10
Switch settings
Additional functions required for individual
applications are selected with switchgroups
SGF1...8, SGB1...3 and SGR1...11. The switch
numbers, 1...8, and the switch positions, 0 and
1, are displayed when the switches are being set
manually. Normally, the checksums of the
switchgroups are displayed, see the main menu
in section "Menu chart".
The tables below indicates the factory default
settings of the switches and the corresponding
checksums. The method for manual calculation
of the checksum is shown at the end of this
section.
The switchgroups SGF1...8 are used for confi-
guring the desired functions as follows:
Switch
Function
Factory
default
SGF1/1
Definite time or inverse time characteristic for stage I>.
0
SGF1/2
When the inverse time has been selected, the desired
0
SGF1/3
current/time characteristic is selected as follows:
0
SGF1/1 SGF1/2
SGF1/3
Characteristic
Operate time t> or
time/current curve
0
0
0
Definite time
0.05...300 s
1
0
0
Inverse time
Extremely inverse
0
1
0
"
Very inverse
1
1
0
"
Normal inverse
0
0
1
"
Long-time inverse
1
0
1
"
RI type characteristic
0
1
1
"
RXIDG type
characteristic
1
1
1
---
(Long-time inverse)
SGF1/4
Not in use
0
SGF1/5
Automatic doubling of the set start current of stage I>>, when the
0
object to be protected is connected to the network.
When SGF1/5 = 0, the doubling function is out of use.
When SGF1/5 = 1, the set start current of stage I>> is automatically
doubled. This feature allows the start current of stage I>> to be set
below the level of the connection inrush current.
SGF1/6
Definite time or inverse time characteristic for stage I
0
>.
0
SGF1/7
When the inverse time has been selected, the desired
0
SGF1/8
current/time characteristic is selected as follows:
0
SGF1/6 SGF1/7
SGF1/8
Characteristic
Operate time t
0
> or
time/current curve
0
0
0
Definite time
0.05...300 s
1
0
0
Inverse time
Extremely inverse
0
1
0
"
Very inverse
1
1
0
"
Normal inverse
0
0
1
"
Long-time inverse
1
0
1
"
RI type characteristic
0
1
1
"
RXIDG type
characteristic
1
1
1
---
(Long-time inverse)
∑
SGF1
0
Summary of Contents for SPAA 341 C /E351
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