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3-76
Protection Functions
857-UM001A-EN-P – July 2009
Table 3.47 – Parameters of Arc Protection Stages Arcl>, Arcl
(50 ARC / 50N ARC)
Parameter
Value
Status
–
Start
Trip
LCntr
SCntr
TCntr
Force
Off
On
ILmax
I'Lmax
Io1
Io2
ArcI>
ArcIo1>
ArcIo2>
ArcIn
–
S1
S2
S1/S2
BI
S1/BI
S2/BI
S1/S2/BI
Ldly
LdlyCn
–
S1
S2
S1/S2
BI
S1/BI
S2/BI
S1/S2/BI
For details of setting ranges see "Protection Stages" in chapter 10.
Set = An editable parameter (password needed)
C = Can be cleared to zero
F = Editable when force flag is on
Unit
Description
Current status of the stage
Light detected according ArcIn
Light and overcurrent detected
Cumulative light indication counter. S1,
S2 or BI.
Cumulative light indication counter for the
selected inputs according parameter
ArcIn
Cumulative trip counter
Force flag for status forcing for test
purposes. This is a common flag for all
stages and output relays, too.
Automatically reset by a 5-minute
timeout.
Value of the supervised signal
Stage ArcI>
Stage ArcI'>
Stage ArcI
>
01
Stage ArcI
>
02
pu
Pick up setting xI
N
pu
Pick up setting xI
01N
pu
Pick up setting xI
02N
Light indication source selection
No sensor selected
Sensor 1 at terminals X6:4-5
Sensor 2 at terminals X6:6-7
Terminals X6:1-3
Delayed light signal output
s
Delay for delayed light output signal
Light indication source selection
No sensor selected
Sensor 1 at terminals X6:4-5
Sensor 2 at terminals X6:6-7
Terminals X6:1-3
A, Arcl
>
01
02
Note
F
F
C
C
C
Set
Set
Set
Set
Set
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