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TOSHIBA
GF9EOO90
6.
AdjustDents
6.1 Current setting
(1) When detected current is in a range of 0.5
-
5A:
After confirming that the current value under
noraal
load
condition is in a range of 0.5
-
SA,
set the current
adjusting knob to the desired detecting value.
(2)
When detected current is above
5A:
Using an external CT (current transformer),
properly
suited
for the detected Current value, connect the secondary side of
the CT to the
input
terminal
of the relay. Calculate the
secondary current
CorresDonding
to the detected current
value, based on the CT ratio. Then set the current adjusting
Knob to this calculated value.
-
6.2 Setting the detection delay
tiae
Setting time varies depending
upon
each individual
aDDlication.
Adjust the detection delay
tile
according to the following:
(1)
Hotor
load
TO avoid detection during start-up, set the delay tire to
aDDroxisately
120% of starting
tile.
(2)
Transformer
load
If the inrush current (inrush time varies
deDending
uDon
caDacity)
is large, set the delay
tile
to
approximately
120% of this inrush
tile.
Genenrally,
If
the
caDacity
is
Wall,
inrush
time
is short and therefore, even when the
adjusting knob is set at the
minims
position. there should
not be any nuisance tripping.
-
12-