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Functions
2.9 Definite-Time Overcurrent Protection (I>>, ANSI 50, 51, 67) with Direction Detection
Figure 2-17
2.9.3
Settings
The table indicates region-specific presettings. Column C (configuration) indicates the corresponding second-
ary nominal current of the current transformer.
Addr.
Parameter
1301
O/C I>>
1302
I>>
1303
T I>>
1304
Phase Direction
1305
LINE ANGLE
2.9.4
Information List
No.
Information
1720
>BLOCK dir.
1721
>BLOCK I>>
1801
I>> Fault L1
1802
I>> Fault L2
1803
I>> Fault L3
1806
I>> forward
1807
I>> backward
1808
I>> picked up
1809
I>> TRIP
1955
I>> OFF
1956
I>> BLOCKED
1957
I>> ACTIVE
74
I>> Stage as 'Differential Protection'
C
Setting Options
OFF
ON
Block relay
5A
0.25 .. 100.00 A
1A
0.05 .. 20.00 A
0.00 .. 60.00 sec; ∞
Forward
Reverse
-90 .. 90 °
Type of In-
formation
SP
SP
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
Default Setting
OFF
21.50 A
4.30 A
0.10 sec
Reverse
60 °
Comments
>BLOCK direction I>> stage
>BLOCK I>>
O/C fault detection stage I>> phase L1
O/C fault detection stage I>> phase L2
O/C fault detection stage I>> phase L3
O/C I>> direction forward
O/C I>> direction backward
O/C prot. I>> picked up
O/C I>> TRIP
O/C prot. stage I>> is switched OFF
O/C prot. stage I>> is BLOCKED
O/C prot. stage I>> is ACTIVE
C53000-G1176-C149-7, Release date 03.2010
Comments
Overcurrent Time Protec-
tion I>>
I>> Pickup
T I>> Time Delay
Phase Direction
Line Angle
SIPROTEC, 7UM62, Manual
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