Table
1
Key
technical
parameters
JKF8
smart
low
-
voltage
reactive
power
automatic
compensation
controller
(
hereinafter
referred
to
as
controller
)
is
designed
for
reactive
power
compensation
in
low
voltage
power
distribution
systems
.
By
compounding
controlling
of
physical
variables
(
reactive
power
and
power
factor
),
the
product
enables
automatic
capacitor
switching
,
power
factor
improvement
and
line
reactive
power
loss
reduction
.
It
is
easy
for
operation
and
reliable
,
with
complete
functions
and
strong
anti
-
interference
capability
.
The
product
complies
with
JB
/
T9663
standard
and
can
correctly
display
grid
power
factor
under
harmonic
environment
.
Use
Purpose
1
Type
Key
and
Definitions
Key
Technical
Parameters
2
Rated
frequency
:
60Hz
,
no
this
option
for
default
50Hz
Rated
voltage
:
220VAC
,
240VAC
,
380VAC
,
440VAC
Output
circuit
specification
:
6
,
12
Product
design
serial
number
Control
of
physical
variables
:
compound
Low
-
voltage
reactive
compensation
controller
JK
F
8
□
□
□
Environm
ental
condition
s
Ambient
temp
.
(℃)
-
25
℃~+
70
℃
Hot
and
humid
atmospheric
conditions
50
%
relative
humidity
at
+
40
℃;
up
to
90
%
at
+
20
℃;
Altitude
≤
2000m
, (
take
ventilation
,
heat
dissipation
and
anti
-
condensation
measures
for
altitude
above
2000m
)
Pollution
class
/
installation
category
Free
from
hazardous
gases
and
vapors
,
conductive
or
explosive
dusts
,
and
strong
mechanical
vibration
Functions
Control
strategy
Compound
control
of
reactive
power
and
power
factor
,
ensuring
reliable
switching
under
low
load
and
preventing
resonance
during
switching
.
Display
code
Non
-
polarized
current
Self
-
identifying
of
current
polarity
,
no
direction
requirement
for
IS1
and
IS2
sampling
lines
.
Undervoltage
protection
Automatically
removes
capacitor
banks
in
operation
level
by
level
(
in
5
seconds
)
when
grid
voltage
is
lower
than
0
.
78UN
and
displays
voltage
value
.
≡
U
Overvoltage
protection
Automatically
removes
capacitor
banks
in
operation
level
by
level
(
in
5
seconds
)
when
grid
voltage
higher
than
overvoltage
threshold
and
displays
voltage
value
.
≡
U
Undercurrent
protection
Automatically
removes
capacitor
banks
in
operation
level
by
level
(
in
5
seconds
)
and
lock
-
up
capacitor
adding
when
the
secondary
signal
of
the
current
transformer
is
lower
than
150
ｍ
A
.
≡
1
JKF8 SeriesSmart Low-Voltage Reactive Power Compensation Controller
01
