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2.7.2.1
Settings for the I>> Stage of the Definite-Time Overcurrent Protection
Addr.
Setting Title
1301
O/C I>>
1302
I>>
1303
T I>>
1304
Phase Direction
1305
LINE ANGLE
2.7.2.2
Information for the I>> stage of the Definite-Time Overcurrent Protection
F.No.
Alarm
01721 >BLOCK I>>
01720 >BLOCK dir.
01955 I>> OFF
01956 I>> BLOCKED
01957 I>> ACTIVE
01806 I>> forward
01807 I>> backward
01801 I>> Fault L1
01802 I>> Fault L2
01803 I>> Fault L3
01808 I>> picked up
01809 I>> TRIP
7UM62 Manual
C53000-G1176-C149-3
Definite-Time Overcurrent Protection (I>>, ANSI 50, 51, 67) with Direction Detection
The following list indicates the setting ranges and the default settings of a I
secondary nominal current. For a secondary nominal current of I
must be multiplied by 5. Consider the current transformer ratios when setting the
device with primary values.
Setting Options
OFF
ON
Block relay for trip com-
mands
0.05..20.00 A
0.00..60.00 sec; ∞
Forward
Reverse
-90..90 °
>BLOCK I>>
>BLOCK direction I>> stage
O/C prot. stage I>> is switched OFF
O/C prot. stage I>> is BLOCKED
O/C prot. stage I>> is ACTIVE
O/C I>> direction forward
O/C I>> direction backward
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 prot. I>> picked up
O/C I>> TRIP
Default Setting
OFF
Overcurrent Time Protection I>>
4.30 A
I>> Pickup
0.10 sec
T I>> Time Delay
Reverse
Phase Direction
60 °
Line Angle
Comments
= 1 A
N
= 5 A, these values
N
Comments
47
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