s 0 s 10 s 0.01 s
Time delay for Z1 ground element.
Zone 2 Tripping Phase and Ground
Disabled, Phase only, Ground only, or
Phase and Ground
Setting to select for which types of fault Zone 2 elements will be applied.
tZ2 Ph. Delay 0.2 s 0 s 10 s 0.01 s
Time delay for Z2 phase element.
tZ2 Gnd. Delay 0.2 s 0 s 10 s 0.01 s
Time delay for Z2 ground element.
Zone 3 Tripping Phase and Ground
Disabled, Phase only, Ground only, or
Phase and Ground
Setting to select for which types of fault Zone 3 elements will be a lied. pp
tZ3 Ph. Delay 0.6 s 0 s 10 s 0.01 s
Time delay for Z3 phase element.
tZ2 Gnd. Delay 0.6 s 0 s 10 s 0.01 s
Time delay for Z3 ground element.
Zone P Tripping Phase and Ground
Disabled, Phas ly, Ground only, or e on
Phase and Ground
Setting to select for which ents will be applied. types of fault Zone P elem
tZP Ph. Delay 0.4 s 0 s 10 s 0.01 s
Time delay for ZP phase element.
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