Functions
Sampling
overcurrent
alarm
The
overcurrent
alarm
is
triggered
when
sampling
current
is
bigger
than
6
.
0A
.
≡
0
Discharge
delay
protection
The
switching
lock
-
up
time
for
the
same
group
of
capacitors
is
3
minutes
.
Circular
self
-
test
function
Provides
circular
self
-
test
function
for
factory
testing
of
capacitor
screen
.
Safety
protection
IP30
Installation
method
Embedded
Technical
parameter
s
Sampling
and
rated
voltage
380VAC±20
%
440VAC±20
%
220VAC±20
%
240VAC±20
%
Overvoltage
threshold
setup
400V
~
456V
400V
~
528V
230V
~
270V
240V
~
300V
Overvoltage
factory
preset
430V
500V
250V
270V
Rated
frequency
50Hz±5
%
or
60Hz±5
%
Sampling
current
150
ｍ
A
~
5A
,
input
impedance
≤
3m
Ω
Undercurrent
lock
-
up
≤
150mA
Current
ratio
setup
Current
ratio
setup
range
for
external
sampling
current
transformer
:
5
~
1200
,
set
ratio
(
factory
preset
60
means
300
/
5
)
Delay
time
setup
5
~
120
seconds
(
factory
preset
30
seconds
)
Setup
mode
Full
automatic
mode
(
display
code
1
):
no
need
to
set
adding
threshold
and
removing
threshold
.
Manual
setup
mode
(
display
code
0
):
adding
threshold
and
removing
threshold
need
to
be
set
manually
.
Adding
threshold
setup
Full
automatic
mode
:
capacity
of
the
smallest
capacitor
bank
Manual
mode
:
reactive
set
value
,
1
~
120kvar
(
factory
preset
10
kvar
)
Removing
threshold
setup
Power
factor
,
0
.
85
~-
0
.
95
continuously
adjustable
(
factory
preset
1
.
00
)
Circuit
number
setup
JKF8
-
6
(
1
~
6
circuits
available
),
JKF8
-
12
(
1
~
12
circuits
available
)
Operating
method
Automatic
circular
switching
/
manual
switching
Maximum
power
consumption
15W
Tightening
torque Terminal
screw
torque
≤
2
.
5N·m
Output
contact
capacity
5A
/
220V
(
or
3A
/
380V
)
Weight
About
1
.
5Kg
JKF8 SeriesSmart Low-Voltage Reactive Power Compensation Controller
02
