ABB SPAJ 131 C User Manual And Technical Description page 32

Overcurrent relay
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8
Switch
Function
SG1/7
Selection of the setting range of the operation time t>> of the high-set overcurrent
SG1/8
stage I>>.
SG1/7
SG1/8
0
1
0
1
Switchgroup SG2 is a so called software switch-
group, which is located in the third submenu of
switchgroup SG1. In switchgroup SG2 the mode
of operation of the LED indicators is selected.
The start and operation indicators of the low-set
and the high-set overcurrent stage can be given
self-reset mode of operation or latching mode of
operation. The selection is made by means of a
Indication
Starting, stage I>, yellow
Tripping, stage I>, red
Starting, stage I>>, yellow
Tripping, stage I>>, red
Checksum
Operation time t>>
0
0.04...1.00 s
0
0.4...10.0 s
1
0.4...10.0 s
1
4...100 s
checksum which is calculated from the table
below. Normally the start indications are self-
reset and the operation indications latching.
If the checksum of switchgroup SG2 = 0 no
LED indications are obtained after a fault, i.e.
no start or operation indications I> or I>> nor
phase indications I
, I
or I
.
L1
L2
L3
Latching
Default
1
0
2
2
4
0
8
8
15
10

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