Siemens siprotec 7SJ63 - Page 252

Functions
6-88 7SJ63 Manual
C53000-G1140-C120-1
Figure 6-41 Inverse Time Characteristic for Negative Sequence Protection
Figure 6-42 Logic Diagram for Negative Sequence Protection
Disk emulation offers advantages when the negative sequence protection must be co-
ordinated with conventional source side relays.
t
1,1 x I
2 P
I
2
Auslösebereich
I
2
>
TI2>
TI2>>
I
2
>>
Schieflast-
Warnstufe I
2>
thermische
Auslösestufe
Schieflast-
Auslösestufe I
2>>
Tripping Area
Thermal Protection
Negative Sequence Warning Level
Severe Imbalance
Protecion
46-1
46-2
46-1
46-2
 '(/
I
2
 $16,&859(
 '(/$<
 3,&.83
T0
>BLOCK 46
2))
21
“1“
 )&7
46 OFF
or
46 BLOCKED
 72&7'
46 ACTIVE
 72&38
 3,&.83
T0
or
46 TRIP
46-2 picked up
72&$16,72&,(&
'LVDEOHG
 
'HILQLWH7LPHRQO\
46-TOC picked up
46-1 picked up
or
F# 5166
F# 5165
F# 5170
F# 5159
F# 5152
F# 5153
F# 5151
F# 5143
Measurement/Logic
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