I 1
2
1
I 2
S
S
S
S
U
U
Installation
procedure
:
Embed
the
controller
into
the
hole
on
the
panel
first
,
then
push
the
mounting
parts
into
the
upper
and
lower
slots
on
the
controller
case
.
Tighten
the
screws
to
fix
the
controller
onto
the
panel
.
After
installing
the
upper
and
lower
mounting
parts
,
please
make
sure
the
controller
is
secured
,
otherwise
it
may
fall
out
or
be
damaged
due
to
vibration
during
transportation
.
3
.
2
.
2
Product
wiring
Figure
3
Product
wiring
①
Terminals
“
US1”
and
“
US2”
are
connected
to
sampling
voltage
.
They
must
be
connected
to
380VAC
or
220VAC
based
on
rated
operating
voltage
.
②
Terminals
“
IS1”
and
“
IS2”
are
connected
to
sampling
current
which
comes
from
total
load
current
tranformer
and
set
apart
from
“
US1”
and
“
US2”.
(
Phase
A
for
current
,
phase
B
and
C
for
voltage;
phase
B
for
current
,
phase
A
and
C
for
voltage;
phase
C
for
current
,
phase
A
and
B
for
voltage
)
③
Terminal
“
COM”
is
the
relay
common
terminal
for
the
output
of
group
1
~
12
of
the
controller
.
Terminals
“
1
~
12”
are
used
for
output
control
of
the
contactors
of
the
compensation
circuits
of
the
capacitor
display
.
④
If
the
system
voltage
is
3
-
phase
380V
and
the
coil
voltage
of
contactor
J
is
220V
,
P
is
connected
to
phase
N
.
If
the
coil
voltage
of
contactor
J
is
380V
时,
P
is
connected
to
phase
C
(
different
from
relay
common
terminal
COM
).
⑤
If
the
system
voltage
is
3
-
phase
220V
,
please
select
220V
for
the
coil
voltage
of
contactor
J
,
and
P
10
9
8
7
6
5
4
3
2
1
COM
12
11
J 1
JKF8
H
L
5A
1A
1A
J12
FU1 F
F
U
U
2
3
A
B
C
N
A
B
C
N
P
P
Power transformer
Rear View
To load control panel
Tota
l c
urre
nt t
ran
sfo
rm
er
L
o
w v
o
lt
a
g
e s
id
e
High voltage side
JKF8 SeriesSmart Low-Voltage Reactive Power Compensation Controller
04
