4
.
1
.
1
User
should
check
the
operating
status
of
the
controller
on
a
regular
basis
.
Normally
,
the
displayed
power
factor
of
the
controller
should
not
be
larger
than
0
.
92
and
should
be
relatively
stable
.
When
the
sampling
current
is
smaller
than
200mA
or
the
controller
displays
undercurrent
alarm
,
it
will
be
difficult
to
determine
whether
the
controller
is
under
normal
operation
,
because
the
power
factor
can
either
be
positive
or
negative
and
the
display
status
can
either
be
leading
or
lagging
,
therefore
user
should
conduct
motor
load
commissioning
.
4
.
1
.
2
The
power
factor
value
will
decrease
as
user
increases
the
motor
load
,
and
the
controller
will
display
lagging
.
As
the
capacitors
are
being
added
automatically
,
the
power
factor
will
increase
gradually
and
the
total
current
of
the
cabinet
will
decrease
.
User
should
record
the
power
factor
and
total
cabinet
current
in
real
time
.
4
.
1
.
3
Use
the
universal
change
-
over
switch
on
the
controller
or
the
cabinet
to
remove
the
capacitor
banks
in
operation
manually
before
disconnecting
the
power
supply
of
the
cabinet
.
4
.
1
.
4
Short
circuit
the
secondary
side
of
the
sampling
current
transformer
before
removing
or
replacing
the
JKF8
controller
to
prevent
open
circuit
of
the
current
transformer
.
Remove
the
short
circuit
line
after
reinstalling
the
controller
.
4
.
2
Analysis
and
troubleshooting
of
faults
3
.
3
.
3
Preparation
and
inspection
before
use
1
)
Before
using
the
capacitor
,
user
should
check
if
the
model
on
the
nameplate
is
consistent
with
that
of
the
product
.
User
should
also
check
if
the
included
accessories
are
complete
.
2
)
Identify
the
sampling
phase
sequence
of
the
controller
correctly
:
Turn
the
multimeter
to
AC
voltage
position
.
Press
one
probe
on
the
busbar
of
the
series
sampling
transformer
in
the
cabinet
,
use
the
other
probe
to
test
if
the
voltage
between
the
transformer
and
the
US1
or
US2
terminal
of
JKF8
controller
is
UN
(
rated
operating
voltage
).
If
yes
,
the
sampling
phase
sequence
is
correct
.
3
)
Check
if
all
the
parameters
of
the
controller
are
set
correctly
according
to
“
Parameter
setup”
.
If
“
F
-
0”
is
set
to
“
1”
,
user
just
need
to
check
if
“
F
-
5”
and
“
F
-
6”
are
set
correctly
.
4
Maintenance
4
.
1
Daily
maintenance
JKF8 SeriesSmart Low-Voltage Reactive Power Compensation Controller
07