Rockwell Automation 865 Differential Protection Relay - Manual (Page 74)

3-30 Protection
Functions
865-UM001A-EN-P – July 2009
Table 3.17 – Parameters of Arc Protection Stages Arcl>, Arcl’>, Arcl 01 A,
Arcl 02 > (50 ARC / 50N ARC) (cont.)
Parameter Value Unit Description Note
ArcI>
ArcI’>
ArcIo1>
ArcIo2> pu
pu
pu
pu
Pick up setting xI N
Pick up setting xI’ N
Pick up setting xI 01N
Pick up setting xI 02N
Set
ArcIn
–
S1
S2
S1/S2
BI
S1/BI
S2/BI
S1/S2/BI
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 Set
Delayed light signal output
Ldly s Delay for delayed light output signal Set
LdlyCn
–
S1
S2
S1/S2
BI
S1/BI
S2/BI
S1/S2/BI
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 Set
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
Recorded Values of the Latest Eight Faults
Detailed information is available on the eight latest faults: Time
stamp, fault type, fault value, load current before the fault and
elapsed delay.
Table 3.18 – Recorded Values of the Arc Protection Stages Arcl>, Arcl’>,
Arcl
01 A, Arcl 02 > (50 ARC / 50N ARC)
Parameter Value Unit Description
yyyy-mm-dd Time stamp of the recording, date
hh:mm:ss.ms Time stamp, time of day
Type pu Fault type value. Only for ArcI> stage.
Flt pu Fault value
Load pu Pre fault current. Only for ArcI> stage.
EDly % Elapsed time of the operating time setting.
100% = trip