8
Settings
The setting values are shown by the right-most
three digits of the display. A lit indicator close
to a setting value symbol shows which setting
value is indicated on the display.
Setting
Parameter
Setting range
Factory setting
I
b
>
The starting value of the overload stage I
b
> as
a multiple of the rated current of the protection.
0.30...1.50 x I
n
0.40 x I
n
k
Inverse time multiplier k (k= 1.00 = ANSI-curve). 0.2...2.0
0.2
I
a
>
The starting value of the overload stage I
a
> in
per cent of the setting value I
b
>.
80...120% I
b
>
80% I
b
>
ta
The operating time of the Ia> stage, expressed in
minutes, based on definite time mode of
operation.
0.50...100 min 0.5 min
I<
The starting value of the undercurrent stage I< as
a multiple of the rated current of the protection.
0.10...0.70 x I
n
0.10 x I
n
t<
The operating time of the I< stage, expressed in
seconds.
1.0...100 s
1 s
t
rec
Setting of reconnection inhibit time, expressed in
minutes.
0.50...100 min 100 min
∆
I
1
>
Setting
∆
I
1
> for the unbalance protection in
per cent of
∆
I
n
.
1.0...100%
∆
I
n
1%
∆
I
n
t
∆
1
The operating time of the
∆
I
1
> stage, expressed
in seconds.
1.0...300 s
1 s
∆
I
2
>
Setting
∆
I
2
> for the unbalance protection in
per cent of
∆
I
n
.
2.0...80.0%
∆
I
n
2.0%
∆
I
n
k
∆
2
Inverse time multiplier k
∆
2
for the stage
∆
I
2
>.
0.1...1.0
0.1
∆
I
cs
Setting
∆
I
cs
for the unbalance compensation in
per cent of
∆
I
n
.
0.0...20.0%
∆
I
n
0%
∆
I
n
Note!
If a setting for
∆
I
cs
greater than
∆
I is stored, the
module will automatically store
∆
I amplitude
to setting
∆
I
cs
.
Further the checksums of the programming
switchgroups SGF, SGB1...3 and SGR1...2 are
indicated on the display when the indicators
adjacent to the switchgroup symbols on the
front panel are illuminated. An example of cal-
culating the checksum is given in the general
description of the D-type SPC relay modules.
